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/* |
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* Cisco router simulation platform. |
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* Copyright (c) 2005,2006 Christophe Fillot. All rights reserved. |
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* |
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* Cirrus Logic PD6729 PCI-to-PCMCIA host adapter. |
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* |
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* TODO: finish the code! (especially extended registers) |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <time.h> |
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#include <errno.h> |
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#include "cpu.h" |
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#include "vm.h" |
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#include "dynamips.h" |
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#include "memory.h" |
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#include "device.h" |
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#include "pci_dev.h" |
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#include "pci_io.h" |
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#define DEBUG_ACCESS 0 |
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/* Cirrus Logic PD6729 PCI vendor/product codes */ |
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#define CLPD6729_PCI_VENDOR_ID 0x1013 |
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#define CLPD6729_PCI_PRODUCT_ID 0x1100 |
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#define CLPD6729_REG_CHIP_REV 0x00 /* Chip Revision */ |
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#define CLPD6729_REG_INT_STATUS 0x01 /* Interface Status */ |
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#define CLPD6729_REG_POWER_CTRL 0x02 /* Power Control */ |
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#define CLPD6729_REG_INTGEN_CTRL 0x03 /* Interrupt & General Control */ |
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#define CLPD6729_REG_CARD_STATUS 0x04 /* Card Status Change */ |
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#define CLPD6729_REG_FIFO_CTRL 0x17 /* FIFO Control */ |
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#define CLPD6729_REG_EXT_INDEX 0x2E /* Extended Index */ |
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/* CLPD6729 private data */ |
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struct clpd6729_data { |
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vm_obj_t vm_obj; |
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struct vdevice dev; |
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struct pci_device *pci_dev; |
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struct pci_io_device *pci_io_dev; |
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/* VM objects present in slots (typically, PCMCIA disks...) */ |
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vm_obj_t *slot_obj[2]; |
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/* Base registers */ |
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m_uint8_t base_index; |
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m_uint8_t base_regs[256]; |
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}; |
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/* Handle access to a base register */ |
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static void clpd6729_base_reg_access(cpu_gen_t *cpu,struct clpd6729_data *d, |
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u_int op_type,m_uint64_t *data) |
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{ |
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u_int slot_id,reg; |
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#if DEBUG_ACCESS |
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if (op_type == MTS_READ) { |
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cpu_log(cpu,"CLPD6729","reading reg 0x%2.2x at pc=0x%llx\n", |
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d->base_index,cpu_get_pc(cpu)); |
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} else { |
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cpu_log(cpu,"CLPD6729","writing reg 0x%2.2x, data=0x%llx at pc=0x%llx\n", |
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d->base_index,*data,cpu_get_pc(cpu)); |
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} |
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#endif |
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if (op_type == MTS_READ) |
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*data = 0; |
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/* Reserved registers */ |
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if (d->base_index >= 0x80) |
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return; |
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/* |
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* Socket A regs: 0x00 to 0x3f |
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* Socket B regs: 0x40 to 0x7f |
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*/ |
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if (d->base_index >= 0x40) { |
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slot_id = 1; |
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reg = d->base_index - 0x40; |
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} else { |
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slot_id = 0; |
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reg = d->base_index; |
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} |
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switch(reg) { |
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case CLPD6729_REG_CHIP_REV: |
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if (op_type == MTS_READ) |
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*data = 0x48; |
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break; |
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case CLPD6729_REG_INT_STATUS: |
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if (op_type == MTS_READ) { |
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if (d->slot_obj[slot_id]) |
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*data = 0xEF; |
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else |
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*data = 0x80; |
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} |
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break; |
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case CLPD6729_REG_INTGEN_CTRL: |
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if (op_type == MTS_READ) |
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*data = 0x40; |
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break; |
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case CLPD6729_REG_EXT_INDEX: |
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if (op_type == MTS_WRITE) { |
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cpu_log(cpu,"CLPD6729","ext reg index 0x%2.2llx at pc=0x%llx\n", |
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*data,cpu_get_pc(cpu)); |
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} |
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break; |
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case CLPD6729_REG_FIFO_CTRL: |
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if (op_type == MTS_READ) |
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*data = 0x80; /* FIFO is empty */ |
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break; |
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default: |
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if (op_type == MTS_READ) |
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*data = d->base_regs[d->base_index]; |
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else |
