pxa2xx.c (6885B)
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 struct PXA2xxPCMCIAState { 22 SysBusDevice parent_obj; 23 24 PCMCIASocket slot; 25 MemoryRegion container_mem; 26 MemoryRegion common_iomem; 27 MemoryRegion attr_iomem; 28 MemoryRegion iomem; 29 30 qemu_irq irq; 31 qemu_irq cd_irq; 32 33 PCMCIACardState *card; 34 }; 35 36 static uint64_t pxa2xx_pcmcia_common_read(void *opaque, 37 hwaddr offset, unsigned size) 38 { 39 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 40 PCMCIACardClass *pcc; 41 42 if (s->slot.attached) { 43 pcc = PCMCIA_CARD_GET_CLASS(s->card); 44 return pcc->common_read(s->card, offset); 45 } 46 47 return 0; 48 } 49 50 static void pxa2xx_pcmcia_common_write(void *opaque, hwaddr offset, 51 uint64_t value, unsigned size) 52 { 53 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 54 PCMCIACardClass *pcc; 55 56 if (s->slot.attached) { 57 pcc = PCMCIA_CARD_GET_CLASS(s->card); 58 pcc->common_write(s->card, offset, value); 59 } 60 } 61 62 static uint64_t pxa2xx_pcmcia_attr_read(void *opaque, 63 hwaddr offset, unsigned size) 64 { 65 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 66 PCMCIACardClass *pcc; 67 68 if (s->slot.attached) { 69 pcc = PCMCIA_CARD_GET_CLASS(s->card); 70 return pcc->attr_read(s->card, offset); 71 } 72 73 return 0; 74 } 75 76 static void pxa2xx_pcmcia_attr_write(void *opaque, hwaddr offset, 77 uint64_t value, unsigned size) 78 { 79 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 80 PCMCIACardClass *pcc; 81 82 if (s->slot.attached) { 83 pcc = PCMCIA_CARD_GET_CLASS(s->card); 84 pcc->attr_write(s->card, offset, value); 85 } 86 } 87 88 static uint64_t pxa2xx_pcmcia_io_read(void *opaque, 89 hwaddr offset, unsigned size) 90 { 91 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 92 PCMCIACardClass *pcc; 93 94 if (s->slot.attached) { 95 pcc = PCMCIA_CARD_GET_CLASS(s->card); 96 return pcc->io_read(s->card, offset); 97 } 98 99 return 0; 100 } 101 102 static void pxa2xx_pcmcia_io_write(void *opaque, hwaddr offset, 103 uint64_t value, unsigned size) 104 { 105 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 106 PCMCIACardClass *pcc; 107 108 if (s->slot.attached) { 109 pcc = PCMCIA_CARD_GET_CLASS(s->card); 110 pcc->io_write(s->card, offset, value); 111 } 112 } 113 114 static const MemoryRegionOps pxa2xx_pcmcia_common_ops = { 115 .read = pxa2xx_pcmcia_common_read, 116 .write = pxa2xx_pcmcia_common_write, 117 .endianness = DEVICE_NATIVE_ENDIAN 118 }; 119 120 static const MemoryRegionOps pxa2xx_pcmcia_attr_ops = { 121 .read = pxa2xx_pcmcia_attr_read, 122 .write = pxa2xx_pcmcia_attr_write, 123 .endianness = DEVICE_NATIVE_ENDIAN 124 }; 125 126 static const MemoryRegionOps pxa2xx_pcmcia_io_ops = { 127 .read = pxa2xx_pcmcia_io_read, 128 .write = pxa2xx_pcmcia_io_write, 129 .endianness = DEVICE_NATIVE_ENDIAN 130 }; 131 132 static void pxa2xx_pcmcia_set_irq(void *opaque, int line, int level) 133 { 134 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 135 if (!s->irq) 136 return; 137 138 qemu_set_irq(s->irq, level); 139 } 140 141 PXA2xxPCMCIAState *pxa2xx_pcmcia_init(MemoryRegion *sysmem, 142 hwaddr base) 143 { 144 DeviceState *dev; 