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path: root/drivers/tty/serial/8250/8250.c
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Diffstat (limited to 'drivers/tty/serial/8250/8250.c')
-rw-r--r--drivers/tty/serial/8250/8250.c744
1 files changed, 367 insertions, 377 deletions
diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c
index 9b7336fcfbb..5b149b466ec 100644
--- a/drivers/tty/serial/8250/8250.c
+++ b/drivers/tty/serial/8250/8250.c
@@ -38,16 +38,15 @@
#include <linux/nmi.h>
#include <linux/mutex.h>
#include <linux/slab.h>
+#ifdef CONFIG_SPARC
+#include <linux/sunserialcore.h>
+#endif
#include <asm/io.h>
#include <asm/irq.h>
#include "8250.h"
-#ifdef CONFIG_SPARC
-#include "../suncore.h"
-#endif
-
/*
* Configuration:
* share_irqs - whether we pass IRQF_SHARED to request_irq(). This option
@@ -86,13 +85,6 @@ static unsigned int skip_txen_test; /* force skip of txen test at init time */
#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
-/*
- * We default to IRQ0 for the "no irq" hack. Some
- * machine types want others as well - they're free
- * to redefine this in their header file.
- */
-#define is_real_interrupt(irq) ((irq) != 0)
-
#ifdef CONFIG_SERIAL_8250_DETECT_IRQ
#define CONFIG_SERIAL_DETECT_IRQ 1
#endif
@@ -475,9 +467,8 @@ static void set_io_from_upio(struct uart_port *p)
}
static void
-serial_out_sync(struct uart_8250_port *up, int offset, int value)
+serial_port_out_sync(struct uart_port *p, int offset, int value)
{
- struct uart_port *p = &up->port;
switch (p->iotype) {
case UPIO_MEM:
case UPIO_MEM32:
@@ -490,30 +481,17 @@ serial_out_sync(struct uart_8250_port *up, int offset, int value)
}
}
-#define serial_in(up, offset) \
- (up->port.serial_in(&(up)->port, (offset)))
-#define serial_out(up, offset, value) \
- (up->port.serial_out(&(up)->port, (offset), (value)))
-/*
- * We used to support using pause I/O for certain machines. We
- * haven't supported this for a while, but just in case it's badly
- * needed for certain old 386 machines, I've left these #define's
- * in....
- */
-#define serial_inp(up, offset) serial_in(up, offset)
-#define serial_outp(up, offset, value) serial_out(up, offset, value)
-
/* Uart divisor latch read */
static inline int _serial_dl_read(struct uart_8250_port *up)
{
- return serial_inp(up, UART_DLL) | serial_inp(up, UART_DLM) << 8;
+ return serial_in(up, UART_DLL) | serial_in(up, UART_DLM) << 8;
}
/* Uart divisor latch write */
static inline void _serial_dl_write(struct uart_8250_port *up, int value)
{
- serial_outp(up, UART_DLL, value & 0xff);
- serial_outp(up, UART_DLM, value >> 8 & 0xff);
+ serial_out(up, UART_DLL, value & 0xff);
+ serial_out(up, UART_DLM, value >> 8 & 0xff);
}
#if defined(CONFIG_MIPS_ALCHEMY)
@@ -583,10 +561,10 @@ static unsigned int serial_icr_read(struct uart_8250_port *up, int offset)
static void serial8250_clear_fifos(struct uart_8250_port *p)
{
if (p->capabilities & UART_CAP_FIFO) {
- serial_outp(p, UART_FCR, UART_FCR_ENABLE_FIFO);
- serial_outp(p, UART_FCR, UART_FCR_ENABLE_FIFO |
+ serial_out(p, UART_FCR, UART_FCR_ENABLE_FIFO);
+ serial_out(p, UART_FCR, UART_FCR_ENABLE_FIFO |
UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
- serial_outp(p, UART_FCR, 0);
+ serial_out(p, UART_FCR, 0);
}
}
@@ -599,15 +577,15 @@ static void serial8250_set_sleep(struct uart_8250_port *p, int sleep)
{
if (p->capabilities & UART_CAP_SLEEP) {
if (p->capabilities & UART_CAP_EFR) {
- serial_outp(p, UART_LCR, UART_LCR_CONF_MODE_B);
- serial_outp(p, UART_EFR, UART_EFR_ECB);
- serial_outp(p, UART_LCR, 0);
+ serial_out(p, UART_LCR, UART_LCR_CONF_MODE_B);
+ serial_out(p, UART_EFR, UART_EFR_ECB);
+ serial_out(p, UART_LCR, 0);
}
- serial_outp(p, UART_IER, sleep ? UART_IERX_SLEEP : 0);
