diff options
Diffstat (limited to 'arch/mips/include/asm/netlogic/xlp-hal/uart.h')
| -rw-r--r-- | arch/mips/include/asm/netlogic/xlp-hal/uart.h | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/arch/mips/include/asm/netlogic/xlp-hal/uart.h b/arch/mips/include/asm/netlogic/xlp-hal/uart.h deleted file mode 100644 index a6c54424dd95..000000000000 --- a/arch/mips/include/asm/netlogic/xlp-hal/uart.h +++ /dev/null @@ -1,192 +0,0 @@ -/* - * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights - * reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the NetLogic - * license below: - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE - * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN - * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __XLP_HAL_UART_H__ -#define __XLP_HAL_UART_H__ - -/* UART Specific registers */ -#define UART_RX_DATA 0x00 -#define UART_TX_DATA 0x00 - -#define UART_INT_EN 0x01 -#define UART_INT_ID 0x02 -#define UART_FIFO_CTL 0x02 -#define UART_LINE_CTL 0x03 -#define UART_MODEM_CTL 0x04 -#define UART_LINE_STS 0x05 -#define UART_MODEM_STS 0x06 - -#define UART_DIVISOR0 0x00 -#define UART_DIVISOR1 0x01 - -#define BASE_BAUD (XLP_IO_CLK/16) -#define BAUD_DIVISOR(baud) (BASE_BAUD / baud) - -/* LCR mask values */ -#define LCR_5BITS 0x00 -#define LCR_6BITS 0x01 -#define LCR_7BITS 0x02 -#define LCR_8BITS 0x03 -#define LCR_STOPB 0x04 -#define LCR_PENAB 0x08 -#define LCR_PODD 0x00 -#define LCR_PEVEN 0x10 -#define LCR_PONE 0x20 -#define LCR_PZERO 0x30 -#define LCR_SBREAK 0x40 -#define LCR_EFR_ENABLE 0xbf -#define LCR_DLAB 0x80 - -/* MCR mask values */ -#define MCR_DTR 0x01 -#define MCR_RTS 0x02 -#define MCR_DRS 0x04 -#define MCR_IE 0x08 -#define MCR_LOOPBACK 0x10 - -/* FCR mask values */ -#define FCR_RCV_RST 0x02 -#define FCR_XMT_RST 0x04 -#define FCR_RX_LOW 0x00 -#define FCR_RX_MEDL 0x40 -#define FCR_RX_MEDH 0x80 -#define FCR_RX_HIGH 0xc0 - -/* IER mask values */ -#define IER_ERXRDY 0x1 -#define IER_ETXRDY 0x2 -#define IER_ERLS 0x4 -#define IER_EMSC 0x8 - -#if !defined(LOCORE) && !defined(__ASSEMBLY__) - -#define nlm_read_uart_reg(b, r) nlm_read_reg(b, r) -#define nlm_write_uart_reg(b, r, v) nlm_write_reg(b, r, v) -#define nlm_get_uart_pcibase(node, inst) \ - nlm_pcicfg_base(cpu_is_xlp9xx() ? XLP9XX_IO_UART_OFFSET(node) : \ - XLP_IO_UART_OFFSET(node, inst)) -#define nlm_get_uart_regbase(node, inst) \ - (nlm_get_uart_pcibase(node, inst) + XLP_IO_PCI_HDRSZ) - -static inline void -nlm_uart_set_baudrate(uint64_t base, int baud) -{ - uint32_t lcr; - - lcr = nlm_read_uart_reg(base, UART_LINE_CTL); - - /* enable divisor register, and write baud values */ - nlm_write_uart_reg(base, UART_LINE_CTL, lcr | (1 << 7)); - nlm_write_uart_reg(base, UART_DIVISOR0, - (BAUD_DIVISOR(baud) & 0xff)); - nlm_write_uart_reg(base, UART_DIVISOR1, - ((BAUD_DIVISOR(baud) >> 8) & 0xff)); - - /* restore default lcr */ - nlm_write_uart_reg(base, UART_LINE_CTL, lcr); -} - -static inline void -nlm_uart_outbyte(uint64_t base, char c) -{ - uint32_t lsr; - - for (;;) { - lsr = nlm_read_uart_reg(base, UART_LINE_STS); - if (lsr & 0x20) - break; - } - - nlm_write_uart_reg(base, UART_TX_DATA, (int)c); -} - -static inline char -nlm_uart_inbyte(uint64_t base) -{ - int data, lsr; - - for (;;) { - lsr = nlm_read_uart_reg(base, UART_LINE_STS); - if (lsr & 0x80) { /* parity/frame/break-error - push a zero */ - data = 0; - break; - } - if (lsr & 0x01) { /* Rx data */ - data = nlm_read_uart_reg(base, UART_RX_DATA); - break; - } - } - - return (char)data; -} - -static inline int -nlm_uart_init(uint64_t base, int baud, int databits, int stopbits, - int parity, int int_en, int loopback) -{ - uint32_t lcr; - - lcr = 0; - if (databits >= 8) - lcr |= LCR_8BITS; - else if (databits == 7) - lcr |= LCR_7BITS; - else if (databits == 6) - lcr |= LCR_6BITS; - else - lcr |= LCR_5BITS; - - if (stopbits > 1) - lcr |= LCR_STOPB; - - lcr |= parity << 3; - - /* setup default lcr */ - nlm_write_uart_reg(base, UART_LINE_CTL, lcr); - - /* Reset the FIFOs */ - nlm_write_uart_reg(base, UART_LINE_CTL, FCR_RCV_RST | FCR_XMT_RST); - - nlm_uart_set_baudrate(base, baud); - - if (loopback) - nlm_write_uart_reg(base, UART_MODEM_CTL, 0x1f); - - if (int_en) - nlm_write_uart_reg(base, UART_INT_EN, IER_ERXRDY | IER_ETXRDY); - - return 0; -} -#endif /* !LOCORE && !__ASSEMBLY__ */ -#endif /* __XLP_HAL_UART_H__ */ |