2 * ARM PrimeCell PL330 DMA Controller
4 * Copyright (c) 2009 Samsung Electronics.
7 * Copyright (c) 2012 PetaLogix Pty Ltd.
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; version 2 or later.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, see <http://www.gnu.org/licenses/>.
17 #include "hw/sysbus.h"
18 #include "qemu/timer.h"
19 #include "sysemu/dma.h"
21 #ifndef PL330_ERR_DEBUG
22 #define PL330_ERR_DEBUG 0
25 #define DB_PRINT_L(lvl, fmt, args...) do {\
26 if (PL330_ERR_DEBUG >= lvl) {\
27 fprintf(stderr, "PL330: %s:" fmt, __func__, ## args);\
31 #define DB_PRINT(fmt, args...) DB_PRINT_L(1, fmt, ## args)
33 #define PL330_PERIPH_NUM 32
34 #define PL330_MAX_BURST_LEN 128
35 #define PL330_INSN_MAXSIZE 6
37 #define PL330_FIFO_OK 0
38 #define PL330_FIFO_STALL 1
39 #define PL330_FIFO_ERR (-1)
41 #define PL330_FAULT_UNDEF_INSTR (1 << 0)
42 #define PL330_FAULT_OPERAND_INVALID (1 << 1)
43 #define PL330_FAULT_DMAGO_ERR (1 << 4)
44 #define PL330_FAULT_EVENT_ERR (1 << 5)
45 #define PL330_FAULT_CH_PERIPH_ERR (1 << 6)
46 #define PL330_FAULT_CH_RDWR_ERR (1 << 7)
47 #define PL330_FAULT_ST_DATA_UNAVAILABLE (1 << 12)
48 #define PL330_FAULT_FIFOEMPTY_ERR (1 << 13)
49 #define PL330_FAULT_INSTR_FETCH_ERR (1 << 16)
50 #define PL330_FAULT_DATA_WRITE_ERR (1 << 17)
51 #define PL330_FAULT_DATA_READ_ERR (1 << 18)
52 #define PL330_FAULT_DBG_INSTR (1 << 30)
53 #define PL330_FAULT_LOCKUP_ERR (1 << 31)
55 #define PL330_UNTAGGED 0xff
57 #define PL330_SINGLE 0x0
58 #define PL330_BURST 0x1
60 #define PL330_WATCHDOG_LIMIT 1024
62 /* IOMEM mapped registers */
63 #define PL330_REG_DSR 0x000
64 #define PL330_REG_DPC 0x004
65 #define PL330_REG_INTEN 0x020
66 #define PL330_REG_INT_EVENT_RIS 0x024
67 #define PL330_REG_INTMIS 0x028
68 #define PL330_REG_INTCLR 0x02C
69 #define PL330_REG_FSRD 0x030
70 #define PL330_REG_FSRC 0x034
71 #define PL330_REG_FTRD 0x038
72 #define PL330_REG_FTR_BASE 0x040
73 #define PL330_REG_CSR_BASE 0x100
74 #define PL330_REG_CPC_BASE 0x104
75 #define PL330_REG_CHANCTRL 0x400
76 #define PL330_REG_DBGSTATUS 0xD00
77 #define PL330_REG_DBGCMD 0xD04
78 #define PL330_REG_DBGINST0 0xD08
79 #define PL330_REG_DBGINST1 0xD0C
80 #define PL330_REG_CR0_BASE 0xE00
81 #define PL330_REG_PERIPH_ID 0xFE0
83 #define PL330_IOMEM_SIZE 0x1000
85 #define CFG_BOOT_ADDR 2
90 static const uint32_t pl330_id[] = {
91 0x30, 0x13, 0x24, 0x00, 0x0D, 0xF0, 0x05, 0xB1
94 /* DMA channel states as they are described in PL330 Technical Reference Manual
95 * Most of them will not be used in emulation.
98 pl330_chan_stopped = 0,
99 pl330_chan_executing = 1,
100 pl330_chan_cache_miss = 2,
101 pl330_chan_updating_pc = 3,
102 pl330_chan_waiting_event = 4,
103 pl330_chan_at_barrier = 5,
104 pl330_chan_queue_busy = 6,
105 pl330_chan_waiting_periph = 7,
106 pl330_chan_killing = 8,
107 pl330_chan_completing = 9,
108 pl330_chan_fault_completing = 14,
109 pl330_chan_fault = 15,
112 typedef struct PL330State PL330State;
114 typedef struct PL330Chan {
122 uint32_t watchdog_timer;
125 uint8_t request_flag;
137 static const VMStateDescription vmstate_pl330_chan = {
138 .name = "pl330_chan",
140 .minimum_version_id = 1,
141 .minimum_version_id_old = 1,
142 .fields = (VMStateField[]) {
143 VMSTATE_UINT32(src, PL330Chan),
144 VMSTATE_UINT32(dst, PL330Chan),
145 VMSTATE_UINT32(pc, PL330Chan),
146 VMSTATE_UINT32(control, PL330Chan),
147 VMSTATE_UINT32(status, PL330Chan),
148 VMSTATE_UINT32_ARRAY(lc, PL330Chan, 2),
149 VMSTATE_UINT32(fault_type, PL330Chan),
150 VMSTATE_UINT32(watchdog_timer, PL330Chan),
151 VMSTATE_BOOL(ns, PL330Chan),
152 VMSTATE_UINT8(request_flag, PL330Chan),
153 VMSTATE_UINT8(wakeup, PL330Chan),
154 VMSTATE_UINT8(wfp_sbp, PL330Chan),
155 VMSTATE_UINT8(state, PL330Chan),
156 VMSTATE_UINT8(stall, PL330Chan),
157 VMSTATE_END_OF_LIST()
161 typedef struct PL330Fifo {
169 static const VMStateDescription vmstate_pl330_fifo = {
170 .name = "pl330_chan",
172 .minimum_version_id = 1,
173 .minimum_version_id_old = 1,
174 .fields = (VMStateField[]) {
175 VMSTATE_VBUFFER_UINT32(buf, PL330Fifo, 1, NULL, 0, buf_size),
176 VMSTATE_VBUFFER_UINT32(tag, PL330Fifo, 1, NULL, 0, buf_size),
177 VMSTATE_UINT32(head, PL330Fifo),
178 VMSTATE_UINT32(num, PL330Fifo),
179 VMSTATE_UINT32(buf_size, PL330Fifo),
180 VMSTATE_END_OF_LIST()
184 typedef struct PL330QueueEntry {
194 static const VMStateDescription vmstate_pl330_queue_entry = {
