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31 * PCI Config space implementation.
34 #ifndef __PCICONFIGALL_HH__
35 #define __PCICONFIGALL_HH__
37 #include "mem/functional_mem/functional_memory.hh"
38 #include "dev/pcireg.h"
40 static const uint32_t MAX_PCI_DEV = 32;
41 static const uint32_t MAX_PCI_FUNC = 8;
47 * All of PCI config space needs to return -1 on Tsunami, except
48 * the devices that exist. This device maps the entire bus config
49 * space and passes the requests on to TsunamiPCIDev devices as
52 class PciConfigAll : public FunctionalMemory
56 static const Addr size = 0xffffff;
59 * Pointers to all the devices that are registered with this
60 * particular config space.
62 PciDev* devices[MAX_PCI_DEV][MAX_PCI_FUNC];
66 * Constructor for PCIConfigAll
67 * @param name name of the object
68 * @param a base address of the write
69 * @param mmu the memory controller
71 PciConfigAll(const std::string &name, Addr a, MemoryController *mmu);
75 * Check if a device exists.
76 * @param pcidev PCI device to check
77 * @param pcifunc PCI function to check
78 * @return true if device exists, false otherwise
80 bool deviceExists(uint32_t pcidev, uint32_t pcifunc)
81 { return devices[pcidev][pcifunc] != NULL ? true : false; }
84 * Registers a device with the config space object.
85 * @param pcidev PCI device to register
86 * @param pcifunc PCI function to register
87 * @param device device to register
89 void registerDevice(uint8_t pcidev, uint8_t pcifunc, PciDev *device)
90 { devices[pcidev][pcifunc] = device; }
93 * Read something in PCI config space. If the device does not exist
94 * -1 is returned, if the device does exist its PciDev::ReadConfig (or the
95 * virtual function that overrides) it is called.
96 * @param req Contains the address of the field to read.
97 * @param data Return the field read.
98 * @return The fault condition of the access.
100 virtual Fault read(MemReqPtr &req, uint8_t *data);
103 * Write to PCI config spcae. If the device does not exit the simulator
104 * panics. If it does it is passed on the PciDev::WriteConfig (or the virtual
105 * function that overrides it).
106 * @param req Contains the address to write to.
107 * @param data The data to write.
108 * @return The fault condition of the access.
111 virtual Fault write(MemReqPtr &req, const uint8_t *data);
114 * Serialize this object to the given output stream.
115 * @param os The stream to serialize to.
117 virtual void serialize(std::ostream &os);
120 * Reconstruct the state of this object from a checkpoint.
121 * @param cp The checkpoint use.
122 * @param section The section name of this object
124 virtual void unserialize(Checkpoint *cp, const std::string §ion);
128 #endif // __PCICONFIGALL_HH__