| /******************************************************************************* |
| Copyright (C) Marvell International Ltd. and its affiliates |
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| This software file (the "File") is owned and distributed by Marvell |
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| ******************************************************************************** |
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| If you received this File from Marvell and you have entered into a commercial |
| license agreement (a "Commercial License") with Marvell, the File is licensed |
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| modify this File in accordance with the terms and conditions of the General |
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| this list of conditions and the following disclaimer. |
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| |
| *******************************************************************************/ |
| #include "pci/mvPci.h" |
| #include "ctrlEnv/mvCtrlEnvLib.h" |
| #include "ctrlEnv/mvCtrlEnvSpec.h" |
| |
| /* defines */ |
| #ifdef MV_DEBUG |
| #define DB(x) x |
| #else |
| #define DB(x) |
| #endif |
| |
| |
| /******************************************************************************* |
| * mvPciHalInit - Initialize the PCI HAL layer |
| * |
| * DESCRIPTION: |
| * This function performs basic initialization for the PCI interface |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * pciIfmod- Interface mode (Host or endpoint) |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * None. |
| * |
| *******************************************************************************/ |
| MV_VOID mvPciHalInit(MV_U32 pciIf, MV_PCI_MOD pciIfmod) |
| { |
| if (MV_PCI_MOD_HOST == pciIfmod) { |
| mvPciLocalBusNumSet(pciIf, PCI_HOST_BUS_NUM(pciIf)); |
| mvPciLocalDevNumSet(pciIf, PCI_HOST_DEV_NUM(pciIf)); |
| |
| /* Local device master Enable */ |
| mvPciMasterEnable(pciIf, MV_TRUE); |
| |
| /* Local device slave Enable */ |
| mvPciSlaveEnable(pciIf, mvPciLocalBusNumGet(pciIf), mvPciLocalDevNumGet(pciIf), MV_TRUE); |
| } |
| |
| /* enable CPU-2-PCI ordering */ |
| MV_REG_BIT_SET(PCI_CMD_REG(0), PCR_CPU_TO_PCI_ORDER_EN); |
| } |
| |
| /******************************************************************************* |
| * mvPciCommandSet - Set PCI comman register value. |
| * |
| * DESCRIPTION: |
| * This function sets a given PCI interface with its command register |
| * value. |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * command - 32bit value to be written to comamnd register. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * MV_BAD_PARAM if pciIf is not in range otherwise MV_OK |
| * |
| *******************************************************************************/ |
| MV_STATUS mvPciCommandSet(MV_U32 pciIf, MV_U32 command) |
| { |
| MV_U32 locBusNum, locDevNum, regVal; |
| |
| locBusNum = mvPciLocalBusNumGet(pciIf); |
| locDevNum = mvPciLocalDevNumGet(pciIf); |
| |
| /* Parameter checking */ |
| if (pciIf >= mvCtrlPciMaxIfGet()) { |
| mvOsPrintf("mvPciCommandSet: ERR. Invalid PCI IF num %d\n", pciIf); |
| return MV_BAD_PARAM; |
| } |
| |
| /* Set command register */ |
| MV_REG_WRITE(PCI_CMD_REG(pciIf), command); |
| |
| /* Upodate device max outstanding split tarnsaction */ |
| if ((command & PCR_CPU_TO_PCI_ORDER_EN) && (command & PCR_PCI_TO_CPU_ORDER_EN)) { |
| /* Read PCI-X command register */ |
| regVal = mvPciConfigRead (pciIf, locBusNum, locDevNum, 0, PCIX_COMMAND); |
