2 * QEMU IDE Emulation: MacIO support.
4 * Copyright (c) 2003 Fabrice Bellard
5 * Copyright (c) 2006 Openedhand Ltd.
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #include "qemu/osdep.h"
28 #include "hw/ppc/mac.h"
29 #include "hw/ppc/mac_dbdma.h"
30 #include "qemu/module.h"
31 #include "hw/misc/macio/macio.h"
32 #include "sysemu/block-backend.h"
33 #include "sysemu/dma.h"
35 #include "hw/ide/internal.h"
38 // #define DEBUG_MACIO
41 static const int debug_macio = 1;
43 static const int debug_macio = 0;
46 #define MACIO_DPRINTF(fmt, ...) do { \
48 printf(fmt , ## __VA_ARGS__); \
53 /***********************************************************/
54 /* MacIO based PowerPC IDE */
56 #define MACIO_PAGE_SIZE 4096
58 static void pmac_ide_atapi_transfer_cb(void *opaque, int ret)
60 DBDMA_io *io = opaque;
61 MACIOIDEState *m = io->opaque;
62 IDEState *s = idebus_active_if(&m->bus);
65 MACIO_DPRINTF("pmac_ide_atapi_transfer_cb\n");
68 MACIO_DPRINTF("DMA error: %d\n", ret);
69 qemu_sglist_destroy(&s->sg);
70 ide_atapi_io_error(s, ret);
75 MACIO_DPRINTF("waiting for data (%#x - %#x - %x)\n",
76 s->nsector, io->len, s->status);
77 /* data not ready yet, wait for the channel to get restarted */
78 io->processing = false;
82 if (s->io_buffer_size <= 0) {
83 MACIO_DPRINTF("End of IDE transfer\n");
84 qemu_sglist_destroy(&s->sg);
86 m->dma_active = false;
91 MACIO_DPRINTF("End of DMA transfer\n");
96 /* Non-block ATAPI transfer - just copy to RAM */
97 s->io_buffer_size = MIN(s->io_buffer_size, io->len);
98 dma_memory_write(&address_space_memory, io->addr, s->io_buffer,
102 m->dma_active = false;
106 /* Calculate current offset */
107 offset = ((int64_t)s->lba << 11) + s->io_buffer_index;
109 qemu_sglist_init(&s->sg, DEVICE(m), io->len / MACIO_PAGE_SIZE + 1,
110 &address_space_memory);
111 qemu_sglist_add(&s->sg, io->addr, io->len);
112 s->io_buffer_size -= io->len;
113 s->io_buffer_index += io->len;
116 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset, 0x1,
117 pmac_ide_atapi_transfer_cb, io);
121 dma_memory_unmap(&address_space_memory, io->dma_mem, io->dma_len,
122 io->dir, io->dma_len);
125 block_acct_failed(blk_get_stats(s->blk), &s->acct);
127 block_acct_done(blk_get_stats(s->blk), &s->acct);
130 ide_set_inactive(s, false);
134 static void pmac_ide_transfer_cb(void *opaque, int ret)
136 DBDMA_io *io = opaque;
137 MACIOIDEState *m = io->opaque;
138 IDEState *s = idebus_active_if(&m->bus);
141 MACIO_DPRINTF("pmac_ide_transfer_cb\n");
144 MACIO_DPRINTF("DMA error: %d\n", ret);
145 qemu_sglist_destroy(&s->sg);
150 if (!m->dma_active) {
151 MACIO_DPRINTF("waiting for data (%#x - %#x - %x)\n",
152 s->nsector, io->len, s->status);
153 /* data not ready yet, wait for the channel to get restarted */
154 io->processing = false;
158 if (s->io_buffer_size <= 0) {
159 MACIO_DPRINTF("End of IDE transfer\n");
160 qemu_sglist_destroy(&s->sg);
161 s->status = READY_STAT | SEEK_STAT;
163 m->dma_active = false;
168 MACIO_DPRINTF("End of DMA transfer\n");
172 /* Calculate number of sectors */
173 offset = (ide_get_sector(s) << 9) + s->io_buffer_index;
175 qemu_sglist_init(&s->sg, DEVICE(m), io->len / MACIO_PAGE_SIZE + 1,
176 &address_space_memory);
