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-rw-r--r--arch/mn10300/kernel/mn10300-serial.c210
1 files changed, 181 insertions, 29 deletions
diff --git a/arch/mn10300/kernel/mn10300-serial.c b/arch/mn10300/kernel/mn10300-serial.c
index db509dd80565..996384dba45d 100644
--- a/arch/mn10300/kernel/mn10300-serial.c
+++ b/arch/mn10300/kernel/mn10300-serial.c
@@ -44,6 +44,11 @@ static const char serial_revdate[] = "2007-11-06";
#include <unit/timex.h>
#include "mn10300-serial.h"
+#ifdef CONFIG_SMP
+#undef GxICR
+#define GxICR(X) CROSS_GxICR(X, 0)
+#endif /* CONFIG_SMP */
+
#define kenter(FMT, ...) \
printk(KERN_DEBUG "-->%s(" FMT ")\n", __func__, ##__VA_ARGS__)
#define _enter(FMT, ...) \
@@ -57,6 +62,11 @@ static const char serial_revdate[] = "2007-11-06";
#define _proto(FMT, ...) \
no_printk(KERN_DEBUG "### MNSERIAL " FMT " ###\n", ##__VA_ARGS__)
+#ifndef CODMSB
+/* c_cflag bit meaning */
+#define CODMSB 004000000000 /* change Transfer bit-order */
+#endif
+
#define NR_UARTS 3
#ifdef CONFIG_MN10300_TTYSM_CONSOLE
@@ -152,26 +162,35 @@ struct mn10300_serial_port mn10300_serial_port_sif0 = {
.name = "ttySM0",
._iobase = &SC0CTR,
._control = &SC0CTR,
- ._status = (volatile u8 *) &SC0STR,
+ ._status = (volatile u8 *)&SC0STR,
._intr = &SC0ICR,
._rxb = &SC0RXB,
._txb = &SC0TXB,
.rx_name = "ttySM0:Rx",
.tx_name = "ttySM0:Tx",
-#ifdef CONFIG_MN10300_TTYSM0_TIMER8
+#if defined(CONFIG_MN10300_TTYSM0_TIMER8)
.tm_name = "ttySM0:Timer8",
._tmxmd = &TM8MD,
._tmxbr = &TM8BR,
._tmicr = &TM8ICR,
.tm_irq = TM8IRQ,
.div_timer = MNSCx_DIV_TIMER_16BIT,
-#else /* CONFIG_MN10300_TTYSM0_TIMER2 */
+#elif defined(CONFIG_MN10300_TTYSM0_TIMER0)
+ .tm_name = "ttySM0:Timer0",
+ ._tmxmd = &TM0MD,
+ ._tmxbr = (volatile u16 *)&TM0BR,
+ ._tmicr = &TM0ICR,
+ .tm_irq = TM0IRQ,
+ .div_timer = MNSCx_DIV_TIMER_8BIT,
+#elif defined(CONFIG_MN10300_TTYSM0_TIMER2)
.tm_name = "ttySM0:Timer2",
._tmxmd = &TM2MD,
- ._tmxbr = (volatile u16 *) &TM2BR,
+ ._tmxbr = (volatile u16 *)&TM2BR,
._tmicr = &TM2ICR,
.tm_irq = TM2IRQ,
.div_timer = MNSCx_DIV_TIMER_8BIT,
+#else
+#error "Unknown config for ttySM0"
#endif
.rx_irq = SC0RXIRQ,
.tx_irq = SC0TXIRQ,
@@ -205,26 +224,35 @@ struct mn10300_serial_port mn10300_serial_port_sif1 = {
.name = "ttySM1",
._iobase = &SC1CTR,
._control = &SC1CTR,
- ._status = (volatile u8 *) &SC1STR,
+ ._status = (volatile u8 *)&SC1STR,
._intr = &SC1ICR,
._rxb = &SC1RXB,
._txb = &SC1TXB,
.rx_name = "ttySM1:Rx",
.tx_name = "ttySM1:Tx",
-#ifdef CONFIG_MN10300_TTYSM1_TIMER9
+#if defined(CONFIG_MN10300_TTYSM1_TIMER9)
.tm_name = "ttySM1:Timer9",
._tmxmd = &TM9MD,
._tmxbr = &TM9BR,
._tmicr = &TM9ICR,
.tm_irq = TM9IRQ,
.div_timer = MNSCx_DIV_TIMER_16BIT,
-#else /* CONFIG_MN10300_TTYSM1_TIMER3 */
+#elif defined(CONFIG_MN10300_TTYSM1_TIMER3)
.tm_name = "ttySM1:Timer3",
._tmxmd = &TM3MD,
- ._tmxbr = (volatile u16 *) &TM3BR,
+ ._tmxbr = (volatile u16 *)&TM3BR,
._tmicr = &TM3ICR,
.tm_irq = TM3IRQ,
.div_timer = MNSCx_DIV_TIMER_8BIT,
+#elif defined(CONFIG_MN10300_TTYSM1_TIMER12)