+ serial_out(p, UART_IER, sleep ? UART_IERX_SLEEP : 0);
if (p->capabilities & UART_CAP_EFR) {
- serial_outp(p, UART_LCR, UART_LCR_CONF_MODE_B);
- serial_outp(p, UART_EFR, 0);
- serial_outp(p, UART_LCR, 0);
+ serial_out(p, UART_LCR, UART_LCR_CONF_MODE_B);
+ serial_out(p, UART_EFR, 0);
+ serial_out(p, UART_LCR, 0);
}
}
}
@@ -622,12 +600,12 @@ static int __enable_rsa(struct uart_8250_port *up)
unsigned char mode;
int result;
- mode = serial_inp(up, UART_RSA_MSR);
+ mode = serial_in(up, UART_RSA_MSR);
result = mode & UART_RSA_MSR_FIFO;
if (!result) {
- serial_outp(up, UART_RSA_MSR, mode | UART_RSA_MSR_FIFO);
- mode = serial_inp(up, UART_RSA_MSR);
+ serial_out(up, UART_RSA_MSR, mode | UART_RSA_MSR_FIFO);
+ mode = serial_in(up, UART_RSA_MSR);
result = mode & UART_RSA_MSR_FIFO;
}
@@ -646,7 +624,7 @@ static void enable_rsa(struct uart_8250_port *up)
spin_unlock_irq(&up->port.lock);
}
if (up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16)
- serial_outp(up, UART_RSA_FRR, 0);
+ serial_out(up, UART_RSA_FRR, 0);
}
}
@@ -665,12 +643,12 @@ static void disable_rsa(struct uart_8250_port *up)
up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) {
spin_lock_irq(&up->port.lock);
- mode = serial_inp(up, UART_RSA_MSR);
+ mode = serial_in(up, UART_RSA_MSR);
result = !(mode & UART_RSA_MSR_FIFO);
if (!result) {
- serial_outp(up, UART_RSA_MSR, mode & ~UART_RSA_MSR_FIFO);
- mode = serial_inp(up, UART_RSA_MSR);
+ serial_out(up, UART_RSA_MSR, mode & ~UART_RSA_MSR_FIFO);
+ mode = serial_in(up, UART_RSA_MSR);
result = !(mode & UART_RSA_MSR_FIFO);
}
@@ -691,28 +669,28 @@ static int size_fifo(struct uart_8250_port *up)
unsigned short old_dl;
int count;
- old_lcr = serial_inp(up, UART_LCR);
- serial_outp(up, UART_LCR, 0);
- old_fcr = serial_inp(up, UART_FCR);
- old_mcr = serial_inp(up, UART_MCR);
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO |
+ old_lcr = serial_in(up, UART_LCR);
+ serial_out(up, UART_LCR, 0);
+ old_fcr = serial_in(up, UART_FCR);
+ old_mcr = serial_in(up, UART_MCR);
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO |
UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
- serial_outp(up, UART_MCR, UART_MCR_LOOP);
- serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_A);
+ serial_out(up, UART_MCR, UART_MCR_LOOP);
+ serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
old_dl = serial_dl_read(up);
serial_dl_write(up, 0x0001);
- serial_outp(up, UART_LCR, 0x03);
+ serial_out(up, UART_LCR, 0x03);
for (count = 0; count < 256; count++)
- serial_outp(up, UART_TX, count);
+ serial_out(up, UART_TX, count);
mdelay(20);/* FIXME - schedule_timeout */
- for (count = 0; (serial_inp(up, UART_LSR) & UART_LSR_DR) &&
+ for (count = 0; (serial_in(up, UART_LSR) & UART_LSR_DR) &&
(count < 256); count++)
- serial_inp(up, UART_RX);
- serial_outp(up, UART_FCR, old_fcr);
- serial_outp(up, UART_MCR, old_mcr);
- serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_A);
+ serial_in(up, UART_RX);
+ serial_out(up, UART_FCR, old_fcr);
+ serial_out(up, UART_MCR, old_mcr);
+ serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
serial_dl_write(up, old_dl);
- serial_outp(up, UART_LCR, old_lcr);
+ serial_out(up, UART_LCR, old_lcr);
return count;
}
@@ -727,20 +705,20 @@ static unsigned int autoconfig_read_divisor_id(struct uart_8250_port *p)
unsigned char old_dll, old_dlm, old_lcr;
unsigned int id;
- old_lcr = serial_inp(p, UART_LCR);
- serial_outp(p, UART_LCR, UART_LCR_CONF_MODE_A);
+ old_lcr = serial_in(p, UART_LCR);
+ serial_out(p, UART_LCR, UART_LCR_CONF_MODE_A);
- old_dll = serial_inp(p, UART_DLL);
- old_dlm = serial_inp(p, UART_DLM);
+ old_dll = serial_in(p, UART_DLL);
+ old_dlm = serial_in(p, UART_DLM);
- serial_outp(p, UART_DLL, 0);
- serial_outp(p, UART_DLM, 0);
+ serial_out(p, UART_DLL, 0);
