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path: root/drivers/char/mxser.c
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Diffstat (limited to 'drivers/char/mxser.c')
-rw-r--r--drivers/char/mxser.c229
1 files changed, 214 insertions, 15 deletions
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 97b1291..4b81a85 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -307,6 +307,200 @@ static unsigned char mxser_msr[MXSER_PORTS + 1];
static struct mxser_mon_ext mon_data_ext;
static int mxser_set_baud_method[MXSER_PORTS + 1];
+static void mxser_enable_must_enchance_mode(unsigned long baseio)
+{
+ u8 oldlcr;
+ u8 efr;
+
+ oldlcr = inb(baseio + UART_LCR);
+ outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR);
+
+ efr = inb(baseio + MOXA_MUST_EFR_REGISTER);
+ efr |= MOXA_MUST_EFR_EFRB_ENABLE;
+
+ outb(efr, baseio + MOXA_MUST_EFR_REGISTER);
+ outb(oldlcr, baseio + UART_LCR);
+}
+
+static void mxser_disable_must_enchance_mode(unsigned long baseio)
+{
+ u8 oldlcr;
+ u8 efr;
+
+ oldlcr = inb(baseio + UART_LCR);
+ outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR);
+
+ efr = inb(baseio + MOXA_MUST_EFR_REGISTER);
+ efr &= ~MOXA_MUST_EFR_EFRB_ENABLE;
+
+ outb(efr, baseio + MOXA_MUST_EFR_REGISTER);
+ outb(oldlcr, baseio + UART_LCR);
+}
+
+static void mxser_set_must_xon1_value(unsigned long baseio, u8 value)
+{
+ u8 oldlcr;
+ u8 efr;
+
+ oldlcr = inb(baseio + UART_LCR);
+ outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR);
+
+ efr = inb(baseio + MOXA_MUST_EFR_REGISTER);
+ efr &= ~MOXA_MUST_EFR_BANK_MASK;
+ efr |= MOXA_MUST_EFR_BANK0;
+
+ outb(efr, baseio + MOXA_MUST_EFR_REGISTER);
+ outb(value, baseio + MOXA_MUST_XON1_REGISTER);
+ outb(oldlcr, baseio + UART_LCR);
+}
+
+static void mxser_set_must_xoff1_value(unsigned long baseio, u8 value)
+{
+ u8 oldlcr;
+ u8 efr;
+
+ oldlcr = inb(baseio + UART_LCR);
+ outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR);
+
+ efr = inb(baseio + MOXA_MUST_EFR_REGISTER);
+ efr &= ~MOXA_MUST_EFR_BANK_MASK;
+ efr |= MOXA_MUST_EFR_BANK0;
+
+ outb(efr, baseio + MOXA_MUST_EFR_REGISTER);
+ outb(value, baseio + MOXA_MUST_XOFF1_REGISTER);
+ outb(oldlcr, baseio + UART_LCR);
+}
+
+static void mxser_set_must_fifo_value(struct mxser_port *info)
+{
+ u8 oldlcr;
+ u8 efr;
+
+ oldlcr = inb(info->ioaddr + UART_LCR);
+ outb(MOXA_MUST_ENTER_ENCHANCE, info->ioaddr + UART_LCR);
+
+ efr = inb(info->ioaddr + MOXA_MUST_EFR_REGISTER);
+ efr &= ~MOXA_MUST_EFR_BANK_MASK;
+ efr |= MOXA_MUST_EFR_BANK1;
+
+ outb(efr, info->ioaddr + MOXA_MUST_EFR_REGISTER);
+ outb((u8)info->rx_high_water, info->ioaddr + MOXA_MUST_RBRTH_REGISTER);
+ outb((u8)info->rx_trigger, info->ioaddr + MOXA_MUST_RBRTI_REGISTER);
+ outb((u8)info->rx_low_water, info->ioaddr + MOXA_MUST_RBRTL_REGISTER);
+ outb(oldlcr, info->ioaddr + UART_LCR);
+}
+
+static void mxser_set_must_enum_value(unsigned long baseio, u8 value)
+{
+ u8 oldlcr;
+ u8 efr;
+
+ oldlcr = inb(baseio + UART_LCR);
+ outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR);
+
+ efr = inb(baseio + MOXA_MUST_EFR_REGISTER);
+ efr &= ~MOXA_MUST_EFR_BANK_MASK;
+ efr |= MOXA_MUST_EFR_BANK2;
+
+ outb(efr, baseio + MOXA_MUST_EFR_REGISTER);
+ outb(value, baseio + MOXA_MUST_ENUM_REGISTER);
+ outb(oldlcr, baseio + UART_LCR);
+}
+
+static void mxser_get_must_hardware_id(unsigned long baseio, u8 *pId)
+{
+ u8 oldlcr;
+ u8 efr;
+
+ oldlcr = inb(baseio + UART_LCR);
+ outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR);
+
+ efr = inb(baseio + MOXA_MUST_EFR_REGISTER);
+ efr &= ~MOXA_MUST_EFR_BANK_MASK;
+ efr |= MOXA_MUST_EFR_BANK2;
+
+ outb(efr, baseio + MOXA_MUST_EFR_REGISTER);
+ *pId = inb(baseio + MOXA_MUST_HWID_REGISTER);
+ outb(oldlcr, baseio + UART_LCR);
+}
+
+static void SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(unsigned long baseio)
+{
+ u8 oldlcr;
+ u8 efr;
+
+ oldlcr = inb(baseio + UART_LCR);
+ outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR);
+
+ efr = inb(baseio + MOXA_MUST_EFR_REGISTER);
+ efr &= ~MOXA_MUST_EFR_SF_MASK;
+
+ outb(efr, baseio + MOXA_MUST_EFR_REGISTER);
+ outb(oldlcr, baseio + UART_LCR);
+}
+
+static void mxser_enable_must_tx_software_flow_control(unsigned long baseio)
+{
+ u8 oldlcr;
+ u8 efr;
+
+ oldlcr = inb(baseio + UART_LCR);
+ outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR);
+
+ efr = inb(baseio + MOXA_MUST_EFR_REGISTER);
+ efr &= ~MOXA_MUST_EFR_SF_TX_MASK;
+ efr |= MOXA_MUST_EFR_SF_TX1;
+
+ outb(efr, baseio + MOXA_MUST_EFR_REGISTER);
+ outb(oldlcr, baseio + UART_LCR);
+}
+
+static void mxser_disable_must_tx_software_flow_control(unsigned long baseio)
+{
+ u8 oldlcr;
+ u8 efr;
+
+ oldlcr = inb(baseio + UART_LCR);
+ outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR);
+
+ efr = inb(baseio + MOXA_MUST_EFR_REGISTER);
+ efr &= ~MOXA_MUST_EFR_SF_TX_MASK;
+
+ outb(efr, baseio + MOXA_MUST_EFR_REGISTER);
+ outb(oldlcr, baseio + UART_LCR);
+}
+
+static void mxser_enable_must_rx_software_flow_control(unsigned long baseio)
+{
+ u8 oldlcr;
+ u8 efr;
+
+ oldlcr = inb(baseio + UART_LCR);
+ outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR);
+
+ efr = inb(baseio + MOXA_MUST_EFR_REGISTER);
+ efr &= ~MOXA_MUST_EFR_SF_RX_MASK;
+ efr |= MOXA_MUST_EFR_SF_RX1;
+
+ outb(efr, baseio + MOXA_MUST_EFR_REGISTER);
+ outb(oldlcr, baseio + UART_LCR);
+}
+
+static void mxser_disable_must_rx_software_flow_control(unsigned long baseio)
+{
+ u8 oldlcr;
+ u8 efr;
+
+ oldlcr = inb(baseio + UART_LCR);
+ outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR);
+
+ efr = inb(baseio + MOXA_MUST_EFR_REGISTER);
+ efr &= ~MOXA_MUST_EFR_SF_RX_MASK;
+
+ outb(efr, baseio + MOXA_MUST_EFR_REGISTER);
+ outb(oldlcr, baseio + UART_LCR);
+}
+
#ifdef CONFIG_PCI
static int __devinit CheckIsMoxaMust(unsigned long io)
{
@@ -314,16 +508,16 @@ static int __devinit CheckIsMoxaMust(unsigned long io)
int i;
outb(0, io + UART_LCR);
- DISABLE_MOXA_MUST_ENCHANCE_MODE(io);