| |
| /* clear bits 22:20 */ |
| regVal &= 0xff8fffff; |
| |
| /* set reset value */ |
| regVal |= (0x3 << 20); |
| |
| /* Write back the value */ |
| mvPciConfigWrite (pciIf, locBusNum, locDevNum, 0, PCIX_COMMAND, regVal); |
| } |
| |
| return MV_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * mvPciModeGet - Get PCI interface mode. |
| * |
| * DESCRIPTION: |
| * This function returns the given PCI interface mode. |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * |
| * OUTPUT: |
| * pPciMode - Pointer to PCI mode structure. |
| * |
| * RETURN: |
| * MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK |
| * |
| *******************************************************************************/ |
| MV_STATUS mvPciModeGet(MV_U32 pciIf, MV_PCI_MODE *pPciMode) |
| { |
| MV_U32 pciMode; |
| |
| /* Parameter checking */ |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciModeGet: ERR. Invalid PCI interface %d\n", pciIf); |
| return MV_BAD_PARAM; |
| } |
| if (NULL == pPciMode) |
| { |
| mvOsPrintf("mvPciModeGet: ERR. pPciMode = NULL \n"); |
| return MV_BAD_PARAM; |
| } |
| |
| /* Read pci mode register */ |
| pciMode = MV_REG_READ(PCI_MODE_REG(pciIf)); |
| |
| switch (pciMode & PMR_PCI_MODE_MASK) |
| { |
| case PMR_PCI_MODE_CONV: |
| pPciMode->pciType = MV_PCI_CONV; |
| |
| if (MV_REG_READ(PCI_DLL_CTRL_REG(pciIf)) & PDC_DLL_EN) |
| pPciMode->pciSpeed = 66000000; /* 66MHZ */ |
| else |
| pPciMode->pciSpeed = 33000000; /* 33MHZ */ |
| |
| break; |
| |
| case PMR_PCI_MODE_PCIX_66MHZ: |
| pPciMode->pciType = MV_PCIX; |
| pPciMode->pciSpeed = 66000000; /* 66MHZ */ |
| break; |
| |
| case PMR_PCI_MODE_PCIX_100MHZ: |
| pPciMode->pciType = MV_PCIX; |
| pPciMode->pciSpeed = 100000000; /* 100MHZ */ |
| break; |
| |
| case PMR_PCI_MODE_PCIX_133MHZ: |
| pPciMode->pciType = MV_PCIX; |
| pPciMode->pciSpeed = 133000000; /* 133MHZ */ |
| break; |
| |
| default: |
| mvOsPrintf("mvPciModeGet: ERR. Non existing mode !!\n"); |
| return MV_ERROR; |
| } |
| |
| switch (pciMode & PMR_PCI_64_MASK) |
| { |
| case PMR_PCI_64_64BIT: |
| pPciMode->pciWidth = MV_PCI_64; |
| break; |
| |
| case PMR_PCI_64_32BIT: |
| pPciMode->pciWidth = MV_PCI_32; |
| break; |
| |
| default: |
| mvOsPrintf("mvPciModeGet: ERR. Non existing mode !!\n"); |
| return MV_ERROR; |
| } |
| |
| return MV_OK; |
| } |
| |
| /******************************************************************************* |
| * mvPciRetrySet - Set PCI retry counters |
| * |
| * DESCRIPTION: |
| * This function specifies the number of times the PCI controller |
| * retries a transaction before it quits. |
| * Applies to the PCI Master when acting as a requester. |
| * Applies to the PCI slave when acting as a completer (PCI-X mode). |
| * A 0x00 value means a "retry forever". |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * counter - Number of times PCI controller retry. Use counter value |
| * up to PRR_RETRY_CNTR_MAX. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK |
| * |
| *******************************************************************************/ |
| MV_STATUS mvPciRetrySet(MV_U32 pciIf, MV_U32 counter) |
| { |
| MV_U32 pciRetry; |
| |
| /* Parameter checking */ |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciRetrySet: ERR. Invalid PCI interface %d\n", pciIf); |
| return MV_BAD_PARAM; |
| } |
| |
| if (counter >= PRR_RETRY_CNTR_MAX) |
| { |
| mvOsPrintf("mvPciRetrySet: ERR. Invalid counter: %d\n", counter); |
| return MV_BAD_PARAM; |
| |
| } |
| |
| /* Reading PCI retry register */ |