+ serial_out(p, UART_DLM, 0);
- id = serial_inp(p, UART_DLL) | serial_inp(p, UART_DLM) << 8;
+ id = serial_in(p, UART_DLL) | serial_in(p, UART_DLM) << 8;
- serial_outp(p, UART_DLL, old_dll);
- serial_outp(p, UART_DLM, old_dlm);
- serial_outp(p, UART_LCR, old_lcr);
+ serial_out(p, UART_DLL, old_dll);
+ serial_out(p, UART_DLM, old_dlm);
+ serial_out(p, UART_LCR, old_lcr);
return id;
}
@@ -850,11 +828,11 @@ static void autoconfig_8250(struct uart_8250_port *up)
up->port.type = PORT_8250;
scratch = serial_in(up, UART_SCR);
- serial_outp(up, UART_SCR, 0xa5);
+ serial_out(up, UART_SCR, 0xa5);
status1 = serial_in(up, UART_SCR);
- serial_outp(up, UART_SCR, 0x5a);
+ serial_out(up, UART_SCR, 0x5a);
status2 = serial_in(up, UART_SCR);
- serial_outp(up, UART_SCR, scratch);
+ serial_out(up, UART_SCR, scratch);
if (status1 == 0xa5 && status2 == 0x5a)
up->port.type = PORT_16450;
@@ -885,7 +863,7 @@ static inline int ns16550a_goto_highspeed(struct uart_8250_port *up)
} else {
status &= ~0xB0; /* Disable LOCK, mask out PRESL[01] */
status |= 0x10; /* 1.625 divisor for baud_base --> 921600 */
- serial_outp(up, 0x04, status);
+ serial_out(up, 0x04, status);
}
return 1;
}
@@ -908,9 +886,9 @@ static void autoconfig_16550a(struct uart_8250_port *up)
* Check for presence of the EFR when DLAB is set.
* Only ST16C650V1 UARTs pass this test.
*/
- serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_A);
+ serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
if (serial_in(up, UART_EFR) == 0) {
- serial_outp(up, UART_EFR, 0xA8);
+ serial_out(up, UART_EFR, 0xA8);
if (serial_in(up, UART_EFR) != 0) {
DEBUG_AUTOCONF("EFRv1 ");
up->port.type = PORT_16650;
@@ -918,7 +896,7 @@ static void autoconfig_16550a(struct uart_8250_port *up)
} else {
DEBUG_AUTOCONF("Motorola 8xxx DUART ");
}
- serial_outp(up, UART_EFR, 0);
+ serial_out(up, UART_EFR, 0);
return;
}
@@ -926,7 +904,7 @@ static void autoconfig_16550a(struct uart_8250_port *up)
* Maybe it requires 0xbf to be written to the LCR.
* (other ST16C650V2 UARTs, TI16C752A, etc)
*/
- serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
+ serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
if (serial_in(up, UART_EFR) == 0 && !broken_efr(up)) {
DEBUG_AUTOCONF("EFRv2 ");
autoconfig_has_efr(up);
@@ -940,23 +918,23 @@ static void autoconfig_16550a(struct uart_8250_port *up)
* switch back to bank 2, read it from EXCR1 again and check
* it's changed. If so, set baud_base in EXCR2 to 921600. -- dwmw2
*/
- serial_outp(up, UART_LCR, 0);
+ serial_out(up, UART_LCR, 0);
status1 = serial_in(up, UART_MCR);
- serial_outp(up, UART_LCR, 0xE0);
+ serial_out(up, UART_LCR, 0xE0);
status2 = serial_in(up, 0x02); /* EXCR1 */
if (!((status2 ^ status1) & UART_MCR_LOOP)) {
- serial_outp(up, UART_LCR, 0);
- serial_outp(up, UART_MCR, status1 ^ UART_MCR_LOOP);
- serial_outp(up, UART_LCR, 0xE0);
+ serial_out(up, UART_LCR, 0);
+ serial_out(up, UART_MCR, status1 ^ UART_MCR_LOOP);
+ serial_out(up, UART_LCR, 0xE0);
status2 = serial_in(up, 0x02); /* EXCR1 */
- serial_outp(up, UART_LCR, 0);
- serial_outp(up, UART_MCR, status1);
+ serial_out(up, UART_LCR, 0);
+ serial_out(up, UART_MCR, status1);
if ((status2 ^ status1) & UART_MCR_LOOP) {
unsigned short quot;
- serial_outp(up, UART_LCR, 0xE0);
+ serial_out(up, UART_LCR, 0xE0);
quot = serial_dl_read(up);
quot <<= 3;
@@ -964,7 +942,7 @@ static void autoconfig_16550a(struct uart_8250_port *up)
if (ns16550a_goto_highspeed(up))
serial_dl_write(up, quot);
- serial_outp(up, UART_LCR, 0);
+ serial_out(up, UART_LCR, 0);
up->port.uartclk = 921600*16;
up->port.type = PORT_NS16550A;
@@ -979,15 +957,15 @@ static void autoconfig_16550a(struct uart_8250_port *up)
* Try setting it with and without DLAB set. Cheap clones
* set bit 5 without DLAB set.