177 qemu_sglist_add(&s->sg, io->addr, io->len);
178 s->io_buffer_size -= io->len;
179 s->io_buffer_index += io->len;
182 switch (s->dma_cmd) {
184 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset, 0x1,
185 pmac_ide_atapi_transfer_cb, io);
188 s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, offset, 0x1,
189 pmac_ide_transfer_cb, io);
192 s->bus->dma->aiocb = dma_blk_io(blk_get_aio_context(s->blk), &s->sg,
193 offset, 0x1, ide_issue_trim, s,
194 pmac_ide_transfer_cb, io,
195 DMA_DIRECTION_TO_DEVICE);
204 dma_memory_unmap(&address_space_memory, io->dma_mem, io->dma_len,
205 io->dir, io->dma_len);
207 if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
209 block_acct_failed(blk_get_stats(s->blk), &s->acct);
211 block_acct_done(blk_get_stats(s->blk), &s->acct);
215 ide_set_inactive(s, false);
219 static void pmac_ide_transfer(DBDMA_io *io)
221 MACIOIDEState *m = io->opaque;
222 IDEState *s = idebus_active_if(&m->bus);
226 if (s->drive_kind == IDE_CD) {
227 block_acct_start(blk_get_stats(s->blk), &s->acct, io->len,
230 pmac_ide_atapi_transfer_cb(io, 0);
234 switch (s->dma_cmd) {
236 block_acct_start(blk_get_stats(s->blk), &s->acct, io->len,
240 block_acct_start(blk_get_stats(s->blk), &s->acct, io->len,
247 pmac_ide_transfer_cb(io, 0);
250 static void pmac_ide_flush(DBDMA_io *io)
252 MACIOIDEState *m = io->opaque;
253 IDEState *s = idebus_active_if(&m->bus);
255 if (s->bus->dma->aiocb) {
260 /* PowerMac IDE memory IO */
261 static uint64_t pmac_ide_read(void *opaque, hwaddr addr, unsigned size)
263 MACIOIDEState *d = opaque;
264 uint64_t retval = 0xffffffff;
270 retval = ide_data_readw(&d->bus, 0);
271 } else if (size == 4) {
272 retval = ide_data_readl(&d->bus, 0);
277 retval = ide_ioport_read(&d->bus, reg);
283 retval = ide_status_read(&d->bus, 0);
288 retval = d->timing_reg;
292 /* This is an interrupt state register that only exists
293 * in the KeyLargo and later variants. Bit 0x8000_0000
294 * latches the DMA interrupt and has to be written to
295 * clear. Bit 0x4000_0000 is an image of the disk
296 * interrupt. MacOS X relies on this and will hang if
297 * we don't provide at least the disk interrupt
309 static void pmac_ide_write(void *opaque, hwaddr addr, uint64_t val,
312 MACIOIDEState *d = opaque;
318 ide_data_writew(&d->bus, 0, val);
319 } else if (size == 4) {
320 ide_data_writel(&d->bus, 0, val);
325 ide_ioport_write(&d->bus, reg, val);
331 ide_cmd_write(&d->bus, 0, val);
341 if (val & 0x80000000u) {
342 d->irq_reg &= 0x7fffffff;
349 static const MemoryRegionOps pmac_ide_ops = {
350 .read = pmac_ide_read,
351 .write = pmac_ide_write,
352 .valid.min_access_size = 1,
353 .valid.max_access_size = 4,
354 .endianness = DEVICE_LITTLE_ENDIAN,
357 static const VMStateDescription vmstate_pmac = {
360 .minimum_version_id = 0,
361 .fields = (VMStateField[]) {
362 VMSTATE_IDE_BUS(bus, MACIOIDEState),
363 VMSTATE_IDE_DRIVES(bus.ifs, MACIOIDEState),
364 VMSTATE_BOOL(dma_active, MACIOIDEState),
365 VMSTATE_UINT32(timing_reg, MACIOIDEState),
366 VMSTATE_UINT32(irq_reg, MACIOIDEState),
367 VMSTATE_END_OF_LIST()
371 static void macio_ide_reset(DeviceState *dev)
373 MACIOIDEState *d = MACIO_IDE(dev);
375 ide_bus_reset(&d->bus);
378 static int ide_nop_int(IDEDMA *dma, int x)
