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qemu/hw/ide/piix.c

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/*
* QEMU IDE Emulation: PCI PIIX3/4 support.
*
* Copyright (c) 2003 Fabrice Bellard
* Copyright (c) 2006 Openedhand Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <hw/hw.h>
#include <hw/pc.h>
#include <hw/pci.h>
#include <hw/isa.h>
#include "block.h"
#include "sysemu.h"
#include "dma.h"
#include <hw/ide/pci.h>
static uint64_t bmdma_read(void *opaque, target_phys_addr_t addr, unsigned size)
{
BMDMAState *bm = opaque;
uint32_t val;
if (size != 1) {
return ((uint64_t)1 << (size * 8)) - 1;
}
switch(addr & 3) {
case 0:
val = bm->cmd;
break;
case 2:
val = bm->status;
break;
default:
val = 0xff;
break;
}
#ifdef DEBUG_IDE
printf("bmdma: readb 0x%02x : 0x%02x\n", (uint8_t)addr, val);
#endif
return val;
}
static void bmdma_write(void *opaque, target_phys_addr_t addr,
uint64_t val, unsigned size)
{
BMDMAState *bm = opaque;
if (size != 1) {
return;
}
#ifdef DEBUG_IDE
printf("bmdma: writeb 0x%02x : 0x%02x\n", (uint8_t)addr, (uint8_t)val);
#endif
switch(addr & 3) {
case 0:
return bmdma_cmd_writeb(bm, val);
case 2:
bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06);
break;
}
}
static const MemoryRegionOps piix_bmdma_ops = {
.read = bmdma_read,
.write = bmdma_write,
};
static void bmdma_setup_bar(PCIIDEState *d)
{
int i;
memory_region_init(&d->bmdma_bar, "piix-bmdma-container", 16);
for(i = 0;i < 2; i++) {
BMDMAState *bm = &d->bmdma[i];
memory_region_init_io(&bm->extra_io, &piix_bmdma_ops, bm,
"piix-bmdma", 4);
memory_region_add_subregion(&d->bmdma_bar, i * 8, &bm->extra_io);
memory_region_init_io(&bm->addr_ioport, &bmdma_addr_ioport_ops, bm,
"bmdma", 4);
memory_region_add_subregion(&d->bmdma_bar, i * 8 + 4, &bm->addr_ioport);
}
}
static void piix3_reset(void *opaque)
{
PCIIDEState *d = opaque;
uint8_t *pci_conf = d->dev.config;
int i;
for (i = 0; i < 2; i++) {
ide_bus_reset(&d->bus[i]);
}
/* TODO: this is the default. do not override. */
pci_conf[PCI_COMMAND] = 0x00;
/* TODO: this is the default. do not override. */
pci_conf[PCI_COMMAND + 1] = 0x00;
/* TODO: use pci_set_word */
pci_conf[PCI_STATUS] = PCI_STATUS_FAST_BACK;
pci_conf[PCI_STATUS + 1] = PCI_STATUS_DEVSEL_MEDIUM >> 8;
pci_conf[0x20] = 0x01; /* BMIBA: 20-23h */
}
static void pci_piix_init_ports(PCIIDEState *d) {
static const struct {
int iobase;
int iobase2;
int isairq;
} port_info[] = {
{0x1f0, 0x3f6, 14},
{0x170, 0x376, 15},
};
int i;
for (i = 0; i < 2; i++) {
ide_bus_new(&d->bus[i], &d->dev.qdev, i);
ide_init_ioport(&d->bus[i], NULL, port_info[i].iobase,
port_info[i].iobase2);
ide_init2(&d->bus[i], isa_get_irq(NULL, port_info[i].isairq));
bmdma_init(&d->bus[i], &d->bmdma[i], d);
d->bmdma[i].bus = &d->bus[i];
qemu_add_vm_change_state_handler(d->bus[i].dma->ops->restart_cb,
&d->bmdma[i].dma);
}
}
static int pci_piix_ide_initfn(PCIDevice *dev)
{
PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
uint8_t *pci_conf = d->dev.config;
pci_conf[PCI_CLASS_PROG] = 0x80; // legacy ATA mode
qemu_register_reset(piix3_reset, d);
bmdma_setup_bar(d);
pci_register_bar(&d->dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
vmstate_register(&d->dev.qdev, 0, &vmstate_ide_pci, d);
pci_piix_init_ports(d);
return 0;
}
static int pci_piix3_xen_ide_unplug(DeviceState *dev)
{
PCIDevice *pci_dev;
