2 * QEMU ETRAX DMA Controller.
4 * Copyright (c) 2008 Edgar E. Iglesias, Axis Communications AB.
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
27 #include "qemu-common.h"
30 #include "etraxfs_dma.h"
35 #define RW_SAVED_DATA 0x58
36 #define RW_SAVED_DATA_BUF 0x5c
38 #define RW_GROUP_DOWN 0x7c
42 #define RW_INTR_MASK 0x8c
43 #define RW_ACK_INTR 0x90
45 #define R_MASKED_INTR 0x98
46 #define RW_STREAM_CMD 0x9c
48 #define DMA_REG_MAX 0x100
52 // ------------------------------------------------------------ dma_descr_group
53 typedef struct dma_descr_group
{
54 struct dma_descr_group
*next
;
65 struct dma_descr_group
*up
;
67 struct dma_descr_context
*context
;
68 struct dma_descr_group
*group
;
72 // ---------------------------------------------------------- dma_descr_context
73 typedef struct dma_descr_context
{
74 struct dma_descr_context
*next
;
79 unsigned store_mode
: 1;
88 struct dma_descr_data
*saved_data
;
92 // ------------------------------------------------------------- dma_descr_data
93 typedef struct dma_descr_data
{
94 struct dma_descr_data
*next
;
111 regk_dma_ack_pkt
= 0x00000100,
112 regk_dma_anytime
= 0x00000001,
113 regk_dma_array
= 0x00000008,
114 regk_dma_burst
= 0x00000020,
115 regk_dma_client
= 0x00000002,
116 regk_dma_copy_next
= 0x00000010,
117 regk_dma_copy_up
= 0x00000020,
118 regk_dma_data_at_eol
= 0x00000001,
119 regk_dma_dis_c
= 0x00000010,
120 regk_dma_dis_g
= 0x00000020,
121 regk_dma_idle
= 0x00000001,
122 regk_dma_intern
= 0x00000004,
123 regk_dma_load_c
= 0x00000200,
124 regk_dma_load_c_n
= 0x00000280,
125 regk_dma_load_c_next
= 0x00000240,
126 regk_dma_load_d
= 0x00000140,
127 regk_dma_load_g
= 0x00000300,
128 regk_dma_load_g_down
= 0x000003c0,
129 regk_dma_load_g_next
= 0x00000340,
130 regk_dma_load_g_up
= 0x00000380,
131 regk_dma_next_en
= 0x00000010,
132 regk_dma_next_pkt
= 0x00000010,
133 regk_dma_no
= 0x00000000,
134 regk_dma_only_at_wait
= 0x00000000,
135 regk_dma_restore
= 0x00000020,
136 regk_dma_rst
= 0x00000001,
137 regk_dma_running
= 0x00000004,
138 regk_dma_rw_cfg_default
= 0x00000000,
139 regk_dma_rw_cmd_default
= 0x00000000,
140 regk_dma_rw_intr_mask_default
= 0x00000000,
141 regk_dma_rw_stat_default
= 0x00000101,
142 regk_dma_rw_stream_cmd_default
= 0x00000000,
143 regk_dma_save_down
= 0x00000020,
144 regk_dma_save_up
= 0x00000020,
145 regk_dma_set_reg
= 0x00000050,
146 regk_dma_set_w_size1
= 0x00000190,
147 regk_dma_set_w_size2
= 0x000001a0,
148 regk_dma_set_w_size4
= 0x000001c0,
149 regk_dma_stopped
= 0x00000002,
150 regk_dma_store_c
= 0x00000002,
151 regk_dma_store_descr
= 0x00000000,
152 regk_dma_store_g
= 0x00000004,
153 regk_dma_store_md
= 0x00000001,
154 regk_dma_sw
= 0x00000008,
155 regk_dma_update_down
= 0x00000020,
156 regk_dma_yes
= 0x00000001
166 struct fs_dma_channel
170 struct etraxfs_dma_client
*client
;
173 /* Internal status. */
175 enum dma_ch_state state
;
177 unsigned int input
