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"
33 #include <hw/ide/internal.h>
35 /***********************************************************/
36 /* MacIO based PowerPC IDE */
38 typedef struct MACIOIDEState {
40 BlockDriverAIOCB *aiocb;
43 #define MACIO_PAGE_SIZE 4096
45 static void pmac_ide_atapi_transfer_cb(void *opaque, int ret)
47 DBDMA_io *io = opaque;
48 MACIOIDEState *m = io->opaque;
49 IDEState *s = idebus_active_if(&m->bus);
53 qemu_sglist_destroy(&s->sg);
54 ide_atapi_io_error(s, ret);
59 if (s->io_buffer_size > 0) {
61 qemu_sglist_destroy(&s->sg);
63 s->packet_transfer_size -= s->io_buffer_size;
65 s->io_buffer_index += s->io_buffer_size;
66 s->lba += s->io_buffer_index >> 11;
67 s->io_buffer_index &= 0x7ff;
70 if (s->packet_transfer_size <= 0)
78 /* launch next transfer */
80 s->io_buffer_size = io->len;
82 qemu_sglist_init(&s->sg, io->len / MACIO_PAGE_SIZE + 1);
83 qemu_sglist_add(&s->sg, io->addr, io->len);
87 m->aiocb = dma_bdrv_read(s->bs, &s->sg,
88 (int64_t)(s->lba << 2) + (s->io_buffer_index >> 9),
89 pmac_ide_atapi_transfer_cb, io);
91 qemu_sglist_destroy(&s->sg);
92 /* Note: media not present is the most likely case */
93 ide_atapi_cmd_error(s, SENSE_NOT_READY,
94 ASC_MEDIUM_NOT_PRESENT);
100 static void pmac_ide_transfer_cb(void *opaque, int ret)
102 DBDMA_io *io = opaque;
103 MACIOIDEState *m = io->opaque;
104 IDEState *s = idebus_active_if(&m->bus);
110 qemu_sglist_destroy(&s->sg);
116 sector_num = ide_get_sector(s);
117 if (s->io_buffer_size > 0) {
119 qemu_sglist_destroy(&s->sg);
120 n = (s->io_buffer_size + 0x1ff) >> 9;
122 ide_set_sector(s, sector_num);
126 /* end of transfer ? */
127 if (s->nsector == 0) {
128 s->status = READY_STAT | SEEK_STAT;
139 /* launch next transfer */
141 s->io_buffer_index = 0;
142 s->io_buffer_size = io->len;
144 qemu_sglist_init(&s->sg, io->len / MACIO_PAGE_SIZE + 1);
145 qemu_sglist_add(&s->sg, io->addr, io->len);
150 m->aiocb = dma_bdrv_read(s->bs, &s->sg, sector_num,
151 pmac_ide_transfer_cb, io);
153 m->aiocb = dma_bdrv_write(s->bs, &s->sg, sector_num,
154 pmac_ide_transfer_cb, io);
156 pmac_ide_transfer_cb(io, -1);
159 static void pmac_ide_transfer(DBDMA_io *io)
161 MACIOIDEState *m = io->opaque;
162 IDEState *s = idebus_active_if(&m->bus);
164 s->io_buffer_size = 0;
165 if (s->drive_kind == IDE_CD) {
166 pmac_ide_atapi_transfer_cb(io, 0);
170 pmac_ide_transfer_cb(io, 0);
173 static void pmac_ide_flush(DBDMA_io *io)
175 MACIOIDEState *m = io->opaque;
181 /* PowerMac IDE memory IO */
182 static void pmac_ide_writeb (void *opaque,
183 target_phys_addr_t addr, uint32_t val)
185 MACIOIDEState *d = opaque;
187 addr = (addr & 0xFFF) >> 4;
190 ide_ioport_write(&d->bus, addr, val);
194 ide_cmd_write(&d->bus, 0, val);
201 static uint32_t pmac_ide_readb (void *opaque,target_phys_addr_t addr)
204 MACIOIDEState *d = opaque;
206 addr = (addr & 0xFFF) >> 4;
209 retval = ide_ioport_read(&d->bus, addr);
213 retval = ide_status_read(&d->bus, 0);
222 static void pmac_ide_writew (void *opaque,
223 target_phys_addr_t addr, uint32_t val)
225 MACIOIDEState *d = opaque;
227 addr = (addr & 0xFFF) >> 4;
230 ide_data_writew(&d->bus, 0, val);
234 static uint32_t pmac_ide_readw (void *opaque,target_phys_addr_t addr)
237 MACIOIDEState *d = opaque;
239 addr = (addr & 0xFFF) >> 4;
241 retval = ide_data_readw(&d->bus, 0);
245 retval = bswap16(retval);
249 static void pmac_ide_writel (void *opaque,
250 target_phys_addr_t addr, uint32_t val)
252 MACIOIDEState *d = opaque;
254 addr = (addr & 0xFFF) >> 4;
257 ide_data_writel(&d->bus, 0, val);
261 static uint32_t pmac_ide_readl (void *opaque,target_phys_addr_t addr)
264 MACIOIDEState *d = opaque;
266 addr = (addr & 0xFFF) >> 4;
268 retval = ide_data_readl(&d->bus, 0);
272 retval = bswap32(retval);
276 static CPUWriteMemoryFunc * const pmac_ide_write[] = {
282 static CPUReadMemoryFunc * const pmac_ide_read[] = {
288 static const VMStateDescription vmstate_pmac = {
291 .minimum_version_id = 0,
292 .minimum_version_id_old = 0,
293 .fields = (VMStateField []) {
294 VMSTATE_IDE_BUS(bus, MACIOIDEState),
295 VMSTATE_IDE_DRIVES(bus.ifs, MACIOIDEState),
296 VMSTATE_END_OF_LIST()
300 static void pmac_ide_reset(void *opaque)
302 MACIOIDEState *d = opaque;
304 ide_bus_reset(&d->bus);
307 /* hd_table must contain 4 block drivers */
308 /* PowerMac uses memory mapped registers, not I/O. Return the memory
309 I/O index to access the ide. */
310 int pmac_ide_init (DriveInfo **hd_table, qemu_irq irq,
311 void *dbdma, int channel, qemu_irq dma_irq)
316 d = qemu_mallocz(sizeof(MACIOIDEState));
317 ide_init2_with_non_qdev_drives(&d->bus, hd_table[0], hd_table[1], irq);
320 DBDMA_register_channel(dbdma, channel, dma_irq, pmac_ide_transfer, pmac_ide_flush, d);
322 pmac_ide_memory = cpu_register_io_memory(pmac_ide_read,
324 vmstate_register(NULL, 0, &vmstate_pmac, d);
325 qemu_register_reset(pmac_ide_reset, d);
327 return pmac_ide_memory;