*/
- serial_outp(up, UART_LCR, 0);
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
+ serial_out(up, UART_LCR, 0);
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
status1 = serial_in(up, UART_IIR) >> 5;
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
- serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_A);
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
status2 = serial_in(up, UART_IIR) >> 5;
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
- serial_outp(up, UART_LCR, 0);
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ serial_out(up, UART_LCR, 0);
DEBUG_AUTOCONF("iir1=%d iir2=%d ", status1, status2);
@@ -1006,13 +984,13 @@ static void autoconfig_16550a(struct uart_8250_port *up)
* already a 1 and maybe locked there before we even start start.
*/
iersave = serial_in(up, UART_IER);
- serial_outp(up, UART_IER, iersave & ~UART_IER_UUE);
+ serial_out(up, UART_IER, iersave & ~UART_IER_UUE);
if (!(serial_in(up, UART_IER) & UART_IER_UUE)) {
/*
* OK it's in a known zero state, try writing and reading
* without disturbing the current state of the other bits.
*/
- serial_outp(up, UART_IER, iersave | UART_IER_UUE);
+ serial_out(up, UART_IER, iersave | UART_IER_UUE);
if (serial_in(up, UART_IER) & UART_IER_UUE) {
/*
* It's an Xscale.
@@ -1030,7 +1008,7 @@ static void autoconfig_16550a(struct uart_8250_port *up)
*/
DEBUG_AUTOCONF("Couldn't force IER_UUE to 0 ");
}
- serial_outp(up, UART_IER, iersave);
+ serial_out(up, UART_IER, iersave);
/*
* Exar uarts have EFR in a weird location
@@ -1061,24 +1039,25 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
{
unsigned char status1, scratch, scratch2, scratch3;
unsigned char save_lcr, save_mcr;
+ struct uart_port *port = &up->port;
unsigned long flags;
- if (!up->port.iobase && !up->port.mapbase && !up->port.membase)
+ if (!port->iobase && !port->mapbase && !port->membase)
return;
DEBUG_AUTOCONF("ttyS%d: autoconf (0x%04lx, 0x%p): ",
- serial_index(&up->port), up->port.iobase, up->port.membase);
+ serial_index(port), port->iobase, port->membase);
/*
* We really do need global IRQs disabled here - we're going to
* be frobbing the chips IRQ enable register to see if it exists.
*/
- spin_lock_irqsave(&up->port.lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
up->capabilities = 0;
up->bugs = 0;
- if (!(up->port.flags & UPF_BUGGY_UART)) {
+ if (!(port->flags & UPF_BUGGY_UART)) {
/*
* Do a simple existence test first; if we fail this,
* there's no point trying anything else.
@@ -1092,8 +1071,8 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
* Note: this is safe as long as MCR bit 4 is clear
* and the device is in "PC" mode.
*/
- scratch = serial_inp(up, UART_IER);
- serial_outp(up, UART_IER, 0);
+ scratch = serial_in(up, UART_IER);
+ serial_out(up, UART_IER, 0);
#ifdef __i386__
outb(0xff, 0x080);
#endif
@@ -1101,13 +1080,13 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
* Mask out IER[7:4] bits for test as some UARTs (e.g. TL
* 16C754B) allow only to modify them if an EFR bit is set.
*/
- scratch2 = serial_inp(up, UART_IER) & 0x0f;
- serial_outp(up, UART_IER, 0x0F);
+ scratch2 = serial_in(up, UART_IER) & 0x0f;
+ serial_out(up, UART_IER, 0x0F);
#ifdef __i386__
outb(0, 0x080);
#endif
- scratch3 = serial_inp(up, UART_IER) & 0x0f;
- serial_outp(up, UART_IER, scratch);
+ scratch3 = serial_in(up, UART_IER) & 0x0f;
+ serial_out(up, UART_IER, scratch);
if (scratch2 != 0 || scratch3 != 0x0F) {
/*
* We failed; there's nothing here
@@ -1130,10 +1109,10 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
* manufacturer would be stupid enough to design a board
* that conflicts with COM 1-4 --- we hope!
*/
- if (!(up->port.flags & UPF_SKIP_TEST)) {
- serial_outp(up, UART_MCR, UART_MCR_LOOP | 0x0A);
- status1 = serial_inp(up, UART_MSR) & 0xF0;
- serial_outp(up, UART_MCR, save_mcr);
+ if (!(port->flags & UPF_SKIP_TEST)) {
+ serial_out(up, UART_MCR, UART_MCR_LOOP | 0x0A);
+ status1 = serial_in(up, UART_MSR) & 0xF0;
+ serial_out(up, UART_MCR, save_mcr);
if (status1 != 0x90) {
DEBUG_AUTOCONF("LOOP test failed (%02x) ",
status1);
@@ -1150,11 +1129,11 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
* We also initialise the EFR (if any) to zero for later. The
* EFR occupies the same register location as the FCR and IIR.