| pciRetry = MV_REG_READ(PCI_RETRY_REG(pciIf)); |
| |
| pciRetry &= ~PRR_RETRY_CNTR_MASK; |
| |
| pciRetry |= (counter << PRR_RETRY_CNTR_OFFS); |
| |
| /* write new value */ |
| MV_REG_WRITE(PCI_RETRY_REG(pciIf), pciRetry); |
| |
| return MV_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * mvPciDiscardTimerSet - Set PCI discard timer |
| * |
| * DESCRIPTION: |
| * This function set PCI discard timer. |
| * In conventional PCI mode: |
| * Specifies the number of PCLK cycles the PCI slave keeps a non-accessed |
| * read buffers (non-completed delayed read) before invalidate the buffer. |
| * Set to '0' to disable the timer. The PCI slave waits for delayed |
| * read completion forever. |
| * In PCI-X mode: |
| * Specifies the number of PCLK cycles the PCI master waits for split |
| * completion transaction, before it invalidates the pre-allocated read |
| * buffer. |
| * Set to '0' to disable the timer. The PCI master waits for split |
| * completion forever. |
| * NOTE: Must be set to a number greater than MV_PCI_MAX_DISCARD_CLK, |
| * unless using the "wait for ever" setting 0x0. |
| * NOTE: Must not be updated while there are pending read requests. |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * pClkCycles - Number of PCI clock cycles. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK |
| * |
| *******************************************************************************/ |
| MV_STATUS mvPciDiscardTimerSet(MV_U32 pciIf, MV_U32 pClkCycles) |
| { |
| MV_U32 pciDiscardTimer; |
| |
| /* Parameter checking */ |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciDiscardTimerSet: ERR. Invalid PCI interface %d\n", |
| pciIf); |
| return MV_BAD_PARAM; |
| } |
| |
| if (pClkCycles >= PDTR_TIMER_MIN) |
| { |
| mvOsPrintf("mvPciDiscardTimerSet: ERR. Invalid Clk value: %d\n", |
| pClkCycles); |
| return MV_BAD_PARAM; |
| |
| } |
| |
| /* Read PCI Discard Timer */ |
| pciDiscardTimer = MV_REG_READ(PCI_DISCARD_TIMER_REG(pciIf)); |
| |
| pciDiscardTimer &= ~PDTR_TIMER_MASK; |
| |
| pciDiscardTimer |= (pClkCycles << PDTR_TIMER_OFFS); |
| |
| /* Write new value */ |
| MV_REG_WRITE(PCI_DISCARD_TIMER_REG(pciIf), pciDiscardTimer); |
| |
| return MV_OK; |
| |
| } |
| |
| /* PCI Arbiter routines */ |
| |
| /******************************************************************************* |
| * mvPciArbEnable - PCI arbiter enable/disable |
| * |
| * DESCRIPTION: |
| * This fuction enable/disables a given PCI interface arbiter. |
| * NOTE: Arbiter setting can not be changed while in work. It should only |
| * be set once. |
| * INPUT: |
| * pciIf - PCI interface number. |
| * enable - Enable/disable parameter. If enable = MV_TRUE then enable. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * None. |
| * |
| *******************************************************************************/ |
| MV_STATUS mvPciArbEnable(MV_U32 pciIf, MV_BOOL enable) |
| { |
| MV_U32 regVal; |
| |
| /* Parameter checking */ |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciArbEnable: ERR. Invalid PCI interface %d\n", pciIf); |
| return MV_ERROR; |
| } |
| |
| /* Set PCI Arbiter Control register according to default configuration */ |
| regVal = MV_REG_READ(PCI_ARBITER_CTRL_REG(pciIf)); |
| |
| /* Make sure arbiter disabled before changing its values */ |
| MV_REG_BIT_RESET(PCI_ARBITER_CTRL_REG(pciIf), PACR_ARB_ENABLE); |
| |
| regVal &= ~PCI_ARBITER_CTRL_DEFAULT_MASK; |
| |
| regVal |= PCI_ARBITER_CTRL_DEFAULT; /* Set default configuration */ |
| |
| if (MV_TRUE == enable) |