+ mxser_disable_must_enchance_mode(io);
oldmcr = inb(io + UART_MCR);
outb(0, io + UART_MCR);
- SET_MOXA_MUST_XON1_VALUE(io, 0x11);
+ mxser_set_must_xon1_value(io, 0x11);
if ((hwid = inb(io + UART_MCR)) != 0) {
outb(oldmcr, io + UART_MCR);
return MOXA_OTHER_UART;
}
- GET_MOXA_MUST_HARDWARE_ID(io, &hwid);
+ mxser_get_must_hardware_id(io, &hwid);
for (i = 1; i < UART_INFO_NUM; i++) { /* 0 = OTHER_UART */
if (hwid == Gpci_uart_info[i].type)
return (int)hwid;
@@ -494,10 +688,10 @@ static int mxser_set_baud(struct mxser_port *info, long newspd)
} else
quot /= newspd;
- SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, quot);
+ mxser_set_must_enum_value(info->ioaddr, quot);
} else
#endif
- SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, 0);
+ mxser_set_must_enum_value(info->ioaddr, 0);
return 0;
}
@@ -553,14 +747,14 @@ static int mxser_change_speed(struct mxser_port *info,
if (info->board->chip_flag) {
fcr = UART_FCR_ENABLE_FIFO;
fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
- SET_MOXA_MUST_FIFO_VALUE(info);
+ mxser_set_must_fifo_value(info);
} else
fcr = 0;
} else {
fcr = UART_FCR_ENABLE_FIFO;
if (info->board->chip_flag) {
fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
- SET_MOXA_MUST_FIFO_VALUE(info);
+ mxser_set_must_fifo_value(info);
} else {
switch (info->rx_trigger) {
case 1:
@@ -657,17 +851,21 @@ static int mxser_change_speed(struct mxser_port *info,
}
}
if (info->board->chip_flag) {
- SET_MOXA_MUST_XON1_VALUE(info->ioaddr, START_CHAR(info->tty));
- SET_MOXA_MUST_XOFF1_VALUE(info->ioaddr, STOP_CHAR(info->tty));
+ mxser_set_must_xon1_value(info->ioaddr, START_CHAR(info->tty));
+ mxser_set_must_xoff1_value(info->ioaddr, STOP_CHAR(info->tty));
if (I_IXON(info->tty)) {
- ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
+ mxser_enable_must_rx_software_flow_control(
+ info->ioaddr);
} else {
- DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
+ mxser_disable_must_rx_software_flow_control(
+ info->ioaddr);
}
if (I_IXOFF(info->tty)) {
- ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
+ mxser_enable_must_tx_software_flow_control(
+ info->ioaddr);
} else {
- DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
+ mxser_disable_must_tx_software_flow_control(
+ info->ioaddr);
}
}
@@ -1938,7 +2136,8 @@ static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termi
if (info->board->chip_flag) {
spin_lock_irqsave(&info->slock, flags);
- DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
+ mxser_disable_must_rx_software_flow_control(
+ info->ioaddr);
spin_unlock_irqrestore(&info->slock, flags);
}
@@ -2357,7 +2556,7 @@ static int __devinit mxser_initbrd(struct mxser_board *brd,
/* Enhance mode enabled here */
if (brd->chip_flag != MOXA_OTHER_UART)
- ENABLE_MOXA_MUST_ENCHANCE_MODE(info->ioaddr);
+ mxser_enable_must_enchance_mode(info->ioaddr);
info->flags = ASYNC_SHARE_IRQ;
info->type = brd->uart_type;
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