hw/pcmcia/pxa2xx.c

   1 /*
   2  * Intel XScale PXA255/270 PC Card and CompactFlash Interface.
   3  *
   4  * Copyright (c) 2006 Openedhand Ltd.
   5  * Written by Andrzej Zaborowski <balrog@zabor.org>
   6  *
   7  * This code is licensed under the GPLv2.
   8  *
   9  * Contributions after 2012-01-13 are licensed under the terms of the
  10  * GNU GPL, version 2 or (at your option) any later version.
  11  */
  12
  13 #include "qemu/osdep.h"
  14 #include "hw/hw.h"
  15 #include "hw/sysbus.h"
  16 #include "qemu/module.h"
  17 #include "hw/pcmcia.h"
  18 #include "hw/arm/pxa.h"
  19
  20 #define TYPE_PXA2XX_PCMCIA "pxa2xx-pcmcia"
  21 #define PXA2XX_PCMCIA(obj) \
  22     OBJECT_CHECK(PXA2xxPCMCIAState, obj, TYPE_PXA2XX_PCMCIA)
  23
  24 struct PXA2xxPCMCIAState {
  25     SysBusDevice parent_obj;
  26
  27     PCMCIASocket slot;
  28     MemoryRegion container_mem;
  29     MemoryRegion common_iomem;
  30     MemoryRegion attr_iomem;
  31     MemoryRegion iomem;
  32
  33     qemu_irq irq;
  34     qemu_irq cd_irq;
  35
  36     PCMCIACardState *card;
  37 };
  38
  39 static uint64_t pxa2xx_pcmcia_common_read(void *opaque,
  40                 hwaddr offset, unsigned size)
  41 {
  42     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  43     PCMCIACardClass *pcc;
  44
  45     if (s->slot.attached) {
  46         pcc = PCMCIA_CARD_GET_CLASS(s->card);
  47         return pcc->common_read(s->card, offset);
  48     }
  49
  50     return 0;
  51 }
  52
  53 static void pxa2xx_pcmcia_common_write(void *opaque, hwaddr offset,
  54                                        uint64_t value, unsigned size)
  55 {
  56     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  57     PCMCIACardClass *pcc;
  58
  59     if (s->slot.attached) {
  60         pcc = PCMCIA_CARD_GET_CLASS(s->card);
  61         pcc->common_write(s->card, offset, value);
  62     }
  63 }
  64
  65 static uint64_t pxa2xx_pcmcia_attr_read(void *opaque,
  66                 hwaddr offset, unsigned size)
  67 {
  68     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  69     PCMCIACardClass *pcc;
  70
  71     if (s->slot.attached) {
  72         pcc = PCMCIA_CARD_GET_CLASS(s->card);
  73         return pcc->attr_read(s->card, offset);
  74     }
  75
  76     return 0;
  77 }
  78
  79 static void pxa2xx_pcmcia_attr_write(void *opaque, hwaddr offset,
  80                                      uint64_t value, unsigned size)
  81 {
  82     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  83     PCMCIACardClass *pcc;
  84
  85     if (s->slot.attached) {
  86         pcc = PCMCIA_CARD_GET_CLASS(s->card);
  87         pcc->attr_write(s->card, offset, value);
  88     }
  89 }
  90
  91 static uint64_t pxa2xx_pcmcia_io_read(void *opaque,
  92                 hwaddr offset, unsigned size)
  93 {
  94     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  95     PCMCIACardClass *pcc;
  96
  97     if (s->slot.attached) {
  98         pcc = PCMCIA_CARD_GET_CLASS(s->card);
  99         return pcc->io_read(s->card, offset);
 100     }
 101
 102     return 0;
 103 }
 104
 105 static void pxa2xx_pcmcia_io_write(void *opaque, hwaddr offset,
 106                                    uint64_t value, unsigned size)
 107 {
 108     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 109     PCMCIACardClass *pcc;
 110
 111     if (s->slot.attached) {
 112         pcc = PCMCIA_CARD_GET_CLASS(s->card);
 113         pcc->io_write(s->card, offset, value);
 114     }
 115 }
 116
 117 static const MemoryRegionOps pxa2xx_pcmcia_common_ops = {
 118     .read = pxa2xx_pcmcia_common_read,
 119     .write = pxa2xx_pcmcia_common_write,
 120     .endianness = DEVICE_NATIVE_ENDIAN
 121 };
 122
 123 static const MemoryRegionOps pxa2xx_pcmcia_attr_ops = {
 124     .read = pxa2xx_pcmcia_attr_read,
 125     .write = pxa2xx_pcmcia_attr_write,
 126     .endianness = DEVICE_NATIVE_ENDIAN
 127 };
 128
 129 static const MemoryRegionOps pxa2xx_pcmcia_io_ops = {
 130     .read = pxa2xx_pcmcia_io_read,
 131     .write = pxa2xx_pcmcia_io_write,
 132     .endianness = DEVICE_NATIVE_ENDIAN
 133 };
 134
