263 lines
8.6 KiB
Go
263 lines
8.6 KiB
Go
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package common
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// Bit field constants for PAD_CFG_DW0 register
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const (
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AllFields uint32 = 0xffffffff
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PadRstCfgShift uint8 = 30
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PadRstCfgMask uint32 = 0x3 << PadRstCfgShift
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RxPadStateSelectShift uint8 = 29
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RxPadStateSelectMask uint32 = 0x1 << RxPadStateSelectShift
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RxRawOverrideTo1Shift uint8 = 28
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RxRawOverrideTo1Mask uint32 = 0x1 << RxRawOverrideTo1Shift
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RxLevelEdgeConfigurationShift uint8 = 25
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RxLevelEdgeConfigurationMask uint32 = 0x3 << RxLevelEdgeConfigurationShift
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RxInvertShift uint8 = 23
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RxInvertMask uint32 = 0x1 << RxInvertShift
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RxTxEnableConfigShift uint8 = 21
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RxTxEnableConfigMask uint32 = 0x3 << RxTxEnableConfigShift
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InputRouteIOxApicShift uint8 = 20
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InputRouteIOxApicMask uint32 = 0x1 << InputRouteIOxApicShift
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InputRouteSCIShift uint8 = 19
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InputRouteSCIMask uint32 = 0x1 << InputRouteSCIShift
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InputRouteSMIShift uint8 = 18
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InputRouteSMIMask uint32 = 0x1 << InputRouteSMIShift
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InputRouteNMIShift uint8 = 17
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InputRouteNMIMask uint32 = 0x1 << InputRouteNMIShift
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PadModeShift uint8 = 10
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PadModeMask uint32 = 0x7 << PadModeShift
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RxTxBufDisableShift uint8 = 8
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RxTxBufDisableMask uint32 = 0x3 << RxTxBufDisableShift
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RxStateShift uint8 = 1
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RxStateMask uint32 = 0x1 << RxStateShift
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TxStateMask uint32 = 0x1
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)
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// config DW registers
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const (
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PAD_CFG_DW0 = 0
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PAD_CFG_DW1 = 1
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MAX_DW_NUM = 2
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)
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// Register - configuration data structure based on DW0/1 dw value
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// value : register value
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// mask : bit fileds mask
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// roFileds : read only fields mask
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type Register struct {
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value uint32
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mask uint32
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roFileds uint32
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}
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func (reg *Register) ValueSet(value uint32) *Register {
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reg.value = value
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return reg
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}
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func (reg *Register) ValueGet() uint32 {
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return reg.value
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}
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func (reg *Register) ReadOnlyFieldsSet(fileldMask uint32) *Register {
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reg.roFileds = fileldMask
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return reg
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}
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func (reg *Register) ReadOnlyFieldsGet() uint32 {
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return reg.roFileds
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}
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// Check the mask of the new macro
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// Returns true if the macro is generated correctly
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func (reg *Register) MaskCheck() bool {
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mask := ^(reg.mask | reg.roFileds)
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return reg.value&mask == 0
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}
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// getResetConfig - get Reset Configuration from PADRSTCFG field in PAD_CFG_DW0_GPx register
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func (reg *Register) getFieldVal(mask uint32, shift uint8) uint8 {
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reg.mask |= mask
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return uint8((reg.value & mask) >> shift)
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}
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// CntrMaskFieldsClear - clear filed in control mask
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// fieldMask - mask of the field to be cleared
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func (reg *Register) CntrMaskFieldsClear(fieldMask uint32) {
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reg.mask &= ^fieldMask;
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}
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// IgnoredFieldsGet - return mask of unchecked (ignored) fields.
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// These bit fields were not read when the macro was
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// generated.
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// return
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// mask of ignored bit field
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func (reg *Register) IgnoredFieldsGet() uint32 {
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mask := reg.mask | reg.roFileds
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return reg.value & ^mask
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}
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// getResetConfig - returns type reset source for corresponding pad
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// PADRSTCFG field in PAD_CFG_DW0 register
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func (reg *Register) GetResetConfig() uint8 {
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return reg.getFieldVal(PadRstCfgMask, PadRstCfgShift)
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}
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// getRXPadStateSelect - returns RX Pad State (RXINV)
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// 0 = Raw RX pad state directly from RX buffer
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// 1 = Internal RX pad state
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func (reg *Register) GetRXPadStateSelect() uint8 {
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return reg.getFieldVal(RxPadStateSelectMask, RxPadStateSelectShift)
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}
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// getRXRawOverrideStatus - returns 1 if the selected pad state is being
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// overridden to '1' (RXRAW1 field)
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func (reg *Register) GetRXRawOverrideStatus() uint8 {
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return reg.getFieldVal(RxRawOverrideTo1Mask, RxRawOverrideTo1Shift)
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}
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// getRXLevelEdgeConfiguration - returns RX Level/Edge Configuration (RXEVCFG)
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// 0h = Level, 1h = Edge, 2h = Drive '0', 3h = Reserved (implement as setting 0h)
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func (reg *Register) GetRXLevelEdgeConfiguration() uint8 {
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return reg.getFieldVal(RxLevelEdgeConfigurationMask, RxLevelEdgeConfigurationShift)
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}
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// GetRxInvert - returns RX Invert state (RXINV)
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// 1 - Inversion, 0 - No inversion
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func (reg *Register) GetRxInvert() uint8 {
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return reg.getFieldVal(RxInvertMask, RxInvertShift)
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}
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// getRxTxEnableConfig - returns RX/TX Enable Config (RXTXENCFG)
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// 0 = Function defined in Pad Mode controls TX and RX Enables
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// 1 = Function controls TX Enable and RX Disabled with RX drive 0 internally
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// 2 = Function controls TX Enable and RX Disabled with RX drive 1 internally
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// 3 = Function controls TX Enabled and RX is always enabled
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func (reg *Register) GetRxTxEnableConfig() uint8 {
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return reg.getFieldVal(RxTxEnableConfigMask, RxTxEnableConfigShift)
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}
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// getGPIOInputRouteIOxAPIC - returns 1 if the pad can be routed to cause
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// peripheral IRQ when configured in GPIO input mode.
