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uboot-1.1.4-kirkwood/board/Marvell/db64360/pci.c

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u-boot 1.1.4
2024-01-07 23:57:24 +01:00
/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*/
/* PCI.c - PCI functions */
#include <common.h>
#include <pci.h>
#include "../include/pci.h"
#undef DEBUG
#undef IDE_SET_NATIVE_MODE
static unsigned int local_buses[] = { 0, 0 };
static const unsigned char pci_irq_swizzle[2][PCI_MAX_DEVICES] = {
{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 },
};
#ifdef DEBUG
static const unsigned int pci_bus_list[] = { PCI_0_MODE, PCI_1_MODE };
static void gt_pci_bus_mode_display (PCI_HOST host)
{
unsigned int mode;
mode = (GTREGREAD (pci_bus_list[host]) & (BIT4 | BIT5)) >> 4;
switch (mode) {
case 0:
printf ("PCI %d bus mode: Conventional PCI\n", host);
break;
case 1:
printf ("PCI %d bus mode: 66 Mhz PCIX\n", host);
break;
case 2:
printf ("PCI %d bus mode: 100 Mhz PCIX\n", host);
break;
case 3:
printf ("PCI %d bus mode: 133 Mhz PCIX\n", host);
break;
default:
printf ("Unknown BUS %d\n", mode);
}
}
#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_address_space_en[] = {
PCI_0_BASE_ADDR_REG_ENABLE, PCI_1_BASE_ADDR_REG_ENABLE
};
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);
GT_REG_WRITE (pci_configuration_data[host], 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);
GT_REG_READ (pci_configuration_data[host], &data);
return 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;
}
/********************************************************************
* pciGetBaseAddress - Gets the base address of a PCI.
* - If the PCI size is 0 then this base address has no meaning!!!
*
*
* INPUT: Bus, Region - The bus and region we ask for its base address.
* OUTPUT: N/A
* RETURNS: PCI base address.
*********************************************************************/
unsigned int pciGetBaseAddress (PCI_HOST host, PCI_REGION region)
{
unsigned int regBase;
unsigned int regEnd;
unsigned int regOffset = pciGetRegOffset (host, region);
GT_REG_READ (regOffset, &regBase);
GT_REG_READ (regOffset + 8, &regEnd);
if (regEnd <= regBase)
return 0xffffffff; /* ERROR !!! */
regBase = regBase << 16;
return regBase;
}
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 >> 16) & 0xffff;
high = ((bankBase + bankLength) >> 16) - 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 >> 16); /* 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 & 0xffff) << 16;
}
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);
return ((high & 0xffff) + 1) << 16;
}
/* ronen - 7/Dec/03*/
/********************************************************************
* gtPciDisable/EnableInternalBAR - This function enable/disable PCI BARS.
* Inputs: one of the PCI BAR
*********************************************************************/
void gtPciEnableInternalBAR (PCI_HOST host, PCI_INTERNAL_BAR pciBAR)
{
RESET_REG_BITS (pci_address_space_en[host], BIT0 << pciBAR);
}
void gtPciDisableInternalBAR (PCI_HOST host, PCI_INTERNAL_BAR pciBAR)
{
SET_REG_BITS (pci_address_space_en[host], BIT0 << pciBAR);
}
/********************************************************************
* 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)
{
/*ronen different function for 3rd bank. */
unsigned int offset = (bank < 2) ? bank * 8 : 0x100 + (bank - 2) * 8;
pciDramBase = pciDramBase & 0xfffff000;
pciDramBase = pciDramBase | (pciReadConfigReg (host,
PCI_SCS_0_BASE_ADDRESS
+ offset,
SELF) & 0x00000fff);
pciWriteConfigReg (host, PCI_SCS_0_BASE_ADDRESS + offset, SELF,
pciDramBase);
if (pciDramSize == 0)
pciDramSize++;
GT_REG_WRITE (pci_scs_bank_size[host][bank], pciDramSize - 1);
gtPciEnableInternalBAR (host, bank);
}
/********************************************************************
* 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;
}
/********************************************************************
* pciSetArbiterAgentsPriority - Priority setup for the PCI agents (Hi or Low)
*
* Inputs: PCI_AGENT_PRIO internalAgent - priotity for internal agent.
* PCI_AGENT_PRIO externalAgent0 - priotity for external#0 agent.
* PCI_AGENT_PRIO externalAgent1 - priotity for external#1 agent.
* PCI_AGENT_PRIO externalAgent2 - priotity for external#2 agent.
* PCI_AGENT_PRIO externalAgent3 - priotity for external#3 agent.
* PCI_AGENT_PRIO externalAgent4 - priotity for external#4 agent.
