/* * 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/mac_dbdma.h> #include "block.h" #include "dma.h" #include <hw/ide/internal.h> /***********************************************************/ /* MacIO based PowerPC IDE */ typedef struct MACIOIDEState { MemoryRegion mem; IDEBus bus; BlockDriverAIOCB *aiocb; } MACIOIDEState; #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); if (ret < 0) { m->aiocb = NULL; qemu_sglist_destroy(&s->sg); ide_atapi_io_error(s, ret); goto done; } 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) { goto done; } /* launch next transfer */ s->io_buffer_size = io->len; qemu_sglist_init(&s->sg, io->len / MACIO_PAGE_SIZE + 1, NULL); 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); return; done: bdrv_acct_done(s->bs, &s->acct); 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); int n; int64_t sector_num; if (ret < 0) { m->aiocb = NULL; qemu_sglist_destroy(&s->sg); ide_dma_error(s); goto done; } 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->bus); } /* end of DMA ? */ if (io->len == 0) { goto done; } /* launch next transfer */ s->io_buffer_index = 0; s->io_buffer_size = io->len; qemu_sglist_init(&s->sg, io->len / MACIO_PAGE_SIZE + 1, NULL); qemu_sglist_add(&s->sg, io->addr, io->len); io->addr += io->len; io->len = 0; switch (s->dma_cmd) { case IDE_DMA_READ: m->aiocb = dma_bdrv_read(s->bs, &s->sg, sector_num, pmac_ide_transfer_cb, io); break; case IDE_DMA_WRITE: m->aiocb = dma_bdrv_write(s->bs, &s->sg, sector_num, pmac_ide_transfer_cb, io); break; case IDE_DMA_TRIM: m->aiocb = dma_bdrv_io(s->bs, &s->sg, sector_num, ide_issue_trim, pmac_ide_transfer_cb, s, DMA_DIRECTION_TO_DEVICE); break; } return; done: if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) { bdrv_acct_done(s->bs, &s->acct); } io->dma_end(io); } 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->drive_kind == IDE_CD) { bdrv_acct_start(s->bs, &s->acct, io->len, BDRV_ACCT_READ); pmac_ide_atapi_transfer_cb(io, 0); return; } switch (s->dma_cmd) { case IDE_DMA_READ: bdrv_acct_start(s->bs, &s->acct, io->len, BDRV_ACCT_READ); break; case IDE_DMA_WRITE: bdrv_acct_start(s->bs, &s->acct, io->len, BDRV_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) { bdrv_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, .minimum_version_id_old = 0, .fields = (VMStateField []) { VMSTATE_IDE_BUS(bus, MACIOIDEState), VMSTATE_IDE_DRIVES(bus.ifs, MACIOIDEState), VMSTATE_END_OF_LIST() } }; static void pmac_ide_reset(void *opaque) { MACIOIDEState *d = opaque; ide_bus_reset(&d->bus); } /* 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. */ MemoryRegion *pmac_ide_init (DriveInfo **hd_table, qemu_irq irq, void *dbdma, int channel, qemu_irq dma_irq) { MACIOIDEState *d; d = g_malloc0(sizeof(MACIOIDEState)); ide_init2_with_non_qdev_drives(&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); memory_region_init_io(&d->mem, &pmac_ide_ops, d, "pmac-ide", 0x1000); vmstate_register(NULL, 0, &vmstate_pmac, d); qemu_register_reset(pmac_ide_reset, d); return &d->mem; }