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func (reg *Register) GetGPIOInputRouteIOxAPIC() uint8 {
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return reg.getFieldVal(InputRouteIOxApicMask, InputRouteIOxApicShift)
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}
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// getGPIOInputRouteSCI - returns 1 if the pad can be routed to cause SCI when
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// configured in GPIO input mode.
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func (reg *Register) GetGPIOInputRouteSCI() uint8 {
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return reg.getFieldVal(InputRouteSCIMask, InputRouteSCIShift)
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}
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// getGPIOInputRouteSMI - returns 1 if the pad can be routed to cause SMI when
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// configured in GPIO input mode
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func (reg *Register) GetGPIOInputRouteSMI() uint8 {
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return reg.getFieldVal(InputRouteSMIMask, InputRouteSMIShift)
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}
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// getGPIOInputRouteNMI - returns 1 if the pad can be routed to cause NMI when
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// configured in GPIO input mode
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func (reg *Register) GetGPIOInputRouteNMI() uint8 {
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return reg.getFieldVal(InputRouteNMIMask, InputRouteNMIShift)
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}
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// getPadMode - reutrns pad mode or one of the native functions
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// 0h = GPIO control the Pad.
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// 1h = native function 1, if applicable, controls the Pad
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// 2h = native function 2, if applicable, controls the Pad
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// 3h = native function 3, if applicable, controls the Pad
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// 4h = enable GPIO blink/PWM capability if applicable
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func (reg *Register) GetPadMode() uint8 {
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return reg.getFieldVal(PadModeMask, PadModeShift)
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}
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// getGPIORxTxDisableStatus - returns GPIO RX/TX buffer state (GPIORXDIS | GPIOTXDIS)
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// 0 - both are enabled, 1 - TX Disable, 2 - RX Disable, 3 - both are disabled
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func (reg *Register) GetGPIORxTxDisableStatus() uint8 {
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return reg.getFieldVal(RxTxBufDisableMask, RxTxBufDisableShift)
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}
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// getGPIORXState - returns GPIO RX State (GPIORXSTATE)
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func (reg *Register) GetGPIORXState() uint8 {
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return reg.getFieldVal(RxStateMask, RxStateShift)
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}
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// getGPIOTXState - returns GPIO TX State (GPIOTXSTATE)
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func (reg *Register) GetGPIOTXState() uint8 {
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return reg.getFieldVal(TxStateMask, 0)
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}
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// Bit field constants for PAD_CFG_DW1 register
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const (
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PadTolShift uint8 = 25
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PadTolMask uint32 = 0x1 << PadTolShift
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IOStandbyStateShift uint8 = 14
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IOStandbyStateMask uint32 = 0xF << IOStandbyStateShift
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TermShift uint8 = 10
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TermMask uint32 = 0xF << TermShift
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IOStandbyTerminationShift uint8 = 8
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IOStandbyTerminationMask uint32 = 0x3 << IOStandbyTerminationShift
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InterruptSelectMask uint32 = 0xFF
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)
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// GetPadTol
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func (reg *Register) GetPadTol() uint8 {
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return reg.getFieldVal(PadTolMask, PadTolShift)
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}
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// getIOStandbyState - return IO Standby State (IOSSTATE)
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// 0 = Tx enabled driving last value driven, Rx enabled
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// 1 = Tx enabled driving 0, Rx disabled and Rx driving 0 back to its controller internally
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// 2 = Tx enabled driving 0, Rx disabled and Rx driving 1 back to its controller internally
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// 3 = Tx enabled driving 1, Rx disabled and Rx driving 0 back to its controller internally
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// 4 = Tx enabled driving 1, Rx disabled and Rx driving 1 back to its controller internally
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// 5 = Tx enabled driving 0, Rx enabled
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// 6 = Tx enabled driving 1, Rx enabled
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// 7 = Hi-Z, Rx driving 0 back to its controller internally
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// 8 = Hi-Z, Rx driving 1 back to its controller internally
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// 9 = Tx disabled, Rx enabled
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// 15 = IO-Standby is ignored for this pin (same as functional mode)
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// Others reserved
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func (reg *Register) GetIOStandbyState() uint8 {
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return reg.getFieldVal(IOStandbyStateMask, IOStandbyStateShift)
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}
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// getIOStandbyTermination - return IO Standby Termination (IOSTERM)
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// 0 = Same as functional mode (no change)
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// 1 = Disable Pull-up and Pull-down (no on-die termination)
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// 2 = Enable Pull-down
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// 3 = Enable Pull-up
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func (reg *Register) GetIOStandbyTermination() uint8 {
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return reg.getFieldVal(IOStandbyTerminationMask, IOStandbyTerminationShift)
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}
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// getTermination - returns the pad termination state defines the different weak
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// pull-up and pull-down settings that are supported by the buffer
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// 0000 = none; 0010 = 5k PD; 0100 = 20k PD; 1010 = 5k PU; 1100 = 20k PU;
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// 1111 = Native controller selected
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func (reg *Register) GetTermination() uint8 {
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return reg.getFieldVal(TermMask, TermShift)
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}
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// getInterruptSelect - returns Interrupt Line number from the GPIO controller
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func (reg *Register) GetInterruptSelect() uint8 {
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return reg.getFieldVal(InterruptSelectMask, 0)
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}
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