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
25 #include "qemu/osdep.h"
27 #include "hw/ppc/mac.h"
28 #include "hw/ppc/mac_dbdma.h"
29 #include "sysemu/block-backend.h"
30 #include "sysemu/dma.h"
32 #include "hw/ide/internal.h"
35 // #define DEBUG_MACIO
38 static const int debug_macio = 1;
40 static const int debug_macio = 0;
43 #define MACIO_DPRINTF(fmt, ...) do { \
45 printf(fmt , ## __VA_ARGS__); \
50 /***********************************************************/
51 /* MacIO based PowerPC IDE */
53 #define MACIO_PAGE_SIZE 4096
55 static void pmac_ide_atapi_transfer_cb(void *opaque, int ret)
57 DBDMA_io *io = opaque;
58 MACIOIDEState *m = io->opaque;
59 IDEState *s = idebus_active_if(&m->bus);
62 MACIO_DPRINTF("pmac_ide_atapi_transfer_cb\n");
65 MACIO_DPRINTF("DMA error: %d\n", ret);
66 qemu_sglist_destroy(&s->sg);
67 ide_atapi_io_error(s, ret);
72 MACIO_DPRINTF("waiting for data (%#x - %#x - %x)\n",
73 s->nsector, io->len, s->status);
74 /* data not ready yet, wait for the channel to get restarted */
75 io->processing = false;
79 if (s->io_buffer_size <= 0) {
80 MACIO_DPRINTF("End of IDE transfer\n");
81 qemu_sglist_destroy(&s->sg);
83 m->dma_active = false;
88 MACIO_DPRINTF("End of DMA transfer\n");
93 /* Non-block ATAPI transfer - just copy to RAM */
94 s->io_buffer_size = MIN(s->io_buffer_size, io->len);
95 dma_memory_write(&address_space_memory, io->addr, s->io_buffer,
99 m->dma_active = false;
103 /* Calculate current offset */
104 offset = ((int64_t)s->lba << 11) + s->io_buffer_index;
106 qemu_sglist_init(&s->sg, DEVICE(m), io->len / MACIO_PAGE_SIZE + 1,
107 &address_space_memory);
108 qemu_sglist_add(&s->sg, io->addr, io->len);
109 s->io_buffer_size -= io->len;
110 s->io_buffer_index += io->len;
113 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset, 0x1,
114 pmac_ide_atapi_transfer_cb, io);
118 dma_memory_unmap(&address_space_memory, io->dma_mem, io->dma_len,
119 io->dir, io->dma_len);
122 block_acct_failed(blk_get_stats(s->blk), &s->acct);
124 block_acct_done(blk_get_stats(s->blk), &s->acct);
127 ide_set_inactive(s, false);
131 static void pmac_ide_transfer_cb(void *opaque, int ret)
133 DBDMA_io *io = opaque;
134 MACIOIDEState *m = io->opaque;
135 IDEState *s = idebus_active_if(&m->bus);
138 MACIO_DPRINTF("pmac_ide_transfer_cb\n");
141 MACIO_DPRINTF("DMA error: %d\n", ret);
142 qemu_sglist_destroy(&s->sg);
147 if (!m->dma_active) {
148 MACIO_DPRINTF("waiting for data (%#x - %#x - %x)\n",
149 s->nsector, io->len, s->status);
150 /* data not ready yet, wait for the channel to get restarted */
151 io->processing = false;
155 if (s->io_buffer_size <= 0) {
156 MACIO_DPRINTF("End of IDE transfer\n");
157 qemu_sglist_destroy(&s->sg);
158 s->status = READY_STAT | SEEK_STAT;
160 m->dma_active = false;
165 MACIO_DPRINTF("End of DMA transfer\n");
169 /* Calculate number of sectors */
170 offset = (ide_get_sector(s) << 9) + s->io_buffer_index;
172 qemu_sglist_init(&s->sg, DEVICE(m), io->len / MACIO_PAGE_SIZE + 1,
173 &address_space_memory);
174 qemu_sglist_add(&s->sg, io->addr, io->len);
175 s->io_buffer_size -= io->len;
176 s->io_buffer_index += io->len;