195 .name = "pl330_queue_entry",
197 .minimum_version_id = 1,
198 .minimum_version_id_old = 1,
199 .fields = (VMStateField[]) {
200 VMSTATE_UINT32(addr, PL330QueueEntry),
201 VMSTATE_UINT32(len, PL330QueueEntry),
202 VMSTATE_UINT8(n, PL330QueueEntry),
203 VMSTATE_BOOL(inc, PL330QueueEntry),
204 VMSTATE_BOOL(z, PL330QueueEntry),
205 VMSTATE_UINT8(tag, PL330QueueEntry),
206 VMSTATE_UINT8(seqn, PL330QueueEntry),
207 VMSTATE_END_OF_LIST()
211 typedef struct PL330Queue {
213 PL330QueueEntry *queue;
217 static const VMStateDescription vmstate_pl330_queue = {
218 .name = "pl330_queue",
220 .minimum_version_id = 1,
221 .minimum_version_id_old = 1,
222 .fields = (VMStateField[]) {
223 VMSTATE_STRUCT_VARRAY_UINT32(queue, PL330Queue, queue_size, 1,
224 vmstate_pl330_queue_entry, PL330QueueEntry),
225 VMSTATE_END_OF_LIST()
235 /* Config registers. cfg[5] = CfgDn. */
237 #define EVENT_SEC_STATE 3
238 #define PERIPH_SEC_STATE 4
239 /* cfg 0 bits and pieces */
241 uint8_t num_periph_req;
243 uint8_t mgr_ns_at_rst;
244 /* cfg 1 bits and pieces */
246 uint8_t num_i_cache_lines;
247 /* CRD bits and pieces */
253 uint16_t data_buffer_dep;
258 PL330Queue read_queue;
259 PL330Queue write_queue;
262 QEMUTimer *timer; /* is used for restore dma. */
268 uint8_t debug_status;
269 uint8_t num_faulting;
270 uint8_t periph_busy[PL330_PERIPH_NUM];
274 #define TYPE_PL330 "pl330"
275 #define PL330(obj) OBJECT_CHECK(PL330State, (obj), TYPE_PL330)
277 static const VMStateDescription vmstate_pl330 = {
280 .minimum_version_id = 1,
281 .minimum_version_id_old = 1,
282 .fields = (VMStateField[]) {
283 VMSTATE_STRUCT(manager, PL330State, 0, vmstate_pl330_chan, PL330Chan),
284 VMSTATE_STRUCT_VARRAY_UINT32(chan, PL330State, num_chnls, 0,
285 vmstate_pl330_chan, PL330Chan),
286 VMSTATE_VBUFFER_UINT32(lo_seqn, PL330State, 1, NULL, 0, num_chnls),
287 VMSTATE_VBUFFER_UINT32(hi_seqn, PL330State, 1, NULL, 0, num_chnls),
288 VMSTATE_STRUCT(fifo, PL330State, 0, vmstate_pl330_fifo, PL330Fifo),
289 VMSTATE_STRUCT(read_queue, PL330State, 0, vmstate_pl330_queue,
291 VMSTATE_STRUCT(write_queue, PL330State, 0, vmstate_pl330_queue,
293 VMSTATE_TIMER(timer, PL330State),
294 VMSTATE_UINT32(inten, PL330State),
295 VMSTATE_UINT32(int_status, PL330State),
296 VMSTATE_UINT32(ev_status, PL330State),
297 VMSTATE_UINT32_ARRAY(dbg, PL330State, 2),
298 VMSTATE_UINT8(debug_status, PL330State),
299 VMSTATE_UINT8(num_faulting, PL330State),
300 VMSTATE_UINT8_ARRAY(periph_busy, PL330State, PL330_PERIPH_NUM),
301 VMSTATE_END_OF_LIST()
305 typedef struct PL330InsnDesc {
306 /* OPCODE of the instruction */
308 /* Mask so we can select several sibling instructions, such as
309 DMALD, DMALDS and DMALDB */
311 /* Size of instruction in bytes */
314 void (*exec)(PL330Chan *, uint8_t opcode, uint8_t *args, int len);
318 /* MFIFO Implementation
320 * MFIFO is implemented as a cyclic buffer of BUF_SIZE size. Tagged bytes are
321 * stored in this buffer. Data is stored in BUF field, tags - in the
322 * corresponding array elements of TAG field.
325 /* Initialize queue. */
327 static void pl330_fifo_init(PL330Fifo *s, uint32_t size)
329 s->buf = g_malloc0(size);
330 s->tag = g_malloc0(size);
334 /* Cyclic increment */
336 static inline int pl330_fifo_inc(PL330Fifo *s, int x)
338 return (x + 1) % s->buf_size;
341 /* Number of empty bytes in MFIFO */
343 static inline int pl330_fifo_num_free(PL330Fifo *s)
345 return s->buf_size - s->num;
348 /* Push LEN bytes of data stored in BUF to MFIFO and tag it with TAG.
349 * Zero returned on success, PL330_FIFO_STALL if there is no enough free
350 * space in MFIFO to store requested amount of data. If push was unsuccessful
351 * no data is stored to MFIFO.
354 static int pl330_fifo_push(PL330Fifo *s, uint8_t *buf, int len, uint8_t tag)
358 if (s->buf_size - s->num < len) {
359 return PL330_FIFO_STALL;
361 for (i = 0; i < len; i++) {
362 int push_idx = (s->head + s->num + i) % s->buf_size;
363 s->buf[push_idx] = buf[i];
364 s->tag[push_idx] = tag;
367 return PL330_FIFO_OK;
370 /* Get LEN bytes of data from MFIFO and store it to BUF. Tag value of each
371 * byte is verified. Zero returned on success, PL330_FIFO_ERR on tag mismatch
372 * and PL330_FIFO_STALL if there is no enough data in MFIFO. If get was
373 * unsuccessful no data is removed from MFIFO.
