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-rw-r--r--qemu/hw/ide/macio.c627
1 files changed, 627 insertions, 0 deletions
diff --git a/qemu/hw/ide/macio.c b/qemu/hw/ide/macio.c
new file mode 100644
index 000000000..66ac2baa9
--- /dev/null
+++ b/qemu/hw/ide/macio.c
@@ -0,0 +1,627 @@
+/*
+ * 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 "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
+
+/*
+ * Unaligned DMA read/write access functions required for OS X/Darwin which
+ * don't perform DMA transactions on sector boundaries. These functions are
+ * modelled on bdrv_co_do_preadv()/bdrv_co_do_pwritev() and so should be
+ * easy to remove if the unaligned block APIs are ever exposed.
+ */
+
+static void pmac_dma_read(BlockBackend *blk,
+ int64_t offset, unsigned int bytes,
+ void (*cb)(void *opaque, int ret), void *opaque)
+{
+ DBDMA_io *io = opaque;
+ MACIOIDEState *m = io->opaque;
+ IDEState *s = idebus_active_if(&m->bus);
+ dma_addr_t dma_addr, dma_len;
+ void *mem;
+ int64_t sector_num;
+ int nsector;
+ uint64_t align = BDRV_SECTOR_SIZE;
+ size_t head_bytes, tail_bytes;
+
+ qemu_iovec_destroy(&io->iov);
+ qemu_iovec_init(&io->iov, io->len / MACIO_PAGE_SIZE + 1);
+
+ sector_num = (offset >> 9);
+ nsector = (io->len >> 9);
+
+ MACIO_DPRINTF("--- DMA read transfer (0x%" HWADDR_PRIx ",0x%x): "
+ "sector_num: %" PRId64 ", nsector: %d\n", io->addr, io->len,
+ sector_num, nsector);
+
+ dma_addr = io->addr;
+ dma_len = io->len;
+ mem = dma_memory_map(&address_space_memory, dma_addr, &dma_len,
+ DMA_DIRECTION_FROM_DEVICE);
+
+ if (offset & (align - 1)) {
+ head_bytes = offset & (align - 1);
+
+ MACIO_DPRINTF("--- DMA unaligned head: sector %" PRId64 ", "
+ "discarding %zu bytes\n", sector_num, head_bytes);
+
+ qemu_iovec_add(&io->iov, &io->head_remainder, head_bytes);
+
+ bytes += offset & (align - 1);
+ offset = offset & ~(align - 1);
+ }
+
+ qemu_iovec_add(&io->iov, mem, io->len);
+
+ if ((offset + bytes) & (align - 1)) {
+ tail_bytes = (offset + bytes) & (align - 1);
+
+ MACIO_DPRINTF("--- DMA unaligned tail: sector %" PRId64 ", "
+ "discarding bytes %zu\n", sector_num, tail_bytes);
+
+ qemu_iovec_add(&io->iov, &io->tail_remainder, align - tail_bytes);
+ bytes = ROUND_UP(bytes, align);
+ }
+
+ s->io_buffer_size -= io->len;
+ s->io_buffer_index += io->len;
+
+ io->len = 0;
+
+ MACIO_DPRINTF("--- Block read transfer - sector_num: %" PRIx64 " "
+ "nsector: %x\n", (offset >> 9), (bytes >> 9));
+
+ m->aiocb = blk_aio_readv(blk, (offset >> 9), &io->iov, (bytes >> 9),
+ cb, io);
+}
+
+static void pmac_dma_write(BlockBackend *blk,
+ int64_t offset, int bytes,
+ void (*cb)(void *opaque, int ret), void *opaque)
+{
+ DBDMA_io *io = opaque;
+ MACIOIDEState *m = io->opaque;
+ IDEState *s = idebus_active_if(&m->bus);
+ dma_addr_t dma_addr, dma_len;
+ void *mem;
+ int64_t sector_num;
+ int nsector;
+ uint64_t align = BDRV_SECTOR_SIZE;
+ size_t head_bytes, tail_bytes;
+ bool unaligned_head = false, unaligned_tail = false;
+
+ qemu_iovec_destroy(&io->iov);
+ qemu_iovec_init(&io->iov, io->len / MACIO_PAGE_SIZE + 1);
+
+ sector_num = (offset >> 9);
+ nsector = (io->len >> 9);
+
+ MACIO_DPRINTF("--- DMA write transfer (0x%" HWADDR_PRIx ",0x%x): "
+ "sector_num: %" PRId64 ", nsector: %d\n", io->addr, io->len,
