diff options
Diffstat (limited to 'arch/arm/include/asm/arch-arm720t/netarm_ser_module.h')
| -rw-r--r-- | arch/arm/include/asm/arch-arm720t/netarm_ser_module.h | 347 |
1 files changed, 347 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-arm720t/netarm_ser_module.h b/arch/arm/include/asm/arch-arm720t/netarm_ser_module.h new file mode 100644 index 0000000000..6fbae11c8d --- /dev/null +++ b/arch/arm/include/asm/arch-arm720t/netarm_ser_module.h @@ -0,0 +1,347 @@ +/* + * linux/include/asm-arm/arch-netarm/netarm_ser_module.h + * + * Copyright (C) 2000 NETsilicon, Inc. + * Copyright (C) 2000 Red Hat, Inc. + * + * This software is copyrighted by Red Hat. LICENSEE agrees that + * it will not delete this copyright notice, trademarks or protective + * notices from any copy made by LICENSEE. + * + * This software is provided "AS-IS" and any express or implied + * warranties or conditions, including but not limited to any + * implied warranties of merchantability and fitness for a particular + * purpose regarding this software. In no event shall Red Hat + * be liable for any indirect, consequential, or incidental damages, + * loss of profits or revenue, loss of use or data, or interruption + * of business, whether the alleged damages are labeled in contract, + * tort, or indemnity. + * + * 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. + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * author(s) : Joe deBlaquiere + * Clark Williams + */ + +#ifndef __NETARM_SER_MODULE_REGISTERS_H +#define __NETARM_SER_MODULE_REGISTERS_H + +#ifndef __ASSEMBLER__ + +/* (--sub)#include "types.h" */ + +/* serial channel control structure */ +typedef struct { + u32 ctrl_a; + u32 ctrl_b; + u32 status_a; + u32 bitrate; + u32 fifo; + u32 rx_buf_timer; + u32 rx_char_timer; + u32 rx_match; + u32 rx_match_mask; + u32 ctrl_c; + u32 status_b; + u32 status_c; + u32 fifo_last; + u32 unused[3]; +} netarm_serial_channel_t; + +#endif + +/* SER unit register offsets */ + +/* #ifdef CONFIG_ARCH_NETARM */ +#define NETARM_SER_MODULE_BASE (0xFFD00000) +/* #else */ +/* extern serial_channel_t netarm_dummy_registers[]; */ +/* #define NETARM_SER_MODULE_BASE (netarm_dummy_registers) */ +/* #ifndef NETARM_XTAL_FREQ */ +/* #define NETARM_XTAL_FREQ 18432000 */ +/* #endif */ +/* #endif */ + +/* calculate the sysclk value from the pll setting */ +#define NETARM_PLLED_SYSCLK_FREQ (( NETARM_XTAL_FREQ / 5 ) * \ + ( NETARM_PLL_COUNT_VAL + 3 )) + +#define get_serial_channel(c) (&(((netarm_serial_channel_t *)NETARM_SER_MODULE_BASE)[c])) + +#define NETARM_SER_CH1_CTRL_A (0x00) +#define NETARM_SER_CH1_CTRL_B (0x04) +#define NETARM_SER_CH1_STATUS_A (0x08) +#define NETARM_SER_CH1_BITRATE (0x0C) +#define NETARM_SER_CH1_FIFO (0x10) +#define NETARM_SER_CH1_RX_BUF_TMR (0x14) +#define NETARM_SER_CH1_RX_CHAR_TMR (0x18) +#define NETARM_SER_CH1_RX_MATCH (0x1c) +#define NETARM_SER_CH1_RX_MATCH_MASK (0x20) +#define NETARM_SER_CH1_CTRL_C (0x24) +#define NETARM_SER_CH1_STATUS_B (0x28) +#define NETARM_SER_CH1_STATUS_C (0x2c) +#define NETARM_SER_CH1_FIFO_LAST (0x30) + +#define NETARM_SER_CH2_CTRL_A (0x40) +#define NETARM_SER_CH2_CTRL_B (0x44) +#define NETARM_SER_CH2_STATUS_A (0x48) +#define NETARM_SER_CH2_BITRATE (0x4C) +#define NETARM_SER_CH2_FIFO (0x50) +#define NETARM_SER_CH2_RX_BUF_TMR (0x54) +#define NETARM_SER_CH2_RX_CHAR_TMR (0x58) +#define NETARM_SER_CH2_RX_MATCH (0x5c) +#define NETARM_SER_CH2_RX_MATCH_MASK (0x60) +#define NETARM_SER_CH2_CTRL_C (0x64) +#define NETARM_SER_CH2_STATUS_B (0x68) +#define NETARM_SER_CH2_STATUS_C (0x6c) +#define NETARM_SER_CH2_FIFO_LAST (0x70) + +/* select bitfield defintions */ + +/* Control Register A */ + +#define NETARM_SER_CTLA_ENABLE (0x80000000) +#define NETARM_SER_CTLA_BRK (0x40000000) + +#define NETARM_SER_CTLA_STICKP (0x20000000) + +#define NETARM_SER_CTLA_P_EVEN (0x18000000) +#define NETARM_SER_CTLA_P_ODD (0x08000000) +#define NETARM_SER_CTLA_P_NONE (0x00000000) + +/* if you read the errata, you will find that the STOP bits don't work right */ +#define NETARM_SER_CTLA_2STOP (0x00000000) +#define NETARM_SER_CTLA_3STOP (0x04000000) + +#define NETARM_SER_CTLA_5BITS (0x00000000) +#define NETARM_SER_CTLA_6BITS (0x01000000) +#define NETARM_SER_CTLA_7BITS (0x02000000) +#define NETARM_SER_CTLA_8BITS (0x03000000) + +#define NETARM_SER_CTLA_CTSTX (0x00800000) +#define NETARM_SER_CTLA_RTSRX (0x00400000) + +#define NETARM_SER_CTLA_LOOP_REM (0x00200000) +#define NETARM_SER_CTLA_LOOP_LOC (0x00100000) + +#define NETARM_SER_CTLA_GPIO2 (0x00080000) +#define NETARM_SER_CTLA_GPIO1 (0x00040000) + +#define NETARM_SER_CTLA_DTR_EN (0x00020000) +#define NETARM_SER_CTLA_RTS_EN (0x00010000) + +#define NETARM_SER_CTLA_IE_RX_BRK (0x00008000) +#define NETARM_SER_CTLA_IE_RX_FRMERR (0x00004000) +#define NETARM_SER_CTLA_IE_RX_PARERR (0x00002000) +#define NETARM_SER_CTLA_IE_RX_OVERRUN (0x00001000) +#define NETARM_SER_CTLA_IE_RX_RDY (0x00000800) +#define NETARM_SER_CTLA_IE_RX_HALF (0x00000400) +#define NETARM_SER_CTLA_IE_RX_FULL (0x00000200) +#define NETARM_SER_CTLA_IE_RX_DMAEN (0x00000100) +#define NETARM_SER_CTLA_IE_RX_DCD (0x00000080) +#define NETARM_SER_CTLA_IE_RX_RI (0x00000040) +#define NETARM_SER_CTLA_IE_RX_DSR (0x00000020) + +#define NETARM_SER_CTLA_IE_RX_ALL (NETARM_SER_CTLA_IE_RX_BRK \ + |NETARM_SER_CTLA_IE_RX_FRMERR \ + |NETARM_SER_CTLA_IE_RX_PARERR \ + |NETARM_SER_CTLA_IE_RX_OVERRUN \ + |NETARM_SER_CTLA_IE_RX_RDY \ + |NETARM_SER_CTLA_IE_RX_HALF \ + |NETARM_SER_CTLA_IE_RX_FULL \ + |NETARM_SER_CTLA_IE_RX_DMAEN \ + |NETARM_SER_CTLA_IE_RX_DCD \ + |NETARM_SER_CTLA_IE_RX_RI \ + |NETARM_SER_CTLA_IE_RX_DSR) + +#define NETARM_SER_CTLA_IE_TX_CTS (0x00000010) +#define NETARM_SER_CTLA_IE_TX_EMPTY (0x00000008) +#define NETARM_SER_CTLA_IE_TX_HALF (0x00000004) +#define NETARM_SER_CTLA_IE_TX_FULL (0x00000002) +#define