: 1;
178 unsigned int eol
: 1;
180 struct dma_descr_group current_g
;
181 struct dma_descr_context current_c
;
182 struct dma_descr_data current_d
;
184 /* Controll registers. */
185 uint32_t regs
[DMA_REG_MAX
];
191 target_phys_addr_t base
;
194 struct fs_dma_channel
*channels
;
199 static inline uint32_t channel_reg(struct fs_dma_ctrl
*ctrl
, int c
, int reg
)
201 return ctrl
->channels
[c
].regs
[reg
];
204 static inline int channel_stopped(struct fs_dma_ctrl
*ctrl
, int c
)
206 return channel_reg(ctrl
, c
, RW_CFG
) & 2;
209 static inline int channel_en(struct fs_dma_ctrl
*ctrl
, int c
)
211 return (channel_reg(ctrl
, c
, RW_CFG
) & 1)
212 && ctrl
->channels
[c
].client
;
215 static inline int fs_channel(target_phys_addr_t base
, target_phys_addr_t addr
)
217 /* Every channel has a 0x2000 ctrl register map. */
218 return (addr
- base
) >> 13;
221 #ifdef USE_THIS_DEAD_CODE
222 static void channel_load_g(struct fs_dma_ctrl
*ctrl
, int c
)
224 target_phys_addr_t addr
= channel_reg(ctrl
, c
, RW_GROUP
);
226 /* Load and decode. FIXME: handle endianness. */
227 cpu_physical_memory_read (addr
,
228 (void *) &ctrl
->channels
[c
].current_g
,
229 sizeof ctrl
->channels
[c
].current_g
);
232 static void dump_c(int ch
, struct dma_descr_context
*c
)
234 printf("%s ch=%d\n", __func__
, ch
);
235 printf("next=%p\n", c
->next
);
236 printf("saved_data=%p\n", c
->saved_data
);
237 printf("saved_data_buf=%p\n", c
->saved_data_buf
);
238 printf("eol=%x\n", (uint32_t) c
->eol
);
241 static void dump_d(int ch
, struct dma_descr_data
*d
)
243 printf("%s ch=%d\n", __func__
, ch
);
244 printf("next=%p\n", d
->next
);
245 printf("buf=%p\n", d
->buf
);
246 printf("after=%p\n", d
->after
);
247 printf("intr=%x\n", (uint32_t) d
->intr
);
248 printf("out_eop=%x\n", (uint32_t) d
->out_eop
);
249 printf("in_eop=%x\n", (uint32_t) d
->in_eop
);
250 printf("eol=%x\n", (uint32_t) d
->eol
);
254 static void channel_load_c(struct fs_dma_ctrl
*ctrl
, int c
)
256 target_phys_addr_t addr
= channel_reg(ctrl
, c
, RW_GROUP_DOWN
);
258 /* Load and decode. FIXME: handle endianness. */
259 cpu_physical_memory_read (addr
,
260 (void *) &ctrl
->channels
[c
].current_c
,
261 sizeof ctrl
->channels
[c
].current_c
);
263 D(dump_c(c
, &ctrl
->channels
[c
].current_c
));
264 /* I guess this should update the current pos. */
265 ctrl
->channels
[c
].regs
[RW_SAVED_DATA
] =
266 (uint32_t)(unsigned long)ctrl
->channels
[c
].current_c
.saved_data
;
267 ctrl
->channels
[c
].regs
[RW_SAVED_DATA_BUF
] =
268 (uint32_t)(unsigned long)ctrl
->channels
[c
].current_c
.saved_data_buf
;
271 static void channel_load_d(struct fs_dma_ctrl
*ctrl
, int c
)
273 target_phys_addr_t addr
= channel_reg(ctrl
, c
, RW_SAVED_DATA
);
275 /* Load and decode. FIXME: handle endianness. */
276 D(printf("%s ch=%d addr=%x\n", __func__
, c
, addr
));
277 cpu_physical_memory_read (addr
,
278 (void *) &ctrl
