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xemu/hw/ide/macio.c
Mark Cave-Ayland c2a0125a83 macio: add missing registers to VMStateDescription 
Commit 4f7265f "ppc/ide/macio: Add missing registers" added two extra macio
registers but forgot to add them to the corresponding VMStateDescription.

The version number is bumped accordingly, although this will have little
effect given that the Mac machines are practically unmigratable.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: John Snow <jsnow@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2017-10-17 10:34:00 +11:00

509 lines
14 KiB
C
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/*
* QEMU IDE Emulation: MacIO support.
*
* Copyright (c) 2003 Fabrice Bellard
* Copyright (c) 2006 Openedhand Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "hw/hw.h"
#include "hw/ppc/mac.h"
#include "hw/ppc/mac_dbdma.h"
#include "sysemu/block-backend.h"
#include "sysemu/dma.h"
#include "hw/ide/internal.h"
/* debug MACIO */
// #define DEBUG_MACIO
#ifdef DEBUG_MACIO
static const int debug_macio = 1;
#else
static const int debug_macio = 0;
#endif
#define MACIO_DPRINTF(fmt, ...) do { \
if (debug_macio) { \
printf(fmt , ## __VA_ARGS__); \
} \
} while (0)
/***********************************************************/
/* MacIO based PowerPC IDE */
#define MACIO_PAGE_SIZE 4096
static void pmac_ide_atapi_transfer_cb(void *opaque, int ret)
{
DBDMA_io *io = opaque;
MACIOIDEState *m = io->opaque;
IDEState *s = idebus_active_if(&m->bus);
int64_t offset;
MACIO_DPRINTF("pmac_ide_atapi_transfer_cb\n");
if (ret < 0) {
MACIO_DPRINTF("DMA error: %d\n", ret);
qemu_sglist_destroy(&s->sg);
ide_atapi_io_error(s, ret);
goto done;
}
if (!m->dma_active) {
MACIO_DPRINTF("waiting for data (%#x - %#x - %x)\n",
s->nsector, io->len, s->status);
/* data not ready yet, wait for the channel to get restarted */
io->processing = false;
return;
}
if (s->io_buffer_size <= 0) {
MACIO_DPRINTF("End of IDE transfer\n");
qemu_sglist_destroy(&s->sg);
ide_atapi_cmd_ok(s);
m->dma_active = false;
goto done;
}
if (io->len == 0) {
MACIO_DPRINTF("End of DMA transfer\n");
goto done;
}
if (s->lba == -1) {
/* Non-block ATAPI transfer - just copy to RAM */
s->io_buffer_size = MIN(s->io_buffer_size, io->len);
dma_memory_write(&address_space_memory, io->addr, s->io_buffer,
s->io_buffer_size);
io->len = 0;
ide_atapi_cmd_ok(s);
m->dma_active = false;
goto done;
}
/* Calculate current offset */
offset = ((int64_t)s->lba << 11) + s->io_buffer_index;
qemu_sglist_init(&s->sg, DEVICE(m), io->len / MACIO_PAGE_SIZE + 1,
&address_space_memory);
qemu_sglist_add(&s->sg, io->addr, io->len);
s->io_buffer_size -= io->len;
s->io_buffer_index += io->len;
io->len = 0;
s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset, 0x1,
pmac_ide_atapi_transfer_cb, io);
return;
done:
dma_memory_unmap(&address_space_memory, io->dma_mem, io->dma_len,
io->dir, io->dma_len);
if (ret < 0) {
block_acct_failed(blk_get_stats(s->blk), &s->acct);
} else {
block_acct_done(blk_get_stats(s->blk), &s->acct);
}
ide_set_inactive(s, false);
io->dma_end(opaque);
}
static void pmac_ide_transfer_cb(void *opaque, int ret)
{
DBDMA_io *io = opaque;
MACIOIDEState *m = io->opaque;
IDEState *s = idebus_active_if(&m->bus);
int64_t offset;
MACIO_DPRINTF("pmac_ide_transfer_cb\n");
if (ret < 0) {
MACIO_DPRINTF("DMA error: %d\n", ret);
qemu_sglist_destroy(&s->sg);
ide_dma_error(s);
goto done;
}
if (!m->dma_active) {
MACIO_DPRINTF("waiting for data (%#x - %#x - %x)\n",
s->nsector, io->len, s->status);
/* data not ready yet, wait for the channel to get restarted */
io->processing = false;
return;
}
if (s->io_buffer_size <= 0) {
MACIO_DPRINTF("End of IDE transfer\n");