*/
- serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
- serial_outp(up, UART_EFR, 0);
- serial_outp(up, UART_LCR, 0);
+ serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
+ serial_out(up, UART_EFR, 0);
+ serial_out(up, UART_LCR, 0);
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);
scratch = serial_in(up, UART_IIR) >> 6;
DEBUG_AUTOCONF("iir=%d ", scratch);
@@ -1164,10 +1143,10 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
autoconfig_8250(up);
break;
case 1:
- up->port.type = PORT_UNKNOWN;
+ port->type = PORT_UNKNOWN;
break;
case 2:
- up->port.type = PORT_16550;
+ port->type = PORT_16550;
break;
case 3:
autoconfig_16550a(up);
@@ -1178,102 +1157,102 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
/*
* Only probe for RSA ports if we got the region.
*/
- if (up->port.type == PORT_16550A && probeflags & PROBE_RSA) {
+ if (port->type == PORT_16550A && probeflags & PROBE_RSA) {
int i;
for (i = 0 ; i < probe_rsa_count; ++i) {
- if (probe_rsa[i] == up->port.iobase &&
- __enable_rsa(up)) {
- up->port.type = PORT_RSA;
+ if (probe_rsa[i] == port->iobase && __enable_rsa(up)) {
+ port->type = PORT_RSA;
break;
}
}
}
#endif
- serial_outp(up, UART_LCR, save_lcr);
+ serial_out(up, UART_LCR, save_lcr);
- if (up->capabilities != uart_config[up->port.type].flags) {
+ if (up->capabilities != uart_config[port->type].flags) {
printk(KERN_WARNING
"ttyS%d: detected caps %08x should be %08x\n",
- serial_index(&up->port), up->capabilities,
- uart_config[up->port.type].flags);
+ serial_index(port), up->capabilities,
+ uart_config[port->type].flags);
}
- up->port.fifosize = uart_config[up->port.type].fifo_size;
- up->capabilities = uart_config[up->port.type].flags;
- up->tx_loadsz = uart_config[up->port.type].tx_loadsz;
+ port->fifosize = uart_config[up->port.type].fifo_size;
+ up->capabilities = uart_config[port->type].flags;
+ up->tx_loadsz = uart_config[port->type].tx_loadsz;
- if (up->port.type == PORT_UNKNOWN)
+ if (port->type == PORT_UNKNOWN)
goto out;
/*
* Reset the UART.
*/
#ifdef CONFIG_SERIAL_8250_RSA
- if (up->port.type == PORT_RSA)
- serial_outp(up, UART_RSA_FRR, 0);
+ if (port->type == PORT_RSA)
+ serial_out(up, UART_RSA_FRR, 0);
#endif
- serial_outp(up, UART_MCR, save_mcr);
+ serial_out(up, UART_MCR, save_mcr);
serial8250_clear_fifos(up);
serial_in(up, UART_RX);
if (up->capabilities & UART_CAP_UUE)
- serial_outp(up, UART_IER, UART_IER_UUE);
+ serial_out(up, UART_IER, UART_IER_UUE);
else
- serial_outp(up, UART_IER, 0);
+ serial_out(up, UART_IER, 0);
out:
- spin_unlock_irqrestore(&up->port.lock, flags);
- DEBUG_AUTOCONF("type=%s\n", uart_config[up->port.type].name);
+ spin_unlock_irqrestore(&port->lock, flags);
+ DEBUG_AUTOCONF("type=%s\n", uart_config[port->type].name);
}
static void autoconfig_irq(struct uart_8250_port *up)
{
+ struct uart_port *port = &up->port;
unsigned char save_mcr, save_ier;
unsigned char save_ICP = 0;
unsigned int ICP = 0;
unsigned long irqs;
int irq;
- if (up->port.flags & UPF_FOURPORT) {
- ICP = (up->port.iobase & 0xfe0) | 0x1f;
+ if (port->flags & UPF_FOURPORT) {
+ ICP = (port->iobase & 0xfe0) | 0x1f;
save_ICP = inb_p(ICP);
outb_p(0x80, ICP);
- (void) inb_p(ICP);
+ inb_p(ICP);
}
/* forget possible initially masked and pending IRQ */
probe_irq_off(probe_irq_on());
- save_mcr = serial_inp(up, UART_MCR);
- save_ier = serial_inp(up, UART_IER);
- serial_outp(up, UART_MCR, UART_MCR_OUT1 | UART_MCR_OUT2);
+ save_mcr = serial_in(up, UART_MCR);
+ save_ier = serial_in(up, UART_IER);
+ serial_out(up, UART_MCR, UART_MCR_OUT1 | UART_MCR_OUT2);
irqs = probe_irq_on();
- serial_outp(up, UART_MCR, 0);
+ serial_out(up, UART_MCR, 0);
udelay(10);
- if (up->port.flags & UPF_FOURPORT) {