179 switch (s->dma_cmd) {
181 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset, 0x1,
182 pmac_ide_atapi_transfer_cb, io);
185 s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, offset, 0x1,
186 pmac_ide_transfer_cb, io);
189 s->bus->dma->aiocb = dma_blk_io(blk_get_aio_context(s->blk), &s->sg,
190 offset, 0x1, ide_issue_trim, s,
191 pmac_ide_transfer_cb, io,
192 DMA_DIRECTION_TO_DEVICE);
201 dma_memory_unmap(&address_space_memory, io->dma_mem, io->dma_len,
202 io->dir, io->dma_len);
204 if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
206 block_acct_failed(blk_get_stats(s->blk), &s->acct);
208 block_acct_done(blk_get_stats(s->blk), &s->acct);
212 ide_set_inactive(s, false);
216 static void pmac_ide_transfer(DBDMA_io *io)
218 MACIOIDEState *m = io->opaque;
219 IDEState *s = idebus_active_if(&m->bus);
223 if (s->drive_kind == IDE_CD) {
224 block_acct_start(blk_get_stats(s->blk), &s->acct, io->len,
227 pmac_ide_atapi_transfer_cb(io, 0);
231 switch (s->dma_cmd) {
233 block_acct_start(blk_get_stats(s->blk), &s->acct, io->len,
237 block_acct_start(blk_get_stats(s->blk), &s->acct, io->len,
244 pmac_ide_transfer_cb(io, 0);
247 static void pmac_ide_flush(DBDMA_io *io)
249 MACIOIDEState *m = io->opaque;
250 IDEState *s = idebus_active_if(&m->bus);
252 if (s->bus->dma->aiocb) {
257 /* PowerMac IDE memory IO */
258 static uint64_t pmac_ide_read(void *opaque, hwaddr addr, unsigned size)
260 MACIOIDEState *d = opaque;
261 uint64_t retval = 0xffffffff;
267 retval = ide_data_readw(&d->bus, 0);
268 } else if (size == 4) {
269 retval = ide_data_readl(&d->bus, 0);
274 retval = ide_ioport_read(&d->bus, reg);
280 retval = ide_status_read(&d->bus, 0);
285 retval = d->timing_reg;
289 /* This is an interrupt state register that only exists
290 * in the KeyLargo and later variants. Bit 0x8000_0000
291 * latches the DMA interrupt and has to be written to
292 * clear. Bit 0x4000_0000 is an image of the disk
293 * interrupt. MacOS X relies on this and will hang if
294 * we don't provide at least the disk interrupt
306 static void pmac_ide_write(void *opaque, hwaddr addr, uint64_t val,
309 MACIOIDEState *d = opaque;
315 ide_data_writew(&d->bus, 0, val);
316 } else if (size == 4) {
317 ide_data_writel(&d->bus, 0, val);
322 ide_ioport_write(&d->bus, reg, val);
328 ide_cmd_write(&d->bus, 0, val);
338 if (val & 0x80000000u) {
339 d->irq_reg &= 0x7fffffff;
346 static const MemoryRegionOps pmac_ide_ops = {
347 .read = pmac_ide_read,
348 .write = pmac_ide_write,
349 .valid.min_access_size = 1,
350 .valid.max_access_size = 4,
351 .endianness = DEVICE_LITTLE_ENDIAN,
354 static const VMStateDescription vmstate_pmac = {
357 .minimum_version_id = 0,
358 .fields = (VMStateField[]) {
359 VMSTATE_IDE_BUS(bus, MACIOIDEState),
360 VMSTATE_IDE_DRIVES(bus.ifs, MACIOIDEState),
361 VMSTATE_BOOL(dma_active, MACIOIDEState),
362 VMSTATE_UINT32(timing_reg, MACIOIDEState),
363 VMSTATE_UINT32(irq_reg, MACIOIDEState),
364 VMSTATE_END_OF_LIST()
368 static void macio_ide_reset(DeviceState *dev)
370 MACIOIDEState *d = MACIO_IDE(dev);
372 ide_bus_reset(&d->bus);
375 static int ide_nop_int(IDEDMA *dma, int x)
