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