2 * TI OMAP DMA gigacell.
4 * Copyright (C) 2006-2008 Andrzej Zaborowski <balrog@zabor.org>
5 * Copyright (C) 2007-2008 Lauro Ramos Venancio <lauro.venancio@indt.org.br>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 #include "qemu-common.h"
23 #include "qemu-timer.h"
27 struct omap_dma_channel_s {
31 enum omap_dma_port port[2];
32 target_phys_addr_t addr[2];
33 omap_dma_addressing_t mode[2];
36 int16_t frame_index[2];
37 int16_t element_index[2];
45 /* auto init and linked channel data */
52 /* interruption data */
69 int omap_3_1_compatible_disable;
72 struct omap_dma_channel_s *sibling;
74 struct omap_dma_reg_set_s {
75 target_phys_addr_t src, dest;
84 /* unused parameters */
86 int interleave_disabled;
92 struct omap_mpu_state_s *mpu;
93 target_phys_addr_t base;
97 enum omap_dma_model model;
98 int omap_3_1_mapping_disabled;
104 struct omap_dma_channel_s ch[16];
105 struct omap_dma_lcd_channel_s lcd_ch;
109 #define TIMEOUT_INTR (1 << 0)
110 #define EVENT_DROP_INTR (1 << 1)
111 #define HALF_FRAME_INTR (1 << 2)
112 #define END_FRAME_INTR (1 << 3)
113 #define LAST_FRAME_INTR (1 << 4)
114 #define END_BLOCK_INTR (1 << 5)
115 #define SYNC (1 << 6)
117 static void omap_dma_interrupts_update(struct omap_dma_s *s)
119 struct omap_dma_channel_s *ch = s->ch;
122 if (s->omap_3_1_mapping_disabled) {
123 for (i = 0; i < s->chans; i ++, ch ++)
125 qemu_irq_raise(ch->irq);
127 /* First three interrupts are shared between two channels each. */
128 for (i = 0; i < 6; i ++, ch ++) {
129 if (ch->status || (ch->sibling && ch->sibling->status))
130 qemu_irq_raise(ch->irq);
135 static void omap_dma_channel_load(struct omap_dma_s *s,
136 struct omap_dma_channel_s *ch)
138 struct omap_dma_reg_set_s *a = &ch->active_set;
140 int omap_3_1 = !ch->omap_3_1_compatible_disable;
143 * TODO: verify address ranges and alignment
144 * TODO: port endianness
147 a->src = ch->addr[0];
148 a->dest = ch->addr[1];
149 a->frames = ch->frames;
150 a->elements = ch->elements;
154 if (unlikely(!ch->elements || !ch->frames)) {
155 printf("%s: bad DMA request\n", __FUNCTION__);
159 for (i = 0; i < 2; i ++)
160 switch (ch->mode[i]) {
162 a->elem_delta[i] = 0;
163 a->frame_delta[i] = 0;
165 case post_incremented:
166 a->elem_delta[i] = ch->data_type;
167 a->frame_delta[i] = 0;
170 a->elem_delta[i] = ch->data_type +
171 ch->element_index[omap_3_1 ? 0 : i] - 1;
172 a->frame_delta[i] = 0;
175 a->elem_delta[i] = ch->data_type +
176 ch->element_index[omap_3_1 ? 0 : i] - 1;
177 a->frame_delta[i] = ch->frame_index[omap_3_1 ? 0 : i] -
178 ch->element_index[omap_3_1 ? 0 : i];
185 static void omap_dma_activate_channel(struct omap_dma_s *s,
186 struct omap_dma_channel_s *ch)
195 if (s->delay && !qemu_timer_pending(s->tm))
196 qemu_mod_timer(s->tm, qemu_get_clock(vm_clock) + s->delay);
199 static void omap_dma_deactivate_channel(struct omap_dma_s *s,
200 struct omap_dma_channel_s *ch)
203 ch->cpc = ch->active_set.dest & 0xffff;
205 if (ch->pending_request && !ch->waiting_end_prog) {
206 /* Don't deactivate the channel */
207 ch->pending_request = 0;
212 /* Don't deactive the channel if it is synchronized and the DMA request is
214 if (ch->sync && (s->drq & (1 << ch->sync)) && ch->enable)
224 qemu_del_timer(s->tm);
227 static void omap_dma_enable_channel(struct omap_dma_s *s,
228 struct omap_dma_channel_s *ch)
