pci.h
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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,
REGION6,REGION7} PCI_ACCESS_REGIONS;
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}
PCI_SNOOP_TYPE;
typedef enum __pciSnoopRegion{PCI_SNOOP_REGION0,PCI_SNOOP_REGION1,
PCI_SNOOP_REGION2,PCI_SNOOP_REGION3}
PCI_SNOOP_REGION;
typedef enum __memPciHost{PCI_HOST0,PCI_HOST1} PCI_HOST;
typedef enum __memPciRegion{PCI_REGION0,PCI_REGION1,
PCI_REGION2,PCI_REGION3,
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,
unsigned int pciDevNum);
/* read/write configuration registers on another PCI bus. */
void pciOverBridgeWriteConfigReg(PCI_HOST host,
unsigned int regOffset,
unsigned int pciDevNum,
unsigned int busNum,unsigned int data);
unsigned int pciOverBridgeReadConfigReg(PCI_HOST host,
unsigned int regOffset,
unsigned int pciDevNum,
unsigned int busNum);
/* Master`s memory space */
bool pciMapSpace(PCI_HOST host, PCI_REGION region,
unsigned int remapBase,
unsigned int deviceBase,
unsigned int deviceLength);
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,
PCI_AGENT_PARK externalAgent0,
PCI_AGENT_PARK externalAgent1,
PCI_AGENT_PARK externalAgent2,
PCI_AGENT_PARK externalAgent3,
PCI_AGENT_PARK externalAgent4,
PCI_AGENT_PARK externalAgent5);
bool pciSetRegionSnoopMode(PCI_HOST host, PCI_SNOOP_REGION region,
PCI_SNOOP_TYPE snoopType,
unsigned int baseAddress,
unsigned int regionLength);
#endif /* __INCpcih */