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bandit: Modify address ranges.

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- Increase I/O space from 22 bits (4 MB) to 23 bits (8 MB).
- Add Special Cycles and Interrupt Acknowledge Cycles at 14 MB offset.
- Pass Through range at 16 MB offset is 16 MB size. VGA and 24 bit physical addresses can go here.
- Bandit is 32 MB except for pci1 which has GrandCentral at Bandit's 16 MB offset.
This commit is contained in:
joevt 2024-04-19 04:43:09 -07:00 committed by dingusdev
parent 31323e7bf1
commit ab59a34604
1 changed files with 70 additions and 17 deletions
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87
devices/common/pci/bandit.cpp
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@ -143,8 +143,21 @@ void BanditPciDevice::verbose_address_space()
uint32_t BanditHost::read(uint32_t rgn_start, uint32_t offset, int size)
{
switch (offset >> 22) {
case 3: // CONFIG_DATA
switch (offset >> 21) {
case 0:
case 1:
case 2:
case 3:
// I/O space
return pci_io_read_broadcast(offset & 0x007FFFFF, size);
case 4:
case 5:
// CONFIG_ADDR
return (this->is_aspen) ? this->config_addr : BYTESWAP_32(this->config_addr);
case 6:
// CONFIG_DATA
int bus_num, dev_num, fun_num;
uint8_t reg_offs;
AccessDetails details;
@ -160,18 +173,46 @@ uint32_t BanditHost::read(uint32_t rgn_start, uint32_t offset, int size)
LOG_READ_NON_EXISTENT_PCI_DEVICE();
return 0xFFFFFFFFUL; // PCI spec §6.1
case 2: // CONFIG_ADDR
return (this->is_aspen) ? this->config_addr : BYTESWAP_32(this->config_addr);
case 7:
// Interrupt
LOG_F(ERROR, "%s: Interrupt Acknowledge Cycle 0x%08x unsupported", this->name.c_str(), offset & 0x001FFFFF);
break;
default: // I/O space
return pci_io_read_broadcast(offset, size);
case 8:
case 9:
case 10:
case 11:
case 12:
case 13:
case 14:
// 24-Bit Memory Address
case 15:
// 24-Bit Memory Address or VGA Device Access
LOG_F(ERROR, "%s: Pass-Through read 0x%08x unsupported", this->name.c_str(), offset & 0x00FFFFFF);
break;
}
return 0;
}
void BanditHost::write(uint32_t rgn_start, uint32_t offset, uint32_t value, int size)
{
switch (offset >> 22) {
case 3: // CONFIG_DATA
switch (offset >> 21) {
case 0:
case 1:
case 2:
case 3:
// I/O space
pci_io_write_broadcast(offset & 0x007FFFFF, size, value);
break;
case 4:
case 5:
// CONFIG_ADDR
this->config_addr = (this->is_aspen) ? value : BYTESWAP_32(value);
break;
case 6:
// CONFIG_DATA
int bus_num, dev_num, fun_num;
uint8_t reg_offs;
AccessDetails details;
@ -192,12 +233,23 @@ void BanditHost::write(uint32_t rgn_start, uint32_t offset, uint32_t value, int
LOG_WRITE_NON_EXISTENT_PCI_DEVICE();
break;
case 2: // CONFIG_ADDR
this->config_addr = (this->is_aspen) ? value : BYTESWAP_32(value);
case 7:
// Special
LOG_F(ERROR, "%s: Special Cycle 0x%08x unsupported", this->name.c_str(), offset & 0x001FFFFF);
break;
default: // I/O space
pci_io_write_broadcast(offset, size, value);
case 8:
case 9:
case 10:
case 11:
case 12:
case 13:
case 14:
// 24-Bit Memory Address
case 15:
// 24-Bit Memory Address or VGA Device Access
LOG_F(ERROR, "%s: Pass-Through read 0x%08x unsupported", this->name.c_str(), offset & 0x00FFFFFF);
break;
}
}
@ -252,11 +304,12 @@ Bandit::Bandit(int bridge_num, std::string name, int dev_id, int rev)
// add memory mapped I/O region for Bandit control registers
// This region has the following layout:
// base_addr + 0x000000 --> I/O space
// base_addr + 0x800000 --> CONFIG_ADDR
// base_addr + 0xC00000 --> CONFIG_DATA
// base_addr + 0x1000000 --> pass-through memory space (not included below)
mem_ctrl->add_mmio_region(base_addr, 0x01000000, this);
// base_addr + 0x00000000 --> I/O space
// base_addr + 0x00800000 --> CONFIG_ADDR
// base_addr + 0x00C00000 --> CONFIG_DATA
// base_addr + 0x00E00000 --> Special(W)/Interrupt(R)
// base_addr + 0x01000000 --> pass-through memory space ; grandcentral exists here for pci1
mem_ctrl->add_mmio_region(base_addr, bridge_num == 1 ? 0x01000000 : 0x02000000, this);
// connnect Bandit PCI device
this->my_pci_device = std::unique_ptr<BanditPciDevice>(