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"
27 #include "hw/ppc/mac.h"
28 #include "hw/ppc/mac_dbdma.h"
29 #include "hw/qdev-properties.h"
30 #include "migration/vmstate.h"
31 #include "qemu/module.h"
32 #include "hw/misc/macio/macio.h"
33 #include "sysemu/block-backend.h"
34 #include "sysemu/dma.h"
36 #include "hw/ide/internal.h"
39 // #define DEBUG_MACIO
42 static const int debug_macio = 1;
44 static const int debug_macio = 0;
47 #define MACIO_DPRINTF(fmt, ...) do { \
49 printf(fmt , ## __VA_ARGS__); \
54 /***********************************************************/
55 /* MacIO based PowerPC IDE */
57 #define MACIO_PAGE_SIZE 4096
59 static void pmac_ide_atapi_transfer_cb(void *opaque, int ret)
61 DBDMA_io *io = opaque;
62 MACIOIDEState *m = io->opaque;
63 IDEState *s = idebus_active_if(&m->bus);
66 MACIO_DPRINTF("pmac_ide_atapi_transfer_cb\n");
69 MACIO_DPRINTF("DMA error: %d\n", ret);
70 qemu_sglist_destroy(&s->sg);
71 ide_atapi_io_error(s, ret);
76 MACIO_DPRINTF("waiting for data (%#x - %#x - %x)\n",
77 s->nsector, io->len, s->status);
78 /* data not ready yet, wait for the channel to get restarted */
79 io->processing = false;
83 if (s->io_buffer_size <= 0) {
84 MACIO_DPRINTF("End of IDE transfer\n");
85 qemu_sglist_destroy(&s->sg);
87 m->dma_active = false;
92 MACIO_DPRINTF("End of DMA transfer\n");
97 /* Non-block ATAPI transfer - just copy to RAM */
98 s->io_buffer_size = MIN(s->io_buffer_size, io->len);
99 dma_memory_write(&address_space_memory, io->addr, s->io_buffer,
103 m->dma_active = false;
107 /* Calculate current offset */
108 offset = ((int64_t)s->lba << 11) + s->io_buffer_index;
110 qemu_sglist_init(&s->sg, DEVICE(m), io->len / MACIO_PAGE_SIZE + 1,
111 &address_space_memory);
112 qemu_sglist_add(&s->sg, io->addr, io->len);
113 s->io_buffer_size -= io->len;
114 s->io_buffer_index += io->len;
117 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset, 0x1,
118 pmac_ide_atapi_transfer_cb, io);
122 dma_memory_unmap(&address_space_memory, io->dma_mem, io->dma_len,
123 io->dir, io->dma_len);
126 block_acct_failed(blk_get_stats(s->blk), &s->acct);
128 block_acct_done(blk_get_stats(s->blk), &s->acct);
131 ide_set_inactive(s, false);
135 static void pmac_ide_transfer_cb(void *opaque, int ret)
137 DBDMA_io *io = opaque;
138 MACIOIDEState *m = io->opaque;
139 IDEState *s = idebus_active_if(&m->bus);
142 MACIO_DPRINTF("pmac_ide_transfer_cb\n");
145 MACIO_DPRINTF("DMA error: %d\n", ret);
146 qemu_sglist_destroy(&s->sg);
151 if (!m->dma_active) {
152 MACIO_DPRINTF("waiting for data (%#x - %#x - %x)\n",
153 s->nsector, io->len, s->status);
154 /* data not ready yet, wait for the channel to get restarted */
155 io->processing = false;
159 if (s->io_buffer_size <= 0) {
160 MACIO_DPRINTF("End of IDE transfer\n");
161 qemu_sglist_destroy(&s->sg);
162 s->status = READY_STAT | SEEK_STAT;
164 m->dma_active = false;
169 MACIO_DPRINTF("End of DMA transfer\n");
173 /* Calculate number of sectors */
174 offset = (ide_get_sector(s) << 9) + s->io_buffer_index;
176 qemu_sglist_init(&s->sg, DEVICE(m), io->len / MACIO_PAGE_SIZE + 1,
177 &address_space_memory);
178 qemu_sglist_add(&s->sg, io->addr, io->len);
179 s->io_buffer_size -= io->len;