232 ch->waiting_end_prog = 0;
233 omap_dma_channel_load(s, ch);
234 if ((!ch->sync) || (s->drq & (1 << ch->sync)))
235 omap_dma_activate_channel(s, ch);
239 static void omap_dma_disable_channel(struct omap_dma_s *s,
240 struct omap_dma_channel_s *ch)
244 /* Discard any pending request */
245 ch->pending_request = 0;
246 omap_dma_deactivate_channel(s, ch);
250 static void omap_dma_channel_end_prog(struct omap_dma_s *s,
251 struct omap_dma_channel_s *ch)
253 if (ch->waiting_end_prog) {
254 ch->waiting_end_prog = 0;
255 if (!ch->sync || ch->pending_request) {
256 ch->pending_request = 0;
257 omap_dma_activate_channel(s, ch);
262 static void omap_dma_enable_3_1_mapping(struct omap_dma_s *s)
264 s->omap_3_1_mapping_disabled = 0;
268 static void omap_dma_disable_3_1_mapping(struct omap_dma_s *s)
270 s->omap_3_1_mapping_disabled = 1;
274 static void omap_dma_process_request(struct omap_dma_s *s, int request)
278 struct omap_dma_channel_s *ch = s->ch;
280 for (channel = 0; channel < s->chans; channel ++, ch ++) {
281 if (ch->enable && ch->sync == request) {
283 omap_dma_activate_channel(s, ch);
284 else if (!ch->pending_request)
285 ch->pending_request = 1;
287 /* Request collision */
288 /* Second request received while processing other request */
289 ch->status |= EVENT_DROP_INTR;
296 omap_dma_interrupts_update(s);
299 static void omap_dma_channel_run(struct omap_dma_s *s)
304 struct omap_dma_port_if_s *src_p, *dest_p;
305 struct omap_dma_reg_set_s *a;
306 struct omap_dma_channel_s *ch;
308 for (ch = s->ch; n; n --, ch ++) {
314 src_p = &s->mpu->port[ch->port[0]];
315 dest_p = &s->mpu->port[ch->port[1]];
316 if ((!ch->constant_fill && !src_p->addr_valid(s->mpu, a->src)) ||
317 (!dest_p->addr_valid(s->mpu, a->dest))) {
320 if (ch->interrupts & TIMEOUT_INTR)
321 ch->status |= TIMEOUT_INTR;
322 omap_dma_deactivate_channel(s, ch);
325 printf("%s: Bus time-out in DMA%i operation\n",
326 __FUNCTION__, s->chans - n);
330 while (status == ch->status && ch->active) {
331 /* Transfer a single element */
332 /* FIXME: check the endianness */
333 if (!ch->constant_fill)
334 cpu_physical_memory_read(a->src, value, ch->data_type);
336 *(uint32_t *) value = ch->color;
338 if (!ch->transparent_copy ||
339 *(uint32_t *) value != ch->color)
340 cpu_physical_memory_write(a->dest, value, ch->data_type);
342 a->src += a->elem_delta[0];
343 a->dest += a->elem_delta[1];
346 /* If the channel is element synchronized, deactivate it */
347 if (ch->sync && !ch->fs && !ch->bs)
348 omap_dma_deactivate_channel(s, ch);
350 /* If it is the last frame, set the LAST_FRAME interrupt */
351 if (a->element == 1 && a->frame == a->frames - 1)
352 if (ch->interrupts & LAST_FRAME_INTR)
353 ch->status |= LAST_FRAME_INTR;
355 /* If the half of the frame was reached, set the HALF_FRAME
357 if (a->element == (a->elements >> 1))
358 if (ch->interrupts & HALF_FRAME_INTR)
359 ch->status |= HALF_FRAME_INTR;
361 if (a->element == a->elements) {
364 a->src += a->frame_delta[0];
365 a->dest += a->frame_delta[1];
368 /* If the channel is frame synchronized, deactivate it */
369 if (ch->sync && ch->fs)
370 omap_dma_deactivate_channel(s, ch);
372 /* If the channel is async, update cpc */
374 ch->cpc = a->dest & 0xffff;
376 /* Set the END_FRAME interrupt */
377 if (ch->interrupts & END_FRAME_INTR)
378 ch->status |= END_FRAME_INTR;