| { |
| regVal |= PACR_ARB_ENABLE; |
| } |
| else |
| { |
| regVal &= ~PACR_ARB_ENABLE; |
| } |
| |
| /* Write to register */ |
| MV_REG_WRITE(PCI_ARBITER_CTRL_REG(pciIf), regVal); |
| |
| return MV_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * mvPciArbParkDis - Disable arbiter parking on agent |
| * |
| * DESCRIPTION: |
| * This function disables the PCI arbiter from parking on the given agent |
| * list. |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * pciAgentMask - When a bit in the mask is set to '1', parking on |
| * the associated PCI master is disabled. Mask bit |
| * refers to bit 0 - 6. For example disable parking on PCI |
| * agent 3 set pciAgentMask 0x4 (bit 3 is set). |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * None. |
| * |
| *******************************************************************************/ |
| MV_STATUS mvPciArbParkDis(MV_U32 pciIf, MV_U32 pciAgentMask) |
| { |
| MV_U32 pciArbiterCtrl; |
| |
| /* Parameter checking */ |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciArbParkDis: ERR. Invalid PCI interface %d\n", pciIf); |
| return MV_ERROR; |
| } |
| |
| /* Reading Arbiter Control register */ |
| pciArbiterCtrl = MV_REG_READ(PCI_ARBITER_CTRL_REG(pciIf)); |
| |
| /* Arbiter must be disabled before changing parking */ |
| MV_REG_BIT_RESET(PCI_ARBITER_CTRL_REG(pciIf), PACR_ARB_ENABLE); |
| |
| /* do the change */ |
| pciArbiterCtrl &= ~PACR_PARK_DIS_MASK; |
| pciArbiterCtrl |= (pciAgentMask << PACR_PARK_DIS_OFFS); |
| |
| /* writing new value ( if th earbiter was enabled before the change */ |
| /* here it will be reenabled */ |
| MV_REG_WRITE(PCI_ARBITER_CTRL_REG(pciIf), pciArbiterCtrl); |
| |
| return MV_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * mvPciArbBrokDetectSet - Set PCI arbiter broken detection |
| * |
| * DESCRIPTION: |
| * This function sets the maximum number of cycles that the arbiter |
| * waits for a PCI master to respond to its grant assertion. If a |
| * PCI agent fails to respond within this time, the PCI arbiter aborts |
| * the transaction and performs a new arbitration cycle. |
| * NOTE: Value must be greater than '1' for conventional PCI and |
| * greater than '5' for PCI-X. |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * pClkCycles - Number of PCI clock cycles. If equal to '0' the broken |
| * master detection is disabled. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK |
| * |
| *******************************************************************************/ |
| MV_STATUS mvPciArbBrokDetectSet(MV_U32 pciIf, MV_U32 pClkCycles) |
| { |
| MV_U32 pciArbiterCtrl; |
| MV_U32 pciMode; |
| |
| /* Parameter checking */ |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciArbBrokDetectSet: ERR. Invalid PCI interface %d\n", |
| pciIf); |
| return MV_BAD_PARAM; |
| } |
| |
| /* Checking PCI mode and if pClkCycles is legal value */ |
| pciMode = MV_REG_READ(PCI_MODE_REG(pciIf)); |
| pciMode &= PMR_PCI_MODE_MASK; |
| |
| if (PMR_PCI_MODE_CONV == pciMode) |
| { |
| if (pClkCycles < PACR_BROKEN_VAL_CONV_MIN) |
| return MV_ERROR; |
| } |
| else |
| { |
| if (pClkCycles < PACR_BROKEN_VAL_PCIX_MIN) |
| return MV_ERROR; |
| } |
| |
| pClkCycles <<= PACR_BROKEN_VAL_OFFS; |
| |
| /* Reading Arbiter Control register */ |
| pciArbiterCtrl = MV_REG_READ(PCI_ARBITER_CTRL_REG(pciIf)); |
| pciArbiterCtrl &= ~PACR_BROKEN_VAL_MASK; |
| pciArbiterCtrl |= pClkCycles; |
| |
| /* Arbiter must be disabled before changing broken detection */ |
