u-boot/board/evb64260/pci.c

/* PCI.c - PCI functions */

/* Copyright - Galileo technology. */

#include <common.h>
#include <pci.h>

#include <galileo/pci.h>

static const unsigned char pci_irq_swizzle[2][PCI_MAX_DEVICES] = {
#ifdef CONFIG_ZUMA_V2
    {0,0,0,0,0,0,0,29, [8 ... PCI_MAX_DEVICES-1]=0},
    {0,0,0,0,0,0,0,28, [8 ... PCI_MAX_DEVICES-1]=0}
#else	/* EVB??? This is a guess */
    {0,0,0,0,0,0,0,27,27, [9 ... PCI_MAX_DEVICES-1]=0},
    {0,0,0,0,0,0,0,29,29, [9 ... PCI_MAX_DEVICES-1]=0}
#endif
};

static const unsigned int pci_p2p_configuration_reg[]={
    PCI_0P2P_CONFIGURATION, PCI_1P2P_CONFIGURATION};

static const unsigned int pci_configuration_address[]={
    PCI_0CONFIGURATION_ADDRESS, PCI_1CONFIGURATION_ADDRESS};

static const unsigned int pci_configuration_data[]={
    PCI_0CONFIGURATION_DATA_VIRTUAL_REGISTER,
    PCI_1CONFIGURATION_DATA_VIRTUAL_REGISTER};

static const unsigned int pci_error_cause_reg[]={
    PCI_0ERROR_CAUSE, PCI_1ERROR_CAUSE};

static const unsigned int pci_arbiter_control[]={
    PCI_0ARBITER_CONTROL, PCI_1ARBITER_CONTROL};

static const unsigned int pci_snoop_control_base_0_low[]={
    PCI_0SNOOP_CONTROL_BASE_0_LOW, PCI_1SNOOP_CONTROL_BASE_0_LOW};
static const unsigned int pci_snoop_control_top_0[]={
    PCI_0SNOOP_CONTROL_TOP_0, PCI_1SNOOP_CONTROL_TOP_0};

static const unsigned int pci_access_control_base_0_low[]={
    PCI_0ACCESS_CONTROL_BASE_0_LOW, PCI_1ACCESS_CONTROL_BASE_0_LOW};
static const unsigned int pci_access_control_top_0[]={
    PCI_0ACCESS_CONTROL_TOP_0, PCI_1ACCESS_CONTROL_TOP_0};

static const unsigned int pci_scs_bank_size[2][4] = {
    {PCI_0SCS_0_BANK_SIZE, PCI_0SCS_1_BANK_SIZE,
     PCI_0SCS_2_BANK_SIZE, PCI_0SCS_3_BANK_SIZE},
    {PCI_1SCS_0_BANK_SIZE, PCI_1SCS_1_BANK_SIZE,
     PCI_1SCS_2_BANK_SIZE, PCI_1SCS_3_BANK_SIZE}};

static const unsigned int pci_p2p_configuration[] = {
    PCI_0P2P_CONFIGURATION, PCI_1P2P_CONFIGURATION};

/********************************************************************
* pciWriteConfigReg - Write to a PCI configuration register
*                    - Make sure the GT is configured as a master before writing
*                      to another device on the PCI.
*                    - The function takes care of Big/Little endian conversion.
*
*
* Inputs:   unsigned int regOffset: The register offset as it apears in the GT spec
*                   (or any other PCI device spec)
*           pciDevNum: The device number needs to be addressed.
*
*  Configuration Address 0xCF8:
*
*       31 30    24 23  16 15  11 10     8 7      2  0     <=bit Number
*  |congif|Reserved|  Bus |Device|Function|Register|00|
*  |Enable|        |Number|Number| Number | Number |  |    <=field Name
*
*********************************************************************/
void pciWriteConfigReg(PCI_HOST host, unsigned int regOffset,unsigned int pciDevNum,unsigned int data)
{
    volatile unsigned int DataForAddrReg;
    unsigned int functionNum;
    unsigned int busNum = 0;
    unsigned int addr;

