hw/sh_pci.c

   1 /*
   2  * SuperH on-chip PCIC emulation.
   3  *
   4  * Copyright (c) 2008 Takashi YOSHII
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "hw.h"
  25 #include "sh.h"
  26 #include "pci.h"
  27 #include "bswap.h"
  28
  29 typedef struct {
  30     PCIBus *bus;
  31     PCIDevice *dev;
  32     uint32_t regbase;
  33     uint32_t iopbase;
  34     uint32_t membase;
  35     uint32_t par;
  36     uint32_t mbr;
  37     uint32_t iobr;
  38 } SHPCIC;
  39
  40 static void sh_pci_reg_write (void *p, target_phys_addr_t addr, uint32_t val)
  41 {
  42     SHPCIC *pcic = p;
  43     switch(addr) {
  44     case 0 ... 0xfc:
  45         cpu_to_le32w((uint32_t*)(pcic->dev->config + addr), val);
  46         break;
  47     case 0x1c0:
  48         pcic->par = val;
  49         break;
  50     case 0x1c4:
  51         pcic->mbr = val;
  52         break;
  53     case 0x1c8:
  54         pcic->iobr = val;
  55         break;
  56     case 0x220:
  57         pci_data_write(pcic->bus, pcic->par, val, 4);
  58         break;
  59     }
  60 }
  61
  62 static uint32_t sh_pci_reg_read (void *p, target_phys_addr_t addr)
  63 {
  64     SHPCIC *pcic = p;
  65     switch(addr) {
  66     case 0 ... 0xfc:
  67         return le32_to_cpup((uint32_t*)(pcic->dev->config + addr));
  68     case 0x1c0:
  69         return pcic->par;
  70     case 0x220:
  71         return pci_data_read(pcic->bus, pcic->par, 4);
  72     }
  73     return 0;
  74 }
  75
  76 static void sh_pci_data_write (SHPCIC *pcic, target_phys_addr_t addr,
  77                                uint32_t val, int size)
  78 {
  79     pci_data_write(pcic->bus, addr + pcic->mbr, val, size);
  80 }
  81
  82 static uint32_t sh_pci_mem_read (SHPCIC *pcic, target_phys_addr_t addr,
  83                                  int size)
  84 {
  85     return pci_data_read(pcic->bus, addr + pcic->mbr, size);
  86 }
  87
  88 static void sh_pci_writeb (void *p, target_phys_addr_t addr, uint32_t val)
  89 {
  90     sh_pci_data_write(p, addr, val, 1);
  91 }
  92
  93 static void sh_pci_writew (void *p, target_phys_addr_t addr, uint32_t val)
  94 {
  95     sh_pci_data_write(p, addr, val, 2);
  96 }
  97
  98 static void sh_pci_writel (void *p, target_phys_addr_t addr, uint32_t val)
  99 {
 100     sh_pci_data_write(p, addr, val, 4);
 101 }
 102
 103 static uint32_t sh_pci_readb (void *p, target_phys_addr_t addr)
 104 {
 105     return sh_pci_mem_read(p, addr, 1);
 106 }
 107
 108 static uint32_t sh_pci_readw (void *p, target_phys_addr_t addr)
 109 {
 110     return sh_pci_mem_read(p, addr, 2);
 111 }
 112
 113 static uint32_t sh_pci_readl (void *p, target_phys_addr_t addr)
 114 {
 115     return sh_pci_mem_read(p, addr, 4);
 116 }
 117
 118 static int sh_pci_addr2port(SHPCIC *pcic, target_phys_addr_t addr)
 119 {
 120     return addr + pcic->iobr;
 121 }
 122
 123 static void sh_pci_outb (void *p, target_phys_addr_t addr, uint32_t val)
 124 {
 125     cpu_outb(NULL, sh_pci_addr2port(p, addr), val);
 126 }
 127
 128 static void sh_pci_outw (void *p, target_phys_addr_t addr, uint32_t val)
 129 {
 130     cpu_outw(NULL, sh_pci_addr2port(p, addr), val);
 131 }
 132
 133 static void sh_pci_outl (void *p, target_phys_addr_t addr, uint32_t val)
 134 {
 135     cpu_outl(NULL, sh_pci_addr2port(p, addr), val);
 136 }
 137
 138 static uint32_t sh_pci_inb (void *p, target_phys_addr_t addr)
 139 {
 140     return cpu_inb(NULL, sh_pci_addr2port(p, addr));
 141 }
 142
 143 static uint32_t sh_pci_inw (void *p, target_phys_addr_t addr)
 144 {
 145     return cpu_inw(NULL, sh_pci_addr2port(p, addr));
 146 }
 147
 148 static uint32_t sh_pci_inl (void *p, target_phys_addr_t addr)
 149 {
 150     return cpu_inl(NULL, sh_pci_addr2port(p, addr));
 151 }
 152
 153 typedef struct {
 154     CPUReadMemoryFunc *r[3];
 155     CPUWriteMemoryFunc *w[3];
 156 } MemOp;
 157
 158 static MemOp sh_pci_reg = {
 159     { NULL, NULL, sh_pci_reg_read },
 160     { NULL, NULL, sh_pci_reg_write },
 161 };
 162
 163 static MemOp sh_pci_mem = {
 164     { sh_pci_readb, sh_pci_readw, sh_pci_readl },
 165     { sh_pci_writeb, sh_pci_writew, sh_pci_writel },
 166 };
 167
 168 static MemOp sh_pci_iop = {
 169     { sh_pci_inb, sh_pci_inw, sh_pci_inl },
 170     { sh_pci_outb, sh_pci_outw, sh_pci_outl },
 171 };
 172
 173 PCIBus *sh_pci_register_bus(pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
 174                             qemu_irq *pic, int devfn_min, int nirq)
 175 {
 176     SHPCIC *p;
 177     int mem, reg, iop;
 178
 179     p = qemu_mallocz(sizeof(SHPCIC));
 180     p->bus = pci_register_bus(set_irq, map_irq, pic, devfn_min, nirq);
 181
 182     p->dev = pci_register_device(p->bus, "SH PCIC", sizeof(PCIDevice),
 183                                  -1, NULL, NULL);
 184     p->regbase = 0x1e200000;
 185     p->iopbase = 0x1e240000;
 186     p->membase = 0xfd000000;
 187     reg = cpu_register_io_memory(0, sh_pci_reg.r, sh_pci_reg.w, p);
 188     mem = cpu_register_io_memory(0, sh_pci_mem.r, sh_pci_mem.w, p);
 189     iop = cpu_register_io_memory(0, sh_pci_iop.r, sh_pci_iop.w, p);
 190     cpu_register_physical_memory(p->regbase, 0x224, reg);
 191     cpu_register_physical_memory(p->iopbase, 0x40000, iop);
 192     cpu_register_physical_memory(p->membase, 0x1000000, mem);
 193
 194     p->dev->config[0x00] = 0x54; // HITACHI
 195     p->dev->config[0x01] = 0x10; //
 196     p->dev->config[0x02] = 0x0e; // SH7751R
 197     p->dev->config[0x03] = 0x35; //
 198     p->dev->config[0x04] = 0x80;
 199     p->dev->config[0x05] = 0x00;
 200     p->dev->config[0x06] = 0x90;
 201     p->dev->config[0x07] = 0x02;
 202
 203     return p->bus;
 204 }
 205