376 static int pl330_fifo_get(PL330Fifo *s, uint8_t *buf, int len, uint8_t tag)
381 return PL330_FIFO_STALL;
383 for (i = 0; i < len; i++) {
384 if (s->tag[s->head] == tag) {
385 int get_idx = (s->head + i) % s->buf_size;
386 buf[i] = s->buf[get_idx];
387 } else { /* Tag mismatch - Rollback transaction */
388 return PL330_FIFO_ERR;
391 s->head = (s->head + len) % s->buf_size;
393 return PL330_FIFO_OK;
396 /* Reset MFIFO. This completely erases all data in it. */
398 static inline void pl330_fifo_reset(PL330Fifo *s)
404 /* Return tag of the first byte stored in MFIFO. If MFIFO is empty
405 * PL330_UNTAGGED is returned.
408 static inline uint8_t pl330_fifo_tag(PL330Fifo *s)
410 return (!s->num) ? PL330_UNTAGGED : s->tag[s->head];
413 /* Returns non-zero if tag TAG is present in fifo or zero otherwise */
415 static int pl330_fifo_has_tag(PL330Fifo *s, uint8_t tag)
420 for (n = 0; n < s->num; n++) {
421 if (s->tag[i] == tag) {
424 i = pl330_fifo_inc(s, i);
429 /* Remove all entry tagged with TAG from MFIFO */
431 static void pl330_fifo_tagged_remove(PL330Fifo *s, uint8_t tag)
436 for (n = 0; n < s->num; n++) {
437 if (s->tag[i] != tag) {
438 s->buf[t] = s->buf[i];
439 s->tag[t] = s->tag[i];
440 t = pl330_fifo_inc(s, t);
444 i = pl330_fifo_inc(s, i);
448 /* Read-Write Queue implementation
450 * A Read-Write Queue stores up to QUEUE_SIZE instructions (loads or stores).
451 * Each instruction is described by source (for loads) or destination (for
452 * stores) address ADDR, width of data to be loaded/stored LEN, number of
453 * stores/loads to be performed N, INC bit, Z bit and TAG to identify channel
454 * this instruction belongs to. Queue does not store any information about
455 * nature of the instruction: is it load or store. PL330 has different queues
456 * for loads and stores so this is already known at the top level where it
459 * Queue works as FIFO for instructions with equivalent tags, but can issue
460 * instructions with different tags in arbitrary order. SEQN field attached to
461 * each instruction helps to achieve this. For each TAG queue contains
462 * instructions with consecutive SEQN values ranging from LO_SEQN[TAG] to
463 * HI_SEQN[TAG]-1 inclusive. SEQN is 8-bit unsigned integer, so SEQN=255 is
464 * followed by SEQN=0.
466 * Z bit indicates that zeroes should be stored. No MFIFO fetches are performed
470 static void pl330_queue_reset(PL330Queue *s)
474 for (i = 0; i < s->queue_size; i++) {
475 s->queue[i].tag = PL330_UNTAGGED;
479 /* Initialize queue */
480 static void pl330_queue_init(PL330Queue *s, int size, PL330State *parent)
483 s->queue = g_new0(PL330QueueEntry, size);
484 s->queue_size = size;
487 /* Returns pointer to an empty slot or NULL if queue is full */
488 static PL330QueueEntry *pl330_queue_find_empty(PL330Queue *s)
492 for (i = 0; i < s->queue_size; i++) {
493 if (s->queue[i].tag == PL330_UNTAGGED) {
500 /* Put instruction in queue.
503 * - non-zero - queue is full
506 static int pl330_queue_put_insn(PL330Queue *s, uint32_t addr,
507 int len, int n, bool inc, bool z, uint8_t tag)
509 PL330QueueEntry *entry = pl330_queue_find_empty(s);
520 entry->seqn = s->parent->hi_seqn[tag];
521 s->parent->hi_seqn[tag]++;
525 /* Returns a pointer to queue slot containing instruction which satisfies
526 * following conditions:
527 * - it has valid tag value (not PL330_UNTAGGED)
528 * - if enforce_seq is set it has to be issuable without violating queue
530 * - if TAG argument is not PL330_UNTAGGED this instruction has tag value
531 * equivalent to the argument TAG value.
532 * If such instruction cannot be found NULL is returned.
535 static PL330QueueEntry *pl330_queue_find_insn(PL330Queue *s, uint8_t tag,
540 for (i = 0; i < s->queue_size; i++) {
541 if (s->queue[i].tag != PL330_UNTAGGED) {
543 s->queue[i].seqn == s->parent->lo_seqn[s->queue[i].tag]) &&
544 (s->queue[i].tag == tag || tag == PL330_UNTAGGED ||
553 /* Removes instruction from queue. */
555 static inline void pl330_queue_remove_insn(PL330Queue *s, PL330QueueEntry *e)
557 s->parent->lo_seqn[e->tag]++;
558 e->tag = PL330_UNTAGGED;
561 /* Removes all instructions tagged with TAG from queue. */
563 static inline void pl330_queue_remove_tagged(PL330Queue *s, uint8_t tag)
567 for (i = 0; i < s->queue_size; i++) {
568 if (s->queue[i].tag == tag) {
569 s->queue[i].tag = PL330_UNTAGGED;
574 /* DMA instruction execution engine */
576 /* Moves DMA channel to the FAULT state and updates it's status. */
578 static inline void pl330_fault(PL330Chan *ch, uint32_t flags)
580 DB_PRINT("ch: %p, flags: %x\n", ch, flags);
581 ch->fault_type |= flags;
582 if (ch->state == pl330_chan_fault) {
585 ch->state = pl330_chan_fault;
586 ch->parent->num_faulting++;
587 if (ch->parent->num_faulting == 1) {
588 DB_PRINT("abort interrupt raised\n");
589 qemu_irq_raise(ch->parent->irq_abort);
594 * For information about instructions see PL330 Technical Reference Manual.