    if(pciDevNum > 32) /* illegal device Number */
        return;
    if(pciDevNum == SELF) /* configure our configuration space. */
    {
        pciDevNum = (GTREGREAD(pci_p2p_configuration_reg[host]) >> 24) & 0x1f;
        busNum = GTREGREAD(pci_p2p_configuration_reg[host]) & 0xff0000;
    }
    functionNum =  regOffset & 0x00000700;
    pciDevNum = pciDevNum << 11;
    regOffset = regOffset & 0xfc;
    DataForAddrReg = ( regOffset | pciDevNum | functionNum | busNum) | BIT31;
    GT_REG_WRITE(pci_configuration_address[host],DataForAddrReg);
    GT_REG_READ(pci_configuration_address[host], &addr);
    if (addr != DataForAddrReg) return;
    GT_REG_WRITE(pci_configuration_data[host],data);
}

/********************************************************************
* pciReadConfigReg  - Read from a PCI0 configuration register
*                    - Make sure the GT is configured as a master before reading
*                     from another device on the PCI.
*                   - The function takes care of Big/Little endian conversion.
* INPUTS:   regOffset: The register offset as it apears in the GT spec (or PCI
*                        spec)
*           pciDevNum: The device number needs to be addressed.
* RETURNS: data , if the data == 0xffffffff check the master abort bit in the
*                 cause register to make sure the data is valid
*
*  Configuration Address 0xCF8:
*
*       31 30    24 23  16 15  11 10     8 7      2  0     <=bit Number
*  |congif|Reserved|  Bus |Device|Function|Register|00|
*  |Enable|        |Number|Number| Number | Number |  |    <=field Name
*
*********************************************************************/
unsigned int pciReadConfigReg (PCI_HOST host, unsigned int regOffset,unsigned int pciDevNum)
{
    volatile unsigned int DataForAddrReg;
   	unsigned int data;
    unsigned int functionNum;
    unsigned int busNum = 0;

    if(pciDevNum > 32) /* illegal device Number */
        return 0xffffffff;
    if(pciDevNum == SELF) /* configure our configuration space. */
    {
        pciDevNum = (GTREGREAD(pci_p2p_configuration_reg[host]) >> 24) & 0x1f;
        busNum = GTREGREAD(pci_p2p_configuration_reg[host]) & 0xff0000;
    }
    functionNum = regOffset & 0x00000700;
    pciDevNum = pciDevNum << 11;
    regOffset = regOffset & 0xfc;
    DataForAddrReg = (regOffset | pciDevNum | functionNum | busNum) | BIT31 ;
    GT_REG_WRITE(pci_configuration_address[host],DataForAddrReg);
    GT_REG_READ(pci_configuration_address[host], &data);
    if (data != DataForAddrReg)
        return 0xffffffff;
    GT_REG_READ(pci_configuration_data[host], &data);
    return data;
}

/********************************************************************
* pciOverBridgeWriteConfigReg - Write to a PCI configuration register where
*                               the agent is placed on another Bus. For more
*                               information read P2P in the PCI spec.
*
* Inputs:   unsigned int regOffset - The register offset as it apears in the
*           GT spec (or any other PCI device spec).
*           unsigned int pciDevNum - The device number needs to be addressed.
*           unsigned int busNum - On which bus does the Target agent connect
*                                 to.
*           unsigned int data - data to be written.
*
*  Configuration Address 0xCF8:
*
*       31 30    24 23  16 15  11 10     8 7      2  0     <=bit Number
*  |congif|Reserved|  Bus |Device|Function|Register|01|
*  |Enable|        |Number|Number| Number | Number |  |    <=field Name
*
*  The configuration Address is configure as type-I (bits[1:0] = '01') due to
*   PCI spec referring to P2P.
*
*********************************************************************/
void pciOverBridgeWriteConfigReg(PCI_HOST host,
				 unsigned int regOffset,
                                 unsigned int pciDevNum,
                                 unsigned int busNum,unsigned int data)
{
   	unsigned int   DataForReg;
    unsigned int   functionNum;