+ .tm_name = "ttySM1/Timer12",
+ ._tmxmd = &TM12MD,
+ ._tmxbr = &TM12BR,
+ ._tmicr = &TM12ICR,
+ .tm_irq = TM12IRQ,
+ .div_timer = MNSCx_DIV_TIMER_16BIT,
+#else
+#error "Unknown config for ttySM1"
#endif
.rx_irq = SC1RXIRQ,
.tx_irq = SC1TXIRQ,
@@ -260,20 +288,45 @@ struct mn10300_serial_port mn10300_serial_port_sif2 = {
.uart.lock =
__SPIN_LOCK_UNLOCKED(mn10300_serial_port_sif2.uart.lock),
.name = "ttySM2",
- .rx_name = "ttySM2:Rx",
- .tx_name = "ttySM2:Tx",
- .tm_name = "ttySM2:Timer10",
._iobase = &SC2CTR,
._control = &SC2CTR,
- ._status = &SC2STR,
+ ._status = (volatile u8 *)&SC2STR,
._intr = &SC2ICR,
._rxb = &SC2RXB,
._txb = &SC2TXB,
+ .rx_name = "ttySM2:Rx",
+ .tx_name = "ttySM2:Tx",
+#if defined(CONFIG_MN10300_TTYSM2_TIMER10)
+ .tm_name = "ttySM2/Timer10",
._tmxmd = &TM10MD,
._tmxbr = &TM10BR,
._tmicr = &TM10ICR,
.tm_irq = TM10IRQ,
.div_timer = MNSCx_DIV_TIMER_16BIT,
+#elif defined(CONFIG_MN10300_TTYSM2_TIMER9)
+ .tm_name = "ttySM2/Timer9",
+ ._tmxmd = &TM9MD,
+ ._tmxbr = &TM9BR,
+ ._tmicr = &TM9ICR,
+ .tm_irq = TM9IRQ,
+ .div_timer = MNSCx_DIV_TIMER_16BIT,
+#elif defined(CONFIG_MN10300_TTYSM2_TIMER1)
+ .tm_name = "ttySM2/Timer1",
+ ._tmxmd = &TM1MD,
+ ._tmxbr = (volatile u16 *)&TM1BR,
+ ._tmicr = &TM1ICR,
+ .tm_irq = TM1IRQ,
+ .div_timer = MNSCx_DIV_TIMER_8BIT,
+#elif defined(CONFIG_MN10300_TTYSM2_TIMER3)
+ .tm_name = "ttySM2/Timer3",
+ ._tmxmd = &TM3MD,
+ ._tmxbr = (volatile u16 *)&TM3BR,
+ ._tmicr = &TM3ICR,
+ .tm_irq = TM3IRQ,
+ .div_timer = MNSCx_DIV_TIMER_8BIT,
+#else
+#error "Unknown config for ttySM2"
+#endif
.rx_irq = SC2RXIRQ,
.tx_irq = SC2TXIRQ,
.rx_icr = &GxICR(SC2RXIRQ),
@@ -322,9 +375,13 @@ struct mn10300_serial_port *mn10300_serial_ports[NR_UARTS + 1] = {
*/
static void mn10300_serial_mask_ack(unsigned int irq)
{
+ unsigned long flags;
u16 tmp;
+
+ flags = arch_local_cli_save();
GxICR(irq) = GxICR_LEVEL_6;
tmp = GxICR(irq); /* flush write buffer */
+ arch_local_irq_restore(flags);
}
static void mn10300_serial_nop(unsigned int irq)
@@ -348,23 +405,36 @@ struct mn10300_serial_int mn10300_serial_int_tbl[NR_IRQS];
static void mn10300_serial_dis_tx_intr(struct mn10300_serial_port *port)
{
+ unsigned long flags;
u16 x;
- *port->tx_icr = GxICR_LEVEL_1 | GxICR_DETECT;
+
+ flags = arch_local_cli_save();
+ *port->tx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL);
x = *port->tx_icr;
+ arch_local_irq_restore(flags);
}
static void mn10300_serial_en_tx_intr(struct mn10300_serial_port *port)
{
+ unsigned long flags;
u16 x;
- *port->tx_icr = GxICR_LEVEL_1 | GxICR_ENABLE;
+
+ flags = arch_local_cli_save();
+ *port->tx_icr =
+ NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL) | GxICR_ENABLE;
x = *port->tx_icr;
+ arch_local_irq_restore(flags);
}
static void mn10300_serial_dis_rx_intr(struct mn10300_serial_port *port)
{
+ unsigned long flags;
u16 x;
- *port->rx_icr = GxICR_LEVEL_1 | GxICR_DETECT;
+
+ flags = arch_local_cli_save();
+ *port->rx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL);
