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Code

cleaned up amazon serial and prom code

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8344 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
blogic 2007-08-05 08:53:07 +00:00
parent 3c77e53b3f
commit a4f37bc4de
3 changed files with 183 additions and 236 deletions
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26
target/linux/amazon-2.6/files/arch/mips/amazon/prom.c
View File

@ -1,6 +1,21 @@
/* /*
* copyright 2007 john crispin <blogic@openwrt.org> * 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright 2007 John Crispin <blogic@openwrt.org>
*/ */
#include <linux/init.h> #include <linux/init.h>
#include <linux/string.h> #include <linux/string.h>
#include <linux/ctype.h> #include <linux/ctype.h>
@ -17,11 +32,11 @@
void prom_putchar(char c) void prom_putchar(char c)
{ {
/* Wait for FIFO to empty */ /* Wait for FIFO to empty */
while (((*AMAZON_ASC_FSTAT) >> 8) != 0x00) ; while ((amazon_readl(AMAZON_ASC_FSTAT) >> 8) != 0x00) ;
/* Crude cr/nl handling is better than none */ /* Crude cr/nl handling is better than none */
if(c == '\n') if(c == '\n')
*AMAZON_ASC_TBUF=('\r'); amazon_writel('\r', AMAZON_ASC_TBUF);
*AMAZON_ASC_TBUF=(c); amazon_writel(c, AMAZON_ASC_TBUF);
} }
void prom_printf(const char * fmt, ...) void prom_printf(const char * fmt, ...)
@ -32,7 +47,8 @@ void prom_printf(const char * fmt, ...)
char buf[1024]; char buf[1024];
va_start(args, fmt); va_start(args, fmt);
l = vsprintf(buf, fmt, args); /* hopefully i < sizeof(buf) */ /* FIXME - hopefully i < sizeof(buf) */
l = vsprintf(buf, fmt, args);
va_end(args); va_end(args);
buf_end = buf + l; buf_end = buf + l;

218
target/linux/amazon-2.6/files/drivers/serial/amazon_asc.c
View File

@ -1,12 +1,6 @@
/* /*
* linux/drivers/char/amazon_asc.c
*
* Driver for AMAZONASC serial ports * Driver for AMAZONASC serial ports
* *
* Copyright (C) 2004 Infineon IFAP DC COM CPE
* Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2007 John Crispin <blogic@openwrt.org>
*
* Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
* Based on drivers/serial/serial_s3c2400.c * Based on drivers/serial/serial_s3c2400.c
* *
@ -24,9 +18,9 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* *
* $Id: amazon_asc.c,v 1.2 2005/04/01 02:40:48 pliu Exp $ * Copyright (C) 2004 Infineon IFAP DC COM CPE
* * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org>
* This is a generic driver for AMAZONASC-type serial ports. * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
*/ */
#include <linux/module.h> #include <linux/module.h>
@ -61,46 +55,23 @@
#define PORT_AMAZONASC 111 #define PORT_AMAZONASC 111
#if defined(CONFIG_SERIAL_AMAZONASC_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
#endif
#include <linux/serial_core.h> #include <linux/serial_core.h>
#define UART_NR 1 #define UART_NR 1
#define UART_DUMMY_UER_RX 1
#define SERIAL_AMAZONASC_MAJOR TTY_MAJOR #define SERIAL_AMAZONASC_MAJOR TTY_MAJOR
#define CALLOUT_AMAZONASC_MAJOR TTYAUX_MAJOR #define CALLOUT_AMAZONASC_MAJOR TTYAUX_MAJOR
#define SERIAL_AMAZONASC_MINOR 64 #define SERIAL_AMAZONASC_MINOR 64
#define SERIAL_AMAZONASC_NR UART_NR #define SERIAL_AMAZONASC_NR UART_NR
static void amazonasc_tx_chars(struct uart_port *port);
extern void prom_printf(const char * fmt, ...); extern void prom_printf(const char * fmt, ...);
static struct uart_port amazonasc_ports[UART_NR]; static struct uart_port amazonasc_ports[UART_NR];
static struct uart_driver amazonasc_reg; static struct uart_driver amazonasc_reg;
#ifdef CONFIG_SERIAL_AMAZONASC_CONSOLE /*SUPPORT_SYSRQ*/
static struct console amazonasc_console;
#endif
static unsigned int uartclk = 0; static unsigned int uartclk = 0;
#define SET_BIT(reg, mask) *reg |= (mask)
#define CLEAR_BIT(reg, mask) *reg &= (~mask)
#define CLEAR_BITS(reg, mask) CLEAR_BIT(reg, mask)
#define SET_BITS(reg, mask) SET_BIT(reg, mask)
#define SET_BITFIELD(reg, mask, off, val) \
{*reg &= (~mask); *reg |= (val << off);}
static void amazonasc_tx_chars(struct uart_port *port);
/* fake flag to indicate CREAD was not set -> throw away all bytes */
#define UART_DUMMY_UER_RX 1
/* macro to set the bit corresponding to an interrupt number */
#define BIT_NO(irq) (1 << (irq - 64))
#define SERIAL_DEBUG
extern unsigned int amazon_get_fpi_hz(void); extern unsigned int amazon_get_fpi_hz(void);
static int tx_enabled = 0;
static void amazonasc_stop_tx(struct uart_port *port) static void amazonasc_stop_tx(struct uart_port *port)
{ {
@ -122,7 +93,7 @@ static void amazonasc_start_tx(struct uart_port *port)
static void amazonasc_stop_rx(struct uart_port *port) static void amazonasc_stop_rx(struct uart_port *port)