180 s->io_buffer_index += io->len;
183 switch (s->dma_cmd) {
185 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset, 0x1,
186 pmac_ide_atapi_transfer_cb, io);
189 s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, offset, 0x1,
190 pmac_ide_transfer_cb, io);
193 s->bus->dma->aiocb = dma_blk_io(blk_get_aio_context(s->blk), &s->sg,
194 offset, 0x1, ide_issue_trim, s,
195 pmac_ide_transfer_cb, io,
196 DMA_DIRECTION_TO_DEVICE);
205 dma_memory_unmap(&address_space_memory, io->dma_mem, io->dma_len,
206 io->dir, io->dma_len);
208 if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
210 block_acct_failed(blk_get_stats(s->blk), &s->acct);
212 block_acct_done(blk_get_stats(s->blk), &s->acct);
216 ide_set_inactive(s, false);
220 static void pmac_ide_transfer(DBDMA_io *io)
222 MACIOIDEState *m = io->opaque;
223 IDEState *s = idebus_active_if(&m->bus);
227 if (s->drive_kind == IDE_CD) {
228 block_acct_start(blk_get_stats(s->blk), &s->acct, io->len,
231 pmac_ide_atapi_transfer_cb(io, 0);
235 switch (s->dma_cmd) {
237 block_acct_start(blk_get_stats(s->blk), &s->acct, io->len,
241 block_acct_start(blk_get_stats(s->blk), &s->acct, io->len,
248 pmac_ide_transfer_cb(io, 0);
251 static void pmac_ide_flush(DBDMA_io *io)
253 MACIOIDEState *m = io->opaque;
254 IDEState *s = idebus_active_if(&m->bus);
256 if (s->bus->dma->aiocb) {
261 /* PowerMac IDE memory IO */
262 static uint64_t pmac_ide_read(void *opaque, hwaddr addr, unsigned size)
264 MACIOIDEState *d = opaque;
265 uint64_t retval = 0xffffffff;
271 retval = ide_data_readw(&d->bus, 0);
272 } else if (size == 4) {
273 retval = ide_data_readl(&d->bus, 0);
278 retval = ide_ioport_read(&d->bus, reg);
284 retval = ide_status_read(&d->bus, 0);
289 retval = d->timing_reg;
293 /* This is an interrupt state register that only exists
294 * in the KeyLargo and later variants. Bit 0x8000_0000
295 * latches the DMA interrupt and has to be written to
296 * clear. Bit 0x4000_0000 is an image of the disk
297 * interrupt. MacOS X relies on this and will hang if
298 * we don't provide at least the disk interrupt
310 static void pmac_ide_write(void *opaque, hwaddr addr, uint64_t val,
313 MACIOIDEState *d = opaque;
319 ide_data_writew(&d->bus, 0, val);
320 } else if (size == 4) {
321 ide_data_writel(&d->bus, 0, val);
326 ide_ioport_write(&d->bus, reg, val);
332 ide_ctrl_write(&d->bus, 0, val);
342 if (val & 0x80000000u) {
343 d->irq_reg &= 0x7fffffff;
350 static const MemoryRegionOps pmac_ide_ops = {
351 .read = pmac_ide_read,
352 .write = pmac_ide_write,
353 .valid.min_access_size = 1,
354 .valid.max_access_size = 4,
355 .endianness = DEVICE_LITTLE_ENDIAN,
358 static const VMStateDescription vmstate_pmac = {
361 .minimum_version_id = 0,
362 .fields = (VMStateField[]) {
363 VMSTATE_IDE_BUS(bus, MACIOIDEState),
364 VMSTATE_IDE_DRIVES(bus.ifs, MACIOIDEState),
365 VMSTATE_BOOL(dma_active, MACIOIDEState),
366 VMSTATE_UINT32(timing_reg, MACIOIDEState),
367 VMSTATE_UINT32(irq_reg, MACIOIDEState),
368 VMSTATE_END_OF_LIST()
372 static void macio_ide_reset(DeviceState *dev)
374 MACIOIDEState *d = MACIO_IDE(dev);
376 ide_bus_reset(&d->bus);
379 static int ide_nop_int(const IDEDMA *dma, bool is_write)