->channels
[c
].current_d
,
279 sizeof ctrl
->channels
[c
].current_d
);
281 D(dump_d(c
, &ctrl
->channels
[c
].current_d
));
282 ctrl
->channels
[c
].regs
[RW_DATA
] = addr
;
285 static void channel_store_c(struct fs_dma_ctrl
*ctrl
, int c
)
287 target_phys_addr_t addr
= channel_reg(ctrl
, c
, RW_GROUP_DOWN
);
289 /* Encode and store. FIXME: handle endianness. */
290 D(printf("%s ch=%d addr=%x\n", __func__
, c
, addr
));
291 D(dump_d(c
, &ctrl
->channels
[c
].current_d
));
292 cpu_physical_memory_write (addr
,
293 (void *) &ctrl
->channels
[c
].current_c
,
294 sizeof ctrl
->channels
[c
].current_c
);
297 static void channel_store_d(struct fs_dma_ctrl
*ctrl
, int c
)
299 target_phys_addr_t addr
= channel_reg(ctrl
, c
, RW_SAVED_DATA
);
301 /* Encode and store. FIXME: handle endianness. */
302 D(printf("%s ch=%d addr=%x\n", __func__
, c
, addr
));
303 cpu_physical_memory_write (addr
,
304 (void *) &ctrl
->channels
[c
].current_d
,
305 sizeof ctrl
->channels
[c
].current_d
);
308 static inline void channel_stop(struct fs_dma_ctrl
*ctrl
, int c
)
313 static inline void channel_start(struct fs_dma_ctrl
*ctrl
, int c
)
315 if (ctrl
->channels
[c
].client
)
317 ctrl
->channels
[c
].eol
= 0;
318 ctrl
->channels
[c
].state
= RUNNING
;
320 printf("WARNING: starting DMA ch %d with no client\n", c
);
322 qemu_bh_schedule_idle(ctrl
->bh
);
325 static void channel_continue(struct fs_dma_ctrl
*ctrl
, int c
)
327 if (!channel_en(ctrl
, c
)
328 || channel_stopped(ctrl
, c
)
329 || ctrl
->channels
[c
].state
!= RUNNING
330 /* Only reload the current data descriptor if it has eol set. */
331 || !ctrl
->channels
[c
].current_d
.eol
) {
332 D(printf("continue failed ch=%d state=%d stopped=%d en=%d eol=%d\n",
333 c
, ctrl
->channels
[c
].state
,
334 channel_stopped(ctrl
, c
),
336 ctrl
->channels
[c
].eol
));
337 D(dump_d(c
, &ctrl
->channels
[c
].current_d
));
341 /* Reload the current descriptor. */
342 channel_load_d(ctrl
, c
);
344 /* If the current descriptor cleared the eol flag and we had already
345 reached eol state, do the continue. */
346 if (!ctrl
->channels
[c
].current_d
.eol
&& ctrl
->channels
[c
].eol
) {
347 D(printf("continue %d ok %p\n", c
,
348 ctrl
->channels
[c
].current_d
.next
));
349 ctrl
->channels
[c
].regs
[RW_SAVED_DATA
] =
350 (uint32_t)(unsigned long)ctrl
->channels
[c
].current_d
.next
;
351 channel_load_d(ctrl
, c
);
352 channel_start(ctrl
, c
);
354 ctrl
->channels
[c
].regs
[RW_SAVED_DATA_BUF
] =
355 (uint32_t)(unsigned long)ctrl
->channels
[c
].current_d
.buf
;
358 static void channel_stream_cmd(struct fs_dma_ctrl
*ctrl
, int c
, uint32_t v
)
360 unsigned int cmd
= v
& ((1 << 10) - 1);
362 D(printf("%s ch=%d cmd=%x\n",
364 if (cmd
& regk_dma_load_d
) {
365 channel_load_d(ctrl
, c
);
366 if (cmd
& regk_dma_burst
)
367 channel_start(ctrl
, c
);
370 if (cmd
& regk_dma_load_c
) {
371 channel_load_c(ctrl
, c
);
372 channel_start(ctrl
