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Bandit: use common PCI configuration code.

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This commit is contained in:
Maxim Poliakovski 2022-03-13 20:55:29 +01:00
parent 3bce7bb1ea
commit 73aa68bc30
2 changed files with 12 additions and 41 deletions
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43
devices/common/pci/bandit.cpp
View File

@ -30,16 +30,15 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
#include <cinttypes>
Bandit::Bandit(int bridge_num, std::string name) : MMIODevice(), PCIHost()
Bandit::Bandit(int bridge_num, std::string name) : PCIHost(), PCIDevice(name)
{
this->base_addr = 0xF0000000 + ((bridge_num & 3) << 25);
this->name = name;
MemCtrlBase *mem_ctrl = dynamic_cast<MemCtrlBase *>
(gMachineObj->get_comp_by_type(HWCompType::MEM_CTRL));
// add memory mapped I/O region for Bandit control registers
// This region has the following format:
// This region has the following layout:
// base_addr + 0x000000 --> I/O space
// base_addr + 0x800000 --> CONFIG_ADDR
// base_addr + 0xC00000 --> CONFIG_DATA
@ -47,15 +46,15 @@ Bandit::Bandit(int bridge_num, std::string name) : MMIODevice(), PCIHost()
mem_ctrl->add_mmio_region(base_addr, 0x01000000, this);
// prepare the PCI config header
std::memset(this->my_pci_cfg_hdr, 0, sizeof(this->my_pci_cfg_hdr));
WRITE_DWORD_BE_A(&this->my_pci_cfg_hdr[0x00], 0x0001106B);
WRITE_DWORD_BE_A(&this->my_pci_cfg_hdr[0x08], 0x06000003);
this->vendor_id = PCI_VENDOR_APPLE;
this->device_id = 0x0001;
this->class_rev = 0x06000003;
this->cache_ln_sz = 8;
this->command = 0x16;
// mask array for protecting accesses to the PCI config header
std::memset(this->my_cfg_mask, 0xFF, sizeof(this->my_pci_cfg_hdr));
WRITE_DWORD_BE_A(&this->my_cfg_mask[0x00], 0); // make DeviceID/VendorID read-only
WRITE_DWORD_BE_A(&this->my_cfg_mask[0x08], 0); // make ClassCode/Revision read-only
WRITE_DWORD_BE_A(&this->my_cfg_mask[0x0C], 0xFF00FFFFUL); // make HeaderType read-only
// make several PCI config space registers read-only
this->pci_wr_cmd = [](uint16_t cmd) {}; // command register
this->pci_wr_cache_lnsz = [](uint8_t val) {}; // cache line size register
}
uint32_t Bandit::read(uint32_t reg_start, uint32_t offset, int size)
@ -101,7 +100,7 @@ uint32_t Bandit::read(uint32_t reg_start, uint32_t offset, int size)
} else { // I/O space access
LOG_F(WARNING, "%s: I/O space write not implemented yet", this->name.c_str());
}
return BYTESWAP_32(result);
return result;
}
void Bandit::write(uint32_t reg_start, uint32_t offset, uint32_t value, int size)
@ -148,23 +147,3 @@ void Bandit::write(uint32_t reg_start, uint32_t offset, uint32_t value, int size
LOG_F(WARNING, "%s: I/O space write not implemented yet", this->name.c_str());
}
}
uint32_t Bandit::pci_cfg_read(uint32_t reg_offs, uint32_t size)
{
if ((reg_offs & 3) || size != 4) {
LOG_F(WARNING, "%s: non-DWORD access to the config space", this->name.c_str());
}
return read_mem_rev(&this->my_pci_cfg_hdr[reg_offs], size);
}
void Bandit::pci_cfg_write(uint32_t reg_offs, uint32_t value, uint32_t size)
{
if ((reg_offs & 3) || size != 4) {
LOG_F(WARNING, "%s: non-DWORD access to the config space", this->name.c_str());
}
uint32_t mask = read_mem_rev(&my_cfg_mask[reg_offs], size);
uint32_t cur_val = read_mem_rev(&this->my_pci_cfg_hdr[reg_offs], size);
write_mem_rev(&this->my_pci_cfg_hdr[reg_offs], (cur_val & ~mask) | (value & mask), size);
}

10
devices/common/pci/bandit.h
View File

@ -43,7 +43,7 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
/** checks if one bit is set at time, return 0 if not */
#define SINGLE_BIT_SET(val) ((val) && !((val) & ((val)-1)))
class Bandit : public MMIODevice, public PCIHost {//}, public PCIDevice {
class Bandit : public PCIHost, public PCIDevice {
public:
Bandit(int bridge_num, std::string name);
~Bandit() = default;
@ -56,17 +56,9 @@ public:
uint32_t read(uint32_t reg_start, uint32_t offset, int size);
void write(uint32_t reg_start, uint32_t offset, uint32_t value, int size);
protected:
uint32_t pci_cfg_read(uint32_t reg_offs, uint32_t size);
void pci_cfg_write(uint32_t reg_offs, uint32_t value, uint32_t size);
private:
std::string name;
uint32_t base_addr;
uint32_t config_addr;
uint8_t my_pci_cfg_hdr[256];
uint8_t my_cfg_mask[256];
};
#endif // BANDIT_PCI_H