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>
31 #include <hw/ide/internal.h>
33 /***********************************************************/
34 /* MacIO based PowerPC IDE */
36 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);
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)
75 /* launch next transfer */
77 s->io_buffer_size = io->len;
79 qemu_sglist_init(&s->sg, io->len / MACIO_PAGE_SIZE + 1);
80 qemu_sglist_add(&s->sg, io->addr, io->len);
84 m->aiocb = dma_bdrv_read(s->bs, &s->sg,
85 (int64_t)(s->lba << 2) + (s->io_buffer_index >> 9),
86 pmac_ide_atapi_transfer_cb, io);
90 bdrv_acct_done(s->bs, &s->acct);
95 static void pmac_ide_transfer_cb(void *opaque, int ret)
97 DBDMA_io *io = opaque;
98 MACIOIDEState *m = io->opaque;
99 IDEState *s = idebus_active_if(&m->bus);
105 qemu_sglist_destroy(&s->sg);
110 sector_num = ide_get_sector(s);
111 if (s->io_buffer_size > 0) {
113 qemu_sglist_destroy(&s->sg);
114 n = (s->io_buffer_size + 0x1ff) >> 9;
116 ide_set_sector(s, sector_num);
120 /* end of transfer ? */
121 if (s->nsector == 0) {
122 s->status = READY_STAT | SEEK_STAT;
131 /* launch next transfer */
133 s->io_buffer_index = 0;
134 s->io_buffer_size = io->len;
136 qemu_sglist_init(&s->sg, io->len / MACIO_PAGE_SIZE + 1);
137 qemu_sglist_add(&s->sg, io->addr, io->len);
141 switch (s->dma_cmd) {
143 m->aiocb = dma_bdrv_read(s->bs, &s->sg, sector_num,
144 pmac_ide_transfer_cb, io);
147 m->aiocb = dma_bdrv_write(s->bs, &s->sg, sector_num,
148 pmac_ide_transfer_cb, io);
151 m->aiocb = dma_bdrv_io(s->bs, &s->sg, sector_num,
152 ide_issue_trim, pmac_ide_transfer_cb, s, true);
158 if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
159 bdrv_acct_done(s->bs, &s->acct);
164 static void pmac_ide_transfer(DBDMA_io *io)
166 MACIOIDEState *m = io->opaque;
167 IDEState *s = idebus_active_if(&m->bus);
169 s->io_buffer_size = 0;
170 if (s->drive_kind == IDE_CD) {
171 bdrv_acct_start(s->bs, &s->acct, io->len, BDRV_ACCT_READ);
172 pmac_ide_atapi_transfer_cb(io, 0);
176 switch (s->dma_cmd) {
178 bdrv_acct_start(s->bs, &s->acct, io->len, BDRV_ACCT_READ);
181 bdrv_acct_start(s->bs, &s->acct, io->len, BDRV_ACCT_WRITE);
187 pmac_ide_transfer_cb(io, 0);
190 static void pmac_ide_flush(DBDMA_io *io)
192 MACIOIDEState *m = io->opaque;
199 /* PowerMac IDE memory IO */
200 static void pmac_ide_writeb (void *opaque,
201 target_phys_addr_t addr, uint32_t val)
203 MACIOIDEState *d = opaque;
205 addr = (addr & 0xFFF) >> 4;
208 ide_ioport_write(&d->bus, addr, val);
212 ide_cmd_write(&d->bus, 0, val);
219 static uint32_t pmac_ide_readb (void *opaque,target_phys_addr_t addr)
222 MACIOIDEState *d = opaque;
224 addr = (addr & 0xFFF) >> 4;
227 retval = ide_ioport_read(&d->bus, addr);
231 retval = ide_status_read(&d->bus, 0);
240 static void pmac_ide_writew (void *opaque,
241 target_phys_addr_t addr, uint32_t val)
243 MACIOIDEState *d = opaque;
245 addr = (addr & 0xFFF) >> 4;
248 ide_data_writew(&d->bus, 0, val);
252 static uint32_t pmac_ide_readw (void *opaque,target_phys_addr_t addr)
255 MACIOIDEState *d = opaque;
257 addr = (addr & 0xFFF) >> 4;
259 retval = ide_data_readw(&d->bus, 0);
263 retval = bswap16(retval);
267 static void pmac_ide_writel (void *opaque,
268 target_phys_addr_t addr, uint32_t val)
270 MACIOIDEState *d = opaque;
272 addr = (addr & 0xFFF) >> 4;
275 ide_data_writel(&d->bus, 0, val);
279 static uint32_t pmac_ide_readl (void *opaque,target_phys_addr_t addr)
282 MACIOIDEState *d = opaque;
284 addr = (addr & 0xFFF) >> 4;
286 retval = ide_data_readl(&d->bus, 0);
290 retval = bswap32(retval);
294 static MemoryRegionOps pmac_ide_ops = {
307 .endianness = DEVICE_NATIVE_ENDIAN,
310 static const VMStateDescription vmstate_pmac = {
313 .minimum_version_id = 0,
314 .minimum_version_id_old = 0,
315 .fields = (VMStateField []) {
316 VMSTATE_IDE_BUS(bus, MACIOIDEState),
317 VMSTATE_IDE_DRIVES(bus.ifs, MACIOIDEState),
318 VMSTATE_END_OF_LIST()
322 static void pmac_ide_reset(void *opaque)
324 MACIOIDEState *d = opaque;
326 ide_bus_reset(&d->bus);
329 /* hd_table must contain 4 block drivers */
330 /* PowerMac uses memory mapped registers, not I/O. Return the memory
331 I/O index to access the ide. */
332 MemoryRegion *pmac_ide_init (DriveInfo **hd_table, qemu_irq irq,
333 void *dbdma, int channel, qemu_irq dma_irq)
337 d = g_malloc0(sizeof(MACIOIDEState));
338 ide_init2_with_non_qdev_drives(&d->bus, hd_table[0], hd_table[1], irq);
341 DBDMA_register_channel(dbdma, channel, dma_irq, pmac_ide_transfer, pmac_ide_flush, d);
343 memory_region_init_io(&d->mem, &pmac_ide_ops, d, "pmac-ide", 0x1000);
344 vmstate_register(NULL, 0, &vmstate_pmac, d);
345 qemu_register_reset(pmac_ide_reset, d);