, c
);
376 static void channel_update_irq(struct fs_dma_ctrl
*ctrl
, int c
)
378 D(printf("%s %d\n", __func__
, c
));
379 ctrl
->channels
[c
].regs
[R_INTR
] &=
380 ~(ctrl
->channels
[c
].regs
[RW_ACK_INTR
]);
382 ctrl
->channels
[c
].regs
[R_MASKED_INTR
] =
383 ctrl
->channels
[c
].regs
[R_INTR
]
384 & ctrl
->channels
[c
].regs
[RW_INTR_MASK
];
386 D(printf("%s: chan=%d masked_intr=%x\n", __func__
,
388 ctrl
->channels
[c
].regs
[R_MASKED_INTR
]));
390 if (ctrl
->channels
[c
].regs
[R_MASKED_INTR
])
391 qemu_irq_raise(ctrl
->channels
[c
].irq
[0]);
393 qemu_irq_lower(ctrl
->channels
[c
].irq
[0]);
396 static int channel_out_run(struct fs_dma_ctrl
*ctrl
, int c
)
399 uint32_t saved_data_buf
;
400 unsigned char buf
[2 * 1024];
402 if (ctrl
->channels
[c
].eol
)
406 saved_data_buf
= channel_reg(ctrl
, c
, RW_SAVED_DATA_BUF
);
408 D(printf("ch=%d buf=%x after=%x saved_data_buf=%x\n",
410 (uint32_t)ctrl
->channels
[c
].current_d
.buf
,
411 (uint32_t)ctrl
->channels
[c
].current_d
.after
,
414 len
= (uint32_t)(unsigned long)
415 ctrl
->channels
[c
].current_d
.after
;
416 len
-= saved_data_buf
;
418 if (len
> sizeof buf
)
420 cpu_physical_memory_read (saved_data_buf
, buf
, len
);
422 D(printf("channel %d pushes %x %u bytes\n", c
,
423 saved_data_buf
, len
));
425 if (ctrl
->channels
[c
].client
->client
.push
)
426 ctrl
->channels
[c
].client
->client
.push(
427 ctrl
->channels
[c
].client
->client
.opaque
,
430 printf("WARNING: DMA ch%d dataloss,"
431 " no attached client.\n", c
);
433 saved_data_buf
+= len
;
435 if (saved_data_buf
== (uint32_t)(unsigned long)
436 ctrl
->channels
[c
].current_d
.after
) {
437 /* Done. Step to next. */
438 if (ctrl
->channels
[c
].current_d
.out_eop
) {
439 /* TODO: signal eop to the client. */
440 D(printf("signal eop\n"));
442 if (ctrl
->channels
[c
].current_d
.intr
) {
443 /* TODO: signal eop to the client. */
445 D(printf("signal intr\n"));
446 ctrl
->channels
[c
].regs
[R_INTR
] |= (1 << 2);
447 channel_update_irq(ctrl
, c
);
449 if (ctrl
->channels
[c
].current_d
.eol
) {
450 D(printf("channel %d EOL\n", c
));
451 ctrl
->channels
[c
].eol
= 1;
453 /* Mark the context as disabled. */
454 ctrl
->channels
[c
].current_c
.dis
= 1;
455 channel_store_c(ctrl
, c
);
457 channel_stop(ctrl
, c
);
459 ctrl
->channels
[c
].regs
[RW_SAVED_DATA
] =
460 (uint32_t)(unsigned long)ctrl
->
461 channels
[c
].current_d
.next
;
462 /* Load new descriptor. */
463 channel_load_d(ctrl
, c
);
464 saved_data_buf
= (uint32_t)(unsigned long)
465 ctrl
->channels
[c
].current_d
.buf
;
468 channel_store_d(ctrl
, c
);
469 ctrl
->channels
[c
].regs
[RW_SAVED_DATA_BUF
] =
471 D(dump_d(c
, &ctrl
->channels
[c
].current_d
));
473 ctrl
->channels
[c
].regs
[RW_SAVED_DATA_BUF
] = saved_data_buf
;
474 } while (!ctrl
->channels
[c
].eol
);
478 static int channel_in_process(struct fs_dma_ctrl
*ctrl
, int c
,
479 unsigned char *buf
, int buflen