- serial_outp(up, UART_MCR,
+ if (port->flags & UPF_FOURPORT) {
+ serial_out(up, UART_MCR,
UART_MCR_DTR | UART_MCR_RTS);
} else {
- serial_outp(up, UART_MCR,
+ serial_out(up, UART_MCR,
UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2);
}
- serial_outp(up, UART_IER, 0x0f); /* enable all intrs */
- (void)serial_inp(up, UART_LSR);
- (void)serial_inp(up, UART_RX);
- (void)serial_inp(up, UART_IIR);
- (void)serial_inp(up, UART_MSR);
- serial_outp(up, UART_TX, 0xFF);
+ serial_out(up, UART_IER, 0x0f); /* enable all intrs */
+ serial_in(up, UART_LSR);
+ serial_in(up, UART_RX);
+ serial_in(up, UART_IIR);
+ serial_in(up, UART_MSR);
+ serial_out(up, UART_TX, 0xFF);
udelay(20);
irq = probe_irq_off(irqs);
- serial_outp(up, UART_MCR, save_mcr);
- serial_outp(up, UART_IER, save_ier);
+ serial_out(up, UART_MCR, save_mcr);
+ serial_out(up, UART_IER, save_ier);
- if (up->port.flags & UPF_FOURPORT)
+ if (port->flags & UPF_FOURPORT)
outb_p(save_ICP, ICP);
- up->port.irq = (irq > 0) ? irq : 0;
+ port->irq = (irq > 0) ? irq : 0;
}
static inline void __stop_tx(struct uart_8250_port *p)
@@ -1294,7 +1273,7 @@ static void serial8250_stop_tx(struct uart_port *port)
/*
* We really want to stop the transmitter from sending.
*/
- if (up->port.type == PORT_16C950) {
+ if (port->type == PORT_16C950) {
up->acr |= UART_ACR_TXDIS;
serial_icr_write(up, UART_ACR, up->acr);
}
@@ -1307,13 +1286,13 @@ static void serial8250_start_tx(struct uart_port *port)
if (!(up->ier & UART_IER_THRI)) {
up->ier |= UART_IER_THRI;
- serial_out(up, UART_IER, up->ier);
+ serial_port_out(port, UART_IER, up->ier);
if (up->bugs & UART_BUG_TXEN) {
unsigned char lsr;
lsr = serial_in(up, UART_LSR);
up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS;
- if ((up->port.type == PORT_RM9000) ?
+ if ((port->type == PORT_RM9000) ?
(lsr & UART_LSR_THRE) :
(lsr & UART_LSR_TEMT))
serial8250_tx_chars(up);
@@ -1323,7 +1302,7 @@ static void serial8250_start_tx(struct uart_port *port)
/*
* Re-enable the transmitter if we disabled it.
*/
- if (up->port.type == PORT_16C950 && up->acr & UART_ACR_TXDIS) {
+ if (port->type == PORT_16C950 && up->acr & UART_ACR_TXDIS) {
up->acr &= ~UART_ACR_TXDIS;
serial_icr_write(up, UART_ACR, up->acr);
}
@@ -1336,7 +1315,7 @@ static void serial8250_stop_rx(struct uart_port *port)
up->ier &= ~UART_IER_RLSI;
up->port.read_status_mask &= ~UART_LSR_DR;
- serial_out(up, UART_IER, up->ier);
+ serial_port_out(port, UART_IER, up->ier);
}
static void serial8250_enable_ms(struct uart_port *port)
@@ -1349,7 +1328,7 @@ static void serial8250_enable_ms(struct uart_port *port)
return;
up->ier |= UART_IER_MSI;
- serial_out(up, UART_IER, up->ier);
+ serial_port_out(port, UART_IER, up->ier);
}
/*
@@ -1381,14 +1360,15 @@ static void clear_rx_fifo(struct uart_8250_port *up)
unsigned char
serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr)
{
- struct tty_struct *tty = up->port.state->port.tty;
+ struct uart_port *port = &up->port;
+ struct tty_struct *tty = port->state->port.tty;
unsigned char ch;
int max_count = 256;
char flag;
do {
if (likely(lsr & UART_LSR_DR))
- ch = serial_inp(up, UART_RX);
+ ch = serial_in(up, UART_RX);
else
/*
* Intel 82571 has a Serial Over Lan device that will
@@ -1400,7 +1380,7 @@ serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr)
ch = 0;
flag = TTY_NORMAL;
- up->port.icount.rx++;
+ port->icount.rx++;
lsr |= up->lsr_saved_flags;
up->lsr_saved_flags = 0;
@@ -1411,12 +1391,12 @@ serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr)
*/
if (lsr & UART_LSR_BI) {
lsr &= ~(UART_LSR_FE | UART_LSR_PE);
- up->port.icount.brk++;
+ port->icount.brk++;
/*
* If tegra port then clear the rx fifo to
* accept another break/character.
