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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __HD64570_H
#define __HD64570_H
/* SCA HD64570 register definitions - all addresses for mode 0 (8086 MPU)
and 1 (64180 MPU). For modes 2 and 3, XOR the address with 0x01.
Source: HD64570 SCA User's Manual
*/
/* SCA Control Registers */
#define LPR 0x00 /* Low Power */
/* Wait controller registers */
#define PABR0 0x02 /* Physical Address Boundary 0 */
#define PABR1 0x03 /* Physical Address Boundary 1 */
#define WCRL 0x04 /* Wait Control L */
#define WCRM 0x05 /* Wait Control M */
#define WCRH 0x06 /* Wait Control H */
#define PCR 0x08 /* DMA Priority Control */
#define DMER 0x09 /* DMA Master Enable */
/* Interrupt registers */
#define ISR0 0x10 /* Interrupt Status 0 */
#define ISR1 0x11 /* Interrupt Status 1 */
#define ISR2 0x12 /* Interrupt Status 2 */
#define IER0 0x14 /* Interrupt Enable 0 */
#define IER1 0x15 /* Interrupt Enable 1 */
#define IER2 0x16 /* Interrupt Enable 2 */
#define ITCR 0x18 /* Interrupt Control */
#define IVR 0x1A /* Interrupt Vector */
#define IMVR 0x1C /* Interrupt Modified Vector */
/* MSCI channel (port) 0 registers - offset 0x20
MSCI channel (port) 1 registers - offset 0x40 */
#define MSCI0_OFFSET 0x20
#define MSCI1_OFFSET 0x40
#define TRBL 0x00 /* TX/RX buffer L */
#define TRBH 0x01 /* TX/RX buffer H */
#define ST0 0x02 /* Status 0 */
#define ST1 0x03 /* Status 1 */
#define ST2 0x04 /* Status 2 */
#define ST3 0x05 /* Status 3 */
#define FST 0x06 /* Frame Status */
#define IE0 0x08 /* Interrupt Enable 0 */
#define IE1 0x09 /* Interrupt Enable 1 */
#define IE2 0x0A /* Interrupt Enable 2 */
#define FIE 0x0B /* Frame Interrupt Enable */
#define CMD 0x0C /* Command */
#define MD0 0x0E /* Mode 0 */
#define MD1 0x0F /* Mode 1 */
#define MD2 0x10 /* Mode 2 */
#define CTL 0x11 /* Control */
#define SA0 0x12 /* Sync/Address 0 */
#define SA1 0x13 /* Sync/Address 1 */
#define IDL 0x14 /* Idle Pattern */
#define TMC 0x15 /* Time Constant */
#define RXS 0x16 /* RX Clock Source */
#define TXS 0x17 /* TX Clock Source */
#define TRC0 0x18 /* TX Ready Control 0 */
#define TRC1 0x19 /* TX Ready Control 1 */
#define RRC 0x1A /* RX Ready Control */
#define CST0 0x1C /* Current Status 0 */
#define CST1 0x1D /* Current Status 1 */
/* Timer channel 0 (port 0 RX) registers - offset 0x60
Timer channel 1 (port 0 TX) registers - offset 0x68
Timer channel 2 (port 1 RX) registers - offset 0x70
Timer channel 3 (port 1 TX) registers - offset 0x78
*/
#define TIMER0RX_OFFSET 0x60
#define TIMER0TX_OFFSET 0x68
#define TIMER1RX_OFFSET 0x70
#define TIMER1TX_OFFSET 0x78
#define TCNTL 0x00 /* Up-counter L */
#define TCNTH 0x01 /* Up-counter H */
#define TCONRL 0x02 /* Constant L */
#define TCONRH 0x03 /* Constant H */
#define TCSR 0x04 /* Control/Status */
#define TEPR 0x05 /* Expand Prescale */
/* DMA channel 0 (port 0 RX) registers - offset 0x80
DMA channel 1 (port 0 TX) registers - offset 0xA0
DMA channel 2 (port 1 RX) registers - offset 0xC0
DMA channel 3 (port 1 TX) registers - offset 0xE0
*/
#define DMAC0RX_OFFSET 0x80
#define DMAC0TX_OFFSET 0xA0
#define DMAC1RX_OFFSET 0xC0
#define DMAC1TX_OFFSET 0xE0
#define BARL 0x00 /* Buffer Address L (chained block) */
#define BARH 0x01 /* Buffer Address H (chained block) */
#define BARB 0x02 /* Buffer Address B (chained block) */
#define DARL 0x00 /* RX Destination Addr L (single block) */
#define DARH 0x01 /* RX Destination Addr H (single block) */
#define DARB 0x02 /* RX Destination Addr B (single block) */
#define SARL 0x04 /* TX Source Address L (single block) */
#define SARH 0x05 /* TX Source Address H (single block) */
#define SARB 0x06 /* TX Source Address B (single block) */
#define CPB 0x06 /* Chain Pointer Base (chained block) */
#define CDAL 0x08 /* Current Descriptor Addr L (chained block) */
#define CDAH 0x09 /* Current Descriptor Addr H (chained block) */
#define EDAL 0x0A /* Error Descriptor Addr L (chained block) */
#define EDAH 0x0B /* Error Descriptor Addr H (chained block) */
#define BFLL 0x0C /* RX Receive Buffer Length L (chained block)*/