x = *port->rx_icr;
+ arch_local_irq_restore(flags);
}
/*
@@ -650,7 +720,7 @@ static unsigned int mn10300_serial_tx_empty(struct uart_port *_port)
static void mn10300_serial_set_mctrl(struct uart_port *_port,
unsigned int mctrl)
{
- struct mn10300_serial_port *port =
+ struct mn10300_serial_port *port __attribute__ ((unused)) =
container_of(_port, struct mn10300_serial_port, uart);
_enter("%s,%x", port->name, mctrl);
@@ -706,6 +776,7 @@ static void mn10300_serial_start_tx(struct uart_port *_port)
UART_XMIT_SIZE));
/* kick the virtual DMA controller */
+ arch_local_cli();
x = *port->tx_icr;
x |= GxICR_ENABLE;
@@ -716,10 +787,14 @@ static void mn10300_serial_start_tx(struct uart_port *_port)
_debug("CTR=%04hx ICR=%02hx STR=%04x TMD=%02hx TBR=%04hx ICR=%04hx",
*port->_control, *port->_intr, *port->_status,
- *port->_tmxmd, *port->_tmxbr, *port->tx_icr);
+ *port->_tmxmd,
+ (port->div_timer == MNSCx_DIV_TIMER_8BIT) ?
+ *(volatile u8 *)port->_tmxbr : *port->_tmxbr,
+ *port->tx_icr);
*port->tx_icr = x;
x = *port->tx_icr;
+ arch_local_sti();
}
/*
@@ -842,8 +917,10 @@ static int mn10300_serial_startup(struct uart_port *_port)
pint->port = port;
pint->vdma = mn10300_serial_vdma_tx_handler;
- set_intr_level(port->rx_irq, GxICR_LEVEL_1);
- set_intr_level(port->tx_irq, GxICR_LEVEL_1);
+ set_intr_level(port->rx_irq,
+ NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL));
+ set_intr_level(port->tx_irq,
+ NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL));
set_irq_chip(port->tm_irq, &mn10300_serial_pic);
if (request_irq(port->rx_irq, mn10300_serial_interrupt,
@@ -876,6 +953,7 @@ error:
*/
static void mn10300_serial_shutdown(struct uart_port *_port)
{
+ u16 x;
struct mn10300_serial_port *port =
container_of(_port, struct mn10300_serial_port, uart);
@@ -897,8 +975,12 @@ static void mn10300_serial_shutdown(struct uart_port *_port)
free_irq(port->rx_irq, port);
free_irq(port->tx_irq, port);
- *port->rx_icr = GxICR_LEVEL_1;
- *port->tx_icr = GxICR_LEVEL_1;
+ arch_local_cli();
+ *port->rx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL);
+ x = *port->rx_icr;
+ *port->tx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL);
+ x = *port->tx_icr;
+ arch_local_sti();
}
/*
@@ -947,11 +1029,66 @@ static void mn10300_serial_change_speed(struct mn10300_serial_port *port,
/* Determine divisor based on baud rate */
battempt = 0;
- if (div_timer == MNSCx_DIV_TIMER_16BIT)
- scxctr |= SC0CTR_CK_TM8UFLOW_8; /* ( == SC1CTR_CK_TM9UFLOW_8
- * == SC2CTR_CK_TM10UFLOW) */
- else if (div_timer == MNSCx_DIV_TIMER_8BIT)
+ switch (port->uart.line) {
+#ifdef CONFIG_MN10300_TTYSM0
+ case 0: /* ttySM0 */
+#if defined(CONFIG_MN10300_TTYSM0_TIMER8)
+ scxctr |= SC0CTR_CK_TM8UFLOW_8;
+#elif defined(CONFIG_MN10300_TTYSM0_TIMER0)
+ scxctr |= SC0CTR_CK_TM0UFLOW_8;
+#elif defined(CONFIG_MN10300_TTYSM0_TIMER2)
scxctr |= SC0CTR_CK_TM2UFLOW_8;
+#else
+#error "Unknown config for ttySM0"
+#endif
+ break;
+#endif /* CONFIG_MN10300_TTYSM0 */
+
