mirror of
https://github.com/smaeul/u-boot.git
synced 2025-10-30 19:48:19 +00:00
761 lines
25 KiB
C
761 lines
25 KiB
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
|
|
};
|
|
|
|
static unsigned int local_buses[] = { 0, 0 };
|
|
|
|
/********************************************************************
|
|
* 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 = PCI_BUS (pciDevNum);
|
|
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 = PCI_BUS (pciDevNum);
|
|
|
|
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], ®Data);
|
|
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], ®Data);
|
|
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], ®Data);
|
|
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)
|
|
{
|
|
int bus = PCI_BUS (dev);
|
|
|
|
if ((bus == local_buses[0]) || (bus == local_buses[1])) {
|
|
*value = pciReadConfigReg ((PCI_HOST) hose->cfg_addr, offset,
|
|
PCI_DEV (dev));
|
|
} else {
|
|
*value = pciOverBridgeReadConfigReg ((PCI_HOST) hose->
|
|
cfg_addr, offset,
|
|
PCI_DEV (dev), bus);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int gt_write_config_dword (struct pci_controller *hose,
|
|
pci_dev_t dev, int offset, u32 value)
|
|
{
|
|
int bus = PCI_BUS (dev);
|
|
|
|
if ((bus == local_buses[0]) || (bus == local_buses[1])) {
|
|
pciWriteConfigReg ((PCI_HOST) hose->cfg_addr, offset,
|
|
PCI_DEV (dev), value);
|
|
} else {
|
|
pciOverBridgeWriteConfigReg ((PCI_HOST) hose->cfg_addr,
|
|
offset, PCI_DEV (dev), value,
|
|
bus);
|
|
}
|
|
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);
|
|
}
|
|
}
|
|
|
|
#ifndef CONFIG_P3G4
|
|
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);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
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 = {
|
|
#ifndef CONFIG_P3G4
|
|
fixup_irq:gt_fixup_irq,
|
|
#endif
|
|
config_table:gt_config_table,
|
|
};
|
|
|
|
struct pci_controller pci1_hose = {
|
|
#ifndef CONFIG_P3G4
|
|
fixup_irq:gt_fixup_irq,
|
|
#endif
|
|
config_table:gt_config_table,
|
|
};
|
|
|
|
void pci_init_board (void)
|
|
{
|
|
unsigned int command;
|
|
|
|
pci0_hose.first_busno = 0;
|
|
pci0_hose.last_busno = 0xff;
|
|
local_buses[0] = pci0_hose.first_busno;
|
|
/* 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);
|
|
|
|
#ifndef CONFIG_P3G4
|
|
pciArbiterEnable (PCI_HOST0);
|
|
pciParkingDisable (PCI_HOST0, 1, 1, 1, 1, 1, 1, 1);
|
|
#endif
|
|
|
|
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;
|
|
pci1_hose.current_busno = pci0_hose.current_busno;
|
|
local_buses[1] = pci1_hose.first_busno;
|
|
|
|
/* 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);
|
|
|
|
#ifndef CONFIG_P3G4
|
|
pciArbiterEnable (PCI_HOST1);
|
|
pciParkingDisable (PCI_HOST1, 1, 1, 1, 1, 1, 1, 1);
|
|
#endif
|
|
|
|
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);
|
|
}
|