{ {
/* clear the RX enable bit */ /* clear the RX enable bit */
*AMAZON_ASC_WHBCON = ASCWHBCON_CLRREN; amazon_writel(ASCWHBCON_CLRREN, AMAZON_ASC_WHBCON);
} }
static void amazonasc_enable_ms(struct uart_port *port) static void amazonasc_enable_ms(struct uart_port *port)
@ -136,14 +107,13 @@ amazonasc_rx_chars(struct uart_port *port)
{ {
struct tty_struct *tty = port->info->tty; struct tty_struct *tty = port->info->tty;
unsigned int ch = 0, rsr = 0, fifocnt; unsigned int ch = 0, rsr = 0, fifocnt;
unsigned long flags;
fifocnt = *AMAZON_ASC_FSTAT & ASCFSTAT_RXFFLMASK; fifocnt = amazon_readl(AMAZON_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;
while (fifocnt--) while (fifocnt--)
{ {
u8 flag = TTY_NORMAL; u8 flag = TTY_NORMAL;
ch = *AMAZON_ASC_RBUF; ch = amazon_readl(AMAZON_ASC_RBUF);
rsr = (*AMAZON_ASC_CON & ASCCON_ANY) | UART_DUMMY_UER_RX; rsr = (amazon_readl(AMAZON_ASC_CON) & ASCCON_ANY) | UART_DUMMY_UER_RX;
tty_flip_buffer_push(tty); tty_flip_buffer_push(tty);
port->icount.rx++; port->icount.rx++;
@ -154,14 +124,14 @@ amazonasc_rx_chars(struct uart_port *port)
if (rsr & ASCCON_ANY) { if (rsr & ASCCON_ANY) {
if (rsr & ASCCON_PE) { if (rsr & ASCCON_PE) {
port->icount.parity++; port->icount.parity++;
SET_BIT(AMAZON_ASC_WHBCON, ASCWHBCON_CLRPE); amazon_writel_masked(AMAZON_ASC_WHBCON, ASCWHBCON_CLRPE, ASCWHBCON_CLRPE);
} else if (rsr & ASCCON_FE) { } else if (rsr & ASCCON_FE) {
port->icount.frame++; port->icount.frame++;
SET_BIT(AMAZON_ASC_WHBCON, ASCWHBCON_CLRFE); amazon_writel_masked(AMAZON_ASC_WHBCON, ASCWHBCON_CLRFE, ASCWHBCON_CLRFE);
} }
if (rsr & ASCCON_OE) { if (rsr & ASCCON_OE) {
port->icount.overrun++; port->icount.overrun++;
SET_BIT(AMAZON_ASC_WHBCON, ASCWHBCON_CLROE); amazon_writel_masked(AMAZON_ASC_WHBCON, ASCWHBCON_CLROE, ASCWHBCON_CLROE);
} }
rsr &= port->read_status_mask; rsr &= port->read_status_mask;
@ -199,11 +169,11 @@ static void amazonasc_tx_chars(struct uart_port *port)
return; return;
} }
while (((*AMAZON_ASC_FSTAT & ASCFSTAT_TXFFLMASK) while (((amazon_readl(AMAZON_ASC_FSTAT) & ASCFSTAT_TXFFLMASK)
>> ASCFSTAT_TXFFLOFF) != AMAZONASC_TXFIFO_FULL) >> ASCFSTAT_TXFFLOFF) != AMAZONASC_TXFIFO_FULL)
{ {
if (port->x_char) { if (port->x_char) {
*AMAZON_ASC_TBUF = port->x_char; amazon_writel(port->x_char, AMAZON_ASC_TBUF);
port->icount.tx++; port->icount.tx++;
port->x_char = 0; port->x_char = 0;
continue; continue;
@ -212,7 +182,7 @@ static void amazonasc_tx_chars(struct uart_port *port)
if (uart_circ_empty(xmit)) if (uart_circ_empty(xmit))
break; break;
*AMAZON_ASC_TBUF = xmit->buf[xmit->tail]; amazon_writel(xmit->buf[xmit->tail], AMAZON_ASC_TBUF);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++; port->icount.tx++;
} }
@ -223,13 +193,13 @@ static void amazonasc_tx_chars(struct uart_port *port)
static irqreturn_t amazonasc_tx_int(int irq, void *port) static irqreturn_t amazonasc_tx_int(int irq, void *port)
{ {
*(AMAZON_ASC_IRNCR1) = ASC_IRNCR_TIR; amazon_writel(ASC_IRNCR_TIR, AMAZON_ASC_IRNCR1);
amazonasc_start_tx(port); amazonasc_start_tx(port);
/* clear any pending interrupts */ /* clear any pending interrupts */
SET_BIT(AMAZON_ASC_WHBCON, ASCWHBCON_CLRPE); amazon_writel_masked(AMAZON_ASC_WHBCON,
SET_BIT(AMAZON_ASC_WHBCON, ASCWHBCON_CLRFE); (ASCWHBCON_CLRPE | ASCWHBCON_CLRFE | ASCWHBCON_CLROE),
SET_BIT(AMAZON_ASC_WHBCON, ASCWHBCON_CLROE); (ASCWHBCON_CLRPE | ASCWHBCON_CLRFE | ASCWHBCON_CLROE));
return IRQ_HANDLED; return IRQ_HANDLED;
} }
@ -237,15 +207,16 @@ static irqreturn_t amazonasc_tx_int(int irq, void *port)
static irqreturn_t amazonasc_er_int(int irq, void *port) static irqreturn_t amazonasc_er_int(int irq, void *port)
{ {
/* clear any pending interrupts */ /* clear any pending interrupts */
SET_BIT(AMAZON_ASC_WHBCON, ASCWHBCON_CLRPE); amazon_writel_masked(AMAZON_ASC_WHBCON,
SET_BIT(AMAZON_ASC_WHBCON, ASCWHBCON_CLRFE); (ASCWHBCON_CLRPE | ASCWHBCON_CLRFE | ASCWHBCON_CLROE),
SET_BIT(AMAZON_ASC_WHBCON, ASCWHBCON_CLROE); (ASCWHBCON_CLRPE | ASCWHBCON_CLRFE | ASCWHBCON_CLROE));
return IRQ_HANDLED; return IRQ_HANDLED;
} }
static irqreturn_t amazonasc_rx_int(int irq, void *port) static irqreturn_t amazonasc_rx_int(int irq, void *port)
{ {
*(AMAZON_ASC_IRNCR1) = ASC_IRNCR_RIR; amazon_writel(ASC_IRNCR_RIR, AMAZON_ASC_IRNCR1);
amazonasc_rx_chars((struct uart_port *) port); amazonasc_rx_chars((struct uart_port *) port);
return IRQ_HANDLED; return IRQ_HANDLED;
} }
@ -260,7 +231,7 @@ static u_int amazonasc_tx_empty(struct uart_port *port)
* 16 bytes to be transmitted before reporting that the * 16 bytes to be transmitted before reporting that the
* transmitter is empty. * transmitter is empty.
