4 * Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
5 * VA Linux Systems Japan K.K.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, see <http://www.gnu.org/licenses/>.
28 #define PCI_DPRINTF(fmt, ...) \
29 do { printf("pci_host_data: " fmt , ## __VA_ARGS__); } while (0)
31 #define PCI_DPRINTF(fmt, ...)
36 * bit 16 - 24: bus number
37 * bit 8 - 15: devfun number
38 * bit 0 - 7: offset in configuration space of a given pci device
41 /* the helper functio to get a PCIDeice* for a given pci address */
42 static inline PCIDevice
*pci_dev_find_by_addr(PCIBus
*bus
, uint32_t addr
)
44 uint8_t bus_num
= addr
>> 16;
45 uint8_t devfn
= addr
>> 8;
47 return pci_find_device(bus
, bus_num
, PCI_SLOT(devfn
), PCI_FUNC(devfn
));
50 void pci_data_write(PCIBus
*s
, uint32_t addr
, uint32_t val
, int len
)
52 PCIDevice
*pci_dev
= pci_dev_find_by_addr(s
, addr
);
53 uint32_t config_addr
= addr
& (PCI_CONFIG_SPACE_SIZE
- 1);
58 PCI_DPRINTF("%s: %s: addr=%02" PRIx32
" val=%08" PRIx32
" len=%d\n",
59 __func__
, pci_dev
->name
, config_addr
, val
, len
);
60 pci_dev
->config_write(pci_dev
, config_addr
, val
, len
);
63 uint32_t pci_data_read(PCIBus
*s
, uint32_t addr
, int len
)
65 PCIDevice
*pci_dev
= pci_dev_find_by_addr(s
, addr
);
66 uint32_t config_addr
= addr
& (PCI_CONFIG_SPACE_SIZE
- 1);
69 assert(len
== 1 || len
== 2 || len
== 4);
74 val
= pci_dev
->config_read(pci_dev
, config_addr
, len
);
75 PCI_DPRINTF("%s: %s: addr=%02"PRIx32
" val=%08"PRIx32
" len=%d\n",
76 __func__
, pci_dev
->name
, config_addr
, val
, len
);
81 static void pci_host_config_write(ReadWriteHandler
*handler
,
82 pcibus_t addr
, uint32_t val
, int len
)
84 PCIHostState
*s
= container_of(handler
, PCIHostState
, conf_handler
);
86 PCI_DPRINTF("%s addr %" FMT_PCIBUS
" %d val %"PRIx32
"\n",
87 __func__
, addr
, len
, val
);
88 #ifdef TARGET_WORDS_BIGENDIAN
89 val
= qemu_bswap_len(val
, len
);
94 static uint32_t pci_host_config_read(ReadWriteHandler
*handler
,
95 pcibus_t addr
, int len
)
97 PCIHostState
*s
= container_of(handler
, PCIHostState
, conf_handler
);
98 uint32_t val
= s
->config_reg
;
99 #ifdef TARGET_WORDS_BIGENDIAN
100 val
= qemu_bswap_len(val
, len
);
102 PCI_DPRINTF("%s addr %" FMT_PCIBUS
" len %d val %"PRIx32
"\n",
103 __func__
, addr
, len
, val
);
107 static void pci_host_config_write_noswap(ReadWriteHandler
*handler
,
108 pcibus_t addr
, uint32_t val
, int len
)
110 PCIHostState
*s
= container_of(handler
, PCIHostState
, conf_noswap_handler
);
112 PCI_DPRINTF("%s addr %" FMT_PCIBUS
" %d val %"PRIx32
"\n",
113 __func__
, addr
, len
, val
);
117 static uint32_t pci_host_config_read_noswap(ReadWriteHandler
*handler
,
118 pcibus_t addr
, int len
)
120 PCIHostState
*s
= container_of(handler
, PCIHostState
, conf_noswap_handler
);
121 uint32_t val
= s
->config_reg
;
123 PCI_DPRINTF("%s addr %" FMT_PCIBUS
" len %d val %"PRIx32
"\n",
124 __func__
, addr
, len
, val
);
128 static void pci_host_data_write(ReadWriteHandler
*handler
,
129 pcibus_t addr
, uint32_t val
, int len
)
131 PCIHostState
*s
= container_of(handler
, PCIHostState
, data_handler
);
132 #ifdef TARGET_WORDS_BIGENDIAN
133 val
= qemu_bswap_len(val
, len
);
135 PCI_DPRINTF("write addr %" FMT_PCIBUS
" len %d val %x\n",
137 if (s
->config_reg
& (1u << 31))
138 pci_data_write(s
->bus
, s
->config_reg
| (addr
& 3), val
, len
);
141 static uint32_t pci_host_data_read(ReadWriteHandler
*handler
,
142 pcibus_t addr
, int len
)
144 PCIHostState
*s
= container_of(handler
, PCIHostState
, data_handler
);
146 if (!(s
->config_reg
& (1 << 31)))
148 val
= pci_data_read(s
->bus
, s
->config_reg
| (addr
& 3), len
);
149 PCI_DPRINTF("read addr %" FMT_PCIBUS
" len %d val %x\n",
151 #ifdef TARGET_WORDS_BIGENDIAN
152 val
= qemu_bswap_len(val
, len
);
157 static void pci_host_init(PCIHostState
*s
)
159 s
->conf_handler
.write
= pci_host_config_write
;
160 s
->conf_handler
.read
= pci_host_config_read
;
161 s
->conf_noswap_handler
.write
= pci_host_config_write_noswap
;
162 s
->conf_noswap_handler
.read
= pci_host_config_read_noswap
;
163 s
->data_handler
.write
= pci_host_data_write
;
164 s
->data_handler
.read
= pci_host_data_read
;
167 int pci_host_conf_register_mmio(PCIHostState
*s
)
170 return cpu_register_io_memory_simple(&s
->conf_handler
);
173 int pci_host_conf_register_mmio_noswap(PCIHostState
*s
)
176 return cpu_register_io_memory_simple(&s
->conf_noswap_handler
);
179 void pci_host_conf_register_ioport(pio_addr_t ioport
, PCIHostState
*s
)
182 register_ioport_simple(&s
->conf_noswap_handler
, ioport
, 4, 4);
185 int pci_host_data_register_mmio(PCIHostState
*s
)
188 return cpu_register_io_memory_simple(&s
->data_handler
);
191 void pci_host_data_register_ioport(pio_addr_t ioport
, PCIHostState
*s
)
194 register_ioport_simple(&s
->data_handler
, ioport
, 4, 1);
195 register_ioport_simple(&s
->data_handler
, ioport
, 4, 2);
196 register_ioport_simple(&s
->data_handler
, ioport
, 4, 4);