/* * (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 #include #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, CONFIG_SYS_PCI0_0_MEM_SPACE, CONFIG_SYS_PCI0_0_MEM_SPACE, CONFIG_SYS_PCI0_MEM_SIZE, PCI_REGION_MEM); /* PCI I/O space */ pci_set_region (pci0_hose.regions + 1, CONFIG_SYS_PCI0_IO_SPACE_PCI, CONFIG_SYS_PCI0_IO_SPACE, CONFIG_SYS_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, CONFIG_SYS_PCI1_0_MEM_SPACE, CONFIG_SYS_PCI1_0_MEM_SPACE, CONFIG_SYS_PCI1_MEM_SIZE, PCI_REGION_MEM); /* PCI I/O space */ pci_set_region (pci1_hose.regions + 1, CONFIG_SYS_PCI1_IO_SPACE_PCI, CONFIG_SYS_PCI1_IO_SPACE, CONFIG_SYS_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); }