597 * CH - channel executing the instruction
599 * ARGS - array of 8-bit arguments
600 * LEN - number of elements in ARGS array
603 static void pl330_dmaaddh(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len)
605 uint16_t im = (((uint16_t)args[1]) << 8) | ((uint16_t)args[0]);
606 uint8_t ra = (opcode >> 1) & 1;
608 if (ch->is_manager) {
609 pl330_fault(ch, PL330_FAULT_UNDEF_INSTR);
619 static void pl330_dmaend(PL330Chan *ch, uint8_t opcode,
620 uint8_t *args, int len)
622 PL330State *s = ch->parent;
624 if (ch->state == pl330_chan_executing && !ch->is_manager) {
625 /* Wait for all transfers to complete */
626 if (pl330_fifo_has_tag(&s->fifo, ch->tag) ||
627 pl330_queue_find_insn(&s->read_queue, ch->tag, false) != NULL ||
628 pl330_queue_find_insn(&s->write_queue, ch->tag, false) != NULL) {
634 DB_PRINT("DMA ending!\n");
635 pl330_fifo_tagged_remove(&s->fifo, ch->tag);
636 pl330_queue_remove_tagged(&s->read_queue, ch->tag);
637 pl330_queue_remove_tagged(&s->write_queue, ch->tag);
638 ch->state = pl330_chan_stopped;
641 static void pl330_dmaflushp(PL330Chan *ch, uint8_t opcode,
642 uint8_t *args, int len)
647 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
650 periph_id = (args[0] >> 3) & 0x1f;
651 if (periph_id >= ch->parent->num_periph_req) {
652 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
655 if (ch->ns && !(ch->parent->cfg[CFG_PNS] & (1 << periph_id))) {
656 pl330_fault(ch, PL330_FAULT_CH_PERIPH_ERR);
662 static void pl330_dmago(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len)
671 if (!ch->is_manager) {
672 pl330_fault(ch, PL330_FAULT_UNDEF_INSTR);
676 chan_id = args[0] & 7;
677 if ((args[0] >> 3)) {
678 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
681 if (chan_id >= ch->parent->num_chnls) {
682 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
685 pc = (((uint32_t)args[4]) << 24) | (((uint32_t)args[3]) << 16) |
686 (((uint32_t)args[2]) << 8) | (((uint32_t)args[1]));
687 if (ch->parent->chan[chan_id].state != pl330_chan_stopped) {
688 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
692 pl330_fault(ch, PL330_FAULT_DMAGO_ERR);
695 s = &ch->parent->chan[chan_id];
698 s->state = pl330_chan_executing;
701 static void pl330_dmald(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len)
703 uint8_t bs = opcode & 3;
708 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
711 if ((bs == 1 && ch->request_flag == PL330_BURST) ||
712 (bs == 3 && ch->request_flag == PL330_SINGLE)) {
716 if (bs == 1 && ch->request_flag == PL330_SINGLE) {
719 num = ((ch->control >> 4) & 0xf) + 1;
721 size = (uint32_t)1 << ((ch->control >> 1) & 0x7);
722 inc = !!(ch->control & 1);
723 ch->stall = pl330_queue_put_insn(&ch->parent->read_queue, ch->src,
724 size, num, inc, 0, ch->tag);
726 DB_PRINT("channel:%d address:%08x size:%d num:%d %c\n",
727 ch->tag, ch->src, size, num, inc ? 'Y' : 'N');
728 ch->src += inc ? size * num - (ch->src & (size - 1)) : 0;
732 static void pl330_dmaldp(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len)
737 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
740 periph_id = (args[0] >> 3) & 0x1f;
741 if (periph_id >= ch->parent->num_periph_req) {
742 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
745 if (ch->ns && !(ch->parent->cfg[CFG_PNS] & (1 << periph_id))) {
746 pl330_fault(ch, PL330_FAULT_CH_PERIPH_ERR);
749 pl330_dmald(ch, opcode, args, len);
752 static void pl330_dmalp(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len)
754 uint8_t lc = (opcode & 2) >> 1;
756 ch->lc[lc] = args[0];
759 static void pl330_dmakill(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len)
761 if (ch->state == pl330_chan_fault ||
762 ch->state == pl330_chan_fault_completing) {
763 /* This is the only way for a channel to leave the faulting state */
765 ch->parent->num_faulting--;
766 if (ch->parent->num_faulting == 0) {
767 DB_PRINT("abort interrupt lowered\n");
768 qemu_irq_lower(ch->parent->irq_abort);
771 ch->state = pl330_chan_killing;
772 pl330_fifo_tagged_remove(&ch->parent->fifo, ch->tag);
773 pl330_queue_remove_tagged(&ch->parent->read_queue, ch->tag);
774 pl330_queue_remove_tagged(&ch->parent->write_queue, ch->tag);
775 ch->state = pl330_chan_stopped;
778 static void pl330_dmalpend(PL330Chan *ch, uint8_t opcode,
779 uint8_t *args, int len)
781 uint8_t nf = (opcode & 0x10) >> 4;
782 uint8_t bs = opcode & 3;
783 uint8_t lc = (opcode & 4) >> 2;
786 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
789 if ((bs == 1 && ch->request_flag == PL330_BURST) ||
790 (bs == 3 && ch->request_flag == PL330_SINGLE)) {
794 if (!nf || ch->lc[lc]) {
798 DB_PRINT("loop reiteration\n");
801 /* "ch->pc -= args[0] + len + 1" is incorrect when args[0] == 256 */
803 DB_PRINT("loop fallthrough\n");
808 static void pl330_dmamov(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len)
810 uint8_t rd = args[0] & 7;
813 if ((args[0] >> 3)) {
814 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
817 im = (((uint32_t)args[4]) << 24) | (((uint32_t)args[3]) << 16) |
818 (((uint32_t)args[2]) << 8) | (((uint32_t)args[1]));
830 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
