6ca98bc284
Now that the SPDX tag is in all USB files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
193 lines
7.6 KiB
C
193 lines
7.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/************************************************************************
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*
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* 16654.H Definitions for 16C654 UART used on EdgePorts
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*
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* Copyright (C) 1998 Inside Out Networks, Inc.
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*
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************************************************************************/
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#if !defined(_16654_H)
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#define _16654_H
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/************************************************************************
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*
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* D e f i n e s / T y p e d e f s
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*
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************************************************************************/
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//
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// UART register numbers
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// Numbers 0-7 are passed to the Edgeport directly. Numbers 8 and
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// above are used internally to indicate that we must enable access
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// to them via LCR bit 0x80 or LCR = 0xBF.
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// The register number sent to the Edgeport is then (x & 0x7).
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//
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// Driver must not access registers that affect operation of the
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// the EdgePort firmware -- that includes THR, RHR, IER, FCR.
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#define THR 0 // ! Transmit Holding Register (Write)
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#define RDR 0 // ! Receive Holding Register (Read)
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#define IER 1 // ! Interrupt Enable Register
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#define FCR 2 // ! Fifo Control Register (Write)
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#define ISR 2 // Interrupt Status Register (Read)
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#define LCR 3 // Line Control Register
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#define MCR 4 // Modem Control Register
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#define LSR 5 // Line Status Register
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#define MSR 6 // Modem Status Register
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#define SPR 7 // ScratchPad Register
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#define DLL 8 // Bank2[ 0 ] Divisor Latch LSB
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#define DLM 9 // Bank2[ 1 ] Divisor Latch MSB
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#define EFR 10 // Bank2[ 2 ] Extended Function Register
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//efine unused 11 // Bank2[ 3 ]
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#define XON1 12 // Bank2[ 4 ] Xon-1
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#define XON2 13 // Bank2[ 5 ] Xon-2
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#define XOFF1 14 // Bank2[ 6 ] Xoff-1
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#define XOFF2 15 // Bank2[ 7 ] Xoff-2
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#define NUM_16654_REGS 16
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#define IS_REG_2ND_BANK(x) ((x) >= 8)
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//
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// Bit definitions for each register
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//
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#define IER_RX 0x01 // Enable receive interrupt
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#define IER_TX 0x02 // Enable transmit interrupt
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#define IER_RXS 0x04 // Enable receive status interrupt
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#define IER_MDM 0x08 // Enable modem status interrupt
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#define IER_SLEEP 0x10 // Enable sleep mode
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#define IER_XOFF 0x20 // Enable s/w flow control (XOFF) interrupt
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#define IER_RTS 0x40 // Enable RTS interrupt
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#define IER_CTS 0x80 // Enable CTS interrupt
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#define IER_ENABLE_ALL 0xFF // Enable all ints
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#define FCR_FIFO_EN 0x01 // Enable FIFOs
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#define FCR_RXCLR 0x02 // Reset Rx FIFO
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#define FCR_TXCLR 0x04 // Reset Tx FIFO
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#define FCR_DMA_BLK 0x08 // Enable DMA block mode
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#define FCR_TX_LEVEL_MASK 0x30 // Mask for Tx FIFO Level
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#define FCR_TX_LEVEL_8 0x00 // Tx FIFO Level = 8 bytes
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#define FCR_TX_LEVEL_16 0x10 // Tx FIFO Level = 16 bytes
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#define FCR_TX_LEVEL_32 0x20 // Tx FIFO Level = 32 bytes
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#define FCR_TX_LEVEL_56 0x30 // Tx FIFO Level = 56 bytes
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#define FCR_RX_LEVEL_MASK 0xC0 // Mask for Rx FIFO Level
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#define FCR_RX_LEVEL_8 0x00 // Rx FIFO Level = 8 bytes
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#define FCR_RX_LEVEL_16 0x40 // Rx FIFO Level = 16 bytes
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#define FCR_RX_LEVEL_56 0x80 // Rx FIFO Level = 56 bytes
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#define FCR_RX_LEVEL_60 0xC0 // Rx FIFO Level = 60 bytes
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#define ISR_INT_MDM_STATUS 0x00 // Modem status int pending
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#define ISR_INT_NONE 0x01 // No interrupt pending
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#define ISR_INT_TXRDY 0x02 // Tx ready int pending
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#define ISR_INT_RXRDY 0x04 // Rx ready int pending
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#define ISR_INT_LINE_STATUS 0x06 // Line status int pending
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#define ISR_INT_RX_TIMEOUT 0x0C // Rx timeout int pending
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#define ISR_INT_RX_XOFF 0x10 // Rx Xoff int pending
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#define ISR_INT_RTS_CTS 0x20 // RTS/CTS change int pending
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#define ISR_FIFO_ENABLED 0xC0 // Bits set if FIFOs enabled
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#define ISR_INT_BITS_MASK 0x3E // Mask to isolate valid int causes
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#define LCR_BITS_5 0x00 // 5 bits/char
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#define LCR_BITS_6 0x01 // 6 bits/char
