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Bandit: implement I/O space transactions.

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This commit is contained in:
Maxim Poliakovski 2022-04-13 22:39:29 +02:00
parent d64f901f85
commit 4bba61a920
1 changed files with 18 additions and 2 deletions
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20
devices/common/pci/bandit.cpp
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@ -133,7 +133,15 @@ uint32_t Bandit::read(uint32_t reg_start, uint32_t offset, int size)
result = this->config_addr; result = this->config_addr;
} }
} else { // I/O space access } else { // I/O space access
LOG_F(WARNING, "%s: I/O space write not implemented yet", this->name.c_str()); // broadcast I/O request to devices that support I/O space
// until a device returns true that means "request accepted"
for (auto& dev : this->io_space_devs) {
if (dev->pci_io_read(offset, size, &result)) {
return result;
}
}
LOG_F(ERROR, "%s: attempt to read from unmapped PCI I/O space, offset=0x%X",
this->name.c_str(), offset);
} }
return result; return result;
} }
@ -179,7 +187,15 @@ void Bandit::write(uint32_t reg_start, uint32_t offset, uint32_t value, int size
this->config_addr = BYTESWAP_32(value); this->config_addr = BYTESWAP_32(value);
} }
} else { // I/O space access } else { // I/O space access
LOG_F(WARNING, "%s: I/O space write not implemented yet", this->name.c_str()); // broadcast I/O request to devices that support I/O space
// until a device returns true that means "request accepted"
for (auto& dev : this->io_space_devs) {
if (dev->pci_io_write(offset, value, size)) {
return;
}
}
LOG_F(ERROR, "%s: attempt to write to unmapped PCI I/O space, offset=0x%X",
this->name.c_str(), offset);
} }
} }