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 struct pxa2xx_pcmcia_s {
  15     struct pcmcia_socket_s slot;
  16     struct pcmcia_card_s *card;
  17     target_phys_addr_t common_base;
  18     target_phys_addr_t attr_base;
  19     target_phys_addr_t io_base;
  20
  21     qemu_irq irq;
  22     qemu_irq cd_irq;
  23 };
  24
  25 static uint32_t pxa2xx_pcmcia_common_read(void *opaque,
  26                 target_phys_addr_t offset)
  27 {
  28     struct pxa2xx_pcmcia_s *s = (struct pxa2xx_pcmcia_s *) opaque;
  29
  30     if (s->slot.attached) {
  31         offset -= s->common_base;
  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,
  39                 target_phys_addr_t offset, uint32_t value)
  40 {
  41     struct pxa2xx_pcmcia_s *s = (struct pxa2xx_pcmcia_s *) opaque;
  42
  43     if (s->slot.attached) {
  44         offset -= s->common_base;
  45         s->card->common_write(s->card->state, offset, value);
  46     }
  47 }
  48
  49 static uint32_t pxa2xx_pcmcia_attr_read(void *opaque,
  50                 target_phys_addr_t offset)
  51 {
  52     struct pxa2xx_pcmcia_s *s = (struct pxa2xx_pcmcia_s *) opaque;
  53
  54     if (s->slot.attached) {
  55         offset -= s->attr_base;
  56         return s->card->attr_read(s->card->state, offset);
  57     }
  58
  59     return 0;
  60 }
  61
  62 static void pxa2xx_pcmcia_attr_write(void *opaque,
  63                 target_phys_addr_t offset, uint32_t value)
  64 {
  65     struct pxa2xx_pcmcia_s *s = (struct pxa2xx_pcmcia_s *) opaque;
  66
  67     if (s->slot.attached) {
  68         offset -= s->attr_base;
  69         s->card->attr_write(s->card->state, offset, value);
  70     }
  71 }
  72
  73 static uint32_t pxa2xx_pcmcia_io_read(void *opaque,
  74                 target_phys_addr_t offset)
  75 {
  76     struct pxa2xx_pcmcia_s *s = (struct pxa2xx_pcmcia_s *) opaque;
  77
  78     if (s->slot.attached) {
  79         offset -= s->io_base;
  80         return s->card->io_read(s->card->state, offset);
  81     }
  82
  83     return 0;
  84 }
  85
  86 static void pxa2xx_pcmcia_io_write(void *opaque,
  87                 target_phys_addr_t offset, uint32_t value)
  88 {
  89     struct pxa2xx_pcmcia_s *s = (struct pxa2xx_pcmcia_s *) opaque;
  90
  91     if (s->slot.attached) {
  92         offset -= s->io_base;
  93         s->card->io_write(s->card->state, offset, value);
  94     }
  95 }
  96
  97 static CPUReadMemoryFunc *pxa2xx_pcmcia_common_readfn[] = {
  98     pxa2xx_pcmcia_common_read,
  99     pxa2xx_pcmcia_common_read,
 100     pxa2xx_pcmcia_common_read,
 101 };
 102
 103 static CPUWriteMemoryFunc *pxa2xx_pcmcia_common_writefn[] = {
 104     pxa2xx_pcmcia_common_write,
 105     pxa2xx_pcmcia_common_write,
 106     pxa2xx_pcmcia_common_write,
 107 };
 108
 109 static CPUReadMemoryFunc *pxa2xx_pcmcia_attr_readfn[] = {
 110     pxa2xx_pcmcia_attr_read,
 111     pxa2xx_pcmcia_attr_read,
 112     pxa2xx_pcmcia_attr_read,
 113 };
 114
 115 static CPUWriteMemoryFunc *pxa2xx_pcmcia_attr_writefn[] = {
 116     pxa2xx_pcmcia_attr_write,
 117     pxa2xx_pcmcia_attr_write,
 118     pxa2xx_pcmcia_attr_write,
 119 };
 120
 121 static CPUReadMemoryFunc *pxa2xx_pcmcia_io_readfn[] = {
 122     pxa2xx_pcmcia_io_read,
 123     pxa2xx_pcmcia_io_read,
