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-rw-r--r--board/esd/cpci750/pci.c961
1 files changed, 961 insertions, 0 deletions
diff --git a/board/esd/cpci750/pci.c b/board/esd/cpci750/pci.c
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+++ b/board/esd/cpci750/pci.c
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+/*
+ * (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>
+#ifdef CONFIG_PCI
+#include <pci.h>
+
+#ifdef CONFIG_PCI_PNP
+void pciauto_config_init(struct pci_controller *hose);
+int pciauto_region_allocate(struct pci_region* res, unsigned int size, unsigned int *bar);
+#endif
+
+#include "../../Marvell/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 CONFIG_PCI_PNP
+ unsigned int bar;
+#endif
+
+#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);
+
+#ifdef CONFIG_PCI_PNP
+ pciauto_config_init(&pci0_hose);
+ pciauto_region_allocate(pci0_hose.pci_io, 0x400, &bar);
+#endif
+#ifdef CONFIG_PCI_SCAN_SHOW
+ printf("PCI: Bus Dev VenId DevId Class Int\n");
+#endif
+ pci0_hose.last_busno = pci_hose_scan_bus (&pci0_hose, pci0_hose.first_busno);
+
+#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);
+
+#ifdef CONFIG_PCI_PNP
+ pciauto_config_init(&pci1_hose);
+ pciauto_region_allocate(pci1_hose.pci_io, 0x400, &bar);
+#endif
+ pci1_hose.last_busno = pci_hose_scan_bus (&pci1_hose, pci1_hose.first_busno);
+
+ command = pciReadConfigReg (PCI_HOST1, PCI_COMMAND, SELF);
+ command |= PCI_COMMAND_MEMORY;
+ pciWriteConfigReg (PCI_HOST1, PCI_COMMAND, SELF, command);
+
+}
+#endif /* of CONFIG_PCI */
generated by cgit v1.1 at 2024-11-16 09:07:16 +0000