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35 lines
950 B
C
35 lines
950 B
C
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#ifndef PCI_DEVICE_H
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#define PCI_DEVICE_H
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#include <cinttypes>
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#include <string>
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#include "mmiodevice.h"
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#include "pcihost.h"
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/* convert little-endian DWORD to big-endian DWORD */
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#define LE2BE(x) (x >> 24) | ((x & 0x00FF0000) >> 8) | ((x & 0x0000FF00) << 8) | (x << 24)
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enum {
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CFG_REG_BAR0 = 0x10 // base address register 0
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};
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class PCIDevice : public MMIODevice {
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public:
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PCIDevice(std::string name) {this->name = name;};
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virtual ~PCIDevice() = default;
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/* configuration space access methods */
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virtual uint32_t pci_cfg_read(uint32_t reg_offs, uint32_t size) = 0;
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virtual void pci_cfg_write(uint32_t reg_offs, uint32_t value, uint32_t size) = 0;
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virtual void set_host(PCIHost *host_instance) = 0;
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protected:
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std::string name; // human-readable device name
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PCIHost *host_instance; // host bridge instance to call back
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uint32_t base_addr; // base address register 0
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};
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#endif /* PCI_DEVICE_H */
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