LXR qemu/hw/ide/ahci-allwinner.c

   1/*
   2 * QEMU Allwinner AHCI Emulation
   3 *
   4 * This program is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU General Public License
   6 * as published by the Free Software Foundation; either version 2
   7 * of the License, or (at your option) any later version.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18#include "qemu/osdep.h"
  19#include "hw/hw.h"
  20#include "qemu/error-report.h"
  21#include "sysemu/dma.h"
  22#include "hw/ide/internal.h"
  23#include "ahci_internal.h"
  24
  25#include "trace.h"
  26
  27#define ALLWINNER_AHCI(obj) \
  28        OBJECT_CHECK(AllwinnerAHCIState, (obj), TYPE_ALLWINNER_AHCI)
  29
  30#define ALLWINNER_AHCI_BISTAFR    ((0xa0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  31#define ALLWINNER_AHCI_BISTCR     ((0xa4 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  32#define ALLWINNER_AHCI_BISTFCTR   ((0xa8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  33#define ALLWINNER_AHCI_BISTSR     ((0xac - ALLWINNER_AHCI_MMIO_OFF) / 4)
  34#define ALLWINNER_AHCI_BISTDECR   ((0xb0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  35#define ALLWINNER_AHCI_DIAGNR0    ((0xb4 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  36#define ALLWINNER_AHCI_DIAGNR1    ((0xb8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  37#define ALLWINNER_AHCI_OOBR       ((0xbc - ALLWINNER_AHCI_MMIO_OFF) / 4)
  38#define ALLWINNER_AHCI_PHYCS0R    ((0xc0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  39#define ALLWINNER_AHCI_PHYCS1R    ((0xc4 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  40#define ALLWINNER_AHCI_PHYCS2R    ((0xc8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  41#define ALLWINNER_AHCI_TIMER1MS   ((0xe0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  42#define ALLWINNER_AHCI_GPARAM1R   ((0xe8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  43#define ALLWINNER_AHCI_GPARAM2R   ((0xec - ALLWINNER_AHCI_MMIO_OFF) / 4)
  44#define ALLWINNER_AHCI_PPARAMR    ((0xf0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  45#define ALLWINNER_AHCI_TESTR      ((0xf4 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  46#define ALLWINNER_AHCI_VERSIONR   ((0xf8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
  47#define ALLWINNER_AHCI_IDR        ((0xfc - ALLWINNER_AHCI_MMIO_OFF) / 4)
  48#define ALLWINNER_AHCI_RWCR       ((0xfc - ALLWINNER_AHCI_MMIO_OFF) / 4)
  49
  50static uint64_t allwinner_ahci_mem_read(void *opaque, hwaddr addr,
  51                                        unsigned size)
  52{
  53    AllwinnerAHCIState *a = opaque;
  54    AHCIState *s = &(SYSBUS_AHCI(a)->ahci);
  55    uint64_t val = a->regs[addr / 4];
  56
  57    switch (addr / 4) {
  58    case ALLWINNER_AHCI_PHYCS0R:
  59        val |= 0x2 << 28;
  60        break;
  61    case ALLWINNER_AHCI_PHYCS2R:
  62        val &= ~(0x1 << 24);
  63        break;
  64    }
  65    trace_allwinner_ahci_mem_read(s, a, addr, val, size);
  66    return  val;
  67}
  68
  69static void allwinner_ahci_mem_write(void *opaque, hwaddr addr,
  70                                     uint64_t val, unsigned size)
  71{
  72    AllwinnerAHCIState *a = opaque;
  73    AHCIState *s = &(SYSBUS_AHCI(a)->ahci);
  74
  75    trace_allwinner_ahci_mem_write(s, a, addr, val, size);
  76    a->regs[addr / 4] = val;
  77}
  78
  79static const MemoryRegionOps allwinner_ahci_mem_ops = {
  80    .read = allwinner_ahci_mem_read,
  81    .write = allwinner_ahci_mem_write,
  82    .valid.min_access_size = 4,
  83    .valid.max_access_size = 4,
  84    .endianness = DEVICE_LITTLE_ENDIAN,
  85};
  86
  87static void allwinner_ahci_init(Object *obj)
  88{
  89    SysbusAHCIState *s = SYSBUS_AHCI(obj);
  90    AllwinnerAHCIState *a = ALLWINNER_AHCI(obj);
  91
  92    memory_region_init_io(&a->mmio, OBJECT(obj), &allwinner_ahci_mem_ops, a,
  93                          "allwinner-ahci", ALLWINNER_AHCI_MMIO_SIZE);
  94    memory_region_add_subregion(&s->ahci.mem, ALLWINNER_AHCI_MMIO_OFF,
  95                                &a->mmio);
  96}
  97
  98static const VMStateDescription vmstate_allwinner_ahci = {
  99    .name = "allwinner-ahci",
 100    .version_id = 1,
 101    .minimum_version_id = 1,
 102    .fields = (VMStateField[]) {
 103        VMSTATE_UINT32_ARRAY(regs, AllwinnerAHCIState,
 104                             ALLWINNER_AHCI_MMIO_SIZE / 4),
 105        VMSTATE_END_OF_LIST()
 106    }
 107};
 108
 109static void allwinner_ahci_class_init(ObjectClass *klass, void *data)
 110{
 111    DeviceClass *dc = DEVICE_CLASS(klass);
 112
 113    dc->vmsd = &vmstate_allwinner_ahci;
 114}
 115
 116static const TypeInfo allwinner_ahci_info = {
 117    .name          = TYPE_ALLWINNER_AHCI,
 118    .parent        = TYPE_SYSBUS_AHCI,
 119    .instance_size = sizeof(AllwinnerAHCIState),
 120    .instance_init = allwinner_ahci_init,
 121    .class_init    = allwinner_ahci_class_init,
 122};
 123
 124static void sysbus_ahci_register_types(void)
 125{
 126    type_register_static(&allwinner_ahci_info);
 127}
 128
 129type_init(sysbus_ahci_register_types)
 130