vitalif
/
mirror_qemu
mirror of https://github.com/proxmox/mirror_qemu
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
mirror_qemu/hw/ide/via.c

281 lines
8.5 KiB
C
Raw Permalink Blame History

/*
* QEMU IDE Emulation: PCI VIA82C686B support.
*
* Copyright (c) 2003 Fabrice Bellard
* Copyright (c) 2006 Openedhand Ltd.
* Copyright (c) 2010 Huacai Chen <zltjiangshi@gmail.com>
*
* 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 "qemu/osdep.h"
#include "hw/pci/pci.h"
#include "migration/vmstate.h"
#include "qemu/module.h"
#include "qemu/range.h"
#include "sysemu/dma.h"
#include "hw/isa/vt82c686.h"
#include "hw/ide/pci.h"
#include "hw/irq.h"
#include "ide-internal.h"
#include "trace.h"
static uint64_t bmdma_read(void *opaque, hwaddr 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;
}
trace_bmdma_read_via(addr, val);
return val;
}
static void bmdma_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
BMDMAState *bm = opaque;
if (size != 1) {
return;
}
trace_bmdma_write_via(addr, val);
switch (addr & 3) {
case 0:
bmdma_cmd_writeb(bm, val);
break;
case 2:
bmdma_status_writeb(bm, val);
break;
default:;
}
}
static const MemoryRegionOps via_bmdma_ops = {
.read = bmdma_read,
.write = bmdma_write,
};
static void bmdma_setup_bar(PCIIDEState *d)
{
int i;
memory_region_init(&d->bmdma_bar, OBJECT(d), "via-bmdma-container", 16);
for (i = 0; i < ARRAY_SIZE(d->bmdma); i++) {
BMDMAState *bm = &d->bmdma[i];
memory_region_init_io(&bm->extra_io, OBJECT(d), &via_bmdma_ops, bm,
"via-bmdma", 4);
memory_region_add_subregion(&d->bmdma_bar, i * 8, &bm->extra_io);
memory_region_init_io(&bm->addr_ioport, OBJECT(d),
&bmdma_addr_ioport_ops, bm, "bmdma", 4);
memory_region_add_subregion(&d->bmdma_bar, i * 8 + 4, &bm->addr_ioport);
}
}
static void via_ide_set_irq(void *opaque, int n, int level)
{
PCIIDEState *s = opaque;
PCIDevice *d = PCI_DEVICE(s);
if (level) {
d->config[0x70 + n * 8] |= 0x80;
} else {
d->config[0x70 + n * 8] &= ~0x80;
}
qemu_set_irq(s->isa_irq[n], level);
}
static void via_ide_reset(DeviceState *dev)
{
PCIIDEState *d = PCI_IDE(dev);
PCIDevice *pd = PCI_DEVICE(dev);
uint8_t *pci_conf = pd->config;
int i;
for (i = 0; i < ARRAY_SIZE(d->bus); i++) {
ide_bus_reset(&d->bus[i]);
}
pci_config_set_prog_interface(pci_conf, 0x8a); /* legacy mode */
pci_ide_update_mode(d);
pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_WAIT);
pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK |
PCI_STATUS_DEVSEL_MEDIUM);
pci_set_byte(pci_conf + PCI_INTERRUPT_LINE, 0xe);
/* IDE chip enable, IDE configuration 1/2, IDE FIFO Configuration*/
pci_set_long(pci_conf + 0x40, 0x0a090600);
/* IDE misc configuration 1/2/3 */
pci_set_long(pci_conf + 0x44, 0x00c00068);
/* IDE Timing control */
pci_set_long(pci_conf + 0x48, 0xa8a8a8a8);
/* IDE Address Setup Time */
pci_set_long(pci_conf + 0x4c, 0x000000ff);
/* UltraDMA Extended Timing Control*/
pci_set_long(pci_conf + 0x50, 0x07070707);
/* UltraDMA FIFO Control */
pci_set_long(pci_conf + 0x54, 0x00000004);
/* IDE primary sector size */
pci_set_long(pci_conf + 0x60, 0x00000200);
/* IDE secondary sector size */
pci_set_long(pci_conf + 0x68, 0x00000200);
/* PCI PM Block */
pci_set_long(pci_conf + 0xc0, 0x00020001);
}
static uint32_t via_ide_cfg_read(PCIDevice *pd, uint32_t addr, int len)
{