380 if (a->frame == a->frames) {
382 /* Disable the channel */
384 if (ch->omap_3_1_compatible_disable) {
385 omap_dma_disable_channel(s, ch);
386 if (ch->link_enabled)
387 omap_dma_enable_channel(s,
388 &s->ch[ch->link_next_ch]);
391 omap_dma_disable_channel(s, ch);
392 else if (ch->repeat || ch->end_prog)
393 omap_dma_channel_load(s, ch);
395 ch->waiting_end_prog = 1;
396 omap_dma_deactivate_channel(s, ch);
400 if (ch->interrupts & END_BLOCK_INTR)
401 ch->status |= END_BLOCK_INTR;
407 omap_dma_interrupts_update(s);
408 if (s->run_count && s->delay)
409 qemu_mod_timer(s->tm, qemu_get_clock(vm_clock) + s->delay);
412 void omap_dma_reset(struct omap_dma_s *s)
416 qemu_del_timer(s->tm);
420 s->lcd_ch.src = emiff;
421 s->lcd_ch.condition = 0;
422 s->lcd_ch.interrupts = 0;
424 omap_dma_enable_3_1_mapping(s);
425 for (i = 0; i < s->chans; i ++) {
426 memset(&s->ch[i].burst, 0, sizeof(s->ch[i].burst));
427 memset(&s->ch[i].port, 0, sizeof(s->ch[i].port));
428 memset(&s->ch[i].mode, 0, sizeof(s->ch[i].mode));
429 memset(&s->ch[i].elements, 0, sizeof(s->ch[i].elements));
430 memset(&s->ch[i].frames, 0, sizeof(s->ch[i].frames));
431 memset(&s->ch[i].frame_index, 0, sizeof(s->ch[i].frame_index));
432 memset(&s->ch[i].element_index, 0, sizeof(s->ch[i].element_index));
433 memset(&s->ch[i].data_type, 0, sizeof(s->ch[i].data_type));
434 memset(&s->ch[i].transparent_copy, 0,
435 sizeof(s->ch[i].transparent_copy));
436 memset(&s->ch[i].constant_fill, 0, sizeof(s->ch[i].constant_fill));
437 memset(&s->ch[i].color, 0, sizeof(s->ch[i].color));
438 memset(&s->ch[i].end_prog, 0, sizeof(s->ch[i].end_prog));
439 memset(&s->ch[i].repeat, 0, sizeof(s->ch[i].repeat));
440 memset(&s->ch[i].auto_init, 0, sizeof(s->ch[i].auto_init));
441 memset(&s->ch[i].link_enabled, 0, sizeof(s->ch[i].link_enabled));
442 memset(&s->ch[i].link_next_ch, 0, sizeof(s->ch[i].link_next_ch));
443 s->ch[i].interrupts = 0x0003;
444 memset(&s->ch[i].status, 0, sizeof(s->ch[i].status));
445 memset(&s->ch[i].active, 0, sizeof(s->ch[i].active));
446 memset(&s->ch[i].enable, 0, sizeof(s->ch[i].enable));
447 memset(&s->ch[i].sync, 0, sizeof(s->ch[i].sync));
448 memset(&s->ch[i].pending_request, 0, sizeof(s->ch[i].pending_request));
449 memset(&s->ch[i].waiting_end_prog, 0,
450 sizeof(s->ch[i].waiting_end_prog));
451 memset(&s->ch[i].cpc, 0, sizeof(s->ch[i].cpc));
452 memset(&s->ch[i].fs, 0, sizeof(s->ch[i].fs));
453 memset(&s->ch[i].bs, 0, sizeof(s->ch[i].bs));
454 memset(&s->ch[i].omap_3_1_compatible_disable, 0,
455 sizeof(s->ch[i].omap_3_1_compatible_disable));
456 memset(&s->ch[i].active_set, 0, sizeof(s->ch[i].active_set));
457 memset(&s->ch[i].priority, 0, sizeof(s->ch[i].priority));
458 memset(&s->ch[i].interleave_disabled, 0,
459 sizeof(s->ch[i].interleave_disabled));
460 memset(&s->ch[i].type, 0, sizeof(s->ch[i].type));
464 static int omap_dma_ch_reg_read(struct omap_dma_s *s,
465 struct omap_dma_channel_s *ch, int reg, uint16_t *value)
468 case 0x00: /* SYS_DMA_CSDP_CH0 */
469 *value = (ch->burst[1] << 14) |
470 (ch->pack[1] << 13) |
472 (ch->burst[0] << 7) |
475 (ch->data_type >> 1);
478 case 0x02: /* SYS_DMA_CCR_CH0 */
479 if (s->model == omap_dma_3_1)
480 *value = 0 << 10; /* FIFO_FLUSH reads as 0 */
482 *value = ch->omap_3_1_compatible_disable << 10;
483 *value |= (ch->mode[1] << 14) |