 135 static void pxa2xx_pcmcia_set_irq(void *opaque, int line, int level)
 136 {
 137     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 138     if (!s->irq)
 139         return;
 140
 141     qemu_set_irq(s->irq, level);
 142 }
 143
 144 PXA2xxPCMCIAState *pxa2xx_pcmcia_init(MemoryRegion *sysmem,
 145                                       hwaddr base)
 146 {
 147     DeviceState *dev;
 148     PXA2xxPCMCIAState *s;
 149
 150     dev = qdev_create(NULL, TYPE_PXA2XX_PCMCIA);
 151     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
 152     s = PXA2XX_PCMCIA(dev);
 153
 154     qdev_init_nofail(dev);
 155
 156     return s;
 157 }
 158
 159 static void pxa2xx_pcmcia_initfn(Object *obj)
 160 {
 161     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
 162     PXA2xxPCMCIAState *s = PXA2XX_PCMCIA(obj);
 163
 164     memory_region_init(&s->container_mem, obj, "container", 0x10000000);
 165     sysbus_init_mmio(sbd, &s->container_mem);
 166
 167     /* Socket I/O Memory Space */
 168     memory_region_init_io(&s->iomem, obj, &pxa2xx_pcmcia_io_ops, s,
 169                           "pxa2xx-pcmcia-io", 0x04000000);
 170     memory_region_add_subregion(&s->container_mem, 0x00000000,
 171                                 &s->iomem);
 172
 173     /* Then next 64 MB is reserved */
 174
 175     /* Socket Attribute Memory Space */
 176     memory_region_init_io(&s->attr_iomem, obj, &pxa2xx_pcmcia_attr_ops, s,
 177                           "pxa2xx-pcmcia-attribute", 0x04000000);
 178     memory_region_add_subregion(&s->container_mem, 0x08000000,
 179                                 &s->attr_iomem);
 180
 181     /* Socket Common Memory Space */
 182     memory_region_init_io(&s->common_iomem, obj, &pxa2xx_pcmcia_common_ops, s,
 183                           "pxa2xx-pcmcia-common", 0x04000000);
 184     memory_region_add_subregion(&s->container_mem, 0x0c000000,
 185                                 &s->common_iomem);
 186
 187     s->slot.irq = qemu_allocate_irq(pxa2xx_pcmcia_set_irq, s, 0);
 188
 189     object_property_add_link(obj, "card", TYPE_PCMCIA_CARD,
 190                              (Object **)&s->card,
 191                              NULL, /* read-only property */
 192                              0, NULL);
 193 }
 194
 195 /* Insert a new card into a slot */
 196 int pxa2xx_pcmcia_attach(void *opaque, PCMCIACardState *card)
 197 {
 198     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 199     PCMCIACardClass *pcc;
 200
 201     if (s->slot.attached) {
 202         return -EEXIST;
 203     }
 204
 205     if (s->cd_irq) {
 206         qemu_irq_raise(s->cd_irq);
 207     }
 208
 209     s->card = card;
 210     pcc = PCMCIA_CARD_GET_CLASS(s->card);
 211
 212     s->slot.attached = true;
 213     s->card->slot = &s->slot;
 214     pcc->attach(s->card);
 215
 216     return 0;
 217 }
 218
 219 /* Eject card from the slot */
 220 int pxa2xx_pcmcia_detach(void *opaque)
 221 {
 222     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 223     PCMCIACardClass *pcc;
 224
 225     if (!s->slot.attached) {
 226         return -ENOENT;
 227     }
 228
 229     pcc = PCMCIA_CARD_GET_CLASS(s->card);
 230     pcc->detach(s->card);
 231     s->card->slot = NULL;
 232     s->card = NULL;
 233
 234     s->slot.attached = false;
 235
 236     if (s->irq) {
 237         qemu_irq_lower(s->irq);
 238     }
 239     if (s->cd_irq) {
 240         qemu_irq_lower(s->cd_irq);
 241     }
 242
 243     return 0;
 244 }
 245
 246 /* Who to notify on card events */
 247 void pxa2xx_pcmcia_set_irq_cb(void *opaque, qemu_irq irq, qemu_irq cd_irq)
 248 {
 249     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 250     s->irq = irq;
 251     s->cd_irq = cd_irq;
 252 }
 253
 254 static const TypeInfo pxa2xx_pcmcia_type_info = {
 255     .name = TYPE_PXA2XX_PCMCIA,
 256     .parent = TYPE_SYS_BUS_DEVICE,
 257     .instance_size = sizeof(PXA2xxPCMCIAState),
 258     .instance_init = pxa2xx_pcmcia_initfn,
 259 };
 260
 261 static void pxa2xx_pcmcia_register_types(void)
 262 {
 263     type_register_static(&pxa2xx_pcmcia_type_info);
 264 }
 265
 266 type_init(pxa2xx_pcmcia_register_types)