uint32_t val = pci_default_read_config(pd, addr, len);
uint8_t mode = pd->config[PCI_CLASS_PROG];
if ((mode & 0xf) == 0xa) {
if (ranges_overlap(addr, len, PCI_BASE_ADDRESS_0, 16)) {
/* BARs 0-3 always read back zero in legacy mode */
for (int i = addr; i < addr + len; i++) {
if (i >= PCI_BASE_ADDRESS_0 && i < PCI_BASE_ADDRESS_0 + 16) {
val &= ~(0xffULL << ((i - addr) << 3));
}
}
}
if (addr == PCI_BASE_ADDRESS_4 && val == PCI_BASE_ADDRESS_SPACE_IO) {
/* BAR4 default value if unset */
val = 0xcc00 | PCI_BASE_ADDRESS_SPACE_IO;
}
}
return val;
}
static void via_ide_cfg_write(PCIDevice *pd, uint32_t addr,
uint32_t val, int len)
{
PCIIDEState *d = PCI_IDE(pd);
pci_default_write_config(pd, addr, val, len);
if (range_covers_byte(addr, len, PCI_CLASS_PROG)) {
pci_ide_update_mode(d);
}
}
static void via_ide_realize(PCIDevice *dev, Error **errp)
{
PCIIDEState *d = PCI_IDE(dev);
DeviceState *ds = DEVICE(dev);
uint8_t *pci_conf = dev->config;
int i;
pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);
dev->wmask[PCI_INTERRUPT_LINE] = 0;
dev->wmask[PCI_CLASS_PROG] = 5;
memory_region_init_io(&d->data_bar[0], OBJECT(d), &pci_ide_data_le_ops,
&d->bus[0], "via-ide0-data", 8);
pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->data_bar[0]);
memory_region_init_io(&d->cmd_bar[0], OBJECT(d), &pci_ide_cmd_le_ops,
&d->bus[0], "via-ide0-cmd", 4);
pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd_bar[0]);
memory_region_init_io(&d->data_bar[1], OBJECT(d), &pci_ide_data_le_ops,
&d->bus[1], "via-ide1-data", 8);
pci_register_bar(dev, 2, PCI_BASE_ADDRESS_SPACE_IO, &d->data_bar[1]);
memory_region_init_io(&d->cmd_bar[1], OBJECT(d), &pci_ide_cmd_le_ops,
&d->bus[1], "via-ide1-cmd", 4);
pci_register_bar(dev, 3, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd_bar[1]);
bmdma_setup_bar(d);
pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
qdev_init_gpio_in(ds, via_ide_set_irq, ARRAY_SIZE(d->bus));
for (i = 0; i < ARRAY_SIZE(d->bus); i++) {
ide_bus_init(&d->bus[i], sizeof(d->bus[i]), ds, i, MAX_IDE_DEVS);
ide_bus_init_output_irq(&d->bus[i], qdev_get_gpio_in(ds, i));
bmdma_init(&d->bus[i], &d->bmdma[i], d);
ide_bus_register_restart_cb(&d->bus[i]);
}
}
static void via_ide_exitfn(PCIDevice *dev)
{
PCIIDEState *d = PCI_IDE(dev);
unsigned i;
for (i = 0; i < ARRAY_SIZE(d->bmdma); ++i) {
memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].extra_io);
memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].addr_ioport);
}
}
static void via_ide_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
dc->reset = via_ide_reset;
dc->vmsd = &vmstate_ide_pci;
/* Reason: only works as function of VIA southbridge */
dc->user_creatable = false;
k->config_read = via_ide_cfg_read;
k->config_write = via_ide_cfg_write;
k->realize = via_ide_realize;
k->exit = via_ide_exitfn;
k->vendor_id = PCI_VENDOR_ID_VIA;
k->device_id = PCI_DEVICE_ID_VIA_IDE;
k->revision = 0x06;
k->class_id = PCI_CLASS_STORAGE_IDE;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
}
static const TypeInfo via_ide_info = {
.name = TYPE_VIA_IDE,
.parent = TYPE_PCI_IDE,
.class_init = via_ide_class_init,
};
static void via_ide_register_types(void)
{
type_register_static(&via_ide_info);
}
type_init(via_ide_register_types)
Reference in New Issue View Git Blame Copy Permalink