145 PXA2xxPCMCIAState *s; 146 147 dev = qdev_new(TYPE_PXA2XX_PCMCIA); 148 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base); 149 s = PXA2XX_PCMCIA(dev); 150 151 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 152 153 return s; 154 } 155 156 static void pxa2xx_pcmcia_initfn(Object *obj) 157 { 158 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 159 PXA2xxPCMCIAState *s = PXA2XX_PCMCIA(obj); 160 161 memory_region_init(&s->container_mem, obj, "container", 0x10000000); 162 sysbus_init_mmio(sbd, &s->container_mem); 163 164 /* Socket I/O Memory Space */ 165 memory_region_init_io(&s->iomem, obj, &pxa2xx_pcmcia_io_ops, s, 166 "pxa2xx-pcmcia-io", 0x04000000); 167 memory_region_add_subregion(&s->container_mem, 0x00000000, 168 &s->iomem); 169 170 /* Then next 64 MB is reserved */ 171 172 /* Socket Attribute Memory Space */ 173 memory_region_init_io(&s->attr_iomem, obj, &pxa2xx_pcmcia_attr_ops, s, 174 "pxa2xx-pcmcia-attribute", 0x04000000); 175 memory_region_add_subregion(&s->container_mem, 0x08000000, 176 &s->attr_iomem); 177 178 /* Socket Common Memory Space */ 179 memory_region_init_io(&s->common_iomem, obj, &pxa2xx_pcmcia_common_ops, s, 180 "pxa2xx-pcmcia-common", 0x04000000); 181 memory_region_add_subregion(&s->container_mem, 0x0c000000, 182 &s->common_iomem); 183 184 s->slot.irq = qemu_allocate_irq(pxa2xx_pcmcia_set_irq, s, 0); 185 186 object_property_add_link(obj, "card", TYPE_PCMCIA_CARD, 187 (Object **)&s->card, 188 NULL, /* read-only property */ 189 0); 190 } 191 192 /* Insert a new card into a slot */ 193 int pxa2xx_pcmcia_attach(void *opaque, PCMCIACardState *card) 194 { 195 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 196 PCMCIACardClass *pcc; 197 198 if (s->slot.attached) { 199 return -EEXIST; 200 } 201 202 if (s->cd_irq) { 203 qemu_irq_raise(s->cd_irq); 204 } 205 206 s->card = card; 207 pcc = PCMCIA_CARD_GET_CLASS(s->card); 208 209 s->slot.attached = true; 210 s->card->slot = &s->slot; 211 pcc->attach(s->card); 212 213 return 0; 214 } 215 216 /* Eject card from the slot */ 217 int pxa2xx_pcmcia_detach(void *opaque) 218 { 219 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 220 PCMCIACardClass *pcc; 221 222 if (!s->slot.attached) { 223 return -ENOENT; 224 } 225 226 pcc = PCMCIA_CARD_GET_CLASS(s->card); 227 pcc->detach(s->card); 228 s->card->slot = NULL; 229 s->card = NULL; 230 231 s->slot.attached = false; 232 233 if (s->irq) { 234 qemu_irq_lower(s->irq); 235 } 236 if (s->cd_irq) { 237 qemu_irq_lower(s->cd_irq); 238 } 239 240 return 0; 241 } 242 243 /* Who to notify on card events */ 244 void pxa2xx_pcmcia_set_irq_cb(void *opaque, qemu_irq irq, qemu_irq cd_irq) 245 { 246 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 247 s->irq = irq; 248 s->cd_irq = cd_irq; 249 } 250 251 static const TypeInfo pxa2xx_pcmcia_type_info = { 252 .name = TYPE_PXA2XX_PCMCIA, 253 .parent = TYPE_SYS_BUS_DEVICE, 254 .instance_size = sizeof(PXA2xxPCMCIAState), 255 .instance_init = pxa2xx_pcmcia_initfn, 256 }; 257 258 static void pxa2xx_pcmcia_register_types(void) 259 { 260 type_register_static(&pxa2xx_pcmcia_type_info); 261 } 262 263 type_init(pxa2xx_pcmcia_register_types)