| MV_REG_BIT_RESET(PCI_ARBITER_CTRL_REG(pciIf), PACR_ARB_ENABLE); |
| |
| /* writing new value ( if th earbiter was enabled before the change */ |
| /* here it will be reenabled */ |
| |
| MV_REG_WRITE(PCI_ARBITER_CTRL_REG(pciIf), pciArbiterCtrl); |
| |
| return MV_OK; |
| } |
| |
| /* PCI configuration space read write */ |
| |
| /******************************************************************************* |
| * mvPciConfigRead - Read from configuration space |
| * |
| * DESCRIPTION: |
| * This function performs a 32 bit read from PCI configuration space. |
| * It supports both type 0 and type 1 of Configuration Transactions |
| * (local and over bridge). In order to read from local bus segment, use |
| * bus number retrieved from mvPciLocalBusNumGet(). Other bus numbers |
| * will result configuration transaction of type 1 (over bridge). |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * bus - PCI segment bus number. |
| * dev - PCI device number. |
| * func - Function number. |
| * regOffs - Register offset. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * 32bit register data, 0xffffffff on error |
| * |
| *******************************************************************************/ |
| MV_U32 mvPciConfigRead (MV_U32 pciIf, MV_U32 bus, MV_U32 dev, MV_U32 func, |
| MV_U32 regOff) |
| { |
| MV_U32 pciData = 0; |
| |
| /* Parameter checking */ |
| if (PCI_DEFAULT_IF != pciIf) |
| { |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciConfigRead: ERR. Invalid PCI interface %d\n",pciIf); |
| return 0xFFFFFFFF; |
| } |
| } |
| |
| if (dev >= MAX_PCI_DEVICES) |
| { |
| DB(mvOsPrintf("mvPciConfigRead: ERR. device number illigal %d\n", dev)); |
| return 0xFFFFFFFF; |
| } |
| |
| if (func >= MAX_PCI_FUNCS) |
| { |
| DB(mvOsPrintf("mvPciConfigRead: ERR. function number illigal %d\n", func)); |
| return 0xFFFFFFFF; |
| } |
| |
| if (bus >= MAX_PCI_BUSSES) |
| { |
| DB(mvOsPrintf("mvPciConfigRead: ERR. bus number illigal %d\n", bus)); |
| return MV_ERROR; |
| } |
| |
| |
| /* Creating PCI address to be passed */ |
| pciData |= (bus << PCAR_BUS_NUM_OFFS); |
| pciData |= (dev << PCAR_DEVICE_NUM_OFFS); |
| pciData |= (func << PCAR_FUNC_NUM_OFFS); |
| pciData |= (regOff & PCAR_REG_NUM_MASK); |
| |
| pciData |= PCAR_CONFIG_EN; |
| |
| /* Write the address to the PCI configuration address register */ |
| MV_REG_WRITE(PCI_CONFIG_ADDR_REG(pciIf), pciData); |
| |
| /* In order to let the PCI controller absorbed the address of the read */ |
| /* transaction we perform a validity check that the address was written */ |
| if(pciData != MV_REG_READ(PCI_CONFIG_ADDR_REG(pciIf))) |
| { |
| return MV_ERROR; |
| } |
| /* Read the Data returned in the PCI Data register */ |
| pciData = MV_REG_READ(PCI_CONFIG_DATA_REG(pciIf)); |
| |
| return pciData; |
| } |
| |
| /******************************************************************************* |
| * mvPciConfigWrite - Write to configuration space |
| * |
| * DESCRIPTION: |
| * This function performs a 32 bit write to PCI configuration space. |
| * It supports both type 0 and type 1 of Configuration Transactions |
| * (local and over bridge). In order to write to local bus segment, use |
| * bus number retrieved from mvPciLocalBusNumGet(). Other bus numbers |
| * will result configuration transaction of type 1 (over bridge). |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * bus - PCI segment bus number. |
| * dev - PCI device number. |
| * func - Function number. |
| * regOffs - Register offset. |
| * data - 32bit data. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK |
