summaryrefslogtreecommitdiff
path: root/hw/ide-macio.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/ide-macio.c')
-rw-r--r--hw/ide-macio.c355
1 files changed, 355 insertions, 0 deletions
diff --git a/hw/ide-macio.c b/hw/ide-macio.c
new file mode 100644
index 0000000000..d4135efe3a
--- /dev/null
+++ b/hw/ide-macio.c
@@ -0,0 +1,355 @@
+/*
+ * 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.h"
+#include "block.h"
+#include "block_int.h"
+#include "sysemu.h"
+#include "dma.h"
+#include "ppc_mac.h"
+#include "mac_dbdma.h"
+#include "ide-internal.h"
+
+/***********************************************************/
+/* MacIO based PowerPC IDE */
+
+typedef struct MACIOIDEState {
+ IDEBus bus;
+ BlockDriverAIOCB *aiocb;
+} MACIOIDEState;
+
+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);
+
+ if (ret < 0) {
+ m->aiocb = NULL;
+ qemu_sglist_destroy(&s->sg);
+ ide_atapi_io_error(s, ret);
+ io->dma_end(opaque);
+ return;
+ }
+
+ if (s->io_buffer_size > 0) {
+ m->aiocb = NULL;
+ qemu_sglist_destroy(&s->sg);
+
+ s->packet_transfer_size -= s->io_buffer_size;
+
+ s->io_buffer_index += s->io_buffer_size;
+ s->lba += s->io_buffer_index >> 11;
+ s->io_buffer_index &= 0x7ff;
+ }
+
+ if (s->packet_transfer_size <= 0)
+ ide_atapi_cmd_ok(s);
+
+ if (io->len == 0) {
+ io->dma_end(opaque);
+ return;
+ }
+
+ /* launch next transfer */
+
+ s->io_buffer_size = io->len;
+
+ qemu_sglist_init(&s->sg, io->len / TARGET_PAGE_SIZE + 1);
+ qemu_sglist_add(&s->sg, io->addr, io->len);
+ io->addr += io->len;
+ io->len = 0;
+
+ m->aiocb = dma_bdrv_read(s->bs, &s->sg,
+ (int64_t)(s->lba << 2) + (s->io_buffer_index >> 9),
+ pmac_ide_atapi_transfer_cb, io);
+ if (!m->aiocb) {
+ qemu_sglist_destroy(&s->sg);
+ /* Note: media not present is the most likely case */
+ ide_atapi_cmd_error(s, SENSE_NOT_READY,
+ ASC_MEDIUM_NOT_PRESENT);
+ 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);
+ int n;
+ int64_t sector_num;
+
+ if (ret < 0) {
+ m->aiocb = NULL;
+ qemu_sglist_destroy(&s->sg);
+ ide_dma_error(s);
+ io->dma_end(io);
+ return;
+ }
+
+ sector_num = ide_get_sector(s);
+ if (s->io_buffer_size > 0) {
+ m->aiocb = NULL;
+ qemu_sglist_destroy(&s->sg);
+ n = (s->io_buffer_size + 0x1ff) >> 9;
+ sector_num += n;
+ ide_set_sector(s, sector_num);
+ s->nsector -= n;
+ }
+
+ /* end of transfer ? */
+ if (s->nsector == 0) {
+ s->status = READY_STAT | SEEK_STAT;
+ ide_set_irq(s);
+ }
+
+ /* end of DMA ? */
+
+ if (io->len == 0) {
+ io->dma_end(io);
+ return;
+ }
+
+ /* launch next transfer */
+
+ s->io_buffer_index = 0;
+ s->io_buffer_size = io->len;
+
+ qemu_sglist_init(&s->sg, io->len / TARGET_PAGE_SIZE + 1);
+ qemu_sglist_add(&s->sg, io->addr, io->len);
+ io->addr += io->len;
+ io->len = 0;
+
+ if (s->is_read)
+ m->aiocb = dma_bdrv_read(s->bs, &s->sg, sector_num,
+ pmac_ide_transfer_cb, io);
+ else
+ m->aiocb = dma_bdrv_write(s->bs, &s->sg, sector_num,
+ pmac_ide_transfer_cb, io);
+ if (!m->aiocb)
+ pmac_ide_transfer_cb(io, -1);
+}
+
+static void pmac_ide_transfer(DBDMA_io *io)
+{
+ MACIOIDEState *m = io->opaque;
+ IDEState *s = idebus_active_if(&m->bus);
+
+ s->io_buffer_size = 0;
+ if (s->is_cdrom) {
+ pmac_ide_atapi_transfer_cb(io, 0);
+ return;
+ }
+
+ pmac_ide_transfer_cb(io, 0);
+}
+
+static void pmac_ide_flush(DBDMA_io *io)
+{