384 static int32_t ide_nop_int32(const IDEDMA *dma, int32_t l)
389 static void ide_dbdma_start(const IDEDMA *dma, IDEState *s,
390 BlockCompletionFunc *cb)
392 MACIOIDEState *m = container_of(dma, MACIOIDEState, dma);
394 s->io_buffer_index = 0;
395 if (s->drive_kind == IDE_CD) {
396 s->io_buffer_size = s->packet_transfer_size;
398 s->io_buffer_size = s->nsector * BDRV_SECTOR_SIZE;
401 MACIO_DPRINTF("\n\n------------ IDE transfer\n");
402 MACIO_DPRINTF("buffer_size: %x buffer_index: %x\n",
403 s->io_buffer_size, s->io_buffer_index);
404 MACIO_DPRINTF("lba: %x size: %x\n", s->lba, s->io_buffer_size);
405 MACIO_DPRINTF("-------------------------\n");
407 m->dma_active = true;
408 DBDMA_kick(m->dbdma);
411 static const IDEDMAOps dbdma_ops = {
412 .start_dma = ide_dbdma_start,
413 .prepare_buf = ide_nop_int32,
414 .rw_buf = ide_nop_int,
417 static void macio_ide_realizefn(DeviceState *dev, Error **errp)
419 MACIOIDEState *s = MACIO_IDE(dev);
421 ide_init2(&s->bus, s->ide_irq);
423 /* Register DMA callbacks */
424 s->dma.ops = &dbdma_ops;
425 s->bus.dma = &s->dma;
428 static void pmac_ide_irq(void *opaque, int n, int level)
430 MACIOIDEState *s = opaque;
431 uint32_t mask = 0x80000000u >> n;
433 /* We need to reflect the IRQ state in the irq register */
441 qemu_set_irq(s->real_ide_irq, level);
443 qemu_set_irq(s->real_dma_irq, level);
447 static void macio_ide_initfn(Object *obj)
449 SysBusDevice *d = SYS_BUS_DEVICE(obj);
450 MACIOIDEState *s = MACIO_IDE(obj);
452 ide_bus_new(&s->bus, sizeof(s->bus), DEVICE(obj), 0, 2);
453 memory_region_init_io(&s->mem, obj, &pmac_ide_ops, s, "pmac-ide", 0x1000);
454 sysbus_init_mmio(d, &s->mem);
455 sysbus_init_irq(d, &s->real_ide_irq);
456 sysbus_init_irq(d, &s->real_dma_irq);
457 s->dma_irq = qemu_allocate_irq(pmac_ide_irq, s, 0);
458 s->ide_irq = qemu_allocate_irq(pmac_ide_irq, s, 1);
460 object_property_add_link(obj, "dbdma", TYPE_MAC_DBDMA,
461 (Object **) &s->dbdma,
462 qdev_prop_allow_set_link_before_realize, 0);
465 static Property macio_ide_properties[] = {
466 DEFINE_PROP_UINT32("channel", MACIOIDEState, channel, 0),
467 DEFINE_PROP_UINT32("addr", MACIOIDEState, addr, -1),
468 DEFINE_PROP_END_OF_LIST(),
471 static void macio_ide_class_init(ObjectClass *oc, void *data)
473 DeviceClass *dc = DEVICE_CLASS(oc);
475 dc->realize = macio_ide_realizefn;
476 dc->reset = macio_ide_reset;
477 device_class_set_props(dc, macio_ide_properties);
478 dc->vmsd = &vmstate_pmac;
479 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
482 static const TypeInfo macio_ide_type_info = {
483 .name = TYPE_MACIO_IDE,
484 .parent = TYPE_SYS_BUS_DEVICE,
485 .instance_size = sizeof(MACIOIDEState),
486 .instance_init = macio_ide_initfn,
487 .class_init = macio_ide_class_init,
490 static void macio_ide_register_types(void)
492 type_register_static(&macio_ide_type_info);
495 /* hd_table must contain 2 block drivers */
496 void macio_ide_init_drives(MACIOIDEState *s, DriveInfo **hd_table)
500 for (i = 0; i < 2; i++) {
502 ide_create_drive(&s->bus, i, hd_table[i]);
507 void macio_ide_register_dma(MACIOIDEState *s)
509 DBDMA_register_channel(s->dbdma, s->channel, s->dma_irq,
510 pmac_ide_transfer, pmac_ide_flush, s);
513 type_init(macio_ide_register_types)