| * |
| *******************************************************************************/ |
| MV_STATUS mvPciConfigWrite(MV_U32 pciIf, MV_U32 bus, MV_U32 dev, |
| MV_U32 func, MV_U32 regOff, MV_U32 data) |
| { |
| MV_U32 pciData = 0; |
| |
| /* Parameter checking */ |
| if (PCI_DEFAULT_IF != pciIf) |
| { |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciConfigWrite: ERR. Invalid PCI interface %d\n", |
| pciIf); |
| return 0xFFFFFFFF; |
| } |
| } |
| |
| if (dev >= MAX_PCI_DEVICES) |
| { |
| mvOsPrintf("mvPciConfigWrite: ERR. device number illigal %d\n",dev); |
| return MV_BAD_PARAM; |
| } |
| |
| if (func >= MAX_PCI_FUNCS) |
| { |
| mvOsPrintf("mvPciConfigWrite: ERR. function number illigal %d\n", func); |
| return MV_ERROR; |
| } |
| |
| if (bus >= MAX_PCI_BUSSES) |
| { |
| mvOsPrintf("mvPciConfigWrite: ERR. bus number illigal %d\n", bus); |
| return MV_ERROR; |
| } |
| |
| /* Creating PCI address to be passed */ |
| pciData |= (bus << PCAR_BUS_NUM_OFFS); |
| pciData |= (dev << PCAR_DEVICE_NUM_OFFS); |
| pciData |= (func << PCAR_FUNC_NUM_OFFS); |
| pciData |= (regOff & PCAR_REG_NUM_MASK); |
| |
| pciData |= PCAR_CONFIG_EN; |
| |
| /* Write the address to the PCI configuration address register */ |
| MV_REG_WRITE(PCI_CONFIG_ADDR_REG(pciIf), pciData); |
| |
| /* In order to let the PCI controller absorbed the address of the read */ |
| /* transaction we perform a validity check that the address was written */ |
| if(pciData != MV_REG_READ(PCI_CONFIG_ADDR_REG(pciIf))) |
| { |
| return MV_ERROR; |
| } |
| |
| /* Write the Data passed to the PCI Data register */ |
| MV_REG_WRITE(PCI_CONFIG_DATA_REG(pciIf), data); |
| |
| return MV_OK; |
| } |
| |
| /******************************************************************************* |
| * mvPciMasterEnable - Enable/disale PCI interface master transactions. |
| * |
| * DESCRIPTION: |
| * This function performs read modified write to PCI command status |
| * (offset 0x4) to set/reset bit 2. After this bit is set, the PCI |
| * master is allowed to gain ownership on the bus, otherwise it is |
| * incapable to do so. |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * enable - Enable/disable parameter. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK |
| * |
| *******************************************************************************/ |
| MV_STATUS mvPciMasterEnable(MV_U32 pciIf, MV_BOOL enable) |
| { |
| MV_U32 pciCommandStatus; |
| MV_U32 RegOffs; |
| MV_U32 localBus; |
| MV_U32 localDev; |
| |
| /* Parameter checking */ |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciMasterEnable: ERR. Invalid PCI interface %d\n", pciIf); |
| return MV_ERROR; |
| } |
| |
| localBus = mvPciLocalBusNumGet(pciIf); |
| localDev = mvPciLocalDevNumGet(pciIf); |
| |
| RegOffs = PCI_STATUS_AND_COMMAND; |
| |
| pciCommandStatus = mvPciConfigRead(pciIf, localBus, localDev, 0, RegOffs); |
| |
| if (MV_TRUE == enable) |
| { |
| pciCommandStatus |= PSCR_MASTER_EN; |
| } |
| else |
| { |
| pciCommandStatus &= ~PSCR_MASTER_EN; |
| } |
| |
| mvPciConfigWrite(pciIf, localBus, localDev, 0, RegOffs, pciCommandStatus); |
| |
| return MV_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * mvPciSlaveEnable - Enable/disale PCI interface slave transactions. |
| * |
| * DESCRIPTION: |
| * This function performs read modified write to PCI command status |
| * (offset 0x4) to set/reset bit 0 and 1. After those bits are set, |
| * the PCI slave is allowed to respond to PCI IO space access (bit 0) |