 124     pxa2xx_pcmcia_io_read,
 125 };
 126
 127 static CPUWriteMemoryFunc *pxa2xx_pcmcia_io_writefn[] = {
 128     pxa2xx_pcmcia_io_write,
 129     pxa2xx_pcmcia_io_write,
 130     pxa2xx_pcmcia_io_write,
 131 };
 132
 133 static void pxa2xx_pcmcia_set_irq(void *opaque, int line, int level)
 134 {
 135     struct pxa2xx_pcmcia_s *s = (struct pxa2xx_pcmcia_s *) opaque;
 136     if (!s->irq)
 137         return;
 138
 139     qemu_set_irq(s->irq, level);
 140 }
 141
 142 struct pxa2xx_pcmcia_s *pxa2xx_pcmcia_init(target_phys_addr_t base)
 143 {
 144     int iomemtype;
 145     struct pxa2xx_pcmcia_s *s;
 146
 147     s = (struct pxa2xx_pcmcia_s *)
 148             qemu_mallocz(sizeof(struct pxa2xx_pcmcia_s));
 149
 150     /* Socket I/O Memory Space */
 151     s->io_base = base | 0x00000000;
 152     iomemtype = cpu_register_io_memory(0, pxa2xx_pcmcia_io_readfn,
 153                     pxa2xx_pcmcia_io_writefn, s);
 154     cpu_register_physical_memory(s->io_base, 0x04000000, iomemtype);
 155
 156     /* Then next 64 MB is reserved */
 157
 158     /* Socket Attribute Memory Space */
 159     s->attr_base = base | 0x08000000;
 160     iomemtype = cpu_register_io_memory(0, pxa2xx_pcmcia_attr_readfn,
 161                     pxa2xx_pcmcia_attr_writefn, s);
 162     cpu_register_physical_memory(s->attr_base, 0x04000000, iomemtype);
 163
 164     /* Socket Common Memory Space */
 165     s->common_base = base | 0x0c000000;
 166     iomemtype = cpu_register_io_memory(0, pxa2xx_pcmcia_common_readfn,
 167                     pxa2xx_pcmcia_common_writefn, s);
 168     cpu_register_physical_memory(s->common_base, 0x04000000, iomemtype);
 169
 170     if (base == 0x30000000)
 171         s->slot.slot_string = "PXA PC Card Socket 1";
 172     else
 173         s->slot.slot_string = "PXA PC Card Socket 0";
 174     s->slot.irq = qemu_allocate_irqs(pxa2xx_pcmcia_set_irq, s, 1)[0];
 175     pcmcia_socket_register(&s->slot);
 176
 177     return s;
 178 }
 179
 180 /* Insert a new card into a slot */
 181 int pxa2xx_pcmcia_attach(void *opaque, struct pcmcia_card_s *card)
 182 {
 183     struct pxa2xx_pcmcia_s *s = (struct pxa2xx_pcmcia_s *) opaque;
 184     if (s->slot.attached)
 185         return -EEXIST;
 186
 187     if (s->cd_irq) {
 188         qemu_irq_raise(s->cd_irq);
 189     }
 190
 191     s->card = card;
 192
 193     s->slot.attached = 1;
 194     s->card->slot = &s->slot;
 195     s->card->attach(s->card->state);
 196
 197     return 0;
 198 }
 199
 200 /* Eject card from the slot */
 201 int pxa2xx_pcmcia_dettach(void *opaque)
 202 {
 203     struct pxa2xx_pcmcia_s *s = (struct pxa2xx_pcmcia_s *) opaque;
 204     if (!s->slot.attached)
 205         return -ENOENT;
 206
 207     s->card->detach(s->card->state);
 208     s->card->slot = 0;
 209     s->card = 0;
 210
 211     s->slot.attached = 0;
 212
 213     if (s->irq)
 214         qemu_irq_lower(s->irq);
 215     if (s->cd_irq)
 216         qemu_irq_lower(s->cd_irq);
 217
 218     return 0;
 219 }
 220
 221 /* Who to notify on card events */
 222 void pxa2xx_pcmcia_set_irq_cb(void *opaque, qemu_irq irq, qemu_irq cd_irq)
 223 {
 224     struct pxa2xx_pcmcia_s *s = (struct pxa2xx_pcmcia_s *) opaque;
 225     s->irq = irq;
 226     s->cd_irq = cd_irq;
 227 }