PCIIDEState *pci_ide;
DriveInfo *di;
int i = 0;
pci_dev = DO_UPCAST(PCIDevice, qdev, dev);
pci_ide = DO_UPCAST(PCIIDEState, dev, pci_dev);
for (; i < 3; i++) {
di = drive_get_by_index(IF_IDE, i);
if (di != NULL && !di->media_cd) {
DeviceState *ds = bdrv_get_attached_dev(di->bdrv);
if (ds) {
bdrv_detach_dev(di->bdrv, ds);
}
bdrv_close(di->bdrv);
pci_ide->bus[di->bus].ifs[di->unit].bs = NULL;
drive_put_ref(di);
}
}
qdev_reset_all(&(pci_ide->dev.qdev));
return 0;
}
PCIDevice *pci_piix3_xen_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn)
{
PCIDevice *dev;
dev = pci_create_simple(bus, devfn, "piix3-ide-xen");
pci_ide_create_devs(dev, hd_table);
return dev;
}
static int pci_piix_ide_exitfn(PCIDevice *dev)
{
PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
unsigned i;
for (i = 0; i < 2; ++i) {
memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].extra_io);
memory_region_destroy(&d->bmdma[i].extra_io);
memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].addr_ioport);
memory_region_destroy(&d->bmdma[i].addr_ioport);
}
memory_region_destroy(&d->bmdma_bar);
return 0;
}
/* hd_table must contain 4 block drivers */
/* NOTE: for the PIIX3, the IRQs and IOports are hardcoded */
PCIDevice *pci_piix3_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn)
{
PCIDevice *dev;
dev = pci_create_simple(bus, devfn, "piix3-ide");
pci_ide_create_devs(dev, hd_table);
return dev;
}
/* hd_table must contain 4 block drivers */
/* NOTE: for the PIIX4, the IRQs and IOports are hardcoded */
PCIDevice *pci_piix4_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn)
{
PCIDevice *dev;
dev = pci_create_simple(bus, devfn, "piix4-ide");
pci_ide_create_devs(dev, hd_table);
return dev;
}
static void piix3_ide_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->no_hotplug = 1;
k->init = pci_piix_ide_initfn;
k->exit = pci_piix_ide_exitfn;
k->vendor_id = PCI_VENDOR_ID_INTEL;
k->device_id = PCI_DEVICE_ID_INTEL_82371SB_1;
k->class_id = PCI_CLASS_STORAGE_IDE;
dc->no_user = 1;
}
static TypeInfo piix3_ide_info = {
.name = "piix3-ide",
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(PCIIDEState),
.class_init = piix3_ide_class_init,
};
static void piix3_ide_xen_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->init = pci_piix_ide_initfn;
k->vendor_id = PCI_VENDOR_ID_INTEL;
k->device_id = PCI_DEVICE_ID_INTEL_82371SB_1;
k->class_id = PCI_CLASS_STORAGE_IDE;
dc->no_user = 1;
dc->unplug = pci_piix3_xen_ide_unplug;
}
static TypeInfo piix3_ide_xen_info = {
.name = "piix3-ide-xen",
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(PCIIDEState),
.class_init = piix3_ide_xen_class_init,
};
static void piix4_ide_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->no_hotplug = 1;
k->init = pci_piix_ide_initfn;
k->exit = pci_piix_ide_exitfn;
k->vendor_id = PCI_VENDOR_ID_INTEL;
k->device_id = PCI_DEVICE_ID_INTEL_82371AB;
k->class_id = PCI_CLASS_STORAGE_IDE;
dc->no_user = 1;
}
static TypeInfo piix4_ide_info = {
.name = "piix4-ide",
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(PCIIDEState),
.class_init = piix4_ide_class_init,
};
static void piix_ide_register_types(void)
{
type_register_static(&piix3_ide_info);
type_register_static(&piix3_ide_xen_info);
type_register_static(&piix4_ide_info);
}
type_init(piix_ide_register_types)
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