#define BFLH 0x0D /* RX Receive Buffer Length H (chained block)*/
#define BCRL 0x0E /* Byte Count L */
#define BCRH 0x0F /* Byte Count H */
#define DSR 0x10 /* DMA Status */
#define DSR_RX(node) (DSR + (node ? DMAC1RX_OFFSET : DMAC0RX_OFFSET))
#define DSR_TX(node) (DSR + (node ? DMAC1TX_OFFSET : DMAC0TX_OFFSET))
#define DMR 0x11 /* DMA Mode */
#define DMR_RX(node) (DMR + (node ? DMAC1RX_OFFSET : DMAC0RX_OFFSET))
#define DMR_TX(node) (DMR + (node ? DMAC1TX_OFFSET : DMAC0TX_OFFSET))
#define FCT 0x13 /* Frame End Interrupt Counter */
#define FCT_RX(node) (FCT + (node ? DMAC1RX_OFFSET : DMAC0RX_OFFSET))
#define FCT_TX(node) (FCT + (node ? DMAC1TX_OFFSET : DMAC0TX_OFFSET))
#define DIR 0x14 /* DMA Interrupt Enable */
#define DIR_RX(node) (DIR + (node ? DMAC1RX_OFFSET : DMAC0RX_OFFSET))
#define DIR_TX(node) (DIR + (node ? DMAC1TX_OFFSET : DMAC0TX_OFFSET))
#define DCR 0x15 /* DMA Command */
#define DCR_RX(node) (DCR + (node ? DMAC1RX_OFFSET : DMAC0RX_OFFSET))
#define DCR_TX(node) (DCR + (node ? DMAC1TX_OFFSET : DMAC0TX_OFFSET))
/* Descriptor Structure */
typedef struct {
u16 cp; /* Chain Pointer */
u32 bp; /* Buffer Pointer (24 bits) */
u16 len; /* Data Length */
u8 stat; /* Status */
u8 unused; /* pads to 2-byte boundary */
}__packed pkt_desc;
/* Packet Descriptor Status bits */
#define ST_TX_EOM 0x80 /* End of frame */
#define ST_TX_EOT 0x01 /* End of transmission */
#define ST_RX_EOM 0x80 /* End of frame */
#define ST_RX_SHORT 0x40 /* Short frame */
#define ST_RX_ABORT 0x20 /* Abort */
#define ST_RX_RESBIT 0x10 /* Residual bit */
#define ST_RX_OVERRUN 0x08 /* Overrun */
#define ST_RX_CRC 0x04 /* CRC */
#define ST_ERROR_MASK 0x7C
#define DIR_EOTE 0x80 /* Transfer completed */
#define DIR_EOME 0x40 /* Frame Transfer Completed (chained-block) */
#define DIR_BOFE 0x20 /* Buffer Overflow/Underflow (chained-block)*/
#define DIR_COFE 0x10 /* Counter Overflow (chained-block) */
#define DSR_EOT 0x80 /* Transfer completed */
#define DSR_EOM 0x40 /* Frame Transfer Completed (chained-block) */
#define DSR_BOF 0x20 /* Buffer Overflow/Underflow (chained-block)*/
#define DSR_COF 0x10 /* Counter Overflow (chained-block) */
#define DSR_DE 0x02 /* DMA Enable */
#define DSR_DWE 0x01 /* DMA Write Disable */
/* DMA Master Enable Register (DMER) bits */
#define DMER_DME 0x80 /* DMA Master Enable */
#define CMD_RESET 0x21 /* Reset Channel */
#define CMD_TX_ENABLE 0x02 /* Start transmitter */
#define CMD_RX_ENABLE 0x12 /* Start receiver */
#define MD0_HDLC 0x80 /* Bit-sync HDLC mode */
#define MD0_CRC_ENA 0x04 /* Enable CRC code calculation */
#define MD0_CRC_CCITT 0x02 /* CCITT CRC instead of CRC-16 */
#define MD0_CRC_PR1 0x01 /* Initial all-ones instead of all-zeros */
#define MD0_CRC_NONE 0x00
#define MD0_CRC_16_0 0x04
#define MD0_CRC_16 0x05
#define MD0_CRC_ITU_0 0x06
#define MD0_CRC_ITU 0x07
#define MD2_NRZ 0x00
#define MD2_NRZI 0x20
#define MD2_MANCHESTER 0x80
#define MD2_FM_MARK 0xA0
#define MD2_FM_SPACE 0xC0
#define MD2_LOOPBACK 0x03 /* Local data Loopback */
#define CTL_NORTS 0x01
#define CTL_IDLE 0x10 /* Transmit an idle pattern */
#define CTL_UDRNC 0x20 /* Idle after CRC or FCS+flag transmission */
#define ST0_TXRDY 0x02 /* TX ready */
#define ST0_RXRDY 0x01 /* RX ready */
#define ST1_UDRN 0x80 /* MSCI TX underrun */
#define ST1_CDCD 0x04 /* DCD level changed */
#define ST3_CTS 0x08 /* modem input - /CTS */
#define ST3_DCD 0x04 /* modem input - /DCD */
#define IE0_TXINT 0x80 /* TX INT MSCI interrupt enable */
#define IE0_RXINTA 0x40 /* RX INT A MSCI interrupt enable */
#define IE1_UDRN 0x80 /* TX underrun MSCI interrupt enable */
#define IE1_CDCD 0x04 /* DCD level changed */
#define DCR_ABORT 0x01 /* Software abort command */
#define DCR_CLEAR_EOF 0x02 /* Clear EOF interrupt */
/* TX and RX Clock Source - RXS and TXS */
#define CLK_BRG_MASK 0x0F
#define CLK_LINE_RX 0x00 /* TX/RX clock line input */
#define CLK_LINE_TX 0x00 /* TX/RX line input */
#define CLK_BRG_RX 0x40 /* internal baud rate generator */
#define CLK_BRG_TX 0x40 /* internal baud rate generator */
#define CLK_RXCLK_TX 0x60 /* TX clock from RX clock */
#endif
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