qemu_sglist_destroy(&s->sg);
s->status = READY_STAT | SEEK_STAT;
ide_set_irq(s->bus);
m->dma_active = false;
goto done;
}
if (io->len == 0) {
MACIO_DPRINTF("End of DMA transfer\n");
goto done;
}
/* Calculate number of sectors */
offset = (ide_get_sector(s) << 9) + s->io_buffer_index;
qemu_sglist_init(&s->sg, DEVICE(m), io->len / MACIO_PAGE_SIZE + 1,
&address_space_memory);
qemu_sglist_add(&s->sg, io->addr, io->len);
s->io_buffer_size -= io->len;
s->io_buffer_index += io->len;
io->len = 0;
switch (s->dma_cmd) {
case IDE_DMA_READ:
s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset, 0x1,
pmac_ide_atapi_transfer_cb, io);
break;
case IDE_DMA_WRITE:
s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, offset, 0x1,
pmac_ide_transfer_cb, io);
break;
case IDE_DMA_TRIM:
s->bus->dma->aiocb = dma_blk_io(blk_get_aio_context(s->blk), &s->sg,
offset, 0x1, ide_issue_trim, s->blk,
pmac_ide_transfer_cb, io,
DMA_DIRECTION_TO_DEVICE);
break;
default:
abort();
}
return;
done:
dma_memory_unmap(&address_space_memory, io->dma_mem, io->dma_len,
io->dir, io->dma_len);
if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
if (ret < 0) {
block_acct_failed(blk_get_stats(s->blk), &s->acct);
} else {
block_acct_done(blk_get_stats(s->blk), &s->acct);
}
}
ide_set_inactive(s, false);
io->dma_end(opaque);
}
static void pmac_ide_transfer(DBDMA_io *io)
{
MACIOIDEState *m = io->opaque;
IDEState *s = idebus_active_if(&m->bus);
MACIO_DPRINTF("\n");
if (s->drive_kind == IDE_CD) {
block_acct_start(blk_get_stats(s->blk), &s->acct, io->len,
BLOCK_ACCT_READ);
pmac_ide_atapi_transfer_cb(io, 0);
return;
}
switch (s->dma_cmd) {
case IDE_DMA_READ:
block_acct_start(blk_get_stats(s->blk), &s->acct, io->len,
BLOCK_ACCT_READ);
break;
case IDE_DMA_WRITE:
block_acct_start(blk_get_stats(s->blk), &s->acct, io->len,
BLOCK_ACCT_WRITE);
break;
default:
break;
}
pmac_ide_transfer_cb(io, 0);
}
static void pmac_ide_flush(DBDMA_io *io)
{
MACIOIDEState *m = io->opaque;
IDEState *s = idebus_active_if(&m->bus);
if (s->bus->dma->aiocb) {
blk_drain(s->blk);
}
}
/* PowerMac IDE memory IO */
static uint64_t pmac_ide_read(void *opaque, hwaddr addr, unsigned size)
{
MACIOIDEState *d = opaque;
uint64_t retval = 0xffffffff;
int reg = addr >> 4;
switch (reg) {
case 0x0:
if (size == 2) {
retval = ide_data_readw(&d->bus, 0);
} else if (size == 4) {
retval = ide_data_readl(&d->bus, 0);
}
break;
case 0x1 ... 0x7:
if (size == 1) {
retval = ide_ioport_read(&d->bus, reg);
}
break;
case 0x8:
case 0x16:
if (size == 1) {
retval = ide_status_read(&d->bus, 0);
}
break;
case 0x20:
if (size == 4) {
retval = d->timing_reg;
}
break;
case 0x30:
/* This is an interrupt state register that only exists
* in the KeyLargo and later variants. Bit 0x8000_0000
* latches the DMA interrupt and has to be written to
* clear. Bit 0x4000_0000 is an image of the disk
* interrupt. MacOS X relies on this and will hang if
* we don't provide at least the disk interrupt
*/
if (size == 4) {
retval = d->irq_reg;
}
break;
}
return retval;
}
static void pmac_ide_write(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
MACIOIDEState *d = opaque;
int reg = addr >> 4;
switch (reg) {
case 0x0:
if (size == 2) {
ide_data_writew(&d->bus, 0, val);
} else if (size == 4) {
ide_data_writel(&d->bus, 0, val);
}
break;
case 0x1 ... 0x7:
if (size == 1) {
ide_ioport_write(&d->bus, reg, val);
}
break;
case 0x8:
case 0x16:
if (size == 1) {
ide_cmd_write(&d->bus, 0, val);
}
break;
case 0x20:
if (size == 4) {
d->timing_reg = val;
}
break;
case 0x30:
if (size == 4) {
if (val & 0x80000000u) {
d->irq_reg &= 0x7fffffff;
}
}
break;
}
}
static const MemoryRegionOps pmac_ide_ops = {
.read = pmac_ide_read,
.write = pmac_ide_write,
