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
  50 static 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
  69 static 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
  79 static 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
  87 static 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
  98 static 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
 109 static 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
 116 static 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
 124 static void sysbus_ahci_register_types(void)
 125 {
 126     type_register_static(&allwinner_ahci_info);
 127 }
 128
 129 type_init(sysbus_ahci_register_types)