835 static void pl330_dmanop(PL330Chan *ch, uint8_t opcode,
836 uint8_t *args, int len)
841 static void pl330_dmarmb(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len)
843 if (pl330_queue_find_insn(&ch->parent->read_queue, ch->tag, false)) {
844 ch->state = pl330_chan_at_barrier;
848 ch->state = pl330_chan_executing;
852 static void pl330_dmasev(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len)
857 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
860 ev_id = (args[0] >> 3) & 0x1f;
861 if (ev_id >= ch->parent->num_events) {
862 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
865 if (ch->ns && !(ch->parent->cfg[CFG_INS] & (1 << ev_id))) {
866 pl330_fault(ch, PL330_FAULT_EVENT_ERR);
869 if (ch->parent->inten & (1 << ev_id)) {
870 ch->parent->int_status |= (1 << ev_id);
871 DB_PRINT("event interrupt raised %d\n", ev_id);
872 qemu_irq_raise(ch->parent->irq[ev_id]);
874 ch->parent->ev_status |= (1 << ev_id);
877 static void pl330_dmast(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len)
879 uint8_t bs = opcode & 3;
884 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
887 if ((bs == 1 && ch->request_flag == PL330_BURST) ||
888 (bs == 3 && ch->request_flag == PL330_SINGLE)) {
892 num = ((ch->control >> 18) & 0xf) + 1;
893 size = (uint32_t)1 << ((ch->control >> 15) & 0x7);
894 inc = !!((ch->control >> 14) & 1);
895 ch->stall = pl330_queue_put_insn(&ch->parent->write_queue, ch->dst,
896 size, num, inc, 0, ch->tag);
898 DB_PRINT("channel:%d address:%08x size:%d num:%d %c\n",
899 ch->tag, ch->dst, size, num, inc ? 'Y' : 'N');
900 ch->dst += inc ? size * num - (ch->dst & (size - 1)) : 0;
904 static void pl330_dmastp(PL330Chan *ch, uint8_t opcode,
905 uint8_t *args, int len)
910 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
913 periph_id = (args[0] >> 3) & 0x1f;
914 if (periph_id >= ch->parent->num_periph_req) {
915 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
918 if (ch->ns && !(ch->parent->cfg[CFG_PNS] & (1 << periph_id))) {
919 pl330_fault(ch, PL330_FAULT_CH_PERIPH_ERR);
922 pl330_dmast(ch, opcode, args, len);
925 static void pl330_dmastz(PL330Chan *ch, uint8_t opcode,
926 uint8_t *args, int len)
931 num = ((ch->control >> 18) & 0xf) + 1;
932 size = (uint32_t)1 << ((ch->control >> 15) & 0x7);
933 inc = !!((ch->control >> 14) & 1);
934 ch->stall = pl330_queue_put_insn(&ch->parent->write_queue, ch->dst,
935 size, num, inc, 1, ch->tag);
937 ch->dst += size * num;
941 static void pl330_dmawfe(PL330Chan *ch, uint8_t opcode,
942 uint8_t *args, int len)
948 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
951 ev_id = (args[0] >> 3) & 0x1f;
952 if (ev_id >= ch->parent->num_events) {
953 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
956 if (ch->ns && !(ch->parent->cfg[CFG_INS] & (1 << ev_id))) {
957 pl330_fault(ch, PL330_FAULT_EVENT_ERR);
961 ch->state = pl330_chan_waiting_event;
962 if (~ch->parent->inten & ch->parent->ev_status & 1 << ev_id) {
963 ch->state = pl330_chan_executing;
964 /* If anyone else is currently waiting on the same event, let them
965 * clear the ev_status so they pick up event as well
967 for (i = 0; i < ch->parent->num_chnls; ++i) {
968 PL330Chan *peer = &ch->parent->chan[i];
969 if (peer->state == pl330_chan_waiting_event &&
970 peer->wakeup == ev_id) {
974 ch->parent->ev_status &= ~(1 << ev_id);
980 static void pl330_dmawfp(PL330Chan *ch, uint8_t opcode,
981 uint8_t *args, int len)
983 uint8_t bs = opcode & 3;
987 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
990 periph_id = (args[0] >> 3) & 0x1f;
991 if (periph_id >= ch->parent->num_periph_req) {
992 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
995 if (ch->ns && !(ch->parent->cfg[CFG_PNS] & (1 << periph_id))) {
996 pl330_fault(ch, PL330_FAULT_CH_PERIPH_ERR);
1001 ch->request_flag = PL330_SINGLE;
1005 ch->request_flag = PL330_BURST;
1009 ch->request_flag = PL330_BURST;
1013 pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
1017 if (ch->parent->periph_busy[periph_id]) {
1018 ch->state = pl330_chan_waiting_periph;
1020 } else if (ch->state == pl330_chan_waiting_periph) {
1021 ch->state = pl330_chan_executing;
1025 static void pl330_dmawmb(PL330Chan *ch, uint8_t opcode,
1026 uint8_t *args, int len)
1028 if (pl330_queue_find_insn(&ch->parent->write_queue, ch->tag, false)) {
1029 ch->state = pl330_chan_at_barrier;
1033 ch->state = pl330_chan_executing;
1037 /* NULL terminated array of the instruction descriptions. */
1038 static const PL330InsnDesc insn_desc[] = {
1039 { .opcode = 0x54, .opmask = 0xFD, .size = 3, .exec = pl330_dmaaddh, },
1040 { .opcode = 0x00, .opmask = 0xFF, .size = 1, .exec = pl330_dmaend, },
1041 { .opcode = 0x35, .opmask = 0xFF, .size = 2, .exec = pl330_dmaflushp, },
1042 { .opcode = 0xA0, .opmask = 0xFD, .size = 6, .exec = pl330_dmago, },
1043 { .opcode = 0x04, .opmask = 0xFC, .size = 1, .exec = pl330_dmald, },
1044 { .opcode = 0x25, .opmask = 0xFD, .size = 2, .exec = pl330_dmaldp, },
1045 { .opcode = 0x20, .opmask = 0xFD, .size = 2, .exec = pl330_dmalp, },
1046 /* dmastp must be before dmalpend in this list, because their maps