484 (ch->mode[0] << 12) |
485 (ch->end_prog << 11) |
487 (ch->auto_init << 8) |
489 (ch->priority << 6) |
490 (ch->fs << 5) | ch->sync;
493 case 0x04: /* SYS_DMA_CICR_CH0 */
494 *value = ch->interrupts;
497 case 0x06: /* SYS_DMA_CSR_CH0 */
500 if (!ch->omap_3_1_compatible_disable && ch->sibling) {
501 *value |= (ch->sibling->status & 0x3f) << 6;
502 ch->sibling->status &= SYNC;
504 qemu_irq_lower(ch->irq);
507 case 0x08: /* SYS_DMA_CSSA_L_CH0 */
508 *value = ch->addr[0] & 0x0000ffff;
511 case 0x0a: /* SYS_DMA_CSSA_U_CH0 */
512 *value = ch->addr[0] >> 16;
515 case 0x0c: /* SYS_DMA_CDSA_L_CH0 */
516 *value = ch->addr[1] & 0x0000ffff;
519 case 0x0e: /* SYS_DMA_CDSA_U_CH0 */
520 *value = ch->addr[1] >> 16;
523 case 0x10: /* SYS_DMA_CEN_CH0 */
524 *value = ch->elements;
527 case 0x12: /* SYS_DMA_CFN_CH0 */
531 case 0x14: /* SYS_DMA_CFI_CH0 */
532 *value = ch->frame_index[0];
535 case 0x16: /* SYS_DMA_CEI_CH0 */
536 *value = ch->element_index[0];
539 case 0x18: /* SYS_DMA_CPC_CH0 or DMA_CSAC */
540 if (ch->omap_3_1_compatible_disable)
541 *value = ch->active_set.src & 0xffff; /* CSAC */
546 case 0x1a: /* DMA_CDAC */
547 *value = ch->active_set.dest & 0xffff; /* CDAC */
550 case 0x1c: /* DMA_CDEI */
551 *value = ch->element_index[1];
554 case 0x1e: /* DMA_CDFI */
555 *value = ch->frame_index[1];
558 case 0x20: /* DMA_COLOR_L */
559 *value = ch->color & 0xffff;
562 case 0x22: /* DMA_COLOR_U */
563 *value = ch->color >> 16;
566 case 0x24: /* DMA_CCR2 */
567 *value = (ch->bs << 2) |
568 (ch->transparent_copy << 1) |
572 case 0x28: /* DMA_CLNK_CTRL */
573 *value = (ch->link_enabled << 15) |
574 (ch->link_next_ch & 0xf);
577 case 0x2a: /* DMA_LCH_CTRL */
578 *value = (ch->interleave_disabled << 15) |
588 static int omap_dma_ch_reg_write(struct omap_dma_s *s,
589 struct omap_dma_channel_s *ch, int reg, uint16_t value)
592 case 0x00: /* SYS_DMA_CSDP_CH0 */
593 ch->burst[1] = (value & 0xc000) >> 14;
594 ch->pack[1] = (value & 0x2000) >> 13;
595 ch->port[1] = (enum omap_dma_port) ((value & 0x1e00) >> 9);
596 ch->burst[0] = (value & 0x0180) >> 7;
597 ch->pack[0] = (value & 0x0040) >> 6;
598 ch->port[0] = (enum omap_dma_port) ((value & 0x003c) >> 2);
599 ch->data_type = (1 << (value & 3));
600 if (ch->port[0] >= omap_dma_port_last)
601 printf("%s: invalid DMA port %i\n", __FUNCTION__,
603 if (ch->port[1] >= omap_dma_port_last)
604 printf("%s: invalid DMA port %i\n", __FUNCTION__,
606 if ((value & 3) == 3)
607 printf("%s: bad data_type for DMA channel\n", __FUNCTION__);
610 case 0x02: /* SYS_DMA_CCR_CH0 */
611 ch->mode[1] = (omap_dma_addressing_t) ((value & 0xc000) >> 14);
612 ch->mode[0] = (omap_dma_addressing_t) ((value & 0x3000) >> 12);
613 ch->end_prog = (value & 0x0800) >> 11;
614 if (s->model > omap_dma_3_1)
615 ch->omap_3_1_compatible_disable = (value >> 10) & 0x1;
616 ch->repeat = (value & 0x0200) >> 9;
617 ch->auto_init = (value & 0x0100) >> 8;
618 ch->priority = (value & 0x0040) >> 6;
619 ch->fs = (value & 0x0020) >> 5;
620 ch->sync = value & 0x001f;
623 omap_dma_enable_channel(s, ch);
625 omap_dma_disable_channel(s, ch);
628 omap_dma_channel_end_prog(s, ch);
632 case 0x04: /* SYS_DMA_CICR_CH0 */
633 ch->interrupts = value;
636 case 0x06: /* SYS_DMA_CSR_CH0 */
637 OMAP_RO_REG((target_phys_addr_t) reg);
640 case 0x08: /* SYS_DMA_CSSA_L_CH0 */
641 ch->addr[0] &= 0xffff0000;