*/
- if (up->port.type == PORT_TEGRA)
+ if (port->type == PORT_TEGRA)
clear_rx_fifo(up);
/*
@@ -1425,19 +1405,19 @@ serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr)
* may get masked by ignore_status_mask
* or read_status_mask.
*/
- if (uart_handle_break(&up->port))
+ if (uart_handle_break(port))
goto ignore_char;
} else if (lsr & UART_LSR_PE)
- up->port.icount.parity++;
+ port->icount.parity++;
else if (lsr & UART_LSR_FE)
- up->port.icount.frame++;
+ port->icount.frame++;
if (lsr & UART_LSR_OE)
- up->port.icount.overrun++;
+ port->icount.overrun++;
/*
* Mask off conditions which should be ignored.
*/
- lsr &= up->port.read_status_mask;
+ lsr &= port->read_status_mask;
if (lsr & UART_LSR_BI) {
DEBUG_INTR("handling break....");
@@ -1447,34 +1427,35 @@ serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr)
else if (lsr & UART_LSR_FE)
flag = TTY_FRAME;
}
- if (uart_handle_sysrq_char(&up->port, ch))
+ if (uart_handle_sysrq_char(port, ch))
goto ignore_char;
- uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag);
+ uart_insert_char(port, lsr, UART_LSR_OE, ch, flag);
ignore_char:
- lsr = serial_inp(up, UART_LSR);
+ lsr = serial_in(up, UART_LSR);
} while ((lsr & (UART_LSR_DR | UART_LSR_BI)) && (max_count-- > 0));
- spin_unlock(&up->port.lock);
+ spin_unlock(&port->lock);
tty_flip_buffer_push(tty);
- spin_lock(&up->port.lock);
+ spin_lock(&port->lock);
return lsr;
}
EXPORT_SYMBOL_GPL(serial8250_rx_chars);
void serial8250_tx_chars(struct uart_8250_port *up)
{
- struct circ_buf *xmit = &up->port.state->xmit;
+ struct uart_port *port = &up->port;
+ struct circ_buf *xmit = &port->state->xmit;
int count;
- if (up->port.x_char) {
- serial_outp(up, UART_TX, up->port.x_char);
- up->port.icount.tx++;
- up->port.x_char = 0;
+ if (port->x_char) {
+ serial_out(up, UART_TX, port->x_char);
+ port->icount.tx++;
+ port->x_char = 0;
return;
}
- if (uart_tx_stopped(&up->port)) {
- serial8250_stop_tx(&up->port);
+ if (uart_tx_stopped(port)) {
+ serial8250_stop_tx(port);
return;
}
if (uart_circ_empty(xmit)) {
@@ -1486,13 +1467,13 @@ void serial8250_tx_chars(struct uart_8250_port *up)
do {
serial_out(up, UART_TX, xmit->buf[xmit->tail]);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
- up->port.icount.tx++;
+ port->icount.tx++;
if (uart_circ_empty(xmit))
break;
} while (--count > 0);
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(&up->port);
+ uart_write_wakeup(port);
DEBUG_INTR("THRE...");
@@ -1503,22 +1484,23 @@ EXPORT_SYMBOL_GPL(serial8250_tx_chars);
unsigned int serial8250_modem_status(struct uart_8250_port *up)
{
+ struct uart_port *port = &up->port;
unsigned int status = serial_in(up, UART_MSR);
status |= up->msr_saved_flags;
up->msr_saved_flags = 0;
if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI &&
- up->port.state != NULL) {
+ port->state != NULL) {
if (status & UART_MSR_TERI)
- up->port.icount.rng++;
+ port->icount.rng++;
if (status & UART_MSR_DDSR)
- up->port.icount.dsr++;
+ port->icount.dsr++;
if (status & UART_MSR_DDCD)
- uart_handle_dcd_change(&up->port, status & UART_MSR_DCD);
+ uart_handle_dcd_change(port, status & UART_MSR_DCD);
if (status & UART_MSR_DCTS)
- uart_handle_cts_change(&up->port, status & UART_MSR_CTS);
+ uart_handle_cts_change(port, status & UART_MSR_CTS);
- wake_up_interruptible(&up->port.state->port.delta_msr_wait);
+ wake_up_interruptible(&port->state->port.delta_msr_wait);
}
return status;
@@ -1538,9 +1520,9 @@ int serial8250_handle_irq(struct uart_port *port, unsigned int iir)
if (iir & UART_IIR_NO_INT)
return 0;
- spin_lock_irqsave(&up->port.lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
- status = serial_inp(up, UART_LSR);
+ status = serial_port_in(port, UART_LSR);
DEBUG_INTR("status = %x...", status);
@@ -1550,16 +1532,14 @@ int serial8250_handle_irq(struct uart_port *port, unsigned int iir)
if (status & UART_LSR_THRE)
serial8250_tx_chars(up);
- spin_unlock_irqrestore(&up->port.lock, flags);
+ spin_unlock_irqrestore(&port->lock, flags);
return 1;
}
EXPORT_SYMBOL_GPL(serial8250_handle_irq);
static int serial8250_default_handle_irq(struct uart_port *port)
{
- struct uart_8250_port *up =
- container_of(port, struct uart_8250_port, port);
- unsigned int iir = serial_in(up, UART_IIR);
+ unsigned int iir = serial_port_in(port, UART_IIR);
return serial8250_handle_irq(port, iir);
}
@@ -1750,7 +1730,7 @@ static void serial8250_backup_timeout(unsigned long data)
* Must disable interrupts or else we risk racing with the interrupt
* based handler.
