hw/misc/pxa2xx_pcmcia.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 "hw/hw.h"
  14 #include "hw/pcmcia.h"
  15 #include "hw/arm/pxa.h"
  16
  17
  18 struct PXA2xxPCMCIAState {
  19     PCMCIASocket slot;
  20     PCMCIACardState *card;
  21     MemoryRegion common_iomem;
  22     MemoryRegion attr_iomem;
  23     MemoryRegion iomem;
  24
  25     qemu_irq irq;
  26     qemu_irq cd_irq;
  27 };
  28
  29 static uint64_t pxa2xx_pcmcia_common_read(void *opaque,
  30                 hwaddr offset, unsigned size)
  31 {
  32     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  33
  34     if (s->slot.attached) {
  35         return s->card->common_read(s->card->state, offset);
  36     }
  37
  38     return 0;
  39 }
  40
  41 static void pxa2xx_pcmcia_common_write(void *opaque, hwaddr offset,
  42                                        uint64_t value, unsigned size)
  43 {
  44     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  45
  46     if (s->slot.attached) {
  47         s->card->common_write(s->card->state, offset, value);
  48     }
  49 }
  50
  51 static uint64_t pxa2xx_pcmcia_attr_read(void *opaque,
  52                 hwaddr offset, unsigned size)
  53 {
  54     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  55
  56     if (s->slot.attached) {
  57         return s->card->attr_read(s->card->state, offset);
  58     }
  59
  60     return 0;
  61 }
  62
  63 static void pxa2xx_pcmcia_attr_write(void *opaque, hwaddr offset,
  64                                      uint64_t value, unsigned size)
  65 {
  66     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  67
  68     if (s->slot.attached) {
  69         s->card->attr_write(s->card->state, offset, value);
  70     }
  71 }
  72
  73 static uint64_t pxa2xx_pcmcia_io_read(void *opaque,
  74                 hwaddr offset, unsigned size)
  75 {
  76     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  77
  78     if (s->slot.attached) {
  79         return s->card->io_read(s->card->state, offset);
  80     }
  81
  82     return 0;
  83 }
  84
  85 static void pxa2xx_pcmcia_io_write(void *opaque, hwaddr offset,
  86                                    uint64_t value, unsigned size)
  87 {
  88     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  89
  90     if (s->slot.attached) {
  91         s->card->io_write(s->card->state, offset, value);
  92     }
  93 }
  94
  95 static const MemoryRegionOps pxa2xx_pcmcia_common_ops = {
  96     .read = pxa2xx_pcmcia_common_read,
  97     .write = pxa2xx_pcmcia_common_write,
  98     .endianness = DEVICE_NATIVE_ENDIAN
  99 };
 100
 101 static const MemoryRegionOps pxa2xx_pcmcia_attr_ops = {
 102     .read = pxa2xx_pcmcia_attr_read,
 103     .write = pxa2xx_pcmcia_attr_write,
 104     .endianness = DEVICE_NATIVE_ENDIAN
 105 };
 106
 107 static const MemoryRegionOps pxa2xx_pcmcia_io_ops = {
 108     .read = pxa2xx_pcmcia_io_read,
 109     .write = pxa2xx_pcmcia_io_write,
 110     .endianness = DEVICE_NATIVE_ENDIAN
 111 };
 112
 113 static void pxa2xx_pcmcia_set_irq(void *opaque, int line, int level)
 114 {
 115     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 116     if (!s->irq)
 117         return;
 118
 119     qemu_set_irq(s->irq, level);
 120 }
 121
 122 PXA2xxPCMCIAState *pxa2xx_pcmcia_init(MemoryRegion *sysmem,
 123                                       hwaddr base)
 124 {
 125     PXA2xxPCMCIAState *s;
 126
 127     s = (PXA2xxPCMCIAState *)
 128             g_malloc0(sizeof(PXA2xxPCMCIAState));
 129
 130     /* Socket I/O Memory Space */
 131     memory_region_init_io(&s->iomem, &pxa2xx_pcmcia_io_ops, s,
 132                           "pxa2xx-pcmcia-io", 0x04000000);
 133     memory_region_add_subregion(sysmem, base | 0x00000000,
 134                                 &s->iomem);
 135
 136     /* Then next 64 MB is reserved */
 137
 138     /* Socket Attribute Memory Space */
 139     memory_region_init_io(&s->attr_iomem, &pxa2xx_pcmcia_attr_ops, s,
 140                           "pxa2xx-pcmcia-attribute", 0x04000000);
 141     memory_region_add_subregion(sysmem, base | 0x08000000,
 142                                 &s->attr_iomem);
 143
 144     /* Socket Common Memory Space */
 145     memory_region_init_io(&s->common_iomem, &pxa2xx_pcmcia_common_ops, s,
 146                           "pxa2xx-pcmcia-common", 0x04000000);
 147     memory_region_add_subregion(sysmem, base | 0x0c000000,
 148                                 &s->common_iomem);
 149
 150     if (base == 0x30000000)
 151         s->slot.slot_string = "PXA PC Card Socket 1";
 152     else
 153         s->slot.slot_string = "PXA PC Card Socket 0";
 154     s->slot.irq = qemu_allocate_irqs(pxa2xx_pcmcia_set_irq, s, 1)[0];
 155     pcmcia_socket_register(&s->slot);
 156
 157     return s;
 158 }
 159
 160 /* Insert a new card into a slot */
 161 int pxa2xx_pcmcia_attach(void *opaque, PCMCIACardState *card)
 162 {
 163     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 164     if (s->slot.attached)
 165         return -EEXIST;
 166
 167     if (s->cd_irq) {
 168         qemu_irq_raise(s->cd_irq);
 169     }
 170
 171     s->card = card;
 172
 173     s->slot.attached = 1;
 174     s->card->slot = &s->slot;
 175     s->card->attach(s->card->state);
 176
 177     return 0;
 178 }
 179
 180 /* Eject card from the slot */
 181 int pxa2xx_pcmcia_dettach(void *opaque)
 182 {
 183     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 184     if (!s->slot.attached)
 185         return -ENOENT;
 186
 187     s->card->detach(s->card->state);
 188     s->card->slot = NULL;
 189     s->card = NULL;
 190
 191     s->slot.attached = 0;
 192
 193     if (s->irq)
 194         qemu_irq_lower(s->irq);
 195     if (s->cd_irq)
 196         qemu_irq_lower(s->cd_irq);
 197
 198     return 0;
 199 }
 200
 201 /* Who to notify on card events */
 202 void pxa2xx_pcmcia_set_irq_cb(void *opaque, qemu_irq irq, qemu_irq cd_irq)
 203 {
 204     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 205     s->irq = irq;
 206     s->cd_irq = cd_irq;
 207 }