642 ch->addr[0] |= value;
645 case 0x0a: /* SYS_DMA_CSSA_U_CH0 */
646 ch->addr[0] &= 0x0000ffff;
647 ch->addr[0] |= (uint32_t) value << 16;
650 case 0x0c: /* SYS_DMA_CDSA_L_CH0 */
651 ch->addr[1] &= 0xffff0000;
652 ch->addr[1] |= value;
655 case 0x0e: /* SYS_DMA_CDSA_U_CH0 */
656 ch->addr[1] &= 0x0000ffff;
657 ch->addr[1] |= (uint32_t) value << 16;
660 case 0x10: /* SYS_DMA_CEN_CH0 */
661 ch->elements = value;
664 case 0x12: /* SYS_DMA_CFN_CH0 */
668 case 0x14: /* SYS_DMA_CFI_CH0 */
669 ch->frame_index[0] = (int16_t) value;
672 case 0x16: /* SYS_DMA_CEI_CH0 */
673 ch->element_index[0] = (int16_t) value;
676 case 0x18: /* SYS_DMA_CPC_CH0 or DMA_CSAC */
677 OMAP_RO_REG((target_phys_addr_t) reg);
680 case 0x1c: /* DMA_CDEI */
681 ch->element_index[1] = (int16_t) value;
684 case 0x1e: /* DMA_CDFI */
685 ch->frame_index[1] = (int16_t) value;
688 case 0x20: /* DMA_COLOR_L */
689 ch->color &= 0xffff0000;
693 case 0x22: /* DMA_COLOR_U */
695 ch->color |= value << 16;
698 case 0x24: /* DMA_CCR2 */
699 ch->bs = (value >> 2) & 0x1;
700 ch->transparent_copy = (value >> 1) & 0x1;
701 ch->constant_fill = value & 0x1;
704 case 0x28: /* DMA_CLNK_CTRL */
705 ch->link_enabled = (value >> 15) & 0x1;
706 if (value & (1 << 14)) { /* Stop_Lnk */
707 ch->link_enabled = 0;
708 omap_dma_disable_channel(s, ch);
710 ch->link_next_ch = value & 0x1f;
713 case 0x2a: /* DMA_LCH_CTRL */
714 ch->interleave_disabled = (value >> 15) & 0x1;
715 ch->type = value & 0xf;
724 static int omap_dma_3_2_lcd_write(struct omap_dma_lcd_channel_s *s, int offset,
728 case 0xbc0: /* DMA_LCD_CSDP */
729 s->brust_f2 = (value >> 14) & 0x3;
730 s->pack_f2 = (value >> 13) & 0x1;
731 s->data_type_f2 = (1 << ((value >> 11) & 0x3));
732 s->brust_f1 = (value >> 7) & 0x3;
733 s->pack_f1 = (value >> 6) & 0x1;
734 s->data_type_f1 = (1 << ((value >> 0) & 0x3));
737 case 0xbc2: /* DMA_LCD_CCR */
738 s->mode_f2 = (value >> 14) & 0x3;
739 s->mode_f1 = (value >> 12) & 0x3;
740 s->end_prog = (value >> 11) & 0x1;
741 s->omap_3_1_compatible_disable = (value >> 10) & 0x1;
742 s->repeat = (value >> 9) & 0x1;
743 s->auto_init = (value >> 8) & 0x1;
744 s->running = (value >> 7) & 0x1;
745 s->priority = (value >> 6) & 0x1;
746 s->bs = (value >> 4) & 0x1;
749 case 0xbc4: /* DMA_LCD_CTRL */
750 s->dst = (value >> 8) & 0x1;
751 s->src = ((value >> 6) & 0x3) << 1;
753 /* Assume no bus errors and thus no BUS_ERROR irq bits. */
754 s->interrupts = (value >> 1) & 1;
758 case 0xbc8: /* TOP_B1_L */
759 s->src_f1_top &= 0xffff0000;
760 s->src_f1_top |= 0x0000ffff & value;
763 case 0xbca: /* TOP_B1_U */
764 s->src_f1_top &= 0x0000ffff;
765 s->src_f1_top |= value << 16;
768 case 0xbcc: /* BOT_B1_L */
769 s->src_f1_bottom &= 0xffff0000;
770 s->src_f1_bottom |= 0x0000ffff & value;
773 case 0xbce: /* BOT_B1_U */
774 s->src_f1_bottom &= 0x0000ffff;
775 s->src_f1_bottom |= (uint32_t) value << 16;
778 case 0xbd0: /* TOP_B2_L */
779 s->src_f2_top &= 0xffff0000;
780 s->src_f2_top |= 0x0000ffff & value;
783 case 0xbd2: /* TOP_B2_U */
784 s->src_f2_top &= 0x0000ffff;
785 s->src_f2_top |= (uint32_t) value << 16;
788 case 0xbd4: /* BOT_B2_L */
789 s->src_f2_bottom &= 0xffff0000;
790 s->src_f2_bottom |= 0x0000ffff & value;
793 case 0xbd6: /* BOT_B2_U */
794 s->src_f2_bottom &= 0x0000ffff;
795 s->src_f2_bottom |= (uint32_t) value << 16;
798 case 0xbd8: /* DMA_LCD_SRC_EI_B1 */