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d->base_regs[d->base_index] = (m_uint8_t)(*data); |
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} |
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} |
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/* |
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* dev_clpd6729_io_access() |
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*/ |
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static void *dev_clpd6729_io_access(cpu_gen_t *cpu,struct vdevice *dev, |
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m_uint32_t offset,u_int op_size, |
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u_int op_type,m_uint64_t *data) |
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{ |
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struct clpd6729_data *d = dev->priv_data; |
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#if DEBUG_ACCESS |
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if (op_type == MTS_READ) { |
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cpu_log(cpu,dev->name,"reading at offset 0x%x, pc=0x%llx\n", |
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offset,cpu_get_pc(cpu)); |
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} else { |
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cpu_log(cpu,dev->name,"writing at offset 0x%x, pc=0x%llx, data=0x%llx\n", |
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offset,cpu_get_pc(cpu),*data); |
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} |
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#endif |
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switch(offset) { |
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case 0: |
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/* Data register */ |
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clpd6729_base_reg_access(cpu,d,op_type,data); |
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break; |
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case 1: |
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/* Index register */ |
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if (op_type == MTS_READ) |
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*data = d->base_index; |
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else |
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d->base_index = *data; |
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break; |
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} |
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return NULL; |
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} |
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/* Shutdown a CLPD6729 device */ |
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void dev_clpd6729_shutdown(vm_instance_t *vm,struct clpd6729_data *d) |
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{ |
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if (d != NULL) { |
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/* Remove the PCI device */ |
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pci_dev_remove(d->pci_dev); |
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/* Remove the PCI I/O device */ |
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pci_io_remove(d->pci_io_dev); |
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/* Free the structure itself */ |
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free(d); |
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} |
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} |
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/* |
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* dev_clpd6729_init() |
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*/ |
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int dev_clpd6729_init(vm_instance_t *vm, |
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struct pci_bus *pci_bus,int pci_device, |
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struct pci_io_data *pci_io_data, |
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m_uint32_t io_start,m_uint32_t io_end) |
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{ |
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struct clpd6729_data *d; |
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/* Allocate the private data structure */ |
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if (!(d = malloc(sizeof(*d)))) { |
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fprintf(stderr,"CLPD6729: unable to create device.\n"); |
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return(-1); |
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} |
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memset(d,0,sizeof(*d)); |
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vm_object_init(&d->vm_obj); |
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d->vm_obj.name = "clpd6729"; |
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d->vm_obj.data = d; |
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d->vm_obj.shutdown = (vm_shutdown_t)dev_clpd6729_shutdown; |
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dev_init(&d->dev); |
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d->dev.name = "clpd6729"; |
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d->dev.priv_data = d; |
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d->pci_io_dev = pci_io_add(pci_io_data,io_start,io_end,&d->dev, |
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dev_clpd6729_io_access); |
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d->pci_dev = pci_dev_add(pci_bus,"clpd6729", |
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CLPD6729_PCI_VENDOR_ID,CLPD6729_PCI_PRODUCT_ID, |
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pci_device,0,-1,&d->dev,NULL,NULL,NULL); |
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if (!d->pci_io_dev || !d->pci_dev) { |
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fprintf(stderr,"CLPD6729: unable to create PCI devices.\n"); |
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dev_clpd6729_shutdown(vm,d); |
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return(-1); |
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} |
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vm_object_add(vm,&d->vm_obj); |
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#if 1 |
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/* PCMCIA disk test */ |
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if (vm->pcmcia_disk_size[0]) |
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d->slot_obj[0] = dev_pcmcia_disk_init(vm,"disk0",0x40000000ULL,0x200000, |
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vm->pcmcia_disk_size[0],0); |
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if (vm->pcmcia_disk_size[1]) |
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d->slot_obj[1] = dev_pcmcia_disk_init(vm,"disk1",0x44000000ULL,0x200000, |
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vm->pcmcia_disk_size[1],0); |
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#endif |
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#if 0 |
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/* PCMCIA disk test */ |
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if (vm->pcmcia_disk_size[0]) |
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d->slot_obj[0] = dev_pcmcia_disk_init(vm,"disk0",0xd8000000ULL,0x200000, |
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vm->pcmcia_disk_size[0],0); |
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if (vm->pcmcia_disk_size[1]) |
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d->slot_obj[1] = dev_pcmcia_disk_init(vm,"disk1",0xdc000000ULL,0x200000, |
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vm->pcmcia_disk_size[1],0); |
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#endif |
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return(0); |
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} |