*/ */
status = *AMAZON_ASC_FSTAT & ASCFSTAT_TXFFLMASK; status = amazon_readl(AMAZON_ASC_FSTAT) & ASCFSTAT_TXFFLMASK;
return status ? 0 : TIOCSER_TEMT; return status ? 0 : TIOCSER_TEMT;
} }
@ -294,7 +265,6 @@ static int amazonasc_startup(struct uart_port *port)
amazonasc_ports[0].uartclk = uartclk; amazonasc_ports[0].uartclk = uartclk;
/* block the IRQs */
local_irq_save(flags); local_irq_save(flags);
/* this setup was probably already done in u-boot */ /* this setup was probably already done in u-boot */
@ -302,61 +272,45 @@ static int amazonasc_startup(struct uart_port *port)
* P1.3 (RX) in, Alternate 10 * P1.3 (RX) in, Alternate 10
* P1.4 (TX) in, Alternate 10 * P1.4 (TX) in, Alternate 10
*/ */
SET_BITFIELD((AMAZON_GPIO_P1_DIR), 0x8, 4, 1); //P1.4 output, P1.3 input amazon_writel_masked(AMAZON_GPIO_P1_DIR, 0x18, 0x10); //P1.4 output, P1.3 input
SET_BIT((AMAZON_GPIO_P1_ALTSEL0), 0x18); //ALTSETL0 11 amazon_writel_masked(AMAZON_GPIO_P1_ALTSEL0, 0x18, 0x18); //ALTSETL0 11
CLEAR_BIT((AMAZON_GPIO_P1_ALTSEL1), 0x18); //ALTSETL1 00 amazon_writel_masked(AMAZON_GPIO_P1_ALTSEL1, 0x18, 0); //ALTSETL1 00
SET_BITFIELD((AMAZON_GPIO_P1_OD), 0x8, 4, 1); amazon_writel_masked(AMAZON_GPIO_P1_OD, 0x18, 0x10);
/* set up the CLC */ /* set up the CLC */
CLEAR_BIT(AMAZON_ASC_CLC, AMAZON_ASC_CLC_DISS); amazon_writel_masked(AMAZON_ASC_CLC, AMAZON_ASC_CLC_DISS, 0);
SET_BITFIELD(AMAZON_ASC_CLC, ASCCLC_RMCMASK, ASCCLC_RMCOFFSET, 1); amazon_writel_masked(AMAZON_ASC_CLC, ASCCLC_RMCMASK, 1 << ASCCLC_RMCOFFSET);
/* asynchronous mode */ /* asynchronous mode */
con = ASCCON_M_8ASYNC; con = ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_OEN | ASCCON_PEN;
/* set error signals - framing and overrun */
con |= ASCCON_FEN;
con |= ASCCON_OEN;
con |= ASCCON_PEN;
/* choose the line - there's only one */ /* choose the line - there's only one */
*AMAZON_ASC_PISEL = 0; amazon_writel(0, AMAZON_ASC_PISEL);
#if 1 amazon_writel(((AMAZONASC_TXFIFO_FL << ASCTXFCON_TXFITLOFF) & ASCTXFCON_TXFITLMASK) | ASCTXFCON_TXFEN | ASCTXFCON_TXFFLU,
*AMAZON_ASC_TXFCON = (((AMAZONASC_TXFIFO_FL<<ASCTXFCON_TXFITLOFF)&ASCTXFCON_TXFITLMASK) | ASCTXFCON_TXFEN |ASCTXFCON_TXFFLU); AMAZON_ASC_TXFCON);
*AMAZON_ASC_RXFCON = (((AMAZONASC_RXFIFO_FL<<ASCRXFCON_RXFITLOFF)&ASCRXFCON_RXFITLMASK) | ASCRXFCON_RXFEN |ASCRXFCON_RXFFLU); amazon_writel(((AMAZONASC_RXFIFO_FL << ASCRXFCON_RXFITLOFF) & ASCRXFCON_RXFITLMASK) | ASCRXFCON_RXFEN | ASCRXFCON_RXFFLU,
AMAZON_ASC_RXFCON);
wmb(); wmb();
#else
/* TXFIFO's fill level */ amazon_writel_masked(AMAZON_ASC_CON, con, con);
SET_BITFIELD(AMAZON_ASC_TXFCON, ASCTXFCON_TXFITLMASK,
ASCTXFCON_TXFITLOFF, AMAZONASC_TXFIFO_FL);
/* enable TXFIFO */
SET_BIT(AMAZON_ASC_TXFCON, ASCTXFCON_TXFEN);
/* RXFIFO's fill level */
SET_BITFIELD(AMAZON_ASC_RXFCON, ASCRXFCON_RXFITLMASK,
ASCRXFCON_RXFITLOFF, AMAZONASC_RXFIFO_FL);
/* enable RXFIFO */
SET_BIT(AMAZON_ASC_RXFCON, ASCRXFCON_RXFEN);
/* now really set CON */
#endif
SET_BIT(AMAZON_ASC_CON,con);
/*
* Allocate the IRQs
*/
retval = request_irq(AMAZONASC_RIR, amazonasc_rx_int, 0, "asc_rx", port); retval = request_irq(AMAZONASC_RIR, amazonasc_rx_int, 0, "asc_rx", port);
if (retval){ if (retval){
