pci.c

Freescale MCF5445evb 参考测试代码

        *(uint32*)PCI_HOST_CFG = swap32(0x00000007); 
       
        /* setup Bar0 and 1 */
        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 0x10;     
        *(uint32*)PCI_HOST_CFG = swap32(PCI_TARG3_BAR0); 

        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 0x14;    
        *(uint32*)PCI_HOST_CFG = swap32(PCI_TARG3_BAR1);        
            
        targ3 = PCI_OK;
        
    }
    else
    { 
        /* it is empty */ 
        printf("Target 3(AD19): No device found\n",cfgID);
        
        /* clear IA bit */
        MCF_PCI_PCIISR |= MCF_PCI_PCIISR_IA;
    }

/* Target Device 4 */
    /* Check to see if there is anything out on Slot 4 */   
    /* Form config address for Slot 4*/
    MCF_PCI_PCICAR = (0 |
                      MCF_PCI_PCICAR_DEVNUM(PCI_TARG4_IDSEL)|
                      MCF_PCI_PCICAR_FUNCNUM(0)|
                      MCF_PCI_PCICAR_BUSNUM(0)|
                      MCF_PCI_PCICAR_E);
    
    
    /* Check to see if there is anything out on Slot 4 */
    MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00);     
    cfgID =  swap32(*(uint32*)PCI_HOST_CFG);
    
    if(!(MCF_PCI_PCIISR & MCF_PCI_PCIISR_IA))
    {
        /* There is a device here... configure it */
        printf("Target 4(AD20): Found Device with cfgID = 0x%08X\n",cfgID);
        
         /* set control to mem, io, and master */
        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 4;
        *(uint32*)PCI_HOST_CFG = swap32(0x00000007); 
       
        /* setup Bar0 and 1 */
        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 0x10;     
        *(uint32*)PCI_HOST_CFG = swap32(PCI_TARG4_BAR0); 

        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 0x14;    
        *(uint32*)PCI_HOST_CFG = swap32(PCI_TARG4_BAR1); 
        
        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 0x30;    
        *(uint32*)PCI_HOST_CFG = swap32(PCI_TARG4_BAR1+0x01000000+1); 
        
        targ4 = PCI_OK;     
            
        
    }
    else
    { 
        /* it is empty */ 
        printf("Target 4(AD20): No device found\n",cfgID);
        
        /* clear IA bit */
        MCF_PCI_PCIISR |= MCF_PCI_PCIISR_IA;
    }

#if 0    
/* Target Device 5 */
    /* Check to see if there is anything out on Slot 3 */   
    /* Form config address for Slot 3*/
    MCF_PCI_PCICAR = (0 |
                      MCF_PCI_PCICAR_DEVNUM(PCI_TARG5_IDSEL)|
                      MCF_PCI_PCICAR_FUNCNUM(0)|
                      MCF_PCI_PCICAR_BUSNUM(0)|
                      MCF_PCI_PCICAR_E);
    
    
    /* Check to see if there is anything out on Slot 3 */
    MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00);     
    cfgID =  swap32(*(uint32*)PCI_HOST_CFG);
    
    if(!(MCF_PCI_PCIISR & MCF_PCI_PCIISR_IA))
    {
        /* There is a device here... configure it */
        printf("Target 5(AD21): Found Device with cfgI = 0x%08X\n",cfgID);
        
         /* set control to mem, io, and master */
        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 4;
        *(uint32*)PCI_HOST_CFG = swap32(0x00000007); 
       
        /* setup Bar0 and 1 */
        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 0x10;     
        *(uint32*)PCI_HOST_CFG = swap32(PCI_TARG5_BAR0); 

        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 0x14;    
        *(uint32*)PCI_HOST_CFG = swap32(PCI_TARG5_BAR1);        
            
        targ5 = PCI_OK;
        
    }
    else
    { 
        /* it is empty */ 
        printf("Target 5(AD21): No device found\n",cfgID);
        
