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qemu/hw/ide/cmd646.c

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/*
* QEMU IDE Emulation: PCI cmd646 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 "block_int.h"
#include "sysemu.h"
#include "dma.h"
#include <hw/ide/pci.h>
/* CMD646 specific */
#define MRDMODE 0x71
#define MRDMODE_INTR_CH0 0x04
#define MRDMODE_INTR_CH1 0x08
#define MRDMODE_BLK_CH0 0x10
#define MRDMODE_BLK_CH1 0x20
#define UDIDETCR0 0x73
#define UDIDETCR1 0x7B
static void cmd646_update_irq(PCIIDEState *d);
static void ide_map(PCIDevice *pci_dev, int region_num,
uint32_t addr, uint32_t size, int type)
{
PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);
IDEBus *bus;
if (region_num <= 3) {
bus = &d->bus[(region_num >> 1)];
if (region_num & 1) {
register_ioport_read(addr + 2, 1, 1, ide_status_read, bus);
register_ioport_write(addr + 2, 1, 1, ide_cmd_write, bus);
} else {
register_ioport_write(addr, 8, 1, ide_ioport_write, bus);
register_ioport_read(addr, 8, 1, ide_ioport_read, bus);
/* data ports */
register_ioport_write(addr, 2, 2, ide_data_writew, bus);
register_ioport_read(addr, 2, 2, ide_data_readw, bus);
register_ioport_write(addr, 4, 4, ide_data_writel, bus);
register_ioport_read(addr, 4, 4, ide_data_readl, bus);
}
}
}
static PCIIDEState *pci_from_bm(BMDMAState *bm)
{
if (bm->unit == 0) {
return container_of(bm, PCIIDEState, bmdma[0]);
} else {
return container_of(bm, PCIIDEState, bmdma[1]);
}
}
static uint32_t bmdma_readb(void *opaque, uint32_t addr)
{
BMDMAState *bm = opaque;
PCIIDEState *pci_dev = pci_from_bm(bm);
uint32_t val;
switch(addr & 3) {
case 0:
val = bm->cmd;
break;
case 1:
val = pci_dev->dev.config[MRDMODE];
break;
case 2:
val = bm->status;
break;
case 3:
if (bm->unit == 0) {
val = pci_dev->dev.config[UDIDETCR0];
} else {
val = pci_dev->dev.config[UDIDETCR1];
}
break;
default:
val = 0xff;
break;
}
#ifdef DEBUG_IDE
printf("bmdma: readb 0x%02x : 0x%02x\n", addr, val);
#endif
return val;
}
static void bmdma_writeb(void *opaque, uint32_t addr, uint32_t val)
{
BMDMAState *bm = opaque;
PCIIDEState *pci_dev = pci_from_bm(bm);
#ifdef DEBUG_IDE
printf("bmdma: writeb 0x%02x : 0x%02x\n", addr, val);
#endif
switch(addr & 3) {
case 1:
pci_dev->dev.config[MRDMODE] =
(pci_dev->dev.config[MRDMODE] & ~0x30) | (val & 0x30);
cmd646_update_irq(pci_dev);
break;
case 2:
bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06);
break;
case 3:
if (bm->unit == 0)
pci_dev->dev.config[UDIDETCR0] = val;
else
pci_dev->dev.config[UDIDETCR1] = val;
break;
}
}
static void bmdma_map(PCIDevice *pci_dev, int region_num,
uint32_t addr, uint32_t size, int type)
{
PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);
int i;
for(i = 0;i < 2; i++) {
BMDMAState *bm = &d->bmdma[i];
d->bus[i].bmdma = bm;
bm->bus = d->bus+i;
qemu_add_vm_change_state_handler(ide_dma_restart_cb, bm);
register_ioport_write(addr, 1, 1, bmdma_cmd_writeb, bm);
register_ioport_write(addr + 1, 3, 1, bmdma_writeb, bm);
register_ioport_read(addr, 4, 1, bmdma_readb, bm);
register_ioport_write(addr + 4, 4, 1, bmdma_addr_writeb, bm);
register_ioport_read(addr + 4, 4, 1, bmdma_addr_readb, bm);