   	functionNum =  regOffset & 0x00000700;
    pciDevNum = pciDevNum << 11;
    regOffset = regOffset & 0xff;
    busNum = busNum << 16;
    if(pciDevNum == SELF) /* This board */
    {
        DataForReg = ( regOffset | pciDevNum | functionNum) | BIT0;
    }
    else
    {
        DataForReg = ( regOffset | pciDevNum | functionNum | busNum) |
            BIT31 | BIT0;
    }
    GT_REG_WRITE(pci_configuration_address[host],DataForReg);
    if(pciDevNum == SELF) /* This board */
    {
        GT_REG_WRITE(pci_configuration_data[host],data);
    }
    else /* configuration Transaction over the pci. */
    {
        /* The PCI is working in LE Mode So it swap the Data. */
        GT_REG_WRITE(pci_configuration_data[host],WORD_SWAP(data));
    }
}


/********************************************************************
* pciOverBridgeReadConfigReg  - Read from a PCIn configuration register where
*                               the agent target locate on another PCI bus.
*                             - Make sure the GT is configured as a master
*                               before reading from another device on the PCI.
*                             - The function takes care of Big/Little endian
*                               conversion.
* INPUTS:   regOffset: The register offset as it apears in the GT spec (or PCI
*                        spec). (configuration register offset.)
*           pciDevNum: The device number needs to be addressed.
*           busNum: the Bus number where the agent is place.
* RETURNS: data , if the data == 0xffffffff check the master abort bit in the
*                 cause register to make sure the data is valid
*
*  Configuration Address 0xCF8:
*
*       31 30    24 23  16 15  11 10     8 7      2  0     <=bit Number
*  |congif|Reserved|  Bus |Device|Function|Register|01|
*  |Enable|        |Number|Number| Number | Number |  |    <=field Name
*
*********************************************************************/
unsigned int pciOverBridgeReadConfigReg(PCI_HOST host,
					unsigned int regOffset,
                                        unsigned int pciDevNum,
                                        unsigned int busNum)
{
    unsigned int DataForReg;
    unsigned int data;
    unsigned int functionNum;

    functionNum = regOffset & 0x00000700;
    pciDevNum = pciDevNum << 11;
    regOffset = regOffset & 0xff;
    busNum = busNum << 16;
    if (pciDevNum == SELF) /* This board */
    {
        DataForReg = (regOffset | pciDevNum | functionNum) | BIT31 ;
    }
    else /* agent on another bus */
    {
        DataForReg = (regOffset | pciDevNum | functionNum | busNum) |
        BIT0 | BIT31 ;
    }
    GT_REG_WRITE(pci_configuration_address[host],DataForReg);
    if (pciDevNum == SELF) /* This board */
   	{
        GT_REG_READ(pci_configuration_data[host], &data);
    	return data;
    }
    else /* The PCI is working in LE Mode So it swap the Data. */
    {
        GT_REG_READ(pci_configuration_data[host], &data);
    	return WORD_SWAP(data);
    }
}

/********************************************************************
* pciGetRegOffset - Gets the register offset for this region config.
*
* INPUT:   Bus, Region - The bus and region we ask for its base address.
* OUTPUT:   N/A
* RETURNS: PCI register base address
*********************************************************************/
static unsigned int pciGetRegOffset(PCI_HOST host, PCI_REGION region)
{
    switch (host)
    {
	case PCI_HOST0:
	    switch(region) {
		case PCI_IO:		return PCI_0I_O_LOW_DECODE_ADDRESS;
		case PCI_REGION0:	return PCI_0MEMORY0_LOW_DECODE_ADDRESS;
		case PCI_REGION1:	return PCI_0MEMORY1_LOW_DECODE_ADDRESS;
		case PCI_REGION2:	return PCI_0MEMORY2_LOW_DECODE_ADDRESS;
		case PCI_REGION3:	return PCI_0MEMORY3_LOW_DECODE_ADDRESS;
	    }
	case PCI_HOST1:
	    switch(region) {
		case PCI_IO:		return PCI_1I_O_LOW_DECODE_ADDRESS;
		case PCI_REGION0:	return PCI_1MEMORY0_LOW_DECODE_ADDRESS;
		case PCI_REGION1:	return PCI_1MEMORY1_LOW_DECODE_ADDRESS;
		case PCI_REGION2:	return PCI_1MEMORY2_LOW_DECODE_ADDRESS;
		case PCI_REGION3:	return PCI_1MEMORY3_LOW_DECODE_ADDRESS;
	    }
    }
    return PCI_0MEMORY0_LOW_DECODE_ADDRESS;
}

