2 * QEMU IDE Emulation: PCI cmd646 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
30 #include "block_int.h"
34 #include <hw/ide/pci.h>
38 #define MRDMODE_INTR_CH0 0x04
39 #define MRDMODE_INTR_CH1 0x08
40 #define MRDMODE_BLK_CH0 0x10
41 #define MRDMODE_BLK_CH1 0x20
42 #define UDIDETCR0 0x73
43 #define UDIDETCR1 0x7B
45 static void cmd646_update_irq(PCIIDEState *d);
47 static void ide_map(PCIDevice *pci_dev, int region_num,
48 pcibus_t addr, pcibus_t size, int type)
50 PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);
53 if (region_num <= 3) {
54 bus = &d->bus[(region_num >> 1)];
56 register_ioport_read(addr + 2, 1, 1, ide_status_read, bus);
57 register_ioport_write(addr + 2, 1, 1, ide_cmd_write, bus);
59 register_ioport_write(addr, 8, 1, ide_ioport_write, bus);
60 register_ioport_read(addr, 8, 1, ide_ioport_read, bus);
63 register_ioport_write(addr, 2, 2, ide_data_writew, bus);
64 register_ioport_read(addr, 2, 2, ide_data_readw, bus);
65 register_ioport_write(addr, 4, 4, ide_data_writel, bus);
66 register_ioport_read(addr, 4, 4, ide_data_readl, bus);
71 static PCIIDEState *pci_from_bm(BMDMAState *bm)
76 static uint32_t bmdma_readb(void *opaque, uint32_t addr)
78 BMDMAState *bm = opaque;
79 PCIIDEState *pci_dev = pci_from_bm(bm);
87 val = pci_dev->dev.config[MRDMODE];
94 val = pci_dev->dev.config[UDIDETCR0];
96 val = pci_dev->dev.config[UDIDETCR1];
104 printf("bmdma: readb 0x%02x : 0x%02x\n", addr, val);
109 static void bmdma_writeb(void *opaque, uint32_t addr, uint32_t val)
111 BMDMAState *bm = opaque;
112 PCIIDEState *pci_dev = pci_from_bm(bm);
114 printf("bmdma: writeb 0x%02x : 0x%02x\n", addr, val);
118 pci_dev->dev.config[MRDMODE] =
119 (pci_dev->dev.config[MRDMODE] & ~0x30) | (val & 0x30);
120 cmd646_update_irq(pci_dev);
123 bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06);
127 pci_dev->dev.config[UDIDETCR0] = val;
129 pci_dev->dev.config[UDIDETCR1] = val;
134 static void bmdma_map(PCIDevice *pci_dev, int region_num,
135 pcibus_t addr, pcibus_t size, int type)
137 PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);
140 for(i = 0;i < 2; i++) {
141 BMDMAState *bm = &d->bmdma[i];
142 d->bus[i].bmdma = bm;
145 qemu_add_vm_change_state_handler(ide_dma_restart_cb, bm);
147 register_ioport_write(addr, 1, 1, bmdma_cmd_writeb, bm);
149 register_ioport_write(addr + 1, 3, 1, bmdma_writeb, bm);
150 register_ioport_read(addr, 4, 1, bmdma_readb, bm);
152 register_ioport_write(addr + 4, 4, 1, bmdma_addr_writeb, bm);
153 register_ioport_read(addr + 4, 4, 1, bmdma_addr_readb, bm);
154 register_ioport_write(addr + 4, 4, 2, bmdma_addr_writew, bm);
155 register_ioport_read(addr + 4, 4, 2, bmdma_addr_readw, bm);
156 register_ioport_write(addr + 4, 4, 4, bmdma_addr_writel, bm);
157 register_ioport_read(addr + 4, 4, 4, bmdma_addr_readl, bm);
162 /* XXX: call it also when the MRDMODE is changed from the PCI config
164 static void cmd646_update_irq(PCIIDEState *d)