printk("-------req1 failed\n"); printk("failed to request amazonasc_rx_int\n");
return retval; return retval;
} }
retval = request_irq(AMAZONASC_TIR, amazonasc_tx_int, 0, "asc_tx", port); retval = request_irq(AMAZONASC_TIR, amazonasc_tx_int, 0, "asc_tx", port);
if (retval){ if (retval){
printk("----------req2 failed\n"); printk("failed to request amazonasc_tx_int\n");
goto err1; goto err1;
} }
retval = request_irq(AMAZONASC_EIR, amazonasc_er_int, 0, "asc_er", port); retval = request_irq(AMAZONASC_EIR, amazonasc_er_int, 0, "asc_er", port);
if (retval){ if (retval){
printk("---------req3 failed\n"); printk("failed to request amazonasc_er_int\n");
goto err2; goto err2;
} }
/* unblock the IRQs */
local_irq_restore(flags); local_irq_restore(flags);
return 0; return 0;
@ -371,22 +325,19 @@ err1:
static void amazonasc_shutdown(struct uart_port *port) static void amazonasc_shutdown(struct uart_port *port)
{ {
/*
* Free the interrupts
*/
free_irq(AMAZONASC_RIR, port); free_irq(AMAZONASC_RIR, port);
free_irq(AMAZONASC_TIR, port); free_irq(AMAZONASC_TIR, port);
free_irq(AMAZONASC_EIR, port); free_irq(AMAZONASC_EIR, port);
/* /*
* disable the baudrate generator to disable the ASC * disable the baudrate generator to disable the ASC
*/ */
*AMAZON_ASC_CON = 0; amazon_writel(0, AMAZON_ASC_CON);
/* flush and then disable the fifos */ /* flush and then disable the fifos */
SET_BIT(AMAZON_ASC_RXFCON, ASCRXFCON_RXFFLU); amazon_writel_masked(AMAZON_ASC_RXFCON, ASCRXFCON_RXFFLU, ASCRXFCON_RXFFLU);
CLEAR_BIT(AMAZON_ASC_RXFCON, ASCRXFCON_RXFEN); amazon_writel_masked(AMAZON_ASC_RXFCON, ASCRXFCON_RXFEN, 0);
SET_BIT(AMAZON_ASC_TXFCON, ASCTXFCON_TXFFLU); amazon_writel_masked(AMAZON_ASC_TXFCON, ASCTXFCON_TXFFLU, ASCTXFCON_TXFFLU);
CLEAR_BIT(AMAZON_ASC_TXFCON, ASCTXFCON_TXFEN); amazon_writel_masked(AMAZON_ASC_TXFCON, ASCTXFCON_TXFEN, 0);
} }
static void amazonasc_set_termios(struct uart_port *port, struct ktermios *new, struct ktermios *old) static void amazonasc_set_termios(struct uart_port *port, struct ktermios *new, struct ktermios *old)
@ -426,23 +377,12 @@ static void amazonasc_set_termios(struct uart_port *port, struct ktermios *new,
port->read_status_mask = ASCCON_OE; port->read_status_mask = ASCCON_OE;
if (iflag & INPCK) if (iflag & INPCK)
port->read_status_mask |= ASCCON_FE | ASCCON_PE; port->read_status_mask |= ASCCON_FE | ASCCON_PE;
/* the ASC can't really detect or generate a BREAK */
#if 0
if (iflag & (BRKINT | PARMRK))
port->read_status_mask |= UERSTAT_BREAK;
#endif
/*
* Characters to ignore
*/
port->ignore_status_mask = 0; port->ignore_status_mask = 0;
if (iflag & IGNPAR) if (iflag & IGNPAR)
port->ignore_status_mask |= ASCCON_FE | ASCCON_PE; port->ignore_status_mask |= ASCCON_FE | ASCCON_PE;
#if 0
/* always ignore breaks - the ASC can't handle them XXXX */
port->ignore_status_mask |= UERSTAT_BREAK;
#endif
if (iflag & IGNBRK) { if (iflag & IGNBRK) {
/*port->ignore_status_mask |= UERSTAT_BREAK;*/
/* /*
* If we're ignoring parity and break indicators, * If we're ignoring parity and break indicators,
* ignore overruns too (for real raw support). * ignore overruns too (for real raw support).