+ MACIOIDEState *m = io->opaque;
+
+ if (m->aiocb)
+ qemu_aio_flush();
+}
+
+/* PowerMac IDE memory IO */
+static void pmac_ide_writeb (void *opaque,
+ target_phys_addr_t 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,target_phys_addr_t 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,
+ target_phys_addr_t addr, uint32_t val)
+{
+ MACIOIDEState *d = opaque;
+
+ addr = (addr & 0xFFF) >> 4;
+#ifdef TARGET_WORDS_BIGENDIAN
+ val = bswap16(val);
+#endif
+ if (addr == 0) {
+ ide_data_writew(&d->bus, 0, val);
+ }
+}
+
+static uint32_t pmac_ide_readw (void *opaque,target_phys_addr_t addr)
+{
+ uint16_t retval;
+ MACIOIDEState *d = opaque;
+
+ addr = (addr & 0xFFF) >> 4;
+ if (addr == 0) {
+ retval = ide_data_readw(&d->bus, 0);
+ } else {
+ retval = 0xFFFF;
+ }
+#ifdef TARGET_WORDS_BIGENDIAN
+ retval = bswap16(retval);
+#endif
+ return retval;
+}
+
+static void pmac_ide_writel (void *opaque,
+ target_phys_addr_t addr, uint32_t val)
+{
+ MACIOIDEState *d = opaque;
+
+ addr = (addr & 0xFFF) >> 4;
+#ifdef TARGET_WORDS_BIGENDIAN
+ val = bswap32(val);
+#endif
+ if (addr == 0) {
+ ide_data_writel(&d->bus, 0, val);
+ }
+}
+
+static uint32_t pmac_ide_readl (void *opaque,target_phys_addr_t addr)
+{
+ uint32_t retval;
+ MACIOIDEState *d = opaque;
+
+ addr = (addr & 0xFFF) >> 4;
+ if (addr == 0) {
+ retval = ide_data_readl(&d->bus, 0);
+ } else {
+ retval = 0xFFFFFFFF;
+ }
+#ifdef TARGET_WORDS_BIGENDIAN
+ retval = bswap32(retval);
+#endif
+ return retval;
+}
+
+static CPUWriteMemoryFunc *pmac_ide_write[] = {
+ pmac_ide_writeb,
+ pmac_ide_writew,
+ pmac_ide_writel,
+};
+
+static CPUReadMemoryFunc *pmac_ide_read[] = {
+ pmac_ide_readb,
+ pmac_ide_readw,
+ pmac_ide_readl,
+};
+
+static void pmac_ide_save(QEMUFile *f, void *opaque)
+{
+ MACIOIDEState *d = opaque;
+ unsigned int i;
+
+ /* per IDE interface data */
+ idebus_save(f, &d->bus);
+
+ /* per IDE drive data */
+ for(i = 0; i < 2; i++) {
+ ide_save(f, &d->bus.ifs[i]);
+ }
+}
+
+static int pmac_ide_load(QEMUFile *f, void *opaque, int version_id)
+{
+ MACIOIDEState *d = opaque;
+ unsigned int i;
+
+ if (version_id != 1 && version_id != 3)
+ return -EINVAL;
+
+ /* per IDE interface data */
+ idebus_load(f, &d->bus, version_id);
+
+ /* per IDE drive data */
+ for(i = 0; i < 2; i++) {
+ ide_load(f, &d->bus.ifs[i], version_id);
+ }
+ return 0;
+}
+
+static void pmac_ide_reset(void *opaque)
+{
+ MACIOIDEState *d = opaque;
+
+ ide_reset(d->bus.ifs +0);
+ ide_reset(d->bus.ifs +1);
+}
+
+/* hd_table must contain 4 block drivers */
+/* PowerMac uses memory mapped registers, not I/O. Return the memory
+ I/O index to access the ide. */
+int pmac_ide_init (BlockDriverState **hd_table, qemu_irq irq,
+ void *dbdma, int channel, qemu_irq dma_irq)
+{
+ MACIOIDEState *d;
+ int pmac_ide_memory;
+
+ d = qemu_mallocz(sizeof(MACIOIDEState));
+ ide_init2(&d->bus, hd_table[0], hd_table[1], irq);
+
+ if (dbdma)
+ DBDMA_register_channel(dbdma, channel, dma_irq, pmac_ide_transfer, pmac_ide_flush, d);
+
+ pmac_ide_memory = cpu_register_io_memory(pmac_ide_read,
+ pmac_ide_write, d);
+ register_savevm("ide", 0, 3, pmac_ide_save, pmac_ide_load, d);
+ qemu_register_reset(pmac_ide_reset, d);
+ pmac_ide_reset(d);
+
+ return pmac_ide_memory;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 03:22:04 +0000