| * and PCI memory space access (bit 1). |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * dev - PCI device number. |
| * enable - Enable/disable parameter. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * MV_BAD_PARAM for bad parameters ,MV_ERROR on error ! otherwise MV_OK |
| * |
| *******************************************************************************/ |
| MV_STATUS mvPciSlaveEnable(MV_U32 pciIf, MV_U32 bus, MV_U32 dev, MV_BOOL enable) |
| { |
| MV_U32 pciCommandStatus; |
| MV_U32 RegOffs; |
| |
| /* Parameter checking */ |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciSlaveEnable: ERR. Invalid PCI interface %d\n", pciIf); |
| return MV_BAD_PARAM; |
| } |
| if (dev >= MAX_PCI_DEVICES) |
| { |
| mvOsPrintf("mvPciLocalDevNumSet: ERR. device number illigal %d\n", dev); |
| return MV_BAD_PARAM; |
| |
| } |
| |
| RegOffs = PCI_STATUS_AND_COMMAND; |
| |
| pciCommandStatus=mvPciConfigRead(pciIf, bus, dev, 0, RegOffs); |
| |
| if (MV_TRUE == enable) |
| { |
| pciCommandStatus |= (PSCR_IO_EN | PSCR_MEM_EN); |
| } |
| else |
| { |
| pciCommandStatus &= ~(PSCR_IO_EN | PSCR_MEM_EN); |
| } |
| |
| mvPciConfigWrite(pciIf, bus, dev, 0, RegOffs, pciCommandStatus); |
| |
| return MV_OK; |
| } |
| |
| /******************************************************************************* |
| * mvPciLocalBusNumSet - Set PCI interface local bus number. |
| * |
| * DESCRIPTION: |
| * This function sets given PCI interface its local bus number. |
| * Note: In case the PCI interface is PCI-X, the information is read-only. |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * busNum - Bus number. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * MV_NOT_ALLOWED in case PCI interface is PCI-X. |
| * MV_BAD_PARAM on bad parameters , |
| * otherwise MV_OK |
| * |
| *******************************************************************************/ |
| MV_STATUS mvPciLocalBusNumSet(MV_U32 pciIf, MV_U32 busNum) |
| { |
| MV_U32 pciP2PConfig; |
| MV_PCI_MODE pciMode; |
| MV_U32 localBus; |
| MV_U32 localDev; |
| |
| |
| /* Parameter checking */ |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciLocalBusNumSet: ERR. Invalid PCI interface %d\n",pciIf); |
| return MV_BAD_PARAM; |
| } |
| if (busNum >= MAX_PCI_BUSSES) |
| { |
| mvOsPrintf("mvPciLocalBusNumSet: ERR. bus number illigal %d\n", busNum); |
| return MV_ERROR; |
| |
| } |
| |
| localBus = mvPciLocalBusNumGet(pciIf); |
| localDev = mvPciLocalDevNumGet(pciIf); |
| |
| |
| /* PCI interface mode */ |
| mvPciModeGet(pciIf, &pciMode); |
| |
| /* if PCI type is PCI-X then it is not allowed to change the dev number */ |
| if (MV_PCIX == pciMode.pciType) |
| { |
| pciP2PConfig = mvPciConfigRead(pciIf, localBus, localDev, 0, PCIX_STATUS ); |
| |
| pciP2PConfig &= ~PXS_BN_MASK; |
| |
| pciP2PConfig |= (busNum << PXS_BN_OFFS) & PXS_BN_MASK; |
| |
| mvPciConfigWrite(pciIf, localBus, localDev, 0, PCIX_STATUS,pciP2PConfig ); |
| |
| } |
| else |
| { |
| pciP2PConfig = MV_REG_READ(PCI_P2P_CONFIG_REG(pciIf)); |
| |
| pciP2PConfig &= ~PPCR_BUS_NUM_MASK; |
| |
| pciP2PConfig |= (busNum << PPCR_BUS_NUM_OFFS) & PPCR_BUS_NUM_MASK; |
| |
| MV_REG_WRITE(PCI_P2P_CONFIG_REG(pciIf), pciP2PConfig); |
| |
| } |
| |
| |
| return MV_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * mvPciLocalBusNumGet - Get PCI interface local bus number. |
| * |
| * DESCRIPTION: |
| * This function gets the local bus number of a given PCI interface. |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * Local bus number.0xffffffff on Error |
| * |