1049 { .opcode = 0x29, .opmask = 0xFD, .size = 2, .exec = pl330_dmastp, },
1050 { .opcode = 0x28, .opmask = 0xE8, .size = 2, .exec = pl330_dmalpend, },
1051 { .opcode = 0x01, .opmask = 0xFF, .size = 1, .exec = pl330_dmakill, },
1052 { .opcode = 0xBC, .opmask = 0xFF, .size = 6, .exec = pl330_dmamov, },
1053 { .opcode = 0x18, .opmask = 0xFF, .size = 1, .exec = pl330_dmanop, },
1054 { .opcode = 0x12, .opmask = 0xFF, .size = 1, .exec = pl330_dmarmb, },
1055 { .opcode = 0x34, .opmask = 0xFF, .size = 2, .exec = pl330_dmasev, },
1056 { .opcode = 0x08, .opmask = 0xFC, .size = 1, .exec = pl330_dmast, },
1057 { .opcode = 0x0C, .opmask = 0xFF, .size = 1, .exec = pl330_dmastz, },
1058 { .opcode = 0x36, .opmask = 0xFF, .size = 2, .exec = pl330_dmawfe, },
1059 { .opcode = 0x30, .opmask = 0xFC, .size = 2, .exec = pl330_dmawfp, },
1060 { .opcode = 0x13, .opmask = 0xFF, .size = 1, .exec = pl330_dmawmb, },
1061 { .opcode = 0x00, .opmask = 0x00, .size = 0, .exec = NULL, }
1064 /* Instructions which can be issued via debug registers. */
1065 static const PL330InsnDesc debug_insn_desc[] = {
1066 { .opcode = 0xA0, .opmask = 0xFD, .size = 6, .exec = pl330_dmago, },
1067 { .opcode = 0x01, .opmask = 0xFF, .size = 1, .exec = pl330_dmakill, },
1068 { .opcode = 0x34, .opmask = 0xFF, .size = 2, .exec = pl330_dmasev, },
1069 { .opcode = 0x00, .opmask = 0x00, .size = 0, .exec = NULL, }
1072 static inline const PL330InsnDesc *pl330_fetch_insn(PL330Chan *ch)
1077 dma_memory_read(&address_space_memory, ch->pc, &opcode, 1);
1078 for (i = 0; insn_desc[i].size; i++) {
1079 if ((opcode & insn_desc[i].opmask) == insn_desc[i].opcode) {
1080 return &insn_desc[i];
1086 static inline void pl330_exec_insn(PL330Chan *ch, const PL330InsnDesc *insn)
1088 uint8_t buf[PL330_INSN_MAXSIZE];
1090 assert(insn->size <= PL330_INSN_MAXSIZE);
1091 dma_memory_read(&address_space_memory, ch->pc, buf, insn->size);
1092 insn->exec(ch, buf[0], &buf[1], insn->size - 1);
1095 static inline void pl330_update_pc(PL330Chan *ch,
1096 const PL330InsnDesc *insn)
1098 ch->pc += insn->size;
1101 /* Try to execute current instruction in channel CH. Number of executed
1102 instructions is returned (0 or 1). */
1103 static int pl330_chan_exec(PL330Chan *ch)
1105 const PL330InsnDesc *insn;
1107 if (ch->state != pl330_chan_executing &&
1108 ch->state != pl330_chan_waiting_periph &&
1109 ch->state != pl330_chan_at_barrier &&
1110 ch->state != pl330_chan_waiting_event) {
1111 DB_PRINT("%d\n", ch->state);
1115 insn = pl330_fetch_insn(ch);
1117 DB_PRINT("pl330 undefined instruction\n");
1118 pl330_fault(ch, PL330_FAULT_UNDEF_INSTR);
1121 pl330_exec_insn(ch, insn);
1123 pl330_update_pc(ch, insn);
1124 ch->watchdog_timer = 0;
1126 /* WDT only active in exec state */
1127 } else if (ch->state == pl330_chan_executing) {
1128 ch->watchdog_timer++;
1129 if (ch->watchdog_timer >= PL330_WATCHDOG_LIMIT) {
1130 pl330_fault(ch, PL330_FAULT_LOCKUP_ERR);
1136 /* Try to execute 1 instruction in each channel, one instruction from read
1137 queue and one instruction from write queue. Number of successfully executed
1138 instructions is returned. */
1139 static int pl330_exec_cycle(PL330Chan *channel)
1141 PL330State *s = channel->parent;
1146 uint8_t buf[PL330_MAX_BURST_LEN];
1148 /* Execute one instruction in each channel */
1149 num_exec += pl330_chan_exec(channel);
1151 /* Execute one instruction from read queue */
1152 q = pl330_queue_find_insn(&s->read_queue, PL330_UNTAGGED, true);
1153 if (q != NULL && q->len <= pl330_fifo_num_free(&s->fifo)) {
1154 int len = q->len - (q->addr & (q->len - 1));
1156 dma_memory_read(&address_space_memory, q->addr, buf, len);
1157 if (PL330_ERR_DEBUG > 1) {
1158 DB_PRINT("PL330 read from memory @%08x (size = %08x):\n",
1160 qemu_hexdump((char *)buf, stderr, "", len);
1162 fifo_res = pl330_fifo_push(&s->fifo, buf, len, q->tag);
1163 if (fifo_res == PL330_FIFO_OK) {
1169 pl330_queue_remove_insn(&s->read_queue, q);
1175 /* Execute one instruction from write queue. */
1176 q = pl330_queue_find_insn(&s->write_queue, pl330_fifo_tag(&s->fifo), true);
1178 int len = q->len - (q->addr & (q->len - 1));
1181 for (i = 0; i < len; i++) {
1185 fifo_res = pl330_fifo_get(&s->fifo, buf, len, q->tag);
1187 if (fifo_res == PL330_FIFO_OK || q->z) {
1188 dma_memory_write(&address_space_memory, q->addr, buf, len);
1189 if (PL330_ERR_DEBUG > 1) {
1190 DB_PRINT("PL330 read from memory @%08x (size = %08x):\n",
1192 qemu_hexdump((char *)buf, stderr, "", len);
1198 } else if (fifo_res == PL330_FIFO_STALL) {
1199 pl330_fault(&channel->parent->chan[q->tag],
1200 PL330_FAULT_FIFOEMPTY_ERR);
1204 pl330_queue_remove_insn(&s->write_queue, q);
1211 static int pl330_exec_channel(PL330Chan *channel)
1215 /* TODO: Is it all right to execute everything or should we do per-cycle
1217 while (pl330_exec_cycle(channel)) {
1221 /* Detect deadlock */
1222 if (channel->state == pl330_chan_executing) {
1223 pl330_fault(channel, PL330_FAULT_LOCKUP_ERR);
1225 /* Situation when one of the queues has deadlocked but all channels
1226 * have finished their programs should be impossible.