static unsigned int pciGetRemapOffset(PCI_HOST host, PCI_REGION region)
{
    switch (host)
    {
	case PCI_HOST0:
	    switch(region) {
		case PCI_IO:		return PCI_0I_O_ADDRESS_REMAP;
		case PCI_REGION0:	return PCI_0MEMORY0_ADDRESS_REMAP;
		case PCI_REGION1:	return PCI_0MEMORY1_ADDRESS_REMAP;
		case PCI_REGION2:	return PCI_0MEMORY2_ADDRESS_REMAP;
		case PCI_REGION3:	return PCI_0MEMORY3_ADDRESS_REMAP;
	    }
	case PCI_HOST1:
	    switch(region) {
		case PCI_IO:		return PCI_1I_O_ADDRESS_REMAP;
		case PCI_REGION0:	return PCI_1MEMORY0_ADDRESS_REMAP;
		case PCI_REGION1:	return PCI_1MEMORY1_ADDRESS_REMAP;
		case PCI_REGION2:	return PCI_1MEMORY2_ADDRESS_REMAP;
		case PCI_REGION3:	return PCI_1MEMORY3_ADDRESS_REMAP;
	    }
    }
    return PCI_0MEMORY0_ADDRESS_REMAP;
}

bool pciMapSpace(PCI_HOST host, PCI_REGION region, unsigned int remapBase, unsigned int bankBase,unsigned int bankLength)
{
    unsigned int low=0xfff;
    unsigned int high=0x0;
    unsigned int regOffset=pciGetRegOffset(host, region);
    unsigned int remapOffset=pciGetRemapOffset(host, region);

    if(bankLength!=0) {
	low = (bankBase >> 20) & 0xfff;
	high=((bankBase+bankLength)>>20)-1;
    }

    GT_REG_WRITE(regOffset, low | (1<<24));	/* no swapping */
    GT_REG_WRITE(regOffset+8, high);

    if(bankLength!=0) {	/* must do AFTER writing maps */
	GT_REG_WRITE(remapOffset, remapBase>>20);	/* sorry, 32 bits only.
							   dont support upper 32
							   in this driver */
    }
    return true;
}

unsigned int pciGetSpaceBase(PCI_HOST host, PCI_REGION region)
{
    unsigned int low;
    unsigned int regOffset=pciGetRegOffset(host, region);
    GT_REG_READ(regOffset,&low);
    return (low&0xfff)<<20;
}

unsigned int pciGetSpaceSize(PCI_HOST host, PCI_REGION region)
{
    unsigned int low,high;
    unsigned int regOffset=pciGetRegOffset(host, region);
    GT_REG_READ(regOffset,&low);
    GT_REG_READ(regOffset+8,&high);
    high&=0xfff;
    low&=0xfff;
    if(high<=low) return 0;
    return (high+1-low)<<20;
}

/********************************************************************
* pciMapMemoryBank - Maps PCI_host memory bank "bank" for the slave.
*
* Inputs: base and size of PCI SCS
*********************************************************************/
void pciMapMemoryBank(PCI_HOST host, MEMORY_BANK bank, unsigned int pciDramBase,unsigned int pciDramSize)
{
  	pciDramBase = pciDramBase & 0xfffff000;
    pciDramBase = pciDramBase | (pciReadConfigReg(host,
        PCI_SCS_0_BASE_ADDRESS + 4*bank,SELF) & 0x00000fff);
    pciWriteConfigReg(host,PCI_SCS_0_BASE_ADDRESS + 4*bank,SELF,pciDramBase);
    if(pciDramSize == 0)
        pciDramSize ++;
    GT_REG_WRITE(pci_scs_bank_size[host][bank], pciDramSize-1);
}