+ sector_num, nsector);
+
+ dma_addr = io->addr;
+ dma_len = io->len;
+ mem = dma_memory_map(&address_space_memory, dma_addr, &dma_len,
+ DMA_DIRECTION_TO_DEVICE);
+
+ if (offset & (align - 1)) {
+ head_bytes = offset & (align - 1);
+ sector_num = ((offset & ~(align - 1)) >> 9);
+
+ MACIO_DPRINTF("--- DMA unaligned head: pre-reading head sector %"
+ PRId64 "\n", sector_num);
+
+ blk_pread(s->blk, (sector_num << 9), &io->head_remainder, align);
+
+ qemu_iovec_add(&io->iov, &io->head_remainder, head_bytes);
+ qemu_iovec_add(&io->iov, mem, io->len);
+
+ bytes += offset & (align - 1);
+ offset = offset & ~(align - 1);
+
+ unaligned_head = true;
+ }
+
+ if ((offset + bytes) & (align - 1)) {
+ tail_bytes = (offset + bytes) & (align - 1);
+ sector_num = (((offset + bytes) & ~(align - 1)) >> 9);
+
+ MACIO_DPRINTF("--- DMA unaligned tail: pre-reading tail sector %"
+ PRId64 "\n", sector_num);
+
+ blk_pread(s->blk, (sector_num << 9), &io->tail_remainder, align);
+
+ if (!unaligned_head) {
+ qemu_iovec_add(&io->iov, mem, io->len);
+ }
+
+ qemu_iovec_add(&io->iov, &io->tail_remainder + tail_bytes,
+ align - tail_bytes);
+
+ bytes = ROUND_UP(bytes, align);
+
+ unaligned_tail = true;
+ }
+
+ if (!unaligned_head && !unaligned_tail) {
+ qemu_iovec_add(&io->iov, mem, io->len);
+ }
+
+ s->io_buffer_size -= io->len;
+ s->io_buffer_index += io->len;
+
+ io->len = 0;
+
+ MACIO_DPRINTF("--- Block write transfer - sector_num: %" PRIx64 " "
+ "nsector: %x\n", (offset >> 9), (bytes >> 9));
+
+ m->aiocb = blk_aio_writev(blk, (offset >> 9), &io->iov, (bytes >> 9),
+ cb, io);
+}
+
+static void pmac_dma_trim(BlockBackend *blk,
+ int64_t offset, int bytes,
+ void (*cb)(void *opaque, int ret), void *opaque)
+{
+ DBDMA_io *io = opaque;
+ MACIOIDEState *m = io->opaque;
+ IDEState *s = idebus_active_if(&m->bus);
+ dma_addr_t dma_addr, dma_len;
+ void *mem;
+
+ qemu_iovec_destroy(&io->iov);
+ qemu_iovec_init(&io->iov, io->len / MACIO_PAGE_SIZE + 1);
+
+ dma_addr = io->addr;
+ dma_len = io->len;
+ mem = dma_memory_map(&address_space_memory, dma_addr, &dma_len,
+ DMA_DIRECTION_TO_DEVICE);
+
+ qemu_iovec_add(&io->iov, mem, io->len);
+ s->io_buffer_size -= io->len;
+ s->io_buffer_index += io->len;
+ io->len = 0;
+
+ m->aiocb = ide_issue_trim(blk, (offset >> 9), &io->iov, (bytes >> 9),
+ cb, io);
+}
+
+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);
+ 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");
+ 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);
+ cpu_physical_memory_write(io->addr, s->io_buffer, s->io_buffer_size);
+ ide_atapi_cmd_ok(s);
+ m->dma_active = false;
+ goto done;
+ }
+
+ /* Calculate current offset */
+ offset = (int64_t)(s->lba << 11) + s->io_buffer_index;
+
+ pmac_dma_read(s->blk, offset, io->len, pmac_ide_atapi_transfer_cb, io);
+ return;
+
+done:
+ block_acct_done(blk_get_stats(s->blk), &s->acct);
+ io->dma_end(opaque);
+
+ return;
+}
+
+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);
+ m->aiocb = NULL;
+ 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");
+ 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;
+
+ switch (s->dma_cmd) {
+ case IDE_DMA_READ:
+ pmac_dma_read(s->blk, offset, io->len, pmac_ide_transfer_cb, io);