380 static int32_t ide_nop_int32(IDEDMA *dma, int32_t l)
385 static void ide_dbdma_start(IDEDMA *dma, IDEState *s,
386 BlockCompletionFunc *cb)
388 MACIOIDEState *m = container_of(dma, MACIOIDEState, dma);
390 s->io_buffer_index = 0;
391 if (s->drive_kind == IDE_CD) {
392 s->io_buffer_size = s->packet_transfer_size;
394 s->io_buffer_size = s->nsector * BDRV_SECTOR_SIZE;
397 MACIO_DPRINTF("\n\n------------ IDE transfer\n");
398 MACIO_DPRINTF("buffer_size: %x buffer_index: %x\n",
399 s->io_buffer_size, s->io_buffer_index);
400 MACIO_DPRINTF("lba: %x size: %x\n", s->lba, s->io_buffer_size);
401 MACIO_DPRINTF("-------------------------\n");
403 m->dma_active = true;
404 DBDMA_kick(m->dbdma);
407 static const IDEDMAOps dbdma_ops = {
408 .start_dma = ide_dbdma_start,
409 .prepare_buf = ide_nop_int32,
410 .rw_buf = ide_nop_int,
413 static void macio_ide_realizefn(DeviceState *dev, Error **errp)
415 MACIOIDEState *s = MACIO_IDE(dev);
417 ide_init2(&s->bus, s->ide_irq);
419 /* Register DMA callbacks */
420 s->dma.ops = &dbdma_ops;
421 s->bus.dma = &s->dma;
424 static void pmac_ide_irq(void *opaque, int n, int level)
426 MACIOIDEState *s = opaque;
427 uint32_t mask = 0x80000000u >> n;
429 /* We need to reflect the IRQ state in the irq register */
437 qemu_set_irq(s->real_ide_irq, level);
439 qemu_set_irq(s->real_dma_irq, level);
443 static void macio_ide_initfn(Object *obj)
445 SysBusDevice *d = SYS_BUS_DEVICE(obj);
446 MACIOIDEState *s = MACIO_IDE(obj);
448 ide_bus_new(&s->bus, sizeof(s->bus), DEVICE(obj), 0, 2);
449 memory_region_init_io(&s->mem, obj, &pmac_ide_ops, s, "pmac-ide", 0x1000);
450 sysbus_init_mmio(d, &s->mem);
451 sysbus_init_irq(d, &s->real_ide_irq);
452 sysbus_init_irq(d, &s->real_dma_irq);
453 s->dma_irq = qemu_allocate_irq(pmac_ide_irq, s, 0);
454 s->ide_irq = qemu_allocate_irq(pmac_ide_irq, s, 1);
456 object_property_add_link(obj, "dbdma", TYPE_MAC_DBDMA,
457 (Object **) &s->dbdma,
458 qdev_prop_allow_set_link_before_realize, 0, NULL);
461 static Property macio_ide_properties[] = {
462 DEFINE_PROP_UINT32("channel", MACIOIDEState, channel, 0),
463 DEFINE_PROP_END_OF_LIST(),
466 static void macio_ide_class_init(ObjectClass *oc, void *data)
468 DeviceClass *dc = DEVICE_CLASS(oc);
470 dc->realize = macio_ide_realizefn;
471 dc->reset = macio_ide_reset;
472 dc->props = macio_ide_properties;
473 dc->vmsd = &vmstate_pmac;
474 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
477 static const TypeInfo macio_ide_type_info = {
478 .name = TYPE_MACIO_IDE,
479 .parent = TYPE_SYS_BUS_DEVICE,
480 .instance_size = sizeof(MACIOIDEState),
481 .instance_init = macio_ide_initfn,
482 .class_init = macio_ide_class_init,
485 static void macio_ide_register_types(void)
487 type_register_static(&macio_ide_type_info);
490 /* hd_table must contain 2 block drivers */
491 void macio_ide_init_drives(MACIOIDEState *s, DriveInfo **hd_table)
495 for (i = 0; i < 2; i++) {
497 ide_create_drive(&s->bus, i, hd_table[i]);
502 void macio_ide_register_dma(MACIOIDEState *s)
504 DBDMA_register_channel(s->dbdma, s->channel, s->dma_irq,
505 pmac_ide_transfer, pmac_ide_flush, s);
508 type_init(macio_ide_register_types)