, int eop
)
482 uint32_t saved_data_buf
;
484 if (ctrl
->channels
[c
].eol
== 1)
487 saved_data_buf
= channel_reg(ctrl
, c
, RW_SAVED_DATA_BUF
);
488 len
= (uint32_t)(unsigned long)ctrl
->channels
[c
].current_d
.after
;
489 len
-= saved_data_buf
;
494 cpu_physical_memory_write (saved_data_buf
, buf
, len
);
495 saved_data_buf
+= len
;
497 if (saved_data_buf
==
498 (uint32_t)(unsigned long)ctrl
->channels
[c
].current_d
.after
500 uint32_t r_intr
= ctrl
->channels
[c
].regs
[R_INTR
];
502 D(printf("in dscr end len=%d\n",
503 ctrl
->channels
[c
].current_d
.after
504 - ctrl
->channels
[c
].current_d
.buf
));
505 ctrl
->channels
[c
].current_d
.after
=
506 (void *)(unsigned long) saved_data_buf
;
508 /* Done. Step to next. */
509 if (ctrl
->channels
[c
].current_d
.intr
) {
510 /* TODO: signal eop to the client. */
512 ctrl
->channels
[c
].regs
[R_INTR
] |= 3;
515 ctrl
->channels
[c
].current_d
.in_eop
= 1;
516 ctrl
->channels
[c
].regs
[R_INTR
] |= 8;
518 if (r_intr
!= ctrl
->channels
[c
].regs
[R_INTR
])
519 channel_update_irq(ctrl
, c
);
521 channel_store_d(ctrl
, c
);
522 D(dump_d(c
, &ctrl
->channels
[c
].current_d
));
524 if (ctrl
->channels
[c
].current_d
.eol
) {
525 D(printf("channel %d EOL\n", c
));
526 ctrl
->channels
[c
].eol
= 1;
528 /* Mark the context as disabled. */
529 ctrl
->channels
[c
].current_c
.dis
= 1;
530 channel_store_c(ctrl
, c
);
532 channel_stop(ctrl
, c
);
534 ctrl
->channels
[c
].regs
[RW_SAVED_DATA
] =
535 (uint32_t)(unsigned long)ctrl
->
536 channels
[c
].current_d
.next
;
537 /* Load new descriptor. */
538 channel_load_d(ctrl
, c
);
539 saved_data_buf
= (uint32_t)(unsigned long)
540 ctrl
->channels
[c
].current_d
.buf
;
544 ctrl
->channels
[c
].regs
[RW_SAVED_DATA_BUF
] = saved_data_buf
;
548 static inline int channel_in_run(struct fs_dma_ctrl
*ctrl
, int c
)
550 if (ctrl
->channels
[c
].client
->client
.pull
) {
551 ctrl
->channels
[c
].client
->client
.pull(
552 ctrl
->channels
[c
].client
->client
.opaque
);
558 static uint32_t dma_rinvalid (void *opaque
, target_phys_addr_t addr
)
560 struct fs_dma_ctrl
*ctrl
= opaque
;
561 CPUState
*env
= ctrl
->env
;
562 cpu_abort(env
, "Unsupported short access. reg=" TARGET_FMT_plx
"\n",
568 dma_readl (void *opaque
, target_phys_addr_t addr
)
570 struct fs_dma_ctrl
*ctrl
= opaque
;
574 /* Make addr relative to this instances base. */
575 c
= fs_channel(ctrl
->base
, addr
);
580 r
= ctrl
->channels
[c
].state
& 7;
581 r
|= ctrl
->channels
[c
].eol
<< 5;
582 r
|= ctrl
->channels
[c
].stream_cmd_src
<< 8;
586 r
= ctrl
->channels
[c
].regs
[addr
];
587 D(printf ("%s c=%d addr=%x\n",
595 dma_winvalid (void *opaque
, target_phys_addr_t addr
, uint32_t value
)
597 struct fs_dma_ctrl
*ctrl
= opaque
;
598 CPUState
*env
= ctrl
->env
;
599 cpu_abort(env
, "Unsupported short access. reg=" TARGET_FMT_plx
"\n",
604 dma_update_state(struct fs_dma_ctrl
*ctrl
, int c
)
606 if ((ctrl