1232 static inline void pl330_exec(PL330State *s)
1237 insr_exec = pl330_exec_channel(&s->manager);
1239 for (i = 0; i < s->num_chnls; i++) {
1240 insr_exec += pl330_exec_channel(&s->chan[i]);
1242 } while (insr_exec);
1245 static void pl330_exec_cycle_timer(void *opaque)
1247 PL330State *s = (PL330State *)opaque;
1251 /* Stop or restore dma operations */
1253 static void pl330_dma_stop_irq(void *opaque, int irq, int level)
1255 PL330State *s = (PL330State *)opaque;
1257 if (s->periph_busy[irq] != level) {
1258 s->periph_busy[irq] = level;
1259 qemu_mod_timer(s->timer, qemu_get_clock_ns(vm_clock));
1263 static void pl330_debug_exec(PL330State *s)
1270 const PL330InsnDesc *insn;
1272 s->debug_status = 1;
1273 chan_id = (s->dbg[0] >> 8) & 0x07;
1274 opcode = (s->dbg[0] >> 16) & 0xff;
1275 args[0] = (s->dbg[0] >> 24) & 0xff;
1276 args[1] = (s->dbg[1] >> 0) & 0xff;
1277 args[2] = (s->dbg[1] >> 8) & 0xff;
1278 args[3] = (s->dbg[1] >> 16) & 0xff;
1279 args[4] = (s->dbg[1] >> 24) & 0xff;
1280 DB_PRINT("chan id: %d\n", chan_id);
1281 if (s->dbg[0] & 1) {
1282 ch = &s->chan[chan_id];
1287 for (i = 0; debug_insn_desc[i].size; i++) {
1288 if ((opcode & debug_insn_desc[i].opmask) == debug_insn_desc[i].opcode) {
1289 insn = &debug_insn_desc[i];
1293 pl330_fault(ch, PL330_FAULT_UNDEF_INSTR | PL330_FAULT_DBG_INSTR);
1297 insn->exec(ch, opcode, args, insn->size - 1);
1298 if (ch->fault_type) {
1299 ch->fault_type |= PL330_FAULT_DBG_INSTR;
1302 qemu_log_mask(LOG_UNIMP, "pl330: stall of debug instruction not "
1305 s->debug_status = 0;
1308 /* IOMEM mapped registers */
1310 static void pl330_iomem_write(void *opaque, hwaddr offset,
1311 uint64_t value, unsigned size)
1313 PL330State *s = (PL330State *) opaque;
1316 DB_PRINT("addr: %08x data: %08x\n", (unsigned)offset, (unsigned)value);
1319 case PL330_REG_INTEN:
1322 case PL330_REG_INTCLR:
1323 for (i = 0; i < s->num_events; i++) {
1324 if (s->int_status & s->inten & value & (1 << i)) {
1325 DB_PRINT("event interrupt lowered %d\n", i);
1326 qemu_irq_lower(s->irq[i]);
1329 s->ev_status &= ~(value & s->inten);
1330 s->int_status &= ~(value & s->inten);
1332 case PL330_REG_DBGCMD:
1333 if ((value & 3) == 0) {
1334 pl330_debug_exec(s);
1337 qemu_log_mask(LOG_GUEST_ERROR, "pl330: write of illegal value %u "
1338 "for offset " TARGET_FMT_plx "\n", (unsigned)value,
1342 case PL330_REG_DBGINST0:
1343 DB_PRINT("s->dbg[0] = %08x\n", (unsigned)value);
1346 case PL330_REG_DBGINST1:
1347 DB_PRINT("s->dbg[1] = %08x\n", (unsigned)value);
1351 qemu_log_mask(LOG_GUEST_ERROR, "pl330: bad write offset " TARGET_FMT_plx
1357 static inline uint32_t pl330_iomem_read_imp(void *opaque,
1360 PL330State *s = (PL330State *)opaque;
1365 if (offset >= PL330_REG_PERIPH_ID && offset < PL330_REG_PERIPH_ID + 32) {
1366 return pl330_id[(offset - PL330_REG_PERIPH_ID) >> 2];
1368 if (offset >= PL330_REG_CR0_BASE && offset < PL330_REG_CR0_BASE + 24) {
1369 return s->cfg[(offset - PL330_REG_CR0_BASE) >> 2];
1371 if (offset >= PL330_REG_CHANCTRL && offset < PL330_REG_DBGSTATUS) {
1372 offset -= PL330_REG_CHANCTRL;
1373 chan_id = offset >> 5;
1374 if (chan_id >= s->num_chnls) {
1375 qemu_log_mask(LOG_GUEST_ERROR, "pl330: bad read offset "
1376 TARGET_FMT_plx "\n", offset);
1379 switch (offset & 0x1f) {
1381 return s->chan[chan_id].src;
1383 return s->chan[chan_id].dst;
1385 return s->chan[chan_id].control;
1387 return s->chan[chan_id].lc[0];
1389 return s->chan[chan_id].lc[1];
1391 qemu_log_mask(LOG_GUEST_ERROR, "pl330: bad read offset "
1392 TARGET_FMT_plx "\n", offset);
1396 if (offset >= PL330_REG_CSR_BASE && offset < 0x400) {
1397 offset -= PL330_REG_CSR_BASE;
1398 chan_id = offset >> 3;
1399 if (chan_id >= s->num_chnls) {
1400 qemu_log_mask(LOG_GUEST_ERROR, "pl330: bad read offset "
1401 TARGET_FMT_plx "\n", offset);
1404 switch ((offset >> 2) & 1) {
1406 res = (s->chan[chan_id].ns << 21) |
1407 (s->chan[chan_id].wakeup << 4) |
1408 (s->chan[chan_id].state) |
1409 (s->chan[chan_id].wfp_sbp << 14);
1412 return s->chan[chan_id].pc;
1414 qemu_log_mask(LOG_GUEST_ERROR, "pl330: read error\n");
1418 if (offset >= PL330_REG_FTR_BASE && offset < 0x100) {
1419 offset -= PL330_REG_FTR_BASE;
1420 chan_id = offset >> 2;
1421 if (chan_id >= s->num_chnls) {
1422 qemu_log_mask(LOG_GUEST_ERROR, "pl330: bad read offset "
1423 TARGET_FMT_plx "\n", offset);
1426 return s->chan[chan_id].fault_type;
1430 return (s->manager.ns << 9) | (s->manager.wakeup << 4) |
1431 (s->manager.state & 0xf);
1433 return s->manager.pc;
1434 case PL330_REG_INTEN:
1436 case PL330_REG_INT_EVENT_RIS:
1437 return s->ev_status;
1438 case PL330_REG_INTMIS:
1439 return s->int_status;
1440 case PL330_REG_INTCLR:
1441 /* Documentation says that we can't read this register
1442 * but linux kernel does it
1445 case PL330_REG_FSRD:
1446 return s->manager.state ? 1 : 0;
1447 case PL330_REG_FSRC:
1449 for (i = 0; i < s->num_chnls; i++) {
