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qemu-e2k/hw/ide/sii3112.c
BALATON Zoltan 4eefdf7c1b sii3112: Remove duplicated code and use PCI IDE ops instead 
Parts of the SiI3112 mmio are identical to PCI IDE registers so we can
use the corresponding functions that were factored out into ide/pci.c.
This removes code duplication and simplifies the SiI3112 model which
also helped to spot a copy paste error where reading status of the
2nd channel read the 1st channel instead. This is also fixed here.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 793b6a7934ef2bba26b8d066bec446019efa6c5d.1547166960.git.balaton@eik.bme.hu
Signed-off-by: John Snow <jsnow@redhat.com>
2019-01-25 14:52:11 -05:00

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/*
* QEMU SiI3112A PCI to Serial ATA Controller Emulation
*
* Copyright (C) 2017 BALATON Zoltan <balaton@eik.bme.hu>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
/* For documentation on this and similar cards see:
* http://wiki.osdev.org/User:Quok/Silicon_Image_Datasheets
*/
#include "qemu/osdep.h"
#include "hw/ide/pci.h"
#include "trace.h"
#define TYPE_SII3112_PCI "sii3112"
#define SII3112_PCI(obj) OBJECT_CHECK(SiI3112PCIState, (obj), \
TYPE_SII3112_PCI)
typedef struct SiI3112Regs {
uint32_t confstat;
uint32_t scontrol;
uint16_t sien;
uint8_t swdata;
} SiI3112Regs;
typedef struct SiI3112PCIState {
PCIIDEState i;
MemoryRegion mmio;
SiI3112Regs regs[2];
} SiI3112PCIState;
/* The sii3112_reg_read and sii3112_reg_write functions implement the
* Internal Register Space - BAR5 (section 6.7 of the data sheet).
*/
static uint64_t sii3112_reg_read(void *opaque, hwaddr addr,
unsigned int size)
{
SiI3112PCIState *d = opaque;
uint64_t val = 0;
switch (addr) {
case 0x00:
val = d->i.bmdma[0].cmd;
break;
case 0x01:
val = d->regs[0].swdata;
break;
case 0x02:
val = d->i.bmdma[0].status;
break;
case 0x03:
val = 0;
break;
case 0x04 ... 0x07:
val = bmdma_addr_ioport_ops.read(&d->i.bmdma[0], addr - 4, size);
break;
case 0x08:
val = d->i.bmdma[1].cmd;
break;
case 0x09:
val = d->regs[1].swdata;
break;
case 0x0a:
val = d->i.bmdma[1].status;
break;
case 0x0b:
val = 0;
break;
case 0x0c ... 0x0f:
val = bmdma_addr_ioport_ops.read(&d->i.bmdma[1], addr - 12, size);
break;
case 0x10:
val = d->i.bmdma[0].cmd;
val |= (d->regs[0].confstat & (1UL << 11) ? (1 << 4) : 0); /*SATAINT0*/
val |= (d->regs[1].confstat & (1UL << 11) ? (1 << 6) : 0); /*SATAINT1*/
val |= (d->i.bmdma[1].status & BM_STATUS_INT ? (1 << 14) : 0);
val |= (uint32_t)d->i.bmdma[0].status << 16;
val |= (uint32_t)d->i.bmdma[1].status << 24;
break;
case 0x18:
val = d->i.bmdma[1].cmd;
val |= (d->regs[1].confstat & (1UL << 11) ? (1 << 4) : 0);
val |= (uint32_t)d->i.bmdma[1].status << 16;
break;
case 0x80 ... 0x87:
val = pci_ide_data_le_ops.read(&d->i.bus[0], addr - 0x80, size);
break;
case 0x8a:
val = pci_ide_cmd_le_ops.read(&d->i.bus[0], 2, size);
break;
case 0xa0:
val = d->regs[0].confstat;
break;
case 0xc0 ... 0xc7:
val = pci_ide_data_le_ops.read(&d->i.bus[1], addr - 0xc0, size);
break;
case 0xca:
val = pci_ide_cmd_le_ops.read(&d->i.bus[1], 2, size);
break;
case 0xe0:
val = d->regs[1].confstat;
break;
case 0x100:
val = d->regs[0].scontrol;
break;
case 0x104:
val = (d->i.bus[0].ifs[0].blk) ? 0x113 : 0;
break;
case 0x148:
val = (uint32_t)d->regs[0].sien << 16;
break;
case 0x180:
val = d->regs[1].scontrol;
break;
case 0x184:
val = (d->i.bus[1].ifs[0].blk) ? 0x113 : 0;
break;
case 0x1c8:
val = (uint32_t)d->regs[1].sien << 16;
break;
default:
val = 0;
}
trace_sii3112_read(size, addr, val);
return val;
}
static void sii3112_reg_write(void *opaque, hwaddr addr,
uint64_t val, unsigned int size)
{
SiI3112PCIState *d = opaque;
trace_sii3112_write(size, addr, val);
switch (addr) {
case 0x00:
case 0x10:
bmdma_cmd_writeb(&d->i.bmdma[0], val);
break;
case 0x01:
case 0x11:
d->regs[0].swdata = val & 0x3f;
break;
case 0x02:
case 0x12:
d->i.bmdma[0].status = (val & 0x60) | (d->i.bmdma[0].status & 1) |
(d->i.bmdma[0].status & ~val & 6);
break;
case 0x04 ... 0x07:
bmdma_addr_ioport_ops.write(&d->i.bmdma[0], addr - 4, val, size);
break;
case 0x08:
case 0x18:
bmdma_cmd_writeb(&d->i.bmdma[1], val);
