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Diffstat (limited to 'board/Marvell/db64360/pci.c')
| -rw-r--r-- | board/Marvell/db64360/pci.c | 940 |
1 files changed, 940 insertions, 0 deletions
diff --git a/board/Marvell/db64360/pci.c b/board/Marvell/db64360/pci.c new file mode 100644 index 0000000..5637284 --- /dev/null +++ b/board/Marvell/db64360/pci.c @@ -0,0 +1,940 @@ +/* + * (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, ®Base); + GT_REG_READ (regOffset + 8, ®End); + + 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], ®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; +} + +/******************************************************************** +* 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], ®Data); + 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], ®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; +} + +/******************************************************************** +* 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], ®Data); + 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], ®Data); + 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); + +} |