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-rw-r--r--hw/ide/macio.c513
1 files changed, 513 insertions, 0 deletions
diff --git a/hw/ide/macio.c b/hw/ide/macio.c
new file mode 100644
index 000000000..b03d401ce
--- /dev/null
+++ b/hw/ide/macio.c
@@ -0,0 +1,513 @@
+/*
+ * 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/ppc/mac.h"
+#include "hw/ppc/mac_dbdma.h"
+#include "hw/qdev-properties.h"
+#include "migration/vmstate.h"
+#include "qemu/module.h"
+#include "hw/misc/macio/macio.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,
+ 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_ctrl_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(const IDEDMA *dma, bool is_write)
+{
+ return 0;
+}
+
+static int32_t ide_nop_int32(const IDEDMA *dma, int32_t l)
+{
+ return 0;
+}
+
+static void ide_dbdma_start(const 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_init(&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);
+}
+
+static Property macio_ide_properties[] = {
+ DEFINE_PROP_UINT32("channel", MACIOIDEState, channel, 0),
+ DEFINE_PROP_UINT32("addr", MACIOIDEState, addr, -1),
+ 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;
+ device_class_set_props(dc, 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)