hw/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
  10 #include "hw.h"
  11 #include "pcmcia.h"
  12 #include "pxa.h"
  13
  14
  15 struct PXA2xxPCMCIAState {
  16     PCMCIASocket slot;
  17     PCMCIACardState *card;
  18     MemoryRegion common_iomem;
  19     MemoryRegion attr_iomem;
  20     MemoryRegion iomem;
  21
  22     qemu_irq irq;
  23     qemu_irq cd_irq;
  24 };
  25
  26 static uint64_t pxa2xx_pcmcia_common_read(void *opaque,
  27                 target_phys_addr_t offset, unsigned size)
  28 {
  29     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  30
  31     if (s->slot.attached) {
  32         return s->card->common_read(s->card->state, offset);
  33     }
  34
  35     return 0;
  36 }
  37
  38 static void pxa2xx_pcmcia_common_write(void *opaque, target_phys_addr_t offset,
  39                                        uint64_t value, unsigned size)
  40 {
  41     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  42
  43     if (s->slot.attached) {
  44         s->card->common_write(s->card->state, offset, value);
  45     }
  46 }
  47
  48 static uint64_t pxa2xx_pcmcia_attr_read(void *opaque,
  49                 target_phys_addr_t offset, unsigned size)
  50 {
  51     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  52
  53     if (s->slot.attached) {
  54         return s->card->attr_read(s->card->state, offset);
  55     }
  56
  57     return 0;
  58 }
  59
  60 static void pxa2xx_pcmcia_attr_write(void *opaque, target_phys_addr_t offset,
  61                                      uint64_t value, unsigned size)
  62 {
  63     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  64
  65     if (s->slot.attached) {
  66         s->card->attr_write(s->card->state, offset, value);
  67     }
  68 }
  69
  70 static uint64_t pxa2xx_pcmcia_io_read(void *opaque,
  71                 target_phys_addr_t offset, unsigned size)
  72 {
  73     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  74
  75     if (s->slot.attached) {
  76         return s->card->io_read(s->card->state, offset);
  77     }
  78
  79     return 0;
  80 }
  81
  82 static void pxa2xx_pcmcia_io_write(void *opaque, target_phys_addr_t offset,
  83                                    uint64_t value, unsigned size)
  84 {
  85     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
  86
  87     if (s->slot.attached) {
  88         s->card->io_write(s->card->state, offset, value);
  89     }
  90 }
  91
  92 static const MemoryRegionOps pxa2xx_pcmcia_common_ops = {
  93     .read = pxa2xx_pcmcia_common_read,
  94     .write = pxa2xx_pcmcia_common_write,
  95     .endianness = DEVICE_NATIVE_ENDIAN
  96 };
  97
  98 static const MemoryRegionOps pxa2xx_pcmcia_attr_ops = {
  99     .read = pxa2xx_pcmcia_attr_read,
 100     .write = pxa2xx_pcmcia_attr_write,
 101     .endianness = DEVICE_NATIVE_ENDIAN
 102 };
 103
 104 static const MemoryRegionOps pxa2xx_pcmcia_io_ops = {
 105     .read = pxa2xx_pcmcia_io_read,
 106     .write = pxa2xx_pcmcia_io_write,
 107     .endianness = DEVICE_NATIVE_ENDIAN
 108 };
 109
 110 static void pxa2xx_pcmcia_set_irq(void *opaque, int line, int level)
 111 {
 112     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 113     if (!s->irq)
 114         return;
 115
 116     qemu_set_irq(s->irq, level);
 117 }
 118
 119 PXA2xxPCMCIAState *pxa2xx_pcmcia_init(MemoryRegion *sysmem,
 120                                       target_phys_addr_t base)
 121 {
 122     PXA2xxPCMCIAState *s;
 123
 124     s = (PXA2xxPCMCIAState *)
 125             g_malloc0(sizeof(PXA2xxPCMCIAState));
 126
 127     /* Socket I/O Memory Space */
 128     memory_region_init_io(&s->iomem, &pxa2xx_pcmcia_io_ops, s,
 129                           "pxa2xx-pcmcia-io", 0x04000000);
 130     memory_region_add_subregion(sysmem, base | 0x00000000,
 131                                 &s->iomem);
 132
 133     /* Then next 64 MB is reserved */
 134
 135     /* Socket Attribute Memory Space */
 136     memory_region_init_io(&s->attr_iomem, &pxa2xx_pcmcia_attr_ops, s,
 137                           "pxa2xx-pcmcia-attribute", 0x04000000);
 138     memory_region_add_subregion(sysmem, base | 0x08000000,
 139                                 &s->attr_iomem);
 140
 141     /* Socket Common Memory Space */
 142     memory_region_init_io(&s->common_iomem, &pxa2xx_pcmcia_common_ops, s,
 143                           "pxa2xx-pcmcia-common", 0x04000000);
 144     memory_region_add_subregion(sysmem, base | 0x0c000000,
 145                                 &s->common_iomem);
 146
 147     if (base == 0x30000000)
 148         s->slot.slot_string = "PXA PC Card Socket 1";
 149     else
 150         s->slot.slot_string = "PXA PC Card Socket 0";
 151     s->slot.irq = qemu_allocate_irqs(pxa2xx_pcmcia_set_irq, s, 1)[0];
 152     pcmcia_socket_register(&s->slot);
 153
 154     return s;
 155 }
 156
 157 /* Insert a new card into a slot */
 158 int pxa2xx_pcmcia_attach(void *opaque, PCMCIACardState *card)
 159 {
 160     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 161     if (s->slot.attached)
 162         return -EEXIST;
 163
 164     if (s->cd_irq) {
 165         qemu_irq_raise(s->cd_irq);
 166     }
 167
 168     s->card = card;
 169
 170     s->slot.attached = 1;
 171     s->card->slot = &s->slot;
 172     s->card->attach(s->card->state);
 173
 174     return 0;
 175 }
 176
 177 /* Eject card from the slot */
 178 int pxa2xx_pcmcia_dettach(void *opaque)
 179 {
 180     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 181     if (!s->slot.attached)
 182         return -ENOENT;
 183
 184     s->card->detach(s->card->state);
 185     s->card->slot = NULL;
 186     s->card = NULL;
 187
 188     s->slot.attached = 0;
 189
 190     if (s->irq)
 191         qemu_irq_lower(s->irq);
 192     if (s->cd_irq)
 193         qemu_irq_lower(s->cd_irq);
 194
 195     return 0;
 196 }
 197
 198 /* Who to notify on card events */
 199 void pxa2xx_pcmcia_set_irq_cb(void *opaque, qemu_irq irq, qemu_irq cd_irq)
 200 {
 201     PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
 202     s->irq = irq;
 203     s->cd_irq = cd_irq;
 204 }