| *******************************************************************************/ |
| MV_U32 mvPciLocalBusNumGet(MV_U32 pciIf) |
| { |
| MV_U32 pciP2PConfig; |
| |
| /* Parameter checking */ |
| if (PCI_DEFAULT_IF != pciIf) |
| { |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciLocalBusNumGet: ERR. Invalid PCI interface %d\n", |
| pciIf); |
| return 0xFFFFFFFF; |
| } |
| } |
| |
| pciP2PConfig = MV_REG_READ(PCI_P2P_CONFIG_REG(pciIf)); |
| pciP2PConfig &= PPCR_BUS_NUM_MASK; |
| return (pciP2PConfig >> PPCR_BUS_NUM_OFFS); |
| } |
| |
| |
| /******************************************************************************* |
| * mvPciLocalDevNumSet - Set PCI interface local device number. |
| * |
| * DESCRIPTION: |
| * This function sets given PCI interface its local device number. |
| * Note: In case the PCI interface is PCI-X, the information is read-only. |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * devNum - Device number. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * MV_NOT_ALLOWED in case PCI interface is PCI-X. MV_BAD_PARAM on bad parameters , |
| * otherwise MV_OK |
| * |
| *******************************************************************************/ |
| MV_STATUS mvPciLocalDevNumSet(MV_U32 pciIf, MV_U32 devNum) |
| { |
| MV_U32 pciP2PConfig; |
| MV_PCI_MODE pciMode; |
| MV_U32 localBus; |
| MV_U32 localDev; |
| |
| /* Parameter checking */ |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciLocalDevNumSet: ERR. Invalid PCI interface %d\n",pciIf); |
| return MV_BAD_PARAM; |
| } |
| if (devNum >= MAX_PCI_DEVICES) |
| { |
| mvOsPrintf("mvPciLocalDevNumSet: ERR. device number illigal %d\n", |
| devNum); |
| return MV_BAD_PARAM; |
| |
| } |
| |
| localBus = mvPciLocalBusNumGet(pciIf); |
| localDev = mvPciLocalDevNumGet(pciIf); |
| |
| /* PCI interface mode */ |
| mvPciModeGet(pciIf, &pciMode); |
| |
| /* if PCI type is PCIX then it is not allowed to change the dev number */ |
| if (MV_PCIX == pciMode.pciType) |
| { |
| pciP2PConfig = mvPciConfigRead(pciIf, localBus, localDev, 0, PCIX_STATUS ); |
| |
| pciP2PConfig &= ~PXS_DN_MASK; |
| |
| pciP2PConfig |= (devNum << PXS_DN_OFFS) & PXS_DN_MASK; |
| |
| mvPciConfigWrite(pciIf,localBus, localDev, 0, PCIX_STATUS,pciP2PConfig ); |
| } |
| else |
| { |
| pciP2PConfig = MV_REG_READ(PCI_P2P_CONFIG_REG(pciIf)); |
| |
| pciP2PConfig &= ~PPCR_DEV_NUM_MASK; |
| |
| pciP2PConfig |= (devNum << PPCR_DEV_NUM_OFFS) & PPCR_DEV_NUM_MASK; |
| |
| MV_REG_WRITE(PCI_P2P_CONFIG_REG(pciIf), pciP2PConfig); |
| } |
| |
| return MV_OK; |
| } |
| |
| /******************************************************************************* |
| * mvPciLocalDevNumGet - Get PCI interface local device number. |
| * |
| * DESCRIPTION: |
| * This function gets the local device number of a given PCI interface. |
| * |
| * INPUT: |
| * pciIf - PCI interface number. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * Local device number. 0xffffffff on Error |
| * |
| *******************************************************************************/ |
| MV_U32 mvPciLocalDevNumGet(MV_U32 pciIf) |
| { |
| MV_U32 pciP2PConfig; |
| |
| /* Parameter checking */ |
| |
| if (PCI_DEFAULT_IF != pciIf) |
| { |
| if (pciIf >= mvCtrlPciMaxIfGet()) |
| { |
| mvOsPrintf("mvPciLocalDevNumGet: ERR. Invalid PCI interface %d\n", |
| pciIf); |
| return 0xFFFFFFFF; |
| } |
| } |
| |
| pciP2PConfig = MV_REG_READ(PCI_P2P_CONFIG_REG(pciIf)); |
| |
| pciP2PConfig &= PPCR_DEV_NUM_MASK; |
| |
| return (pciP2PConfig >> PPCR_DEV_NUM_OFFS); |
| } |
| |
| |
| |
| |