->channels
[c
].regs
[RW_CFG
] & 1) != 3) {
607 if (ctrl
->channels
[c
].regs
[RW_CFG
] & 2)
608 ctrl
->channels
[c
].state
= STOPPED
;
609 if (!(ctrl
->channels
[c
].regs
[RW_CFG
] & 1))
610 ctrl
->channels
[c
].state
= RST
;
615 dma_writel (void *opaque
, target_phys_addr_t addr
, uint32_t value
)
617 struct fs_dma_ctrl
*ctrl
= opaque
;
620 /* Make addr relative to this instances base. */
621 c
= fs_channel(ctrl
->base
, addr
);
626 ctrl
->channels
[c
].regs
[addr
] = value
;
630 ctrl
->channels
[c
].regs
[addr
] = value
;
631 dma_update_state(ctrl
, c
);
636 printf("Invalid store to ch=%d RW_CMD %x\n",
638 ctrl
->channels
[c
].regs
[addr
] = value
;
639 channel_continue(ctrl
, c
);
643 case RW_SAVED_DATA_BUF
:
646 ctrl
->channels
[c
].regs
[addr
] = value
;
651 ctrl
->channels
[c
].regs
[addr
] = value
;
652 channel_update_irq(ctrl
, c
);
653 if (addr
== RW_ACK_INTR
)
654 ctrl
->channels
[c
].regs
[RW_ACK_INTR
] = 0;
659 printf("Invalid store to ch=%d "
662 ctrl
->channels
[c
].regs
[addr
] = value
;
663 D(printf("stream_cmd ch=%d\n", c
));
664 channel_stream_cmd(ctrl
, c
, value
);
668 D(printf ("%s c=%d %x %x\n", __func__
, c
, addr
));
673 static CPUReadMemoryFunc
*dma_read
[] = {
679 static CPUWriteMemoryFunc
*dma_write
[] = {
685 static int etraxfs_dmac_run(void *opaque
)
687 struct fs_dma_ctrl
*ctrl
= opaque
;
692 i
< ctrl
->nr_channels
;
695 if (ctrl
->channels
[i
].state
== RUNNING
)
697 if (ctrl
->channels
[i
].input
) {
698 p
+= channel_in_run(ctrl
, i
);
700 p
+= channel_out_run(ctrl
, i
);
707 int etraxfs_dmac_input(struct etraxfs_dma_client
*client
,
708 void *buf
, int len
, int eop
)
710 return channel_in_process(client
->ctrl
, client
->channel
,
714 /* Connect an IRQ line with a channel. */
715 void etraxfs_dmac_connect(void *opaque
, int c
, qemu_irq
*line
, int input
)
717 struct fs_dma_ctrl
*ctrl
= opaque
;
718 ctrl
->channels
[c
].irq
= line
;
719 ctrl
->channels
[c
].input
= input
;
722 void etraxfs_dmac_connect_client(void *opaque
, int c
,
723 struct etraxfs_dma_client
*cl
)
725 struct fs_dma_ctrl
*ctrl
= opaque
;
728 ctrl
->channels
[c
].client
= cl
;
732 static void DMA_run(void *opaque
)
734 struct fs_dma_ctrl
*etraxfs_dmac
= opaque
;
738 p
= etraxfs_dmac_run(etraxfs_dmac
);
741 qemu_bh_schedule_idle(etraxfs_dmac
->bh
);
744 void *etraxfs_dmac_init(CPUState
*env
,
745 target_phys_addr_t base
, int nr_channels
)
747 struct fs_dma_ctrl
*ctrl
= NULL
;
750 ctrl
= qemu_mallocz(sizeof *ctrl
);
754 ctrl
->bh
= qemu_bh_new(DMA_run
, ctrl
);
758 ctrl
->nr_channels
= nr_channels
;
759 ctrl
->channels
= qemu_mallocz(sizeof ctrl
->channels
[0] * nr_channels
);
763 for (i
= 0; i
< nr_channels
; i
++)
765 ctrl
->channels
[i
].regmap
= cpu_register_io_memory(0,
769 cpu_register_physical_memory (base
+ i
* 0x2000,
770 sizeof ctrl
->channels
[i
].regs
,
771 ctrl
->channels
[i
].regmap
);
776 qemu_free(ctrl
->channels
);