@ -468,7 +408,7 @@ static void amazonasc_set_termios(struct uart_port *port, struct ktermios *new,
local_irq_save(flags); local_irq_save(flags);
/* set up CON */ /* set up CON */
*AMAZON_ASC_CON = con; amazon_writel(con, AMAZON_ASC_CON);
/* Set baud rate - take a divider of 2 into account */ /* Set baud rate - take a divider of 2 into account */
baud = uart_get_baud_rate(port, new, old, 0, port->uartclk/16); baud = uart_get_baud_rate(port, new, old, 0, port->uartclk/16);
@ -477,17 +417,16 @@ static void amazonasc_set_termios(struct uart_port *port, struct ktermios *new,
/* the next 3 probably already happened when we set CON above */ /* the next 3 probably already happened when we set CON above */
/* disable the baudrate generator */ /* disable the baudrate generator */
CLEAR_BIT(AMAZON_ASC_CON, ASCCON_R); amazon_writel_masked(AMAZON_ASC_CON, ASCCON_R, 0);
/* make sure the fractional divider is off */ /* make sure the fractional divider is off */
CLEAR_BIT(AMAZON_ASC_CON, ASCCON_FDE); amazon_writel_masked(AMAZON_ASC_CON, ASCCON_FDE, 0);
/* set up to use divisor of 2 */ /* set up to use divisor of 2 */
CLEAR_BIT(AMAZON_ASC_CON, ASCCON_BRS); amazon_writel_masked(AMAZON_ASC_CON, ASCCON_BRS, 0);
/* now we can write the new baudrate into the register */ /* now we can write the new baudrate into the register */
*AMAZON_ASC_BTR = quot; amazon_writel(quot, AMAZON_ASC_BTR);
/* turn the baudrate generator back on */ /* turn the baudrate generator back on */
SET_BIT(AMAZON_ASC_CON, ASCCON_R); amazon_writel_masked(AMAZON_ASC_CON, ASCCON_R, ASCCON_R);
/* unblock the IRQs */
local_irq_restore(flags); local_irq_restore(flags);
} }
@ -539,18 +478,18 @@ static int amazonasc_verify_port(struct uart_port *port, struct serial_struct *s
} }
static struct uart_ops amazonasc_pops = { static struct uart_ops amazonasc_pops = {
.tx_empty = amazonasc_tx_empty, .tx_empty = amazonasc_tx_empty,
.set_mctrl = amazonasc_set_mctrl, .set_mctrl = amazonasc_set_mctrl,
.get_mctrl = amazonasc_get_mctrl, .get_mctrl = amazonasc_get_mctrl,
.stop_tx = amazonasc_stop_tx, .stop_tx = amazonasc_stop_tx,
.start_tx = amazonasc_start_tx, .start_tx = amazonasc_start_tx,
.stop_rx = amazonasc_stop_rx, .stop_rx = amazonasc_stop_rx,
.enable_ms = amazonasc_enable_ms, .enable_ms = amazonasc_enable_ms,
.break_ctl = amazonasc_break_ctl, .break_ctl = amazonasc_break_ctl,
.startup = amazonasc_startup, .startup = amazonasc_startup,
.shutdown = amazonasc_shutdown, .shutdown = amazonasc_shutdown,
.set_termios = amazonasc_set_termios, .set_termios = amazonasc_set_termios,
.type = amazonasc_type, .type = amazonasc_type,
.release_port = amazonasc_release_port, .release_port = amazonasc_release_port,
.request_port = amazonasc_request_port, .request_port = amazonasc_request_port,
.config_port = amazonasc_config_port, .config_port = amazonasc_config_port,
@ -572,45 +511,36 @@ static struct uart_port amazonasc_ports[UART_NR] = {
}, },
}; };
static void amazonasc_console_write(struct console *co, const char *s, u_int count) static void amazonasc_console_write(struct console *co, const char *s, u_int count)
{ {
int i, fifocnt; int i, fifocnt;
unsigned long flags; unsigned long flags;
/* block the IRQ */
local_irq_save(flags); local_irq_save(flags);
/*
* Now, do each character
*/
for (i = 0; i < count;) for (i = 0; i < count;)
{ {
/* wait until the FIFO is not full */ /* wait until the FIFO is not full */
do do
{ {
fifocnt = (*AMAZON_ASC_FSTAT & ASCFSTAT_TXFFLMASK) fifocnt = (amazon_readl(AMAZON_ASC_FSTAT) & ASCFSTAT_TXFFLMASK)
>> ASCFSTAT_TXFFLOFF; >> ASCFSTAT_TXFFLOFF;
} while (fifocnt == AMAZONASC_TXFIFO_FULL); } while (fifocnt == AMAZONASC_TXFIFO_FULL);
#if 1
if (s[i] == '\0') if (s[i] == '\0')
{ {
break; break;
} }
#endif
if (s[i] == '\n') if (s[i] == '\n')
{ {
*AMAZON_ASC_TBUF = '\r'; amazon_writel('\r', AMAZON_ASC_TBUF);
do do
{ {
fifocnt = (*AMAZON_ASC_FSTAT & fifocnt = (amazon_readl(AMAZON_ASC_FSTAT) &
ASCFSTAT_TXFFLMASK) >> ASCFSTAT_TXFFLOFF; ASCFSTAT_TXFFLMASK) >> ASCFSTAT_TXFFLOFF;
} while (fifocnt == AMAZONASC_TXFIFO_FULL); } while (fifocnt == AMAZONASC_TXFIFO_FULL);
} }
*AMAZON_ASC_TBUF = s[i]; amazon_writel(s[i], AMAZON_ASC_TBUF);
i++; i++;
} /* for */ }
/* restore the IRQ */
local_irq_restore(flags); local_irq_restore(flags);
} }
@ -619,7 +549,7 @@ amazonasc_console_get_options(struct uart_port *port, int *baud, int *parity, in
{ {
u_int lcr_h; u_int lcr_h;
lcr_h = *AMAZON_ASC_CON; lcr_h = amazon_readl(AMAZON_ASC_CON);
/* do this only if the ASC is turned on */ /* do this only if the ASC is turned on */
if (lcr_h & ASCCON_R) { if (lcr_h & ASCCON_R) {
u_int quot, div, fdiv, frac; u_int quot, div, fdiv, frac;
@ -638,13 +568,13 @@ amazonasc_console_get_options(struct uart_port *port, int *baud, int *parity, in
else else
*bits = 8; *bits = 8;
quot = *AMAZON_ASC_BTR + 1; quot = amazon_readl(AMAZON_ASC_BTR) + 1;
/* this gets hairy if the fractional divider is used */ /* this gets hairy if the fractional divider is used */
if (lcr_h & ASCCON_FDE) if (lcr_h & ASCCON_FDE)
{ {
div = 1; div = 1;
fdiv = *AMAZON_ASC_FDV; fdiv = amazon_readl(AMAZON_ASC_FDV);
if (fdiv == 0) if (fdiv == 0)
fdiv = 512; fdiv = 512;
frac = 512; frac = 512;

175
target/linux/amazon-2.6/files/include/asm-mips/amazon/amazon.h
View File

@ -25,8 +25,9 @@
other party has been advised of the possibility of such damages. other party has been advised of the possibility of such damages.