NETARM_SER_CTLA_IE_TX_DMAEN (0x00000001) + +#define NETARM_SER_CTLA_IE_TX_ALL (NETARM_SER_CTLA_IE_TX_CTS \ + |NETARM_SER_CTLA_IE_TX_EMPTY \ + |NETARM_SER_CTLA_IE_TX_HALF \ + |NETARM_SER_CTLA_IE_TX_FULL \ + |NETARM_SER_CTLA_IE_TX_DMAEN) + +/* Control Register B */ + +#define NETARM_SER_CTLB_MATCH1_EN (0x80000000) +#define NETARM_SER_CTLB_MATCH2_EN (0x40000000) +#define NETARM_SER_CTLB_MATCH3_EN (0x20000000) +#define NETARM_SER_CTLB_MATCH4_EN (0x10000000) + +#define NETARM_SER_CTLB_RBGT_EN (0x08000000) +#define NETARM_SER_CTLB_RCGT_EN (0x04000000) + +#define NETARM_SER_CTLB_UART_MODE (0x00000000) +#define NETARM_SER_CTLB_HDLC_MODE (0x00100000) +#define NETARM_SER_CTLB_SPI_MAS_MODE (0x00200000) +#define NETARM_SER_CTLB_SPI_SLV_MODE (0x00300000) + +#define NETARM_SER_CTLB_REV_BIT_ORDER (0x00080000) + +#define NETARM_SER_CTLB_MAM1 (0x00040000) +#define NETARM_SER_CTLB_MAM2 (0x00020000) + +/* Status Register A */ + +#define NETARM_SER_STATA_MATCH1 (0x80000000) +#define NETARM_SER_STATA_MATCH2 (0x40000000) +#define NETARM_SER_STATA_MATCH3 (0x20000000) +#define NETARM_SER_STATA_MATCH4 (0x10000000) + +#define NETARM_SER_STATA_BGAP (0x80000000) +#define NETARM_SER_STATA_CGAP (0x40000000) + +#define NETARM_SER_STATA_RX_1B (0x00100000) +#define NETARM_SER_STATA_RX_2B (0x00200000) +#define NETARM_SER_STATA_RX_3B (0x00300000) +#define NETARM_SER_STATA_RX_4B (0x00000000) + +/* downshifted values */ + +#define NETARM_SER_STATA_RXFDB_1BYTES (0x001) +#define NETARM_SER_STATA_RXFDB_2BYTES (0x002) +#define NETARM_SER_STATA_RXFDB_3BYTES (0x003) +#define NETARM_SER_STATA_RXFDB_4BYTES (0x000) + +#define NETARM_SER_STATA_RXFDB_MASK (0x00300000) +#define NETARM_SER_STATA_RXFDB(x) (((x) & NETARM_SER_STATA_RXFDB_MASK) \ + >> 20) + +#define NETARM_SER_STATA_DCD (0x00080000) +#define NETARM_SER_STATA_RI (0x00040000) +#define NETARM_SER_STATA_DSR (0x00020000) +#define NETARM_SER_STATA_CTS (0x00010000) + +#define NETARM_SER_STATA_RX_BRK (0x00008000) +#define NETARM_SER_STATA_RX_FRMERR (0x00004000) +#define NETARM_SER_STATA_RX_PARERR (0x00002000) +#define NETARM_SER_STATA_RX_OVERRUN (0x00001000) +#define NETARM_SER_STATA_RX_RDY (0x00000800) +#define NETARM_SER_STATA_RX_HALF (0x00000400) +#define NETARM_SER_STATA_RX_CLOSED (0x00000200) +#define NETARM_SER_STATA_RX_FULL (0x00000100) +#define NETARM_SER_STATA_RX_DCD (0x00000080) +#define NETARM_SER_STATA_RX_RI (0x00000040) +#define NETARM_SER_STATA_RX_DSR (0x00000020) + +#define NETARM_SER_STATA_TX_CTS (0x00000010) +#define NETARM_SER_STATA_TX_RDY (0x00000008) +#define NETARM_SER_STATA_TX_HALF (0x00000004) +#define NETARM_SER_STATA_TX_FULL (0x00000002) +#define NETARM_SER_STATA_TX_DMAEN (0x00000001) + +/* you have to clear all receive signals to get the fifo to move forward */ +#define NETARM_SER_STATA_CLR_ALL (NETARM_SER_STATA_RX_BRK | \ + NETARM_SER_STATA_RX_FRMERR | \ + NETARM_SER_STATA_RX_PARERR | \ + NETARM_SER_STATA_RX_OVERRUN | \ + NETARM_SER_STATA_RX_HALF | \ + NETARM_SER_STATA_RX_CLOSED | \ + NETARM_SER_STATA_RX_FULL | \ + NETARM_SER_STATA_RX_DCD | \ + NETARM_SER_STATA_RX_RI | \ + NETARM_SER_STATA_RX_DSR | \ + NETARM_SER_STATA_TX_CTS ) + +/* Bit Rate Registers */ + +#define NETARM_SER_BR_EN (0x80000000) +#define NETARM_SER_BR_TMODE (0x40000000) + +#define NETARM_SER_BR_RX_CLK_INT (0x00000000) +#define NETARM_SER_BR_RX_CLK_EXT (0x20000000) +#define NETARM_SER_BR_TX_CLK_INT (0x00000000) +#define NETARM_SER_BR_TX_CLK_EXT (0x10000000) + +#define NETARM_SER_BR_RX_CLK_DRV (0x08000000) +#define NETARM_SER_BR_TX_CLK_DRV (0x04000000) + +#define NETARM_SER_BR_CLK_EXT_5 (0x00000000) +#define NETARM_SER_BR_CLK_SYSTEM (0x01000000) +#define NETARM_SER_BR_CLK_OUT1A (0x02000000) +#define NETARM_SER_BR_CLK_OUT2A (0x03000000) + +#define NETARM_SER_BR_TX_CLK_INV (0x00800000) +#define NETARM_SER_BR_RX_CLK_INV (0x00400000) + +/* complete settings assuming system clock input is 18MHz */ + +#define NETARM_SER_BR_MASK (0x000007FF) + +/* bit rate determined from equation Fbr = Fxtal / [ 10 * ( N + 1 ) ] */ +/* from section 7.5.4 of HW Ref Guide */ + +/* #ifdef CONFIG_NETARM_PLL_BYPASS */ +#define NETARM_SER_BR_X16(x) ( NETARM_SER_BR_EN | \ + NETARM_SER_BR_RX_CLK_INT | \ + NETARM_SER_BR_TX_CLK_INT | \ + NETARM_SER_BR_CLK_EXT_5 | \ + ( ( ( ( NETARM_XTAL_FREQ / \ + ( x * 10 ) ) - 1 ) / 16 ) & \ + NETARM_SER_BR_MASK ) ) +/* +#else +#define NETARM_SER_BR_X16(x) ( NETARM_SER_BR_EN | \ + NETARM_SER_BR_RX_CLK_INT | \ + NETARM_SER_BR_TX_CLK_INT | \ + NETARM_SER_BR_CLK_SYSTEM | \ + ( ( ( ( NETARM_PLLED_SYSCLK_FREQ / \ + ( x * 2 ) ) - 1 ) / 16 ) & \ + NETARM_SER_BR_MASK ) ) +#endif +*/ + +/* Receive Buffer Gap Timer */ + +#define NETARM_SER_RX_GAP_TIMER_EN (0x80000000) +#define NETARM_SER_RX_GAP_MASK (0x00003FFF) + +/* rx gap is a function of bit rate x */ + +/* #ifdef CONFIG_NETARM_PLL_BYPASS */ +#define NETARM_SER_RXGAP(x) ( NETARM_SER_RX_GAP_TIMER_EN | \ + ( ( ( ( 10 * NETARM_XTAL_FREQ ) / \ + ( x * 5 * 512 ) ) - 1 ) & \ + NETARM_SER_RX_GAP_MASK ) ) +/* +#else +#define NETARM_SER_RXGAP(x) ( NETARM_SER_RX_GAP_TIMER_EN | \ + ( ( ( ( 2 * NETARM_PLLED_SYSCLK_FREQ ) / \ + ( x * 512 ) ) - 1 ) & \ + NETARM_SER_RX_GAP_MASK ) ) +#endif +*/ + +#if 0 +#define NETARM_SER_RXGAP(x) ( NETARM_SER_RX_GAP_TIMER_EN | \ + ( ( ( ( 2 * NETARM_PLLED_SYSCLK_FREQ ) / \ + ( x * 5 * 512 ) ) - 1 ) & \ + NETARM_SER_RX_GAP_MASK ) ) +#define NETARM_SER_RXGAP(x) ( NETARM_SER_RX_GAP_TIMER_EN | \ + ( ( ( ( 10 * NETARM_XTAL_FREQ ) / \ + ( x * 512 ) ) - 1 ) & \ + NETARM_SER_RX_GAP_MASK ) ) +#endif + +#define MIN_BAUD_RATE 600 +#define MAX_BAUD_RATE 115200 + +/* the default BAUD rate for the BOOTLOADER, there is a separate */ +/* setting in the serial driver <arch/armnommu/drivers/char/serial-netarm.h> */ +#define DEFAULT_BAUD_RATE 9600 +#define NETARM_SER_FIFO_SIZE 32 +#define MIN_GAP 0 + +#endif |