/********************************************************************
* pciSetRegionFeatures - This function modifys one of the 8 regions with
*                         feature bits given as an input.
*                       - Be advised to check the spec before modifying them.
* Inputs: PCI_PROTECT_REGION region - one of the eight regions.
*         unsigned int features - See file: pci.h there are defintion for those
*                                 region features.
*         unsigned int baseAddress - The region base Address.
*         unsigned int topAddress - The region top Address.
* Returns: false if one of the parameters is erroneous true otherwise.
*********************************************************************/
bool pciSetRegionFeatures(PCI_HOST host, PCI_ACCESS_REGIONS region,unsigned int features,
                           unsigned int baseAddress,unsigned int regionLength)
{
    unsigned int accessLow;
    unsigned int accessHigh;
    unsigned int accessTop = baseAddress + regionLength;

    if(regionLength == 0) /* close the region. */
    {
        pciDisableAccessRegion(host, region);
        return true;
    }
    /* base Address is store is bits [11:0] */
    accessLow = (baseAddress & 0xfff00000) >> 20;
    /* All the features are update according to the defines in pci.h (to be on
       the safe side we disable bits: [11:0] */
    accessLow = accessLow | (features & 0xfffff000);
    /* write to the Low Access Region register */
    GT_REG_WRITE( pci_access_control_base_0_low[host] + 0x10*region,accessLow);

    accessHigh = (accessTop & 0xfff00000) >> 20;

    /* write to the High Access Region register */
    GT_REG_WRITE(pci_access_control_top_0[host] + 0x10*region,accessHigh - 1);
    return true;
}

/********************************************************************
* pciDisableAccessRegion - Disable The given Region by writing MAX size
*                           to its low Address and MIN size to its high Address.
*
* Inputs:   PCI_ACCESS_REGIONS region - The region we to be Disabled.
* Returns:  N/A.
*********************************************************************/
void pciDisableAccessRegion(PCI_HOST host, PCI_ACCESS_REGIONS region)
{
    /* writing back the registers default values. */
    GT_REG_WRITE(pci_access_control_base_0_low[host] + 0x10*region,0x01001fff);
    GT_REG_WRITE(pci_access_control_top_0[host] + 0x10*region,0);
}

/********************************************************************
* pciArbiterEnable - Enables PCI-0`s Arbitration mechanism.
*
* Inputs:   N/A
* Returns:  true.
*********************************************************************/
bool pciArbiterEnable(PCI_HOST host)
{
    unsigned int regData;

    GT_REG_READ(pci_arbiter_control[host],&regData);
    GT_REG_WRITE(pci_arbiter_control[host],regData | BIT31);
    return true;
}

/********************************************************************
* pciArbiterDisable - Disable PCI-0`s Arbitration mechanism.
*
* Inputs:   N/A
* Returns:  true
*********************************************************************/
bool pciArbiterDisable(PCI_HOST host)
{
    unsigned int regData;

    GT_REG_READ(pci_arbiter_control[host],&regData);
    GT_REG_WRITE(pci_arbiter_control[host],regData & 0x7fffffff);
    return true;
}

/********************************************************************
* pciParkingDisable - Park on last option disable, with this function you can
*                      disable the park on last mechanism for each agent.
*                      disabling this option for all agents results parking
*                      on the internal master.
*
* Inputs: PCI_AGENT_PARK internalAgent -  parking Disable for internal agent.
*         PCI_AGENT_PARK externalAgent0 - parking Disable for external#0 agent.
*         PCI_AGENT_PARK externalAgent1 - parking Disable for external#1 agent.
*         PCI_AGENT_PARK externalAgent2 - parking Disable for external#2 agent.
*         PCI_AGENT_PARK externalAgent3 - parking Disable for external#3 agent.
*         PCI_AGENT_PARK externalAgent4 - parking Disable for external#4 agent.
*         PCI_AGENT_PARK externalAgent5 - parking Disable for external#5 agent.
* Returns:  true
*********************************************************************/
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)
{
    unsigned int regData;
    unsigned int writeData;