******************************************************************************/ ******************************************************************************/
#define amazon_readl(a) readl(((u32*)(a))) #define amazon_readl(a) readl(((u32*)(a)))
#define amazon_writel(a,b) writel(a, ((u32*)(b))) #define amazon_writel(a,b) writel(a, ((u32*)(b)))
#define amazon_writel_masked(a,b,c) writel((readl(((u32*)(a))) & ~b) | (c & b), ((u32*)(a)))
/* check ADSL link status */ /* check ADSL link status */
#define AMAZON_CHECK_LINK #define AMAZON_CHECK_LINK
@ -625,124 +626,124 @@ If set and clear bit are written concurrently with 1, the associated bit is not
/***ASC Port Input Select Register***/ /***ASC Port Input Select Register***/
#define AMAZON_ASC_PISEL ((volatile u32*)(AMAZON_ASC+ 0x0004)) #define AMAZON_ASC_PISEL (AMAZON_ASC+ 0x0004)
#define AMAZON_ASC_PISEL_RIS (1 << 0) #define AMAZON_ASC_PISEL_RIS (1 << 0)
/***ASC Control Register***/ /***ASC Control Register***/
#define AMAZON_ASC_CON ((volatile u32*)(AMAZON_ASC+ 0x0010)) #define AMAZON_ASC_CON (AMAZON_ASC+ 0x0010)
#define AMAZON_ASC_CON_R (1 << 15) #define AMAZON_ASC_CON_R (1 << 15)
#define AMAZON_ASC_CON_LB (1 << 14) #define AMAZON_ASC_CON_LB (1 << 14)
#define AMAZON_ASC_CON_BRS (1 << 13) #define AMAZON_ASC_CON_BRS (1 << 13)
#define AMAZON_ASC_CON_ODD (1 << 12) #define AMAZON_ASC_CON_ODD (1 << 12)
#define AMAZON_ASC_CON_FDE (1 << 11) #define AMAZON_ASC_CON_FDE (1 << 11)
#define AMAZON_ASC_CON_OE (1 << 10) #define AMAZON_ASC_CON_OE (1 << 10)
#define AMAZON_ASC_CON_FE (1 << 9) #define AMAZON_ASC_CON_FE (1 << 9)
#define AMAZON_ASC_CON_PE (1 << 8) #define AMAZON_ASC_CON_PE (1 << 8)
#define AMAZON_ASC_CON_OEN (1 << 7) #define AMAZON_ASC_CON_OEN (1 << 7)
#define AMAZON_ASC_CON_FEN (1 << 6) #define AMAZON_ASC_CON_FEN (1 << 6)
#define AMAZON_ASC_CON_PENRXDI (1 << 5) #define AMAZON_ASC_CON_PENRXDI (1 << 5)
#define AMAZON_ASC_CON_REN (1 << 4) #define AMAZON_ASC_CON_REN (1 << 4)
#define AMAZON_ASC_CON_STP (1 << 3) #define AMAZON_ASC_CON_STP (1 << 3)
#define AMAZON_ASC_CON_M(value) (((( 1 << 3) - 1) & (value)) << 0) #define AMAZON_ASC_CON_M(value) (((( 1 << 3) - 1) & (value)) << 0)
/***ASC Write Hardware Modified Control Register***/ /***ASC Write Hardware Modified Control Register***/
#define AMAZON_ASC_WHBCON ((volatile u32*)(AMAZON_ASC+ 0x0050)) #define AMAZON_ASC_WHBCON (AMAZON_ASC+ 0x0050)
#define AMAZON_ASC_WHBCON_SETOE (1 << 13) #define AMAZON_ASC_WHBCON_SETOE (1 << 13)
#define AMAZON_ASC_WHBCON_SETFE (1 << 12) #define AMAZON_ASC_WHBCON_SETFE (1 << 12)
#define AMAZON_ASC_WHBCON_SETPE (1 << 11) #define AMAZON_ASC_WHBCON_SETPE (1 << 11)
#define AMAZON_ASC_WHBCON_CLROE (1 << 10) #define AMAZON_ASC_WHBCON_CLROE (1 << 10)
#define AMAZON_ASC_WHBCON_CLRFE (1 << 9) #define AMAZON_ASC_WHBCON_CLRFE (1 << 9)
#define AMAZON_ASC_WHBCON_CLRPE (1 << 8) #define AMAZON_ASC_WHBCON_CLRPE (1 << 8)
#define AMAZON_ASC_WHBCON_SETREN (1 << 5) #define AMAZON_ASC_WHBCON_SETREN (1 << 5)
#define AMAZON_ASC_WHBCON_CLRREN (1 << 4) #define AMAZON_ASC_WHBCON_CLRREN (1 << 4)
/***ASC Baudrate Timer/Reload Register***/ /***ASC Baudrate Timer/Reload Register***/
#define AMAZON_ASC_BTR ((volatile u32*)(AMAZON_ASC+ 0x0014)) #define AMAZON_ASC_BTR (AMAZON_ASC+ 0x0014)
#define AMAZON_ASC_BTR_BR_VALUE(value) (((( 1 << 13) - 1) & (value)) << 0) #define AMAZON_ASC_BTR_BR_VALUE(value) (((( 1 << 13) - 1) & (value)) << 0)
/***ASC Fractional Divider Register***/ /***ASC Fractional Divider Register***/