        /* clear IA bit */
        MCF_PCI_PCIISR |= MCF_PCI_PCIISR_IA;
    }
    
#endif    
/* Target Device  */
    /* Check to see if we can see ourself */   
    /* Form config address for Slot 3*/
    MCF_PCI_PCICAR = (0 |
                      MCF_PCI_PCICAR_DEVNUM(PCI_TARG0_IDSEL)|
                      MCF_PCI_PCICAR_FUNCNUM(0)|
                      MCF_PCI_PCICAR_BUSNUM(0)|
                      MCF_PCI_PCICAR_E);
    
    
    /* Check to see if there is anything out on Slot 3 */
    MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00);     
    cfgID =  swap32(*(uint32*)PCI_HOST_CFG);
    
    if(!(MCF_PCI_PCIISR & MCF_PCI_PCIISR_IA))
    {
        /* There is a device here... configure it */
        printf("Target 0(AD16): Found Device with cfgID = 0x%08X\n",cfgID);
#if 0        
         /* set control to mem, io, and master */
        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 4;
        *(uint32*)PCI_HOST_CFG = swap32(0x00000007); 
       
        /* setup Bar0 and 1 */
        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 0x10;     
        *(uint32*)PCI_HOST_CFG = swap32(PCI_TARG5_BAR0); 

        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 0x14;    
        *(uint32*)PCI_HOST_CFG = swap32(PCI_TARG5_BAR1);        
            
        targ5 = PCI_OK;
#endif        
        
    }
    else
    { 
        /* it is empty */ 
        printf("Target 0(AD16): No device found\n",cfgID);
        
        /* clear IA bit */
        MCF_PCI_PCIISR |= MCF_PCI_PCIISR_IA;
    }
    
    
    
    
    
    
    MCF_PCI_PCICAR &= ~(MCF_PCI_PCICAR_E);

    /* turn on initiator abort interrupt */
    MCF_PCI_PCIICR |= MCF_PCI_PCIICR_IAE;
    
}

/*
** ===================================================================
**   Function    : pciGetVendorName
**
**   Description : Retrieve vendor short and full names from database.
**                 The function will return pointers to the short and 
**                 full name of the vendor of a PCI card described by 
**                 a filled out PCI configuration header structure.
**                 *vendorshort and *vendorfull will point to these 
**                 name when the function returned. Pass **vendorshort
**                 or **vendorfull as NULL if you only need one of the
**                 names.
**
**   Parameters
**   ----------   
**   -device     : Pointer to a valid PCI configuration header structure.
**   -vendorshort: Pointer to a pointer that will point to the vendor 
**                 short name
**   -vendorfull : Pointer to a pointer that will point to the vendor 
**                 full name
**
**   Return Value: PCI error code
**                
** ===================================================================
*/

int pciGetVendorName (pci_device * device, char **vendorshort, char **vendorfull)
{
    int i;
    
    for (i=0; i<PCI_VENTABLE_LEN; i++) {
        if (PciVenTable[i].VenId == device->vendorId) {
            if (vendorshort != NULL) {
                *vendorshort = PciVenTable[i].VenShort;
            }
            if (vendorfull != NULL) {
                *vendorfull = PciVenTable[i].VenFull;
            }
            
            return PCI_OK;
        }
    }
    
    return PCI_NO_DEV;
}
/*
** ===================================================================
**   Function    : pciGetDevName
**
**   Description : Retrieve device name and description from database. 
**                 The function will return pointers to the device 
**                 name and description of a PCI card described by a 
**                 filled out PCI configuration header structure.
**                 *devname and *devdesc will point to these name when
**                 the function returned. Pass **devname or **devdesc 
**                 as NULL if you only need one of the names.
**
**   Parameters
**   ----------   
**   -device     : Pointer to a valid PCI configuration header structure.
**   -devname    : Pointer to a pointer that will point to the device 
**                 name.
**   -devdesc    : Pointer to a pointer that will point to the device 
**                 description.
**
**   Return Value: PCI error code
**                
** ===================================================================
*/
int pciGetDevName (pci_device * device, char **devname, char **devdesc)
{
    int i;
    
    for (i=0; i<PCI_DEVTABLE_LEN; i++) {
        if (PciDevTable[i].VenId == device->vendorId) {
            if (PciDevTable[i].DevId == device->deviceId) {
                if (devname != NULL) {
                    *devname = PciDevTable[i].Chip;
                }
                if (devdesc != NULL) {
                    *devdesc = PciDevTable[i].ChipDesc;
                }
                