799 s->element_index_f1 = value;
802 case 0xbda: /* DMA_LCD_SRC_FI_B1_L */
803 s->frame_index_f1 &= 0xffff0000;
804 s->frame_index_f1 |= 0x0000ffff & value;
807 case 0xbf4: /* DMA_LCD_SRC_FI_B1_U */
808 s->frame_index_f1 &= 0x0000ffff;
809 s->frame_index_f1 |= (uint32_t) value << 16;
812 case 0xbdc: /* DMA_LCD_SRC_EI_B2 */
813 s->element_index_f2 = value;
816 case 0xbde: /* DMA_LCD_SRC_FI_B2_L */
817 s->frame_index_f2 &= 0xffff0000;
818 s->frame_index_f2 |= 0x0000ffff & value;
821 case 0xbf6: /* DMA_LCD_SRC_FI_B2_U */
822 s->frame_index_f2 &= 0x0000ffff;
823 s->frame_index_f2 |= (uint32_t) value << 16;
826 case 0xbe0: /* DMA_LCD_SRC_EN_B1 */
827 s->elements_f1 = value;
830 case 0xbe4: /* DMA_LCD_SRC_FN_B1 */
831 s->frames_f1 = value;
834 case 0xbe2: /* DMA_LCD_SRC_EN_B2 */
835 s->elements_f2 = value;
838 case 0xbe6: /* DMA_LCD_SRC_FN_B2 */
839 s->frames_f2 = value;
842 case 0xbea: /* DMA_LCD_LCH_CTRL */
843 s->lch_type = value & 0xf;
852 static int omap_dma_3_2_lcd_read(struct omap_dma_lcd_channel_s *s, int offset,
856 case 0xbc0: /* DMA_LCD_CSDP */
857 *ret = (s->brust_f2 << 14) |
859 ((s->data_type_f2 >> 1) << 11) |
862 ((s->data_type_f1 >> 1) << 0);
865 case 0xbc2: /* DMA_LCD_CCR */
866 *ret = (s->mode_f2 << 14) |
868 (s->end_prog << 11) |
869 (s->omap_3_1_compatible_disable << 10) |
871 (s->auto_init << 8) |
877 case 0xbc4: /* DMA_LCD_CTRL */
878 qemu_irq_lower(s->irq);
879 *ret = (s->dst << 8) |
880 ((s->src & 0x6) << 5) |
881 (s->condition << 3) |
882 (s->interrupts << 1) |
886 case 0xbc8: /* TOP_B1_L */
887 *ret = s->src_f1_top & 0xffff;
890 case 0xbca: /* TOP_B1_U */
891 *ret = s->src_f1_top >> 16;
894 case 0xbcc: /* BOT_B1_L */
895 *ret = s->src_f1_bottom & 0xffff;
898 case 0xbce: /* BOT_B1_U */
899 *ret = s->src_f1_bottom >> 16;
902 case 0xbd0: /* TOP_B2_L */
903 *ret = s->src_f2_top & 0xffff;
906 case 0xbd2: /* TOP_B2_U */
907 *ret = s->src_f2_top >> 16;
910 case 0xbd4: /* BOT_B2_L */
911 *ret = s->src_f2_bottom & 0xffff;
914 case 0xbd6: /* BOT_B2_U */
915 *ret = s->src_f2_bottom >> 16;
918 case 0xbd8: /* DMA_LCD_SRC_EI_B1 */
919 *ret = s->element_index_f1;
922 case 0xbda: /* DMA_LCD_SRC_FI_B1_L */
923 *ret = s->frame_index_f1 & 0xffff;
926 case 0xbf4: /* DMA_LCD_SRC_FI_B1_U */
927 *ret = s->frame_index_f1 >> 16;
930 case 0xbdc: /* DMA_LCD_SRC_EI_B2 */
931 *ret = s->element_index_f2;
934 case 0xbde: /* DMA_LCD_SRC_FI_B2_L */
935 *ret = s->frame_index_f2 & 0xffff;
938 case 0xbf6: /* DMA_LCD_SRC_FI_B2_U */
939 *ret = s->frame_index_f2 >> 16;
942 case 0xbe0: /* DMA_LCD_SRC_EN_B1 */
943 *ret = s->elements_f1;
946 case 0xbe4: /* DMA_LCD_SRC_FN_B1 */
950 case 0xbe2: /* DMA_LCD_SRC_EN_B2 */
951 *ret = s->elements_f2;
954 case 0xbe6: /* DMA_LCD_SRC_FN_B2 */
958 case 0xbea: /* DMA_LCD_LCH_CTRL */
968 static int omap_dma_3_1_lcd_write(struct omap_dma_lcd_channel_s *s, int offset,
972 case 0x300: /* SYS_DMA_LCD_CTRL */
973 s->src = (value & 0x40) ? imif : emiff;
975 /* Assume no bus errors and thus no BUS_ERROR irq bits. */
976 s->interrupts = (value >> 1) & 1;
980 case 0x302: /* SYS_DMA_LCD_TOP_F1_L */
981 s->src_f1_top &= 0xffff0000;
982 s->src_f1_top |= 0x0000ffff & value;
985 case 0x304: /* SYS_DMA_LCD_TOP_F1_U */
986 s->src_f1_top &= 0x0000ffff;
987 s->src_f1_top |= value << 16;
990 case 0x306: /* SYS_DMA_LCD_BOT_F1_L */
991 s->src_f1_bottom &= 0xffff0000;