#define AMAZON_ASC_FDV ((volatile u32*)(AMAZON_ASC+ 0x0018)) #define AMAZON_ASC_FDV (AMAZON_ASC+ 0x0018)
#define AMAZON_ASC_FDV_FD_VALUE(value) (((( 1 << 9) - 1) & (value)) << 0) #define AMAZON_ASC_FDV_FD_VALUE(value) (((( 1 << 9) - 1) & (value)) << 0)
/***ASC IrDA Pulse Mode/Width Register***/ /***ASC IrDA Pulse Mode/Width Register***/
#define AMAZON_ASC_PMW ((volatile u32*)(AMAZON_ASC+ 0x001C)) #define AMAZON_ASC_PMW (AMAZON_ASC+ 0x001C)
#define AMAZON_ASC_PMW_IRPW (1 << 8) #define AMAZON_ASC_PMW_IRPW (1 << 8)
#define AMAZON_ASC_PMW_PW_VALUE(value) (((( 1 << 8) - 1) & (value)) << 0) #define AMAZON_ASC_PMW_PW_VALUE(value) (((( 1 << 8) - 1) & (value)) << 0)
/***ASC Transmit Buffer Register***/ /***ASC Transmit Buffer Register***/
#define AMAZON_ASC_TBUF ((volatile u32*)(AMAZON_ASC+ 0x0020)) #define AMAZON_ASC_TBUF (AMAZON_ASC+ 0x0020)
#define AMAZON_ASC_TBUF_TD_VALUE(value) (((( 1 << 9) - 1) & (value)) << 0) #define AMAZON_ASC_TBUF_TD_VALUE(value) (((( 1 << 9) - 1) & (value)) << 0)
/***ASC Receive Buffer Register***/ /***ASC Receive Buffer Register***/
#define AMAZON_ASC_RBUF ((volatile u32*)(AMAZON_ASC+ 0x0024)) #define AMAZON_ASC_RBUF (AMAZON_ASC+ 0x0024)
#define AMAZON_ASC_RBUF_RD_VALUE(value) (((( 1 << 9) - 1) & (value)) << 0) #define AMAZON_ASC_RBUF_RD_VALUE(value) (((( 1 << 9) - 1) & (value)) << 0)
/***ASC Autobaud Control Register***/ /***ASC Autobaud Control Register***/
#define AMAZON_ASC_ABCON ((volatile u32*)(AMAZON_ASC+ 0x0030)) #define AMAZON_ASC_ABCON (AMAZON_ASC+ 0x0030)
#define AMAZON_ASC_ABCON_RXINV (1 << 11) #define AMAZON_ASC_ABCON_RXINV (1 << 11)
#define AMAZON_ASC_ABCON_TXINV (1 << 10) #define AMAZON_ASC_ABCON_TXINV (1 << 10)
#define AMAZON_ASC_ABCON_ABEM(value) (((( 1 << 2) - 1) & (value)) << 8) #define AMAZON_ASC_ABCON_ABEM(value) (((( 1 << 2) - 1) & (value)) << 8)
#define AMAZON_ASC_ABCON_FCDETEN (1 << 4) #define AMAZON_ASC_ABCON_FCDETEN (1 << 4)
#define AMAZON_ASC_ABCON_ABDETEN (1 << 3) #define AMAZON_ASC_ABCON_ABDETEN (1 << 3)
#define AMAZON_ASC_ABCON_ABSTEN (1 << 2) #define AMAZON_ASC_ABCON_ABSTEN (1 << 2)
#define AMAZON_ASC_ABCON_AUREN (1 << 1) #define AMAZON_ASC_ABCON_AUREN (1 << 1)
#define AMAZON_ASC_ABCON_ABEN (1 << 0) #define AMAZON_ASC_ABCON_ABEN (1 << 0)
/***Receive FIFO Control Register***/ /***Receive FIFO Control Register***/
#define AMAZON_ASC_RXFCON ((volatile u32*)(AMAZON_ASC+ 0x0040)) #define AMAZON_ASC_RXFCON (AMAZON_ASC+ 0x0040)
#define AMAZON_ASC_RXFCON_RXFITL(value) (((( 1 << 6) - 1) & (value)) << 8) #define AMAZON_ASC_RXFCON_RXFITL(value) (((( 1 << 6) - 1) & (value)) << 8)
#define AMAZON_ASC_RXFCON_RXTMEN (1 << 2) #define AMAZON_ASC_RXFCON_RXTMEN (1 << 2)
#define AMAZON_ASC_RXFCON_RXFFLU (1 << 1) #define AMAZON_ASC_RXFCON_RXFFLU (1 << 1)
#define AMAZON_ASC_RXFCON_RXFEN (1 << 0) #define AMAZON_ASC_RXFCON_RXFEN (1 << 0)
/***Transmit FIFO Control Register***/ /***Transmit FIFO Control Register***/
#define AMAZON_ASC_TXFCON ((volatile u32*)(AMAZON_ASC+ 0x0044)) #define AMAZON_ASC_TXFCON (AMAZON_ASC+ 0x0044)
#define AMAZON_ASC_TXFCON_TXFITL(value) (((( 1 << 6) - 1) & (value)) << 8) #define AMAZON_ASC_TXFCON_TXFITL(value) (((( 1 << 6) - 1) & (value)) << 8)
#define AMAZON_ASC_TXFCON_TXTMEN (1 << 2) #define AMAZON_ASC_TXFCON_TXTMEN (1 << 2)
#define AMAZON_ASC_TXFCON_TXFFLU (1 << 1) #define AMAZON_ASC_TXFCON_TXFFLU (1 << 1)
#define AMAZON_ASC_TXFCON_TXFEN (1 << 0) #define AMAZON_ASC_TXFCON_TXFEN (1 << 0)
/***FIFO Status Register***/ /***FIFO Status Register***/
