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 static void pmac_ide_atapi_transfer_cb(void *opaque, int ret)
45 DBDMA_io *io = opaque;
46 MACIOIDEState *m = io->opaque;
47 IDEState *s = idebus_active_if(&m->bus);
51 qemu_sglist_destroy(&s->sg);
52 ide_atapi_io_error(s, ret);
57 if (s->io_buffer_size > 0) {
59 qemu_sglist_destroy(&s->sg);
61 s->packet_transfer_size -= s->io_buffer_size;
63 s->io_buffer_index += s->io_buffer_size;
64 s->lba += s->io_buffer_index >> 11;
65 s->io_buffer_index &= 0x7ff;
68 if (s->packet_transfer_size <= 0)
76 /* launch next transfer */
78 s->io_buffer_size = io->len;
80 qemu_sglist_init(&s->sg, io->len / TARGET_PAGE_SIZE + 1);
81 qemu_sglist_add(&s->sg, io->addr, io->len);
85 m->aiocb = dma_bdrv_read(s->bs, &s->sg,
86 (int64_t)(s->lba << 2) + (s->io_buffer_index >> 9),
87 pmac_ide_atapi_transfer_cb, io);
89 qemu_sglist_destroy(&s->sg);
90 /* Note: media not present is the most likely case */
91 ide_atapi_cmd_error(s, SENSE_NOT_READY,
92 ASC_MEDIUM_NOT_PRESENT);
98 static void pmac_ide_transfer_cb(void *opaque, int ret)
100 DBDMA_io *io = opaque;
101 MACIOIDEState *m = io->opaque;
102 IDEState *s = idebus_active_if(&m->bus);
108 qemu_sglist_destroy(&s->sg);
114 sector_num = ide_get_sector(s);
115 if (s->io_buffer_size > 0) {
117 qemu_sglist_destroy(&s->sg);
118 n = (s->io_buffer_size + 0x1ff) >> 9;
120 ide_set_sector(s, sector_num);
124 /* end of transfer ? */
125 if (s->nsector == 0) {
126 s->status = READY_STAT | SEEK_STAT;
137 /* launch next transfer */
139 s->io_buffer_index = 0;
140 s->io_buffer_size = io->len;
142 qemu_sglist_init(&s->sg, io->len / TARGET_PAGE_SIZE + 1);
143 qemu_sglist_add(&s->sg, io->addr, io->len);
148 m->aiocb = dma_bdrv_read(s->bs, &s->sg, sector_num,
149 pmac_ide_transfer_cb, io);
151 m->aiocb = dma_bdrv_write(s->bs, &s->sg, sector_num,
152 pmac_ide_transfer_cb, io);
154 pmac_ide_transfer_cb(io, -1);
157 static void pmac_ide_transfer(DBDMA_io *io)
159 MACIOIDEState *m = io->opaque;
160 IDEState *s = idebus_active_if(&m->bus);
162 s->io_buffer_size = 0;
164 pmac_ide_atapi_transfer_cb(io, 0);
168 pmac_ide_transfer_cb(io, 0);
171 static void pmac_ide_flush(DBDMA_io *io)
173 MACIOIDEState *m = io->opaque;
179 /* PowerMac IDE memory IO */
180 static void pmac_ide_writeb (void *opaque,
181 target_phys_addr_t addr, uint32_t val)
183 MACIOIDEState *d = opaque;
185 addr = (addr & 0xFFF) >> 4;
188 ide_ioport_write(&d->bus, addr, val);
192 ide_cmd_write(&d->bus, 0, val);
199 static uint32_t pmac_ide_readb (void *opaque,target_phys_addr_t addr)
202 MACIOIDEState *d = opaque;
204 addr = (addr & 0xFFF) >> 4;
207 retval = ide_ioport_read(&d->bus, addr);
211 retval = ide_status_read(&d->bus, 0);
220 static void pmac_ide_writew (void *opaque,
221 target_phys_addr_t addr, uint32_t val)
223 MACIOIDEState *d = opaque;
225 addr = (addr & 0xFFF) >> 4;
226 #ifdef TARGET_WORDS_BIGENDIAN
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 #ifdef TARGET_WORDS_BIGENDIAN
246 retval = bswap16(retval);
251 static void pmac_ide_writel (void *opaque,
252 target_phys_addr_t addr, uint32_t val)
254 MACIOIDEState *d = opaque;
256 addr = (addr & 0xFFF) >> 4;
257 #ifdef TARGET_WORDS_BIGENDIAN
261 ide_data_writel(&d->bus, 0, val);
265 static uint32_t pmac_ide_readl (void *opaque,target_phys_addr_t addr)
268 MACIOIDEState *d = opaque;
270 addr = (addr & 0xFFF) >> 4;
272 retval = ide_data_readl(&d->bus, 0);
276 #ifdef TARGET_WORDS_BIGENDIAN
277 retval = bswap32(retval);
282 static CPUWriteMemoryFunc * const pmac_ide_write[] = {
288 static CPUReadMemoryFunc * const pmac_ide_read[] = {
294 static const VMStateDescription vmstate_pmac = {
297 .minimum_version_id = 0,
298 .minimum_version_id_old = 0,
299 .fields = (VMStateField []) {
300 VMSTATE_IDE_BUS(bus, MACIOIDEState),
301 VMSTATE_IDE_DRIVES(bus.ifs, MACIOIDEState),
302 VMSTATE_END_OF_LIST()
306 static void pmac_ide_reset(void *opaque)
308 MACIOIDEState *d = opaque;
310 ide_bus_reset(&d->bus);
313 /* hd_table must contain 4 block drivers */
314 /* PowerMac uses memory mapped registers, not I/O. Return the memory
315 I/O index to access the ide. */
316 int pmac_ide_init (DriveInfo **hd_table, qemu_irq irq,
317 void *dbdma, int channel, qemu_irq dma_irq)
322 d = qemu_mallocz(sizeof(MACIOIDEState));
323 ide_init2(&d->bus, hd_table[0], hd_table[1], irq);
326 DBDMA_register_channel(dbdma, channel, dma_irq, pmac_ide_transfer, pmac_ide_flush, d);
328 pmac_ide_memory = cpu_register_io_memory(pmac_ide_read,
330 vmstate_register(0, &vmstate_pmac, d);
331 qemu_register_reset(pmac_ide_reset, d);
333 return pmac_ide_memory;