992 s->src_f1_bottom |= 0x0000ffff & value;
995 case 0x308: /* SYS_DMA_LCD_BOT_F1_U */
996 s->src_f1_bottom &= 0x0000ffff;
997 s->src_f1_bottom |= value << 16;
1000 case 0x30a: /* SYS_DMA_LCD_TOP_F2_L */
1001 s->src_f2_top &= 0xffff0000;
1002 s->src_f2_top |= 0x0000ffff & value;
1005 case 0x30c: /* SYS_DMA_LCD_TOP_F2_U */
1006 s->src_f2_top &= 0x0000ffff;
1007 s->src_f2_top |= value << 16;
1010 case 0x30e: /* SYS_DMA_LCD_BOT_F2_L */
1011 s->src_f2_bottom &= 0xffff0000;
1012 s->src_f2_bottom |= 0x0000ffff & value;
1015 case 0x310: /* SYS_DMA_LCD_BOT_F2_U */
1016 s->src_f2_bottom &= 0x0000ffff;
1017 s->src_f2_bottom |= value << 16;
1026 static int omap_dma_3_1_lcd_read(struct omap_dma_lcd_channel_s *s, int offset,
1032 case 0x300: /* SYS_DMA_LCD_CTRL */
1035 qemu_irq_lower(s->irq);
1036 *ret = ((s->src == imif) << 6) | (i << 3) |
1037 (s->interrupts << 1) | s->dual;
1040 case 0x302: /* SYS_DMA_LCD_TOP_F1_L */
1041 *ret = s->src_f1_top & 0xffff;
1044 case 0x304: /* SYS_DMA_LCD_TOP_F1_U */
1045 *ret = s->src_f1_top >> 16;
1048 case 0x306: /* SYS_DMA_LCD_BOT_F1_L */
1049 *ret = s->src_f1_bottom & 0xffff;
1052 case 0x308: /* SYS_DMA_LCD_BOT_F1_U */
1053 *ret = s->src_f1_bottom >> 16;
1056 case 0x30a: /* SYS_DMA_LCD_TOP_F2_L */
1057 *ret = s->src_f2_top & 0xffff;
1060 case 0x30c: /* SYS_DMA_LCD_TOP_F2_U */
1061 *ret = s->src_f2_top >> 16;
1064 case 0x30e: /* SYS_DMA_LCD_BOT_F2_L */
1065 *ret = s->src_f2_bottom & 0xffff;
1068 case 0x310: /* SYS_DMA_LCD_BOT_F2_U */
1069 *ret = s->src_f2_bottom >> 16;
1078 static int omap_dma_sys_write(struct omap_dma_s *s, int offset, uint16_t value)
1081 case 0x400: /* SYS_DMA_GCR */
1085 case 0x404: /* DMA_GSCR */
1087 omap_dma_disable_3_1_mapping(s);
1089 omap_dma_enable_3_1_mapping(s);
1092 case 0x408: /* DMA_GRST */
1103 static int omap_dma_sys_read(struct omap_dma_s *s, int offset,
1107 case 0x400: /* SYS_DMA_GCR */
1111 case 0x404: /* DMA_GSCR */
1112 *ret = s->omap_3_1_mapping_disabled << 3;
1115 case 0x408: /* DMA_GRST */
1119 case 0x442: /* DMA_HW_ID */
1120 case 0x444: /* DMA_PCh2_ID */
1121 case 0x446: /* DMA_PCh0_ID */
1122 case 0x448: /* DMA_PCh1_ID */
1123 case 0x44a: /* DMA_PChG_ID */
1124 case 0x44c: /* DMA_PChD_ID */
1128 case 0x44e: /* DMA_CAPS_0_U */
1129 *ret = (1 << 3) | /* Constant Fill Capacity */
1130 (1 << 2); /* Transparent BLT Capacity */
1133 case 0x450: /* DMA_CAPS_0_L */
1134 case 0x452: /* DMA_CAPS_1_U */
1138 case 0x454: /* DMA_CAPS_1_L */
1139 *ret = (1 << 1); /* 1-bit palletized capability */
1142 case 0x456: /* DMA_CAPS_2 */
1143 *ret = (1 << 8) | /* SSDIC */
1144 (1 << 7) | /* DDIAC */
1145 (1 << 6) | /* DSIAC */
1146 (1 << 5) | /* DPIAC */
1147 (1 << 4) | /* DCAC */
1148 (1 << 3) | /* SDIAC */
1149 (1 << 2) | /* SSIAC */
1150 (1 << 1) | /* SPIAC */
1154 case 0x458: /* DMA_CAPS_3 */
1155 *ret = (1 << 5) | /* CCC */
1157 (1 << 3) | /* ARC */
1158 (1 << 2) | /* AEC */
1159 (1 << 1) | /* FSC */
1163 case 0x45a: /* DMA_CAPS_4 */
1164 *ret = (1 << 6) | /* SSC */
1165 (1 << 5) | /* BIC */
1166 (1 << 4) | /* LFIC */
1167 (1 << 3) | /* FIC */
1168 (1 << 2) | /* HFIC */
1169 (1 << 1) | /* EDIC */
1173 case 0x460: /* DMA_PCh2_SR */
1174 case 0x480: /* DMA_PCh0_SR */
1175 case 0x482: /* DMA_PCh1_SR */
1176 case 0x4c0: /* DMA_PChD_SR_0 */
1177 printf("%s: Physical Channel Status Registers not implemented.\n",