                return PCI_OK;
            }
        }
    }
    
    return PCI_NO_DEV;
}
/*
** ===================================================================
**   Function    : pciGetClassName
**
**   Description : Retrieve device class, subclass and programming 
**                 interface description from database.
**                 The function will return pointers to the class, 
**                 subclass and programming interface description of a
**                 PCI card described by a filled out PCI 
**                 configuration header structure.
**
**   Parameters
**   ----------   
**   -device     : Pointer to a valid PCI configuration header structure.
**   -basedesc   : Pointer to a pointer that will point to the class
**                 description.
**   -subdesc    : Pointer to a pointer that will point to the subclass
**                 description.
**   -progdesc   : Pointer to a pointer that will point to the programming
**                 interface description.
**
**   Return Value: PCI error code
**                
** ===================================================================
*/
int pciGetClassName (pci_device * device, char **basedesc, char **subdesc, char **progdesc)
{
    int i;
    
    for (i=0; i<PCI_CLASSCODETABLE_LEN; i++) {
        if (PciClassCodeTable[i].BaseClass == device->classCode) {
            if (basedesc != NULL) {
                *basedesc = PciClassCodeTable[i].BaseDesc;
            }
            if (PciClassCodeTable[i].SubClass == device->subClass) {
                if (subdesc != NULL) {
                    *subdesc = PciClassCodeTable[i].SubDesc;
                }
                if (PciClassCodeTable[i].ProgIf == device->progIf) {
                    if (progdesc != NULL) {
                        *progdesc = PciClassCodeTable[i].ProgDesc;
                    }
                                    
                    return PCI_OK;
                }
            }
        }
    }
    
    return PCI_NO_DEV;
}
/*
** ===================================================================
**   Function    : pciGetConfHeader
**
**   Description : Retrieve PCI Configuration Header from a PCI card.
**                 The function reads the PCI Configuration Header 
**                 from a PCI card and fills the result in the 
**                 structure pointed to by *pciconfheader. This 
**                 function can also be used to detect if a slot is 
**                 populated with a PCI card. PCI_NO_DEV will be 
**                 returned if no card is found.
**
**   Parameters
**   ----------   
**   -slot          : Slot number (also the IDSEL AD line).
**   -fctnum        : PCI card function to read from. Usually 0.
**   -pciconfheader : Pointer to a PCIConfHeader_t which will be filled.
**
**   Return Value   : PCI error code
**                
** ===================================================================
*/
int pciGetConfHeader (int slot, int fctnum, pci_device * device)
{
    int i;
    unsigned int cfgID;
#ifdef PCI_TEST_SMALL
    uint32  temp;
#endif    

    /* Check to see if there is anything out on Slot 1 */   
    /* Form config address for Slot 1*/
    MCF_PCI_PCICAR = (0 | MCF_PCI_PCICAR_DEVNUM(slot)|
                      MCF_PCI_PCICAR_FUNCNUM(0)|
                      MCF_PCI_PCICAR_BUSNUM(0)|
                      MCF_PCI_PCICAR_E);
    
    
    /* Check to see if there is anything out on Slot 1 */
    MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00);     
    cfgID =  swap32(*(uint32*)PCI_HOST_CFG);

    if(!(MCF_PCI_PCIISR & MCF_PCI_PCIISR_IA))
    {
    
#ifdef PCI_TEST_SMALL
        for(i=0;i<16;i++)
        {
 
            temp = swap32(*(uint32*)PCI_HOST_CFG);
            printf("Reg %x value %x", i, temp);
            MCF_PCI_PCICAR = MCF_PCI_PCICAR + 4;
        }
#else    
        /* There is a device here... get header */
        device->deviceId = (uint16)((cfgID & 0xFFFF0000)>>16);
        device->vendorId = (uint16)((cfgID & 0x0000FFFF));
        
        MCF_PCI_PCICAR = (MCF_PCI_PCICAR & 0xFFFFFF00) + 0x04;
        device->status   = (uint16)(((swap32(*(uint32*)PCI_HOST_CFG)) & 0xFFFF0000)>>16);
        device->command  = (uint16)(((swap32(*(uint32*)PCI_HOST_CFG)) & 0x0000FFFF));