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bandit: implement Aspen style PCI bridge.

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This commit is contained in:
Maxim Poliakovski 2024-04-07 18:28:18 +02:00
parent dcdfaabedf
commit e7da98b6bd
2 changed files with 59 additions and 17 deletions
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60
devices/common/pci/bandit.cpp
View File

@ -161,7 +161,7 @@ uint32_t BanditHost::read(uint32_t rgn_start, uint32_t offset, int size)
return 0xFFFFFFFFUL; // PCI spec §6.1
case 2: // CONFIG_ADDR
return BYTESWAP_32(this->config_addr);
return (this->is_aspen) ? this->config_addr : BYTESWAP_32(this->config_addr);
default: // I/O space
return pci_io_read_broadcast(offset, size);
@ -193,7 +193,10 @@ void BanditHost::write(uint32_t rgn_start, uint32_t offset, uint32_t value, int
break;
case 2: // CONFIG_ADDR
this->config_addr = BYTESWAP_32(value);
if (this->is_aspen)
this->config_addr = value;
else
BYTESWAP_32(value);
break;
default: // I/O space
@ -218,20 +221,23 @@ inline void BanditHost::cfg_setup(uint32_t offset, int size, int &bus_num,
}
details.flags = PCI_CONFIG_TYPE_0;
bus_num = 0; // use dummy value for bus number
uint32_t idsel = this->config_addr & 0xFFFFF800U;
if (!SINGLE_BIT_SET(idsel)) {
for (dev_num = -1, idsel = this->config_addr; idsel; idsel >>= 1, dev_num++) {}
LOG_F(ERROR, "%s: config_addr 0x%08x does not contain valid IDSEL",
this->name.c_str(), (uint32_t)this->config_addr);
device = NULL;
return;
if (is_aspen)
dev_num = (this->config_addr >> 11) + 11; // IDSEL = 1 << (dev_num + 11)
else {
uint32_t idsel = this->config_addr & 0xFFFFF800U;
if (!SINGLE_BIT_SET(idsel)) {
for (dev_num = -1, idsel = this->config_addr; idsel; idsel >>= 1, dev_num++) {}
LOG_F(ERROR, "%s: config_addr 0x%08x does not contain valid IDSEL",
this->name.c_str(), (uint32_t)this->config_addr);
device = NULL;
return;
}
dev_num = WHAT_BIT_SET(idsel);
}
dev_num = WHAT_BIT_SET(idsel);
device = pci_find_device(dev_num, fun_num);
}
int BanditHost::device_postinit()
{
int BanditHost::device_postinit() {
std::string pci_dev_name;
static const std::map<std::string, int> pci_slots1 = {
@ -303,6 +309,23 @@ Chaos::Chaos(std::string name) : BanditHost(0)
mem_ctrl->add_mmio_region(0xF0000000UL, 0x01000000, this);
}
AspenPci::AspenPci(std::string name) : BanditHost(1) {
this->name = name;
supports_types(HWCompType::PCI_HOST);
this->is_aspen = true;
MemCtrlBase *mem_ctrl = dynamic_cast<MemCtrlBase *>
(gMachineObj->get_comp_by_type(HWCompType::MEM_CTRL));
// add memory mapped I/O region for Aspen PCI control registers
// This region has the following layout:
// base_addr + 0x800000 --> CONFIG_ADDR
// base_addr + 0xC00000 --> CONFIG_DATA
mem_ctrl->add_mmio_region(0xF2000000UL, 0x01000000, this);
}
static const PropMap Bandit1_Properties = {
{"pci_A1",
new StrProperty("")},
@ -346,7 +369,12 @@ static const DeviceDescription Chaos_Descriptor = {
Chaos::create, {}, Chaos_Properties
};
REGISTER_DEVICE(Bandit1, Bandit1_Descriptor);
REGISTER_DEVICE(Bandit2, Bandit2_Descriptor);
REGISTER_DEVICE(PsxPci1, PsxPci1_Descriptor);
REGISTER_DEVICE(Chaos, Chaos_Descriptor);
static const DeviceDescription AspenPci1_Descriptor = {
AspenPci::create, {}, Bandit1_Properties
};
REGISTER_DEVICE(Bandit1, Bandit1_Descriptor);
REGISTER_DEVICE(Bandit2, Bandit2_Descriptor);
REGISTER_DEVICE(PsxPci1, PsxPci1_Descriptor);
REGISTER_DEVICE(AspenPci1, AspenPci1_Descriptor);
REGISTER_DEVICE(Chaos, Chaos_Descriptor);

16
devices/common/pci/bandit.h
View File

@ -85,6 +85,7 @@ public:
protected:
uint32_t config_addr;
int bridge_num;
bool is_aspen = false;
private:
void cfg_setup(uint32_t offset, int size, int &bus_num, int &dev_num,
@ -134,8 +135,8 @@ public:
};
private:
uint32_t base_addr;
std::unique_ptr<BanditPciDevice> my_pci_device;
uint32_t base_addr;
};
/**
@ -151,4 +152,17 @@ public:
};
};
/**
Aspen PCI Bridge HLE emulation class.
*/
class AspenPci : public BanditHost {
public:
AspenPci(std::string name);
~AspenPci() = default;
static std::unique_ptr<HWComponent> create() {
return std::unique_ptr<AspenPci>(new AspenPci("Aspen-PCI1"));
};
};
#endif // BANDIT_PCI_H