1188 static uint32_t omap_dma_read(void *opaque, target_phys_addr_t addr)
1190 struct omap_dma_s *s = (struct omap_dma_s *) opaque;
1191 int reg, ch, offset = addr - s->base;
1195 case 0x300 ... 0x3fe:
1196 if (s->model == omap_dma_3_1 || !s->omap_3_1_mapping_disabled) {
1197 if (omap_dma_3_1_lcd_read(&s->lcd_ch, offset, &ret))
1202 case 0x000 ... 0x2fe:
1203 reg = offset & 0x3f;
1204 ch = (offset >> 6) & 0x0f;
1205 if (omap_dma_ch_reg_read(s, &s->ch[ch], reg, &ret))
1209 case 0x404 ... 0x4fe:
1210 if (s->model == omap_dma_3_1)
1214 if (omap_dma_sys_read(s, offset, &ret))
1218 case 0xb00 ... 0xbfe:
1219 if (s->model == omap_dma_3_2 && s->omap_3_1_mapping_disabled) {
1220 if (omap_dma_3_2_lcd_read(&s->lcd_ch, offset, &ret))
1231 static void omap_dma_write(void *opaque, target_phys_addr_t addr,
1234 struct omap_dma_s *s = (struct omap_dma_s *) opaque;
1235 int reg, ch, offset = addr - s->base;
1238 case 0x300 ... 0x3fe:
1239 if (s->model == omap_dma_3_1 || !s->omap_3_1_mapping_disabled) {
1240 if (omap_dma_3_1_lcd_write(&s->lcd_ch, offset, value))
1245 case 0x000 ... 0x2fe:
1246 reg = offset & 0x3f;
1247 ch = (offset >> 6) & 0x0f;
1248 if (omap_dma_ch_reg_write(s, &s->ch[ch], reg, value))
1252 case 0x404 ... 0x4fe:
1253 if (s->model == omap_dma_3_1)
1257 if (omap_dma_sys_write(s, offset, value))
1261 case 0xb00 ... 0xbfe:
1262 if (s->model == omap_dma_3_2 && s->omap_3_1_mapping_disabled) {
1263 if (omap_dma_3_2_lcd_write(&s->lcd_ch, offset, value))
1273 static CPUReadMemoryFunc *omap_dma_readfn[] = {
1274 omap_badwidth_read16,
1276 omap_badwidth_read16,
1279 static CPUWriteMemoryFunc *omap_dma_writefn[] = {
1280 omap_badwidth_write16,
1282 omap_badwidth_write16,
1285 static void omap_dma_request(void *opaque, int drq, int req)
1287 struct omap_dma_s *s = (struct omap_dma_s *) opaque;
1288 /* The request pins are level triggered. */
1290 if (~s->drq & (1 << drq)) {
1292 omap_dma_process_request(s, drq);
1295 s->drq &= ~(1 << drq);
1298 static void omap_dma_clk_update(void *opaque, int line, int on)
1300 struct omap_dma_s *s = (struct omap_dma_s *) opaque;
1303 /* TODO: make a clever calculation */
1304 s->delay = ticks_per_sec >> 8;
1306 qemu_mod_timer(s->tm, qemu_get_clock(vm_clock) + s->delay);
1309 qemu_del_timer(s->tm);
1313 struct omap_dma_s *omap_dma_init(target_phys_addr_t base, qemu_irq *irqs,
1314 qemu_irq lcd_irq, struct omap_mpu_state_s *mpu, omap_clk clk,
1315 enum omap_dma_model model)
1317 int iomemtype, num_irqs, memsize, i;
1318 struct omap_dma_s *s = (struct omap_dma_s *)
1319 qemu_mallocz(sizeof(struct omap_dma_s));
1321 if (model == omap_dma_3_1) {
1332 s->lcd_ch.irq = lcd_irq;
1333 s->lcd_ch.mpu = mpu;
1335 s->ch[num_irqs].irq = irqs[num_irqs];
1336 for (i = 0; i < 3; i ++) {
1337 s->ch[i].sibling = &s->ch[i + 6];
1338 s->ch[i + 6].sibling = &s->ch[i];
1340 s->tm = qemu_new_timer(vm_clock, (QEMUTimerCB *) omap_dma_channel_run, s);
1341 omap_clk_adduser(s->clk, qemu_allocate_irqs(omap_dma_clk_update, s, 1)[0]);
1342 mpu->drq = qemu_allocate_irqs(omap_dma_request, s, 32);
1344 omap_dma_clk_update(s, 0, 1);
1346 iomemtype = cpu_register_io_memory(0, omap_dma_readfn,
1347 omap_dma_writefn, s);
1348 cpu_register_physical_memory(s->base, memsize, iomemtype);
1353 struct omap_dma_lcd_channel_s *omap_dma_get_lcdch(struct omap_dma_s *s)