+#ifdef CONFIG_MN10300_TTYSM1
+ case 1: /* ttySM1 */
+#if defined(CONFIG_AM33_2) || defined(CONFIG_AM33_3)
+#if defined(CONFIG_MN10300_TTYSM1_TIMER9)
+ scxctr |= SC1CTR_CK_TM9UFLOW_8;
+#elif defined(CONFIG_MN10300_TTYSM1_TIMER3)
+ scxctr |= SC1CTR_CK_TM3UFLOW_8;
+#else
+#error "Unknown config for ttySM1"
+#endif
+#else /* CONFIG_AM33_2 || CONFIG_AM33_3 */
+#if defined(CONFIG_MN10300_TTYSM1_TIMER12)
+ scxctr |= SC1CTR_CK_TM12UFLOW_8;
+#else
+#error "Unknown config for ttySM1"
+#endif
+#endif /* CONFIG_AM33_2 || CONFIG_AM33_3 */
+ break;
+#endif /* CONFIG_MN10300_TTYSM1 */
+
+#ifdef CONFIG_MN10300_TTYSM2
+ case 2: /* ttySM2 */
+#if defined(CONFIG_AM33_2)
+#if defined(CONFIG_MN10300_TTYSM2_TIMER10)
+ scxctr |= SC2CTR_CK_TM10UFLOW;
+#else
+#error "Unknown config for ttySM2"
+#endif
+#else /* CONFIG_AM33_2 */
+#if defined(CONFIG_MN10300_TTYSM2_TIMER9)
+ scxctr |= SC2CTR_CK_TM9UFLOW_8;
+#elif defined(CONFIG_MN10300_TTYSM2_TIMER1)
+ scxctr |= SC2CTR_CK_TM1UFLOW_8;
+#elif defined(CONFIG_MN10300_TTYSM2_TIMER3)
+ scxctr |= SC2CTR_CK_TM3UFLOW_8;
+#else
+#error "Unknown config for ttySM2"
+#endif
+#endif /* CONFIG_AM33_2 */
+ break;
+#endif /* CONFIG_MN10300_TTYSM2 */
+
+ default:
+ break;
+ }
try_alternative:
baud = uart_get_baud_rate(&port->uart, new, old, 0,
@@ -1195,6 +1332,12 @@ static void mn10300_serial_set_termios(struct uart_port *_port,
ctr &= ~SC2CTR_TWE;
*port->_control = ctr;
}
+
+ /* change Transfer bit-order (LSB/MSB) */
+ if (new->c_cflag & CODMSB)
+ *port->_control |= SC01CTR_OD_MSBFIRST; /* MSB MODE */
+ else
+ *port->_control &= ~SC01CTR_OD_MSBFIRST; /* LSB MODE */
}
/*
@@ -1302,11 +1445,16 @@ static int __init mn10300_serial_init(void)
printk(KERN_INFO "%s version %s (%s)\n",
serial_name, serial_version, serial_revdate);
-#ifdef CONFIG_MN10300_TTYSM2
- SC2TIM = 8; /* make the baud base of timer 2 IOCLK/8 */
+#if defined(CONFIG_MN10300_TTYSM2) && defined(CONFIG_AM33_2)
+ {
+ int tmp;
+ SC2TIM = 8; /* make the baud base of timer 2 IOCLK/8 */
+ tmp = SC2TIM;
+ }
#endif
- set_intr_stub(EXCEP_IRQ_LEVEL1, mn10300_serial_vdma_interrupt);
+ set_intr_stub(NUM2EXCEP_IRQ_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL),
+ mn10300_serial_vdma_interrupt);
ret = uart_register_driver(&mn10300_serial_driver);
if (!ret) {
@@ -1366,9 +1514,11 @@ static void mn10300_serial_console_write(struct console *co,
port = mn10300_serial_ports[co->index];
/* firstly hijack the serial port from the "virtual DMA" controller */
+ arch_local_cli();
txicr = *port->tx_icr;
- *port->tx_icr = GxICR_LEVEL_1;
+ *port->tx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL);
tmp = *port->tx_icr;
+ arch_local_sti();
/* the transmitter may be disabled */
scxctr = *port->_control;
@@ -1422,8 +1572,10 @@ static void mn10300_serial_console_write(struct console *co,
if (!(scxctr & SC01CTR_TXE))
*port->_control = scxctr;
+ arch_local_cli();
*port->tx_icr = txicr;
tmp = *port->tx_icr;
+ arch_local_sti();
}
/*
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.