    GT_REG_READ(pci_arbiter_control[host],&regData);
    writeData = (internalAgent << 14) + (externalAgent0 << 15) +     \
                (externalAgent1 << 16) + (externalAgent2 << 17) +    \
                (externalAgent3 << 18) + (externalAgent4 << 19) +    \
                (externalAgent5 << 20);
    regData = (regData & ~(0x7f<<14)) | writeData;
    GT_REG_WRITE(pci_arbiter_control[host],regData);
    return true;
}

/********************************************************************
* pciSetRegionSnoopMode - This function modifys one of the 4 regions which
*                          supports Cache Coherency in the PCI_n interface.
* Inputs: region - One of the four regions.
*         snoopType - There is four optional Types:
*                        1. No Snoop.
*                        2. Snoop to WT region.
*                        3. Snoop to WB region.
*                        4. Snoop & Invalidate to WB region.
*         baseAddress - Base Address of this region.
*         regionLength - Region length.
* Returns: false if one of the parameters is wrong otherwise return true.
*********************************************************************/
bool pciSetRegionSnoopMode(PCI_HOST host, PCI_SNOOP_REGION region,PCI_SNOOP_TYPE snoopType,
                            unsigned int baseAddress,
                            unsigned int regionLength)
{
    unsigned int snoopXbaseAddress;
    unsigned int snoopXtopAddress;
    unsigned int data;
    unsigned int snoopHigh = baseAddress + regionLength;

    if( (region > PCI_SNOOP_REGION3) || (snoopType > PCI_SNOOP_WB) )
        return false;
    snoopXbaseAddress = pci_snoop_control_base_0_low[host] + 0x10 * region;
    snoopXtopAddress = pci_snoop_control_top_0[host] + 0x10 * region;
    if(regionLength == 0) /* closing the region */
    {
        GT_REG_WRITE(snoopXbaseAddress,0x0000ffff);
        GT_REG_WRITE(snoopXtopAddress,0);
        return true;
    }
    baseAddress = baseAddress & 0xfff00000; /* Granularity of 1MByte */
    data = (baseAddress >> 20) | snoopType << 12;
    GT_REG_WRITE(snoopXbaseAddress,data);
    snoopHigh = (snoopHigh & 0xfff00000) >> 20;
    GT_REG_WRITE(snoopXtopAddress,snoopHigh - 1);
    return true;
}

/*
 *
 */

static int gt_read_config_dword(struct pci_controller *hose,
				pci_dev_t dev,
				int offset, u32* value)
{
    *value = pciReadConfigReg((PCI_HOST) hose->cfg_addr, offset, PCI_DEV(dev));
    return 0;
}

static int gt_write_config_dword(struct pci_controller *hose,
				 pci_dev_t dev,
				 int offset, u32 value)
{
    pciWriteConfigReg((PCI_HOST)hose->cfg_addr, offset, PCI_DEV(dev), value);
    return 0;
}

/*
 *
 */

static void gt_setup_ide(struct pci_controller *hose,
			 pci_dev_t dev, struct pci_config_table *entry)
{
    static const int ide_bar[]={8,4,8,4,0,0};
    u32 bar_response, bar_value;
    int bar;

    for (bar=0; bar<6; bar++)
    {
	pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + bar*4, 0x0);
	pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + bar*4, &bar_response);

	pciauto_region_allocate(bar_response & PCI_BASE_ADDRESS_SPACE_IO ?
				hose->pci_io : hose->pci_mem, ide_bar[bar], &bar_value);

	pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + bar*4, bar_value);
    }
}

static void gt_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
{
    unsigned char pin, irq;

    pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);

    if(pin == 1) {	/* only allow INT A */
	irq = pci_irq_swizzle[(PCI_HOST)hose->cfg_addr][PCI_DEV(dev)];
	if(irq)
	    pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
    }
}

struct pci_config_table gt_config_table[] = {
    { PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE,
      PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, gt_setup_ide},