.valid.min_access_size = 1,
.valid.max_access_size = 4,
.endianness = DEVICE_LITTLE_ENDIAN,
};
static const VMStateDescription vmstate_pmac = {
.name = "ide",
.version_id = 5,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
VMSTATE_IDE_BUS(bus, MACIOIDEState),
VMSTATE_IDE_DRIVES(bus.ifs, MACIOIDEState),
VMSTATE_BOOL(dma_active, MACIOIDEState),
VMSTATE_UINT32(timing_reg, MACIOIDEState),
VMSTATE_UINT32(irq_reg, MACIOIDEState),
VMSTATE_END_OF_LIST()
}
};
static void macio_ide_reset(DeviceState *dev)
{
MACIOIDEState *d = MACIO_IDE(dev);
ide_bus_reset(&d->bus);
}
static int ide_nop_int(IDEDMA *dma, int x)
{
return 0;
}
static int32_t ide_nop_int32(IDEDMA *dma, int32_t l)
{
return 0;
}
static void ide_dbdma_start(IDEDMA *dma, IDEState *s,
BlockCompletionFunc *cb)
{
MACIOIDEState *m = container_of(dma, MACIOIDEState, dma);
s->io_buffer_index = 0;
if (s->drive_kind == IDE_CD) {
s->io_buffer_size = s->packet_transfer_size;
} else {
s->io_buffer_size = s->nsector * BDRV_SECTOR_SIZE;
}
MACIO_DPRINTF("\n\n------------ IDE transfer\n");
MACIO_DPRINTF("buffer_size: %x buffer_index: %x\n",
s->io_buffer_size, s->io_buffer_index);
MACIO_DPRINTF("lba: %x size: %x\n", s->lba, s->io_buffer_size);
MACIO_DPRINTF("-------------------------\n");
m->dma_active = true;
DBDMA_kick(m->dbdma);
}
static const IDEDMAOps dbdma_ops = {
.start_dma = ide_dbdma_start,
.prepare_buf = ide_nop_int32,
.rw_buf = ide_nop_int,
};
static void macio_ide_realizefn(DeviceState *dev, Error **errp)
{
MACIOIDEState *s = MACIO_IDE(dev);
ide_init2(&s->bus, s->ide_irq);
/* Register DMA callbacks */
s->dma.ops = &dbdma_ops;
s->bus.dma = &s->dma;
}
static void pmac_ide_irq(void *opaque, int n, int level)
{
MACIOIDEState *s = opaque;
uint32_t mask = 0x80000000u >> n;
/* We need to reflect the IRQ state in the irq register */
if (level) {
s->irq_reg |= mask;
} else {
s->irq_reg &= ~mask;
}
if (n) {
qemu_set_irq(s->real_ide_irq, level);
} else {
qemu_set_irq(s->real_dma_irq, level);
}
}
static void macio_ide_initfn(Object *obj)
{
SysBusDevice *d = SYS_BUS_DEVICE(obj);
MACIOIDEState *s = MACIO_IDE(obj);
ide_bus_new(&s->bus, sizeof(s->bus), DEVICE(obj), 0, 2);
memory_region_init_io(&s->mem, obj, &pmac_ide_ops, s, "pmac-ide", 0x1000);
sysbus_init_mmio(d, &s->mem);
sysbus_init_irq(d, &s->real_ide_irq);
sysbus_init_irq(d, &s->real_dma_irq);
s->dma_irq = qemu_allocate_irq(pmac_ide_irq, s, 0);
s->ide_irq = qemu_allocate_irq(pmac_ide_irq, s, 1);
object_property_add_link(obj, "dbdma", TYPE_MAC_DBDMA,
(Object **) &s->dbdma,
qdev_prop_allow_set_link_before_realize, 0, NULL);
}
static Property macio_ide_properties[] = {
DEFINE_PROP_UINT32("channel", MACIOIDEState, channel, 0),
DEFINE_PROP_END_OF_LIST(),
};
static void macio_ide_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = macio_ide_realizefn;
dc->reset = macio_ide_reset;
dc->props = macio_ide_properties;
dc->vmsd = &vmstate_pmac;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
}
static const TypeInfo macio_ide_type_info = {
.name = TYPE_MACIO_IDE,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(MACIOIDEState),
.instance_init = macio_ide_initfn,
.class_init = macio_ide_class_init,
};
static void macio_ide_register_types(void)
{
type_register_static(&macio_ide_type_info);
}
/* hd_table must contain 2 block drivers */
void macio_ide_init_drives(MACIOIDEState *s, DriveInfo **hd_table)
{
int i;
for (i = 0; i < 2; i++) {
if (hd_table[i]) {
ide_create_drive(&s->bus, i, hd_table[i]);
}
}
}
void macio_ide_register_dma(MACIOIDEState *s)
{
DBDMA_register_channel(s->dbdma, s->channel, s->dma_irq,
pmac_ide_transfer, pmac_ide_flush, s);
}
type_init(macio_ide_register_types)
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