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include/galileo/pci.h 4.03 KB
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  /* PCI.h - PCI functions header file */
  
  /* Copyright - Galileo technology. */
  
  #ifndef __INCpcih
  #define __INCpcih
  
  /* includes */
  
  #include "core.h"
  #include "memory.h"
  
  /* According to PCI REV 2.1 MAX agents allowed on the bus are -21- */
  #define PCI_MAX_DEVICES 22
  
  
  /* Macros */
  #define     SELF                    32
  
  /* Defines for the access regions. */
  #define     PREFETCH_ENABLE                 BIT12
  #define     PREFETCH_DISABLE                NO_BIT
  #define     DELAYED_READ_ENABLE             BIT13
  /* #define     CACHING_ENABLE                  BIT14 */
  /* aggressive prefetch: PCI slave prefetch two burst in advance*/
  #define     AGGRESSIVE_PREFETCH              BIT16
  /* read line aggresive prefetch: PCI slave prefetch two burst in advance*/
  #define     READ_LINE_AGGRESSIVE_PREFETCH   BIT17
  /* read multiple aggresive prefetch: PCI slave prefetch two burst in advance*/
  #define     READ_MULTI_AGGRESSIVE_PREFETCH  BIT18
  #define     MAX_BURST_4                     NO_BIT
  #define     MAX_BURST_8                     BIT20  /* Bits[21:20] = 01 */
  #define     MAX_BURST_16                    BIT21  /* Bits[21:20] = 10 */
  #define     PCI_BYTE_SWAP                   NO_BIT /* Bits[25:24] = 00 */
  #define     PCI_NO_SWAP                     BIT24  /* Bits[25:24] = 01 */
  #define     PCI_BYTE_AND_WORD_SWAP          BIT25  /* Bits[25:24] = 10 */
  #define     PCI_WORD_SWAP                  (BIT24 | BIT25) /* Bits[25:24] = 11 */
  #define     PCI_ACCESS_PROTECT              BIT28
  #define     PCI_WRITE_PROTECT               BIT29
  
  /* typedefs */
  
  typedef enum __pciAccessRegions{REGION0,REGION1,REGION2,REGION3,REGION4,REGION5,
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  				REGION6,REGION7} PCI_ACCESS_REGIONS;
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  typedef enum __pciAgentPrio{LOW_AGENT_PRIO,HI_AGENT_PRIO} PCI_AGENT_PRIO;
  typedef enum __pciAgentPark{PARK_ON_AGENT,DONT_PARK_ON_AGENT} PCI_AGENT_PARK;
  
  typedef enum __pciSnoopType{PCI_NO_SNOOP,PCI_SNOOP_WT,PCI_SNOOP_WB}
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  			    PCI_SNOOP_TYPE;
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  typedef enum __pciSnoopRegion{PCI_SNOOP_REGION0,PCI_SNOOP_REGION1,
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  			      PCI_SNOOP_REGION2,PCI_SNOOP_REGION3}
  			      PCI_SNOOP_REGION;
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  typedef enum __memPciHost{PCI_HOST0,PCI_HOST1} PCI_HOST;
  typedef enum __memPciRegion{PCI_REGION0,PCI_REGION1,
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  			 PCI_REGION2,PCI_REGION3,
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  			 PCI_IO}
  			 PCI_REGION;
  
  /* read/write configuration registers on local PCI bus. */
  void pciWriteConfigReg(PCI_HOST host, unsigned int regOffset,
  		       unsigned int pciDevNum, unsigned int data);
  unsigned int pciReadConfigReg (PCI_HOST host, unsigned int regOffset,
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  			       unsigned int pciDevNum);
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  /* read/write configuration registers on another PCI bus. */
  void pciOverBridgeWriteConfigReg(PCI_HOST host,
  				 unsigned int regOffset,
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  				 unsigned int pciDevNum,
  				 unsigned int busNum,unsigned int data);
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  unsigned int pciOverBridgeReadConfigReg(PCI_HOST host,
  					unsigned int regOffset,
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  					unsigned int pciDevNum,
  					unsigned int busNum);
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  /*      Master`s memory space   */
  bool pciMapSpace(PCI_HOST host, PCI_REGION region,
  		unsigned int remapBase,
  		unsigned int deviceBase,
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  		unsigned int deviceLength);
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  unsigned int pciGetSpaceBase(PCI_HOST host, PCI_REGION region);
  unsigned int pciGetSpaceSize(PCI_HOST host, PCI_REGION region);
  
  /*      Slave`s memory space   */
  void pciMapMemoryBank(PCI_HOST host, MEMORY_BANK bank,
  		      unsigned int pci0Dram0Base, unsigned int pci0Dram0Size);
  
  /* PCI region options */
  
  bool  pciSetRegionFeatures(PCI_HOST host, PCI_ACCESS_REGIONS region,
  	unsigned int features, unsigned int baseAddress,
  	unsigned int regionLength);
  
  void  pciDisableAccessRegion(PCI_HOST host, PCI_ACCESS_REGIONS region);
  
  /* PCI arbiter */
  
  bool pciArbiterEnable(PCI_HOST host);
  bool pciArbiterDisable(PCI_HOST host);
  bool pciParkingDisable(PCI_HOST host, PCI_AGENT_PARK internalAgent,
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  			PCI_AGENT_PARK externalAgent0,
  			PCI_AGENT_PARK externalAgent1,
  			PCI_AGENT_PARK externalAgent2,
  			PCI_AGENT_PARK externalAgent3,
  			PCI_AGENT_PARK externalAgent4,
  			PCI_AGENT_PARK externalAgent5);
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  bool pciSetRegionSnoopMode(PCI_HOST host, PCI_SNOOP_REGION region,
  			    PCI_SNOOP_TYPE snoopType,
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  			    unsigned int baseAddress,
  			    unsigned int regionLength);
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  #endif /* __INCpcih */