    { }
};

struct pci_controller pci0_hose = {
    fixup_irq: gt_fixup_irq,
    config_table: gt_config_table,
};

struct pci_controller pci1_hose = {
    fixup_irq: gt_fixup_irq,
    config_table: gt_config_table,
};

void
pci_init_board(void)
{
    unsigned int command;

    pci0_hose.first_busno = 0;
    pci0_hose.last_busno = 0xff;

    /* PCI memory space */
    pci_set_region(pci0_hose.regions + 0,
		   CFG_PCI0_0_MEM_SPACE,
		   CFG_PCI0_0_MEM_SPACE,
		   CFG_PCI0_MEM_SIZE,
		   PCI_REGION_MEM);

    /* PCI I/O space */
    pci_set_region(pci0_hose.regions + 1,
		   CFG_PCI0_IO_SPACE_PCI,
		   CFG_PCI0_IO_SPACE,
		   CFG_PCI0_IO_SIZE,
		   PCI_REGION_IO);

    pci_set_ops(&pci0_hose,
		pci_hose_read_config_byte_via_dword,
		pci_hose_read_config_word_via_dword,
		gt_read_config_dword,
		pci_hose_write_config_byte_via_dword,
		pci_hose_write_config_word_via_dword,
		gt_write_config_dword);

    pci0_hose.region_count = 2;

    pci0_hose.cfg_addr = (unsigned int*) PCI_HOST0;

    pci_register_hose(&pci0_hose);

    pciArbiterEnable(PCI_HOST0);
    pciParkingDisable(PCI_HOST0,1,1,1,1,1,1,1);

    command = pciReadConfigReg(PCI_HOST0, PCI_COMMAND, SELF);
    command |= PCI_COMMAND_MASTER;
    pciWriteConfigReg(PCI_HOST0, PCI_COMMAND, SELF, command);

    pci0_hose.last_busno = pci_hose_scan(&pci0_hose);

    command = pciReadConfigReg(PCI_HOST0, PCI_COMMAND, SELF);
    command |= PCI_COMMAND_MEMORY;
    pciWriteConfigReg(PCI_HOST0, PCI_COMMAND, SELF, command);

    pci1_hose.first_busno = pci0_hose.last_busno + 1;
    pci1_hose.last_busno = 0xff;

    /* PCI memory space */
    pci_set_region(pci1_hose.regions + 0,
		   CFG_PCI1_0_MEM_SPACE,
		   CFG_PCI1_0_MEM_SPACE,
		   CFG_PCI1_MEM_SIZE,
		   PCI_REGION_MEM);

    /* PCI I/O space */
    pci_set_region(pci1_hose.regions + 1,
		   CFG_PCI1_IO_SPACE_PCI,
		   CFG_PCI1_IO_SPACE,
		   CFG_PCI1_IO_SIZE,
		   PCI_REGION_IO);

    pci_set_ops(&pci1_hose,
		pci_hose_read_config_byte_via_dword,
		pci_hose_read_config_word_via_dword,
		gt_read_config_dword,
		pci_hose_write_config_byte_via_dword,
		pci_hose_write_config_word_via_dword,
		gt_write_config_dword);

    pci1_hose.region_count = 2;

    pci1_hose.cfg_addr = (unsigned int*) PCI_HOST1;

    pci_register_hose(&pci1_hose);

    pciArbiterEnable(PCI_HOST1);
    pciParkingDisable(PCI_HOST1,1,1,1,1,1,1,1);

    command = pciReadConfigReg(PCI_HOST1, PCI_COMMAND, SELF);
    command |= PCI_COMMAND_MASTER;
    pciWriteConfigReg(PCI_HOST1, PCI_COMMAND, SELF, command);

    pci1_hose.last_busno = pci_hose_scan(&pci1_hose);

    command = pciReadConfigReg(PCI_HOST1, PCI_COMMAND, SELF);
    command |= PCI_COMMAND_MEMORY;
    pciWriteConfigReg(PCI_HOST1, PCI_COMMAND, SELF, command);
}