2 * QEMU IDE Emulation: MacIO support.
4 * Copyright (c) 2003 Fabrice Bellard
5 * Copyright (c) 2006 Openedhand Ltd.
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #include <hw/ppc_mac.h>
27 #include <hw/mac_dbdma.h>
29 #include "block_int.h"
32 #include <hw/ide/internal.h>
34 /***********************************************************/
35 /* MacIO based PowerPC IDE */
37 typedef struct MACIOIDEState {
39 BlockDriverAIOCB *aiocb;
42 #define MACIO_PAGE_SIZE 4096
44 static void pmac_ide_atapi_transfer_cb(void *opaque, int ret)
46 DBDMA_io *io = opaque;
47 MACIOIDEState *m = io->opaque;
48 IDEState *s = idebus_active_if(&m->bus);
52 qemu_sglist_destroy(&s->sg);
53 ide_atapi_io_error(s, ret);
58 if (s->io_buffer_size > 0) {
60 qemu_sglist_destroy(&s->sg);
62 s->packet_transfer_size -= s->io_buffer_size;
64 s->io_buffer_index += s->io_buffer_size;
65 s->lba += s->io_buffer_index >> 11;
66 s->io_buffer_index &= 0x7ff;
69 if (s->packet_transfer_size <= 0)
77 /* launch next transfer */
79 s->io_buffer_size = io->len;
81 qemu_sglist_init(&s->sg, io->len / MACIO_PAGE_SIZE + 1);
82 qemu_sglist_add(&s->sg, io->addr, io->len);
86 m->aiocb = dma_bdrv_read(s->bs, &s->sg,
87 (int64_t)(s->lba << 2) + (s->io_buffer_index >> 9),
88 pmac_ide_atapi_transfer_cb, io);
90 qemu_sglist_destroy(&s->sg);
91 /* Note: media not present is the most likely case */
92 ide_atapi_cmd_error(s, SENSE_NOT_READY,
93 ASC_MEDIUM_NOT_PRESENT);
99 static void pmac_ide_transfer_cb(void *opaque, int ret)
101 DBDMA_io *io = opaque;
102 MACIOIDEState *m = io->opaque;
103 IDEState *s = idebus_active_if(&m->bus);
109 qemu_sglist_destroy(&s->sg);
115 sector_num = ide_get_sector(s);
116 if (s->io_buffer_size > 0) {
118 qemu_sglist_destroy(&s->sg);
119 n = (s->io_buffer_size + 0x1ff) >> 9;
121 ide_set_sector(s, sector_num);
125 /* end of transfer ? */
126 if (s->nsector == 0) {
127 s->status = READY_STAT | SEEK_STAT;
138 /* launch next transfer */
140 s->io_buffer_index = 0;
141 s->io_buffer_size = io->len;
143 qemu_sglist_init(&s->sg, io->len / MACIO_PAGE_SIZE + 1);
144 qemu_sglist_add(&s->sg, io->addr, io->len);
149 m->aiocb = dma_bdrv_read(s->bs, &s->sg, sector_num,
150 pmac_ide_transfer_cb, io);
152 m->aiocb = dma_bdrv_write(s->bs, &s->sg, sector_num,
153 pmac_ide_transfer_cb, io);
155 pmac_ide_transfer_cb(io, -1);
158 static void pmac_ide_transfer(DBDMA_io *io)
160 MACIOIDEState *m = io->opaque;
161 IDEState *s = idebus_active_if(&m->bus);
163 s->io_buffer_size = 0;
164 if (s->drive_kind == IDE_CD) {
165 pmac_ide_atapi_transfer_cb(io, 0);
169 pmac_ide_transfer_cb(io, 0);
172 static void pmac_ide_flush(DBDMA_io *io)
174 MACIOIDEState *m = io->opaque;
180 /* PowerMac IDE memory IO */
181 static void pmac_ide_writeb (void *opaque,
182 target_phys_addr_t addr, uint32_t val)
184 MACIOIDEState *d = opaque;
186 addr = (addr & 0xFFF) >> 4;
189 ide_ioport_write(&d->bus, addr, val);
193 ide_cmd_write(&d->bus, 0, val);
200 static uint32_t pmac_ide_readb (void *opaque,target_phys_addr_t addr)
203 MACIOIDEState *d = opaque;
205 addr = (addr & 0xFFF) >> 4;
208 retval = ide_ioport_read(&d->bus, addr);
212 retval = ide_status_read(&d->bus, 0);
221 static void pmac_ide_writew (void *opaque,
222 target_phys_addr_t addr, uint32_t val)
224 MACIOIDEState *d = opaque;
226 addr = (addr & 0xFFF) >> 4;
229 ide_data_writew(&d->bus, 0, val);
233 static uint32_t pmac_ide_readw (void *opaque,target_phys_addr_t addr)
236 MACIOIDEState *d = opaque;
238 addr = (addr & 0xFFF) >> 4;
240 retval = ide_data_readw(&d->bus, 0);
244 retval = bswap16(retval);
248 static void pmac_ide_writel (void *opaque,
249 target_phys_addr_t addr, uint32_t val)
251 MACIOIDEState *d = opaque;
253 addr = (addr & 0xFFF) >> 4;
256 ide_data_writel(&d->bus, 0, val);
260 static uint32_t pmac_ide_readl (void *opaque,target_phys_addr_t addr)
263 MACIOIDEState *d = opaque;
265 addr = (addr & 0xFFF) >> 4;
267 retval = ide_data_readl(&d->bus, 0);
271 retval = bswap32(retval);
275 static CPUWriteMemoryFunc * const pmac_ide_write[] = {
281 static CPUReadMemoryFunc * const pmac_ide_read[] = {
287 static const VMStateDescription vmstate_pmac = {
290 .minimum_version_id = 0,
291 .minimum_version_id_old = 0,
292 .fields = (VMStateField []) {
293 VMSTATE_IDE_BUS(bus, MACIOIDEState),
294 VMSTATE_IDE_DRIVES(bus.ifs, MACIOIDEState),
295 VMSTATE_END_OF_LIST()
299 static void pmac_ide_reset(void *opaque)
301 MACIOIDEState *d = opaque;
303 ide_bus_reset(&d->bus);
306 /* hd_table must contain 4 block drivers */
307 /* PowerMac uses memory mapped registers, not I/O. Return the memory
308 I/O index to access the ide. */
309 int pmac_ide_init (DriveInfo **hd_table, qemu_irq irq,
310 void *dbdma, int channel, qemu_irq dma_irq)
315 d = qemu_mallocz(sizeof(MACIOIDEState));
316 ide_init2_with_non_qdev_drives(&d->bus, hd_table[0], hd_table[1], irq);
319 DBDMA_register_channel(dbdma, channel, dma_irq, pmac_ide_transfer, pmac_ide_flush, d);
321 pmac_ide_memory = cpu_register_io_memory(pmac_ide_read,
323 DEVICE_NATIVE_ENDIAN);
324 vmstate_register(NULL, 0, &vmstate_pmac, d);
325 qemu_register_reset(pmac_ide_reset, d);
327 return pmac_ide_memory;