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#define LCR_BITS_7 0x02 // 7 bits/char
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#define LCR_BITS_8 0x03 // 8 bits/char
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#define LCR_BITS_MASK 0x03 // Mask for bits/char field
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#define LCR_STOP_1 0x00 // 1 stop bit
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#define LCR_STOP_1_5 0x04 // 1.5 stop bits (if 5 bits/char)
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#define LCR_STOP_2 0x04 // 2 stop bits (if 6-8 bits/char)
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#define LCR_STOP_MASK 0x04 // Mask for stop bits field
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#define LCR_PAR_NONE 0x00 // No parity
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#define LCR_PAR_ODD 0x08 // Odd parity
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#define LCR_PAR_EVEN 0x18 // Even parity
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#define LCR_PAR_MARK 0x28 // Force parity bit to 1
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#define LCR_PAR_SPACE 0x38 // Force parity bit to 0
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#define LCR_PAR_MASK 0x38 // Mask for parity field
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#define LCR_SET_BREAK 0x40 // Set Break condition
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#define LCR_DL_ENABLE 0x80 // Enable access to divisor latch
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#define LCR_ACCESS_EFR 0xBF // Load this value to access DLL,DLM,
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// and also the '654-only registers
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// EFR, XON1, XON2, XOFF1, XOFF2
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#define MCR_DTR 0x01 // Assert DTR
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#define MCR_RTS 0x02 // Assert RTS
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#define MCR_OUT1 0x04 // Loopback only: Sets state of RI
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#define MCR_MASTER_IE 0x08 // Enable interrupt outputs
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#define MCR_LOOPBACK 0x10 // Set internal (digital) loopback mode
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#define MCR_XON_ANY 0x20 // Enable any char to exit XOFF mode
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#define MCR_IR_ENABLE 0x40 // Enable IrDA functions
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#define MCR_BRG_DIV_4 0x80 // Divide baud rate clk by /4 instead of /1
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#define LSR_RX_AVAIL 0x01 // Rx data available
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#define LSR_OVER_ERR 0x02 // Rx overrun
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#define LSR_PAR_ERR 0x04 // Rx parity error
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#define LSR_FRM_ERR 0x08 // Rx framing error
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#define LSR_BREAK 0x10 // Rx break condition detected
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#define LSR_TX_EMPTY 0x20 // Tx Fifo empty
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#define LSR_TX_ALL_EMPTY 0x40 // Tx Fifo and shift register empty
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#define LSR_FIFO_ERR 0x80 // Rx Fifo contains at least 1 erred char
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#define EDGEPORT_MSR_DELTA_CTS 0x01 // CTS changed from last read
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#define EDGEPORT_MSR_DELTA_DSR 0x02 // DSR changed from last read
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#define EDGEPORT_MSR_DELTA_RI 0x04 // RI changed from 0 -> 1
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#define EDGEPORT_MSR_DELTA_CD 0x08 // CD changed from last read
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#define EDGEPORT_MSR_CTS 0x10 // Current state of CTS
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#define EDGEPORT_MSR_DSR 0x20 // Current state of DSR
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#define EDGEPORT_MSR_RI 0x40 // Current state of RI
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#define EDGEPORT_MSR_CD 0x80 // Current state of CD
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// Tx Rx
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//-------------------------------
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#define EFR_SWFC_NONE 0x00 // None None
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#define EFR_SWFC_RX1 0x02 // None XOFF1
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#define EFR_SWFC_RX2 0x01 // None XOFF2
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#define EFR_SWFC_RX12 0x03 // None XOFF1 & XOFF2
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#define EFR_SWFC_TX1 0x08 // XOFF1 None
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#define EFR_SWFC_TX1_RX1 0x0a // XOFF1 XOFF1
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#define EFR_SWFC_TX1_RX2 0x09 // XOFF1 XOFF2
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#define EFR_SWFC_TX1_RX12 0x0b // XOFF1 XOFF1 & XOFF2
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#define EFR_SWFC_TX2 0x04 // XOFF2 None
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#define EFR_SWFC_TX2_RX1 0x06 // XOFF2 XOFF1
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#define EFR_SWFC_TX2_RX2 0x05 // XOFF2 XOFF2
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#define EFR_SWFC_TX2_RX12 0x07 // XOFF2 XOFF1 & XOFF2
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#define EFR_SWFC_TX12 0x0c // XOFF1 & XOFF2 None
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#define EFR_SWFC_TX12_RX1 0x0e // XOFF1 & XOFF2 XOFF1
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#define EFR_SWFC_TX12_RX2 0x0d // XOFF1 & XOFF2 XOFF2
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#define EFR_SWFC_TX12_RX12 0x0f // XOFF1 & XOFF2 XOFF1 & XOFF2
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#define EFR_TX_FC_MASK 0x0c // Mask to isolate Rx flow control
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#define EFR_TX_FC_NONE 0x00 // No Tx Xon/Xoff flow control
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#define EFR_TX_FC_X1 0x08 // Transmit Xon1/Xoff1
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#define EFR_TX_FC_X2 0x04 // Transmit Xon2/Xoff2
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#define EFR_TX_FC_X1_2 0x0c // Transmit Xon1&2/Xoff1&2
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#define EFR_RX_FC_MASK 0x03 // Mask to isolate Rx flow control
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#define EFR_RX_FC_NONE 0x00 // No Rx Xon/Xoff flow control
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#define EFR_RX_FC_X1 0x02 // Receiver compares Xon1/Xoff1
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#define EFR_RX_FC_X2 0x01 // Receiver compares Xon2/Xoff2
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#define EFR_RX_FC_X1_2 0x03 // Receiver compares Xon1&2/Xoff1&2
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#define EFR_SWFC_MASK 0x0F // Mask for software flow control field
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#define EFR_ENABLE_16654 0x10 // Enable 16C654 features
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#define EFR_SPEC_DETECT 0x20 // Enable special character detect interrupt
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#define EFR_AUTO_RTS 0x40 // Use RTS for Rx flow control
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#define EFR_AUTO_CTS 0x80 // Use CTS for Tx flow control
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#endif // if !defined(_16654_H)
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