break;
case 0x09:
case 0x19:
d->regs[1].swdata = val & 0x3f;
break;
case 0x0a:
case 0x1a:
d->i.bmdma[1].status = (val & 0x60) | (d->i.bmdma[1].status & 1) |
(d->i.bmdma[1].status & ~val & 6);
break;
case 0x0c ... 0x0f:
bmdma_addr_ioport_ops.write(&d->i.bmdma[1], addr - 12, val, size);
break;
case 0x80 ... 0x87:
pci_ide_data_le_ops.write(&d->i.bus[0], addr - 0x80, val, size);
break;
case 0x8a:
pci_ide_cmd_le_ops.write(&d->i.bus[0], 2, val, size);
break;
case 0xc0 ... 0xc7:
pci_ide_data_le_ops.write(&d->i.bus[1], addr - 0xc0, val, size);
break;
case 0xca:
pci_ide_cmd_le_ops.write(&d->i.bus[1], 2, val, size);
break;
case 0x100:
d->regs[0].scontrol = val & 0xfff;
if (val & 1) {
ide_bus_reset(&d->i.bus[0]);
}
break;
case 0x148:
d->regs[0].sien = (val >> 16) & 0x3eed;
break;
case 0x180:
d->regs[1].scontrol = val & 0xfff;
if (val & 1) {
ide_bus_reset(&d->i.bus[1]);
}
break;
case 0x1c8:
d->regs[1].sien = (val >> 16) & 0x3eed;
break;
default:
val = 0;
}
}
static const MemoryRegionOps sii3112_reg_ops = {
.read = sii3112_reg_read,
.write = sii3112_reg_write,
.endianness = DEVICE_LITTLE_ENDIAN,
};
/* the PCI irq level is the logical OR of the two channels */
static void sii3112_update_irq(SiI3112PCIState *s)
{
int i, set = 0;
for (i = 0; i < 2; i++) {
set |= s->regs[i].confstat & (1UL << 11);
}
pci_set_irq(PCI_DEVICE(s), (set ? 1 : 0));
}
static void sii3112_set_irq(void *opaque, int channel, int level)
{
SiI3112PCIState *s = opaque;
trace_sii3112_set_irq(channel, level);
if (level) {
s->regs[channel].confstat |= (1UL << 11);
} else {
s->regs[channel].confstat &= ~(1UL << 11);
}
sii3112_update_irq(s);
}
static void sii3112_reset(void *opaque)
{
SiI3112PCIState *s = opaque;
int i;
for (i = 0; i < 2; i++) {
s->regs[i].confstat = 0x6515 << 16;
ide_bus_reset(&s->i.bus[i]);
}
}
static void sii3112_pci_realize(PCIDevice *dev, Error **errp)
{
SiI3112PCIState *d = SII3112_PCI(dev);
PCIIDEState *s = PCI_IDE(dev);
MemoryRegion *mr;
qemu_irq *irq;
int i;
pci_config_set_interrupt_pin(dev->config, 1);
pci_set_byte(dev->config + PCI_CACHE_LINE_SIZE, 8);
/* BAR5 is in PCI memory space */
memory_region_init_io(&d->mmio, OBJECT(d), &sii3112_reg_ops, d,
"sii3112.bar5", 0x200);
pci_register_bar(dev, 5, PCI_BASE_ADDRESS_SPACE_MEMORY, &d->mmio);
/* BAR0-BAR4 are PCI I/O space aliases into BAR5 */
mr = g_new(MemoryRegion, 1);
memory_region_init_alias(mr, OBJECT(d), "sii3112.bar0", &d->mmio, 0x80, 8);
pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, mr);
mr = g_new(MemoryRegion, 1);
memory_region_init_alias(mr, OBJECT(d), "sii3112.bar1", &d->mmio, 0x88, 4);
pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_IO, mr);
mr = g_new(MemoryRegion, 1);
memory_region_init_alias(mr, OBJECT(d), "sii3112.bar2", &d->mmio, 0xc0, 8);
pci_register_bar(dev, 2, PCI_BASE_ADDRESS_SPACE_IO, mr);
mr = g_new(MemoryRegion, 1);
memory_region_init_alias(mr, OBJECT(d), "sii3112.bar3", &d->mmio, 0xc8, 4);
pci_register_bar(dev, 3, PCI_BASE_ADDRESS_SPACE_IO, mr);
mr = g_new(MemoryRegion, 1);
memory_region_init_alias(mr, OBJECT(d), "sii3112.bar4", &d->mmio, 0, 16);
pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, mr);
irq = qemu_allocate_irqs(sii3112_set_irq, d, 2);
for (i = 0; i < 2; i++) {
ide_bus_new(&s->bus[i], sizeof(s->bus[i]), DEVICE(dev), i, 1);
ide_init2(&s->bus[i], irq[i]);
bmdma_init(&s->bus[i], &s->bmdma[i], s);
s->bmdma[i].bus = &s->bus[i];
ide_register_restart_cb(&s->bus[i]);
}
qemu_register_reset(sii3112_reset, s);
}
static void sii3112_pci_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *pd = PCI_DEVICE_CLASS(klass);
pd->vendor_id = 0x1095;
pd->device_id = 0x3112;
pd->class_id = PCI_CLASS_STORAGE_RAID;
pd->revision = 1;
pd->realize = sii3112_pci_realize;
dc->desc = "SiI3112A SATA controller";
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
}
static const TypeInfo sii3112_pci_info = {
.name = TYPE_SII3112_PCI,
.parent = TYPE_PCI_IDE,
.instance_size = sizeof(SiI3112PCIState),
.class_init = sii3112_pci_class_init,
};
static void sii3112_register_types(void)
{
type_register_static(&sii3112_pci_info);
}
type_init(sii3112_register_types)
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