register_ioport_write(addr + 4, 4, 2, bmdma_addr_writew, bm);
register_ioport_read(addr + 4, 4, 2, bmdma_addr_readw, bm);
register_ioport_write(addr + 4, 4, 4, bmdma_addr_writel, bm);
register_ioport_read(addr + 4, 4, 4, bmdma_addr_readl, bm);
addr += 8;
}
}
/* XXX: call it also when the MRDMODE is changed from the PCI config
registers */
static void cmd646_update_irq(PCIIDEState *d)
{
int pci_level;
pci_level = ((d->dev.config[MRDMODE] & MRDMODE_INTR_CH0) &&
!(d->dev.config[MRDMODE] & MRDMODE_BLK_CH0)) ||
((d->dev.config[MRDMODE] & MRDMODE_INTR_CH1) &&
!(d->dev.config[MRDMODE] & MRDMODE_BLK_CH1));
qemu_set_irq(d->dev.irq[0], pci_level);
}
/* the PCI irq level is the logical OR of the two channels */
static void cmd646_set_irq(void *opaque, int channel, int level)
{
PCIIDEState *d = opaque;
int irq_mask;
irq_mask = MRDMODE_INTR_CH0 << channel;
if (level)
d->dev.config[MRDMODE] |= irq_mask;
else
d->dev.config[MRDMODE] &= ~irq_mask;
cmd646_update_irq(d);
}
static void cmd646_reset(void *opaque)
{
PCIIDEState *d = opaque;
unsigned int i;
for (i = 0; i < 2; i++)
ide_dma_cancel(&d->bmdma[i]);
}
/* CMD646 PCI IDE controller */
static int pci_cmd646_ide_initfn(PCIDevice *dev)
{
PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
uint8_t *pci_conf = d->dev.config;
qemu_irq *irq;
pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_CMD);
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_CMD_646);
pci_conf[0x08] = 0x07; // IDE controller revision
pci_conf[0x09] = 0x8f;
pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_IDE);
pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
pci_conf[0x51] = 0x04; // enable IDE0
if (d->secondary) {
/* XXX: if not enabled, really disable the seconday IDE controller */
pci_conf[0x51] |= 0x08; /* enable IDE1 */
}
pci_register_bar(dev, 0, 0x8, PCI_ADDRESS_SPACE_IO, ide_map);
pci_register_bar(dev, 1, 0x4, PCI_ADDRESS_SPACE_IO, ide_map);
pci_register_bar(dev, 2, 0x8, PCI_ADDRESS_SPACE_IO, ide_map);
pci_register_bar(dev, 3, 0x4, PCI_ADDRESS_SPACE_IO, ide_map);
pci_register_bar(dev, 4, 0x10, PCI_ADDRESS_SPACE_IO, bmdma_map);
pci_conf[0x3d] = 0x01; // interrupt on pin 1
irq = qemu_allocate_irqs(cmd646_set_irq, d, 2);
ide_bus_new(&d->bus[0], &d->dev.qdev);
ide_bus_new(&d->bus[1], &d->dev.qdev);
ide_init2(&d->bus[0], NULL, NULL, irq[0]);
ide_init2(&d->bus[1], NULL, NULL, irq[1]);
vmstate_register(0, &vmstate_ide_pci, d);
qemu_register_reset(cmd646_reset, d);
cmd646_reset(d);
return 0;
}
void pci_cmd646_ide_init(PCIBus *bus, DriveInfo **hd_table,
int secondary_ide_enabled)
{
PCIDevice *dev;
dev = pci_create(bus, -1, "CMD646 IDE");
qdev_prop_set_uint32(&dev->qdev, "secondary", secondary_ide_enabled);
qdev_init_nofail(&dev->qdev);
pci_ide_create_devs(dev, hd_table);
}
static PCIDeviceInfo cmd646_ide_info[] = {
{
.qdev.name = "CMD646 IDE",
.qdev.size = sizeof(PCIIDEState),
.init = pci_cmd646_ide_initfn,
.qdev.props = (Property[]) {
DEFINE_PROP_UINT32("secondary", PCIIDEState, secondary, 0),
DEFINE_PROP_END_OF_LIST(),
},
},{
/* end of list */
}
};
static void cmd646_ide_register(void)
{
pci_qdev_register_many(cmd646_ide_info);
}
device_init(cmd646_ide_register);
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