1450 if (s->chan[i].state == pl330_chan_fault ||
1451 s->chan[i].state == pl330_chan_fault_completing) {
1456 case PL330_REG_FTRD:
1457 return s->manager.fault_type;
1458 case PL330_REG_DBGSTATUS:
1459 return s->debug_status;
1461 qemu_log_mask(LOG_GUEST_ERROR, "pl330: bad read offset "
1462 TARGET_FMT_plx "\n", offset);
1467 static uint64_t pl330_iomem_read(void *opaque, hwaddr offset,
1470 int ret = pl330_iomem_read_imp(opaque, offset);
1471 DB_PRINT("addr: %08x data: %08x\n", (unsigned)offset, ret);
1475 static const MemoryRegionOps pl330_ops = {
1476 .read = pl330_iomem_read,
1477 .write = pl330_iomem_write,
1478 .endianness = DEVICE_NATIVE_ENDIAN,
1480 .min_access_size = 4,
1481 .max_access_size = 4,
1485 /* Controller logic and initialization */
1487 static void pl330_chan_reset(PL330Chan *ch)
1492 ch->state = pl330_chan_stopped;
1493 ch->watchdog_timer = 0;
1500 static void pl330_reset(DeviceState *d)
1503 PL330State *s = PL330(d);
1508 s->debug_status = 0;
1509 s->num_faulting = 0;
1510 s->manager.ns = s->mgr_ns_at_rst;
1511 pl330_fifo_reset(&s->fifo);
1512 pl330_queue_reset(&s->read_queue);
1513 pl330_queue_reset(&s->write_queue);
1515 for (i = 0; i < s->num_chnls; i++) {
1516 pl330_chan_reset(&s->chan[i]);
1518 for (i = 0; i < s->num_periph_req; i++) {
1519 s->periph_busy[i] = 0;
1522 qemu_del_timer(s->timer);
1525 static void pl330_realize(DeviceState *dev, Error **errp)
1528 PL330State *s = PL330(dev);
1530 sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->irq_abort);
1531 memory_region_init_io(&s->iomem, &pl330_ops, s, "dma", PL330_IOMEM_SIZE);
1532 sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->iomem);
1534 s->timer = qemu_new_timer_ns(vm_clock, pl330_exec_cycle_timer, s);
1536 s->cfg[0] = (s->mgr_ns_at_rst ? 0x4 : 0) |
1537 (s->num_periph_req > 0 ? 1 : 0) |
1538 ((s->num_chnls - 1) & 0x7) << 4 |
1539 ((s->num_periph_req - 1) & 0x1f) << 12 |
1540 ((s->num_events - 1) & 0x1f) << 17;
1542 switch (s->i_cache_len) {
1556 error_setg(errp, "Bad value for i-cache_len property: %d\n",
1560 s->cfg[1] |= ((s->num_i_cache_lines - 1) & 0xf) << 4;
1562 s->chan = g_new0(PL330Chan, s->num_chnls);
1563 s->hi_seqn = g_new0(uint8_t, s->num_chnls);
1564 s->lo_seqn = g_new0(uint8_t, s->num_chnls);
1565 for (i = 0; i < s->num_chnls; i++) {
1566 s->chan[i].parent = s;
1567 s->chan[i].tag = (uint8_t)i;
1569 s->manager.parent = s;
1570 s->manager.tag = s->num_chnls;
1571 s->manager.is_manager = true;
1573 s->irq = g_new0(qemu_irq, s->num_events);
1574 for (i = 0; i < s->num_events; i++) {
1575 sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->irq[i]);
1578 qdev_init_gpio_in(dev, pl330_dma_stop_irq, PL330_PERIPH_NUM);
1580 switch (s->data_width) {
1582 s->cfg[CFG_CRD] |= 0x2;
1585 s->cfg[CFG_CRD] |= 0x3;
1588 s->cfg[CFG_CRD] |= 0x4;
1591 error_setg(errp, "Bad value for data_width property: %d\n",
1596 s->cfg[CFG_CRD] |= ((s->wr_cap - 1) & 0x7) << 4 |
1597 ((s->wr_q_dep - 1) & 0xf) << 8 |
1598 ((s->rd_cap - 1) & 0x7) << 12 |
1599 ((s->rd_q_dep - 1) & 0xf) << 16 |
1600 ((s->data_buffer_dep - 1) & 0x1ff) << 20;
1602 pl330_queue_init(&s->read_queue, s->rd_q_dep, s);
1603 pl330_queue_init(&s->write_queue, s->wr_q_dep, s);
1604 pl330_fifo_init(&s->fifo, s->data_buffer_dep);
1607 static Property pl330_properties[] = {
1609 DEFINE_PROP_UINT32("num_chnls", PL330State, num_chnls, 8),
1610 DEFINE_PROP_UINT8("num_periph_req", PL330State, num_periph_req, 4),
1611 DEFINE_PROP_UINT8("num_events", PL330State, num_events, 16),
1612 DEFINE_PROP_UINT8("mgr_ns_at_rst", PL330State, mgr_ns_at_rst, 0),
1614 DEFINE_PROP_UINT8("i-cache_len", PL330State, i_cache_len, 4),
1615 DEFINE_PROP_UINT8("num_i-cache_lines", PL330State, num_i_cache_lines, 8),
1617 DEFINE_PROP_UINT32("boot_addr", PL330State, cfg[CFG_BOOT_ADDR], 0),
1618 DEFINE_PROP_UINT32("INS", PL330State, cfg[CFG_INS], 0),
1619 DEFINE_PROP_UINT32("PNS", PL330State, cfg[CFG_PNS], 0),
1621 DEFINE_PROP_UINT8("data_width", PL330State, data_width, 64),
1622 DEFINE_PROP_UINT8("wr_cap", PL330State, wr_cap, 8),
1623 DEFINE_PROP_UINT8("wr_q_dep", PL330State, wr_q_dep, 16),
1624 DEFINE_PROP_UINT8("rd_cap", PL330State, rd_cap, 8),
1625 DEFINE_PROP_UINT8("rd_q_dep", PL330State, rd_q_dep, 16),
1626 DEFINE_PROP_UINT16("data_buffer_dep", PL330State, data_buffer_dep, 256),
1628 DEFINE_PROP_END_OF_LIST(),
1631 static void pl330_class_init(ObjectClass *klass, void *data)
1633 DeviceClass *dc = DEVICE_CLASS(klass);
1635 dc->realize = pl330_realize;
1636 dc->reset = pl330_reset;
1637 dc->props = pl330_properties;
1638 dc->vmsd = &vmstate_pl330;
1641 static const TypeInfo pl330_type_info = {
1643 .parent = TYPE_SYS_BUS_DEVICE,
1644 .instance_size = sizeof(PL330State),
1645 .class_init = pl330_class_init,
1648 static void pl330_register_types(void)
1650 type_register_static(&pl330_type_info);
1653 type_init(pl330_register_types)