* PCI_AGENT_PRIO externalAgent5 - priotity for external#5 agent.
* Returns: true
*********************************************************************/
bool pciSetArbiterAgentsPriority (PCI_HOST host, PCI_AGENT_PRIO internalAgent,
PCI_AGENT_PRIO externalAgent0,
PCI_AGENT_PRIO externalAgent1,
PCI_AGENT_PRIO externalAgent2,
PCI_AGENT_PRIO externalAgent3,
PCI_AGENT_PRIO externalAgent4,
PCI_AGENT_PRIO externalAgent5)
{
unsigned int regData;
unsigned int writeData;
GT_REG_READ (pci_arbiter_control[host], &regData);
writeData = (internalAgent << 7) + (externalAgent0 << 8) +
(externalAgent1 << 9) + (externalAgent2 << 10) +
(externalAgent3 << 11) + (externalAgent4 << 12) +
(externalAgent5 << 13);
regData = (regData & 0xffffc07f) | writeData;
GT_REG_WRITE (pci_arbiter_control[host], regData & regData);
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;
}
/********************************************************************
* pciEnableBrokenAgentDetection - A master is said to be broken if it fails to
* respond to grant assertion within a window specified in
* the input value: 'brokenValue'.
*
* Inputs: unsigned char brokenValue - A value which limits the Master to hold the
* grant without asserting frame.
* Returns: Error for illegal broken value otherwise true.
*********************************************************************/
bool pciEnableBrokenAgentDetection (PCI_HOST host, unsigned char brokenValue)
{
unsigned int data;
unsigned int regData;
if (brokenValue > 0xf)
return false; /* brokenValue must be 4 bit */
data = brokenValue << 3;
GT_REG_READ (pci_arbiter_control[host], &regData);
regData = (regData & 0xffffff87) | data;
GT_REG_WRITE (pci_arbiter_control[host], regData | BIT1);
return true;
}
/********************************************************************
* pciDisableBrokenAgentDetection - This function disable the Broken agent
* Detection mechanism.
* NOTE: This operation may cause a dead lock on the
* pci0 arbitration.
*
* Inputs: N/A
* Returns: true.
*********************************************************************/
bool pciDisableBrokenAgentDetection (PCI_HOST host)
{
unsigned int regData;
GT_REG_READ (pci_arbiter_control[host], &regData);
regData = regData & 0xfffffffd;
GT_REG_WRITE (pci_arbiter_control[host], regData);
return true;
}
/********************************************************************
* pciP2PConfig - This function set the PCI_n P2P configurate.
* For more information on the P2P read PCI spec.
*
* Inputs: unsigned int SecondBusLow - Secondery PCI interface Bus Range Lower
* Boundry.
* unsigned int SecondBusHigh - Secondry PCI interface Bus Range upper
* Boundry.
* unsigned int busNum - The CPI bus number to which the PCI interface
* is connected.
* unsigned int devNum - The PCI interface's device number.
*
* Returns: true.
*********************************************************************/
bool pciP2PConfig (PCI_HOST host, unsigned int SecondBusLow,
unsigned int SecondBusHigh,
unsigned int busNum, unsigned int devNum)
{
unsigned int regData;
regData = (SecondBusLow & 0xff) | ((SecondBusHigh & 0xff) << 8) |
((busNum & 0xff) << 16) | ((devNum & 0x1f) << 24);
GT_REG_WRITE (pci_p2p_configuration[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), bus,
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++) {
/*ronen different function for 3rd bank. */
unsigned int offset =
(bar < 2) ? bar * 8 : 0x100 + (bar - 2) * 8;
pci_write_config_dword (dev, PCI_BASE_ADDRESS_0 + offset,
0x0);
pci_read_config_dword (dev, PCI_BASE_ADDRESS_0 + offset,
&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);
}
}
/* TODO BJW: Change this for DB64360. This was pulled from the EV64260 */
/* and is curently not called *. */
#if 0
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 = {
/* 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;
#ifdef DEBUG
gt_pci_bus_mode_display (PCI_HOST0);
#endif
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);
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);
command = pciReadConfigReg (PCI_HOST0, PCI_COMMAND, SELF);
command |= PCI_COMMAND_MEMORY;
pciWriteConfigReg (PCI_HOST0, PCI_COMMAND, SELF, command);
pci0_hose.last_busno = pci_hose_scan (&pci0_hose);
#ifdef DEBUG
gt_pci_bus_mode_display (PCI_HOST1);
#endif
pci1_hose.first_busno = pci0_hose.last_busno + 1;
pci1_hose.last_busno = 0xff;
pci1_hose.current_busno = pci1_hose.first_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);
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);
}
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