#define AMAZON_ASC_FSTAT ((volatile u32*)(AMAZON_ASC+ 0x0048)) #define AMAZON_ASC_FSTAT (AMAZON_ASC+ 0x0048)
#define AMAZON_ASC_FSTAT_TXFFL(value) (((( 1 << 6) - 1) & (value)) << 8) #define AMAZON_ASC_FSTAT_TXFFL(value) (((( 1 << 6) - 1) & (value)) << 8)
#define AMAZON_ASC_FSTAT_RXFFL(value) (((( 1 << 6) - 1) & (value)) << 0) #define AMAZON_ASC_FSTAT_RXFFL(value) (((( 1 << 6) - 1) & (value)) << 0)
/***ASC Write HW Modified Autobaud Control Register***/ /***ASC Write HW Modified Autobaud Control Register***/
#define AMAZON_ASC_WHBABCON ((volatile u32*)(AMAZON_ASC+ 0x0054)) #define AMAZON_ASC_WHBABCON (AMAZON_ASC+ 0x0054)
#define AMAZON_ASC_WHBABCON_SETABEN (1 << 1) #define AMAZON_ASC_WHBABCON_SETABEN (1 << 1)
#define AMAZON_ASC_WHBABCON_CLRABEN (1 << 0) #define AMAZON_ASC_WHBABCON_CLRABEN (1 << 0)
/***ASC Autobaud Status Register***/ /***ASC Autobaud Status Register***/
#define AMAZON_ASC_ABSTAT ((volatile u32*)(AMAZON_ASC+ 0x0034)) #define AMAZON_ASC_ABSTAT (AMAZON_ASC+ 0x0034)
#define AMAZON_ASC_ABSTAT_DETWAIT (1 << 4) #define AMAZON_ASC_ABSTAT_DETWAIT (1 << 4)
#define AMAZON_ASC_ABSTAT_SCCDET (1 << 3) #define AMAZON_ASC_ABSTAT_SCCDET (1 << 3)
#define AMAZON_ASC_ABSTAT_SCSDET (1 << 2) #define AMAZON_ASC_ABSTAT_SCSDET (1 << 2)
#define AMAZON_ASC_ABSTAT_FCCDET (1 << 1) #define AMAZON_ASC_ABSTAT_FCCDET (1 << 1)
#define AMAZON_ASC_ABSTAT_FCSDET (1 << 0) #define AMAZON_ASC_ABSTAT_FCSDET (1 << 0)
/***ASC Write HW Modified Autobaud Status Register***/ /***ASC Write HW Modified Autobaud Status Register***/
#define AMAZON_ASC_WHBABSTAT ((volatile u32*)(AMAZON_ASC+ 0x0058)) #define AMAZON_ASC_WHBABSTAT (AMAZON_ASC+ 0x0058)
#define AMAZON_ASC_WHBABSTAT_SETDETWAIT (1 << 9) #define AMAZON_ASC_WHBABSTAT_SETDETWAIT (1 << 9)
#define AMAZON_ASC_WHBABSTAT_CLRDETWAIT (1 << 8) #define AMAZON_ASC_WHBABSTAT_CLRDETWAIT (1 << 8)
#define AMAZON_ASC_WHBABSTAT_SETSCCDET (1 << 7) #define AMAZON_ASC_WHBABSTAT_SETSCCDET (1 << 7)
#define AMAZON_ASC_WHBABSTAT_CLRSCCDET (1 << 6) #define AMAZON_ASC_WHBABSTAT_CLRSCCDET (1 << 6)
#define AMAZON_ASC_WHBABSTAT_SETSCSDET (1 << 5) #define AMAZON_ASC_WHBABSTAT_SETSCSDET (1 << 5)
#define AMAZON_ASC_WHBABSTAT_CLRSCSDET (1 << 4) #define AMAZON_ASC_WHBABSTAT_CLRSCSDET (1 << 4)
#define AMAZON_ASC_WHBABSTAT_SETFCCDET (1 << 3) #define AMAZON_ASC_WHBABSTAT_SETFCCDET (1 << 3)
#define AMAZON_ASC_WHBABSTAT_CLRFCCDET (1 << 2) #define AMAZON_ASC_WHBABSTAT_CLRFCCDET (1 << 2)
#define AMAZON_ASC_WHBABSTAT_SETFCSDET (1 << 1) #define AMAZON_ASC_WHBABSTAT_SETFCSDET (1 << 1)
#define AMAZON_ASC_WHBABSTAT_CLRFCSDET (1 << 0) #define AMAZON_ASC_WHBABSTAT_CLRFCSDET (1 << 0)
/***ASC Clock Control Register***/ /***ASC Clock Control Register***/
#define AMAZON_ASC_CLC ((volatile u32*)(AMAZON_ASC+ 0x0000)) #define AMAZON_ASC_CLC (AMAZON_ASC+ 0x0000)
#define AMAZON_ASC_CLC_RMC(value) (((( 1 << 8) - 1) & (value)) << 8) #define AMAZON_ASC_CLC_RMC(value) (((( 1 << 8) - 1) & (value)) << 8)
#define AMAZON_ASC_CLC_DISS (1 << 1) #define AMAZON_ASC_CLC_DISS (1 << 1)
#define AMAZON_ASC_CLC_DISR (1 << 0) #define AMAZON_ASC_CLC_DISR (1 << 0)
/***ASC IRNCR0 **/ /***ASC IRNCR0 **/
#define AMAZON_ASC_IRNCR0 ((volatile u32*)(AMAZON_ASC+ 0x00FC)) #define AMAZON_ASC_IRNCR0 (AMAZON_ASC+ 0x00FC)
/***ASC IRNCR1 **/ /***ASC IRNCR1 **/
#define AMAZON_ASC_IRNCR1 ((volatile u32*)(AMAZON_ASC+ 0x00F8)) #define AMAZON_ASC_IRNCR1 (AMAZON_ASC+ 0x00F8)
#define ASC_IRNCR_TIR 0x1 #define ASC_IRNCR_TIR 0x1
#define ASC_IRNCR_RIR 0x2 #define ASC_IRNCR_RIR 0x2
#define ASC_IRNCR_EIR 0x4 #define ASC_IRNCR_EIR 0x4