167 pci_level = ((d->dev.config[MRDMODE] & MRDMODE_INTR_CH0) &&
168 !(d->dev.config[MRDMODE] & MRDMODE_BLK_CH0)) ||
169 ((d->dev.config[MRDMODE] & MRDMODE_INTR_CH1) &&
170 !(d->dev.config[MRDMODE] & MRDMODE_BLK_CH1));
171 qemu_set_irq(d->dev.irq[0], pci_level);
174 /* the PCI irq level is the logical OR of the two channels */
175 static void cmd646_set_irq(void *opaque, int channel, int level)
177 PCIIDEState *d = opaque;
180 irq_mask = MRDMODE_INTR_CH0 << channel;
182 d->dev.config[MRDMODE] |= irq_mask;
184 d->dev.config[MRDMODE] &= ~irq_mask;
185 cmd646_update_irq(d);
188 static void cmd646_reset(void *opaque)
190 PCIIDEState *d = opaque;
193 for (i = 0; i < 2; i++) {
194 ide_bus_reset(&d->bus[i]);
195 ide_dma_reset(&d->bmdma[i]);
199 /* CMD646 PCI IDE controller */
200 static int pci_cmd646_ide_initfn(PCIDevice *dev)
202 PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
203 uint8_t *pci_conf = d->dev.config;
206 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_CMD);
207 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_CMD_646);
209 pci_conf[PCI_REVISION_ID] = 0x07; // IDE controller revision
210 pci_conf[PCI_CLASS_PROG] = 0x8f;
212 pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_IDE);
213 pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
215 pci_conf[0x51] = 0x04; // enable IDE0
217 /* XXX: if not enabled, really disable the seconday IDE controller */
218 pci_conf[0x51] |= 0x08; /* enable IDE1 */
221 pci_register_bar(dev, 0, 0x8, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
222 pci_register_bar(dev, 1, 0x4, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
223 pci_register_bar(dev, 2, 0x8, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
224 pci_register_bar(dev, 3, 0x4, PCI_BASE_ADDRESS_SPACE_IO, ide_map);
225 pci_register_bar(dev, 4, 0x10, PCI_BASE_ADDRESS_SPACE_IO, bmdma_map);
227 /* TODO: RST# value should be 0 */
228 pci_conf[PCI_INTERRUPT_PIN] = 0x01; // interrupt on pin 1
230 irq = qemu_allocate_irqs(cmd646_set_irq, d, 2);
231 ide_bus_new(&d->bus[0], &d->dev.qdev);
232 ide_bus_new(&d->bus[1], &d->dev.qdev);
233 ide_init2(&d->bus[0], NULL, NULL, irq[0]);
234 ide_init2(&d->bus[1], NULL, NULL, irq[1]);
236 vmstate_register(0, &vmstate_ide_pci, d);
237 qemu_register_reset(cmd646_reset, d);
241 void pci_cmd646_ide_init(PCIBus *bus, DriveInfo **hd_table,
242 int secondary_ide_enabled)
246 dev = pci_create(bus, -1, "cmd646-ide");
247 qdev_prop_set_uint32(&dev->qdev, "secondary", secondary_ide_enabled);
248 qdev_init_nofail(&dev->qdev);
250 pci_ide_create_devs(dev, hd_table);
253 static PCIDeviceInfo cmd646_ide_info[] = {
255 .qdev.name = "cmd646-ide",
256 .qdev.size = sizeof(PCIIDEState),
257 .init = pci_cmd646_ide_initfn,
258 .qdev.props = (Property[]) {
259 DEFINE_PROP_UINT32("secondary", PCIIDEState, secondary, 0),
260 DEFINE_PROP_END_OF_LIST(),
267 static void cmd646_ide_register(void)
269 pci_qdev_register_many(cmd646_ide_info);
271 device_init(cmd646_ide_register);