383 static int32_t ide_nop_int32(IDEDMA *dma, int32_t l)
388 static void ide_dbdma_start(IDEDMA *dma, IDEState *s,
389 BlockCompletionFunc *cb)
391 MACIOIDEState *m = container_of(dma, MACIOIDEState, dma);
393 s->io_buffer_index = 0;
394 if (s->drive_kind == IDE_CD) {
395 s->io_buffer_size = s->packet_transfer_size;
397 s->io_buffer_size = s->nsector * BDRV_SECTOR_SIZE;
400 MACIO_DPRINTF("\n\n------------ IDE transfer\n");
401 MACIO_DPRINTF("buffer_size: %x buffer_index: %x\n",
402 s->io_buffer_size, s->io_buffer_index);
403 MACIO_DPRINTF("lba: %x size: %x\n", s->lba, s->io_buffer_size);
404 MACIO_DPRINTF("-------------------------\n");
406 m->dma_active = true;
407 DBDMA_kick(m->dbdma);
410 static const IDEDMAOps dbdma_ops = {
411 .start_dma = ide_dbdma_start,
412 .prepare_buf = ide_nop_int32,
413 .rw_buf = ide_nop_int,
416 static void macio_ide_realizefn(DeviceState *dev, Error **errp)
418 MACIOIDEState *s = MACIO_IDE(dev);
420 ide_init2(&s->bus, s->ide_irq);
422 /* Register DMA callbacks */
423 s->dma.ops = &dbdma_ops;
424 s->bus.dma = &s->dma;
427 static void pmac_ide_irq(void *opaque, int n, int level)
429 MACIOIDEState *s = opaque;
430 uint32_t mask = 0x80000000u >> n;
432 /* We need to reflect the IRQ state in the irq register */
440 qemu_set_irq(s->real_ide_irq, level);
442 qemu_set_irq(s->real_dma_irq, level);
446 static void macio_ide_initfn(Object *obj)
448 SysBusDevice *d = SYS_BUS_DEVICE(obj);
449 MACIOIDEState *s = MACIO_IDE(obj);
451 ide_bus_new(&s->bus, sizeof(s->bus), DEVICE(obj), 0, 2);
452 memory_region_init_io(&s->mem, obj, &pmac_ide_ops, s, "pmac-ide", 0x1000);
453 sysbus_init_mmio(d, &s->mem);
454 sysbus_init_irq(d, &s->real_ide_irq);
455 sysbus_init_irq(d, &s->real_dma_irq);
456 s->dma_irq = qemu_allocate_irq(pmac_ide_irq, s, 0);
457 s->ide_irq = qemu_allocate_irq(pmac_ide_irq, s, 1);
459 object_property_add_link(obj, "dbdma", TYPE_MAC_DBDMA,
460 (Object **) &s->dbdma,
461 qdev_prop_allow_set_link_before_realize, 0, NULL);
464 static Property macio_ide_properties[] = {
465 DEFINE_PROP_UINT32("channel", MACIOIDEState, channel, 0),
466 DEFINE_PROP_UINT32("addr", MACIOIDEState, addr, -1),
467 DEFINE_PROP_END_OF_LIST(),
470 static void macio_ide_class_init(ObjectClass *oc, void *data)
472 DeviceClass *dc = DEVICE_CLASS(oc);
474 dc->realize = macio_ide_realizefn;
475 dc->reset = macio_ide_reset;
476 dc->props = macio_ide_properties;
477 dc->vmsd = &vmstate_pmac;
478 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
481 static const TypeInfo macio_ide_type_info = {
482 .name = TYPE_MACIO_IDE,
483 .parent = TYPE_SYS_BUS_DEVICE,
484 .instance_size = sizeof(MACIOIDEState),
485 .instance_init = macio_ide_initfn,
486 .class_init = macio_ide_class_init,
489 static void macio_ide_register_types(void)
491 type_register_static(&macio_ide_type_info);
494 /* hd_table must contain 2 block drivers */
495 void macio_ide_init_drives(MACIOIDEState *s, DriveInfo **hd_table)
499 for (i = 0; i < 2; i++) {
501 ide_create_drive(&s->bus, i, hd_table[i]);
506 void macio_ide_register_dma(MACIOIDEState *s)
508 DBDMA_register_channel(s->dbdma, s->channel, s->dma_irq,
509 pmac_ide_transfer, pmac_ide_flush, s);
512 type_init(macio_ide_register_types)