+ break;
+ case IDE_DMA_WRITE:
+ pmac_dma_write(s->blk, offset, io->len, pmac_ide_transfer_cb, io);
+ break;
+ case IDE_DMA_TRIM:
+ pmac_dma_trim(s->blk, offset, io->len, pmac_ide_transfer_cb, io);
+ break;
+ }
+
+ return;
+
+done:
+ if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
+ block_acct_done(blk_get_stats(s->blk), &s->acct);
+ }
+ 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;
+
+ if (m->aiocb) {
+ blk_drain_all();
+ }
+}
+
+/* PowerMac IDE memory IO */
+static void pmac_ide_writeb (void *opaque,
+ hwaddr addr, uint32_t val)
+{
+ MACIOIDEState *d = opaque;
+
+ addr = (addr & 0xFFF) >> 4;
+ switch (addr) {
+ case 1 ... 7:
+ ide_ioport_write(&d->bus, addr, val);
+ break;
+ case 8:
+ case 22:
+ ide_cmd_write(&d->bus, 0, val);
+ break;
+ default:
+ break;
+ }
+}
+
+static uint32_t pmac_ide_readb (void *opaque,hwaddr addr)
+{
+ uint8_t retval;
+ MACIOIDEState *d = opaque;
+
+ addr = (addr & 0xFFF) >> 4;
+ switch (addr) {
+ case 1 ... 7:
+ retval = ide_ioport_read(&d->bus, addr);
+ break;
+ case 8:
+ case 22:
+ retval = ide_status_read(&d->bus, 0);
+ break;
+ default:
+ retval = 0xFF;
+ break;
+ }
+ return retval;
+}
+
+static void pmac_ide_writew (void *opaque,
+ hwaddr addr, uint32_t val)
+{
+ MACIOIDEState *d = opaque;
+
+ addr = (addr & 0xFFF) >> 4;
+ val = bswap16(val);
+ if (addr == 0) {
+ ide_data_writew(&d->bus, 0, val);
+ }
+}
+
+static uint32_t pmac_ide_readw (void *opaque,hwaddr addr)
+{
+ uint16_t retval;
+ MACIOIDEState *d = opaque;
+
+ addr = (addr & 0xFFF) >> 4;
+ if (addr == 0) {
+ retval = ide_data_readw(&d->bus, 0);
+ } else {
+ retval = 0xFFFF;
+ }
+ retval = bswap16(retval);
+ return retval;
+}
+
+static void pmac_ide_writel (void *opaque,
+ hwaddr addr, uint32_t val)
+{
+ MACIOIDEState *d = opaque;
+
+ addr = (addr & 0xFFF) >> 4;
+ val = bswap32(val);
+ if (addr == 0) {
+ ide_data_writel(&d->bus, 0, val);
+ }
+}
+
+static uint32_t pmac_ide_readl (void *opaque,hwaddr addr)
+{
+ uint32_t retval;
+ MACIOIDEState *d = opaque;
+
+ addr = (addr & 0xFFF) >> 4;
+ if (addr == 0) {
+ retval = ide_data_readl(&d->bus, 0);
+ } else {
+ retval = 0xFFFFFFFF;
+ }
+ retval = bswap32(retval);
+ return retval;
+}
+
+static const MemoryRegionOps pmac_ide_ops = {
+ .old_mmio = {
+ .write = {
+ pmac_ide_writeb,
+ pmac_ide_writew,
+ pmac_ide_writel,
+ },
+ .read = {
+ pmac_ide_readb,
+ pmac_ide_readw,
+ pmac_ide_readl,
+ },
+ },
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static const VMStateDescription vmstate_pmac = {
+ .name = "ide",
+ .version_id = 3,
+ .minimum_version_id = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_IDE_BUS(bus, MACIOIDEState),
+ VMSTATE_IDE_DRIVES(bus.ifs, 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->irq);
+
+ /* Register DMA callbacks */
+ s->dma.ops = &dbdma_ops;
+ s->bus.dma = &s->dma;
+}
+
+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->irq);
+ sysbus_init_irq(d, &s->dma_irq);
+}
+
+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->vmsd = &vmstate_pmac;
+}
+
+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, void *dbdma, int channel)
+{
+ s->dbdma = dbdma;
+ DBDMA_register_channel(dbdma, channel, s->dma_irq,
+ pmac_ide_transfer, pmac_ide_flush, s);
+}
+
+type_init(macio_ide_register_types)