*/
- if (is_real_interrupt(up->port.irq)) {
+ if (up->port.irq) {
ier = serial_in(up, UART_IER);
serial_out(up, UART_IER, 0);
}
@@ -1775,7 +1755,7 @@ static void serial8250_backup_timeout(unsigned long data)
if (!(iir & UART_IIR_NO_INT))
serial8250_tx_chars(up);
- if (is_real_interrupt(up->port.irq))
+ if (up->port.irq)
serial_out(up, UART_IER, ier);
spin_unlock_irqrestore(&up->port.lock, flags);
@@ -1792,10 +1772,10 @@ static unsigned int serial8250_tx_empty(struct uart_port *port)
unsigned long flags;
unsigned int lsr;
- spin_lock_irqsave(&up->port.lock, flags);
- lsr = serial_in(up, UART_LSR);
+ spin_lock_irqsave(&port->lock, flags);
+ lsr = serial_port_in(port, UART_LSR);
up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS;
- spin_unlock_irqrestore(&up->port.lock, flags);
+ spin_unlock_irqrestore(&port->lock, flags);
return (lsr & BOTH_EMPTY) == BOTH_EMPTY ? TIOCSER_TEMT : 0;
}
@@ -1840,7 +1820,7 @@ static void serial8250_set_mctrl(struct uart_port *port, unsigned int mctrl)
mcr = (mcr & up->mcr_mask) | up->mcr_force | up->mcr;
- serial_out(up, UART_MCR, mcr);
+ serial_port_out(port, UART_MCR, mcr);
}
static void serial8250_break_ctl(struct uart_port *port, int break_state)
@@ -1849,13 +1829,13 @@ static void serial8250_break_ctl(struct uart_port *port, int break_state)
container_of(port, struct uart_8250_port, port);
unsigned long flags;
- spin_lock_irqsave(&up->port.lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
if (break_state == -1)
up->lcr |= UART_LCR_SBC;
else
up->lcr &= ~UART_LCR_SBC;
- serial_out(up, UART_LCR, up->lcr);
- spin_unlock_irqrestore(&up->port.lock, flags);
+ serial_port_out(port, UART_LCR, up->lcr);
+ spin_unlock_irqrestore(&port->lock, flags);
}
/*
@@ -1900,14 +1880,12 @@ static void wait_for_xmitr(struct uart_8250_port *up, int bits)
static int serial8250_get_poll_char(struct uart_port *port)
{
- struct uart_8250_port *up =
- container_of(port, struct uart_8250_port, port);
- unsigned char lsr = serial_inp(up, UART_LSR);
+ unsigned char lsr = serial_port_in(port, UART_LSR);
if (!(lsr & UART_LSR_DR))
return NO_POLL_CHAR;
- return serial_inp(up, UART_RX);
+ return serial_port_in(port, UART_RX);
}
@@ -1921,21 +1899,21 @@ static void serial8250_put_poll_char(struct uart_port *port,
/*
* First save the IER then disable the interrupts
*/
- ier = serial_in(up, UART_IER);
+ ier = serial_port_in(port, UART_IER);
if (up->capabilities & UART_CAP_UUE)
- serial_out(up, UART_IER, UART_IER_UUE);
+ serial_port_out(port, UART_IER, UART_IER_UUE);
else
- serial_out(up, UART_IER, 0);
+ serial_port_out(port, UART_IER, 0);
wait_for_xmitr(up, BOTH_EMPTY);
/*
* Send the character out.
* If a LF, also do CR...
*/
- serial_out(up, UART_TX, c);
+ serial_port_out(port, UART_TX, c);
if (c == 10) {
wait_for_xmitr(up, BOTH_EMPTY);
- serial_out(up, UART_TX, 13);
+ serial_port_out(port, UART_TX, 13);
}
/*
@@ -1943,7 +1921,7 @@ static void serial8250_put_poll_char(struct uart_port *port,
* and restore the IER
*/
wait_for_xmitr(up, BOTH_EMPTY);
- serial_out(up, UART_IER, ier);
+ serial_port_out(port, UART_IER, ier);
}
#endif /* CONFIG_CONSOLE_POLL */
@@ -1956,25 +1934,25 @@ static int serial8250_startup(struct uart_port *port)
unsigned char lsr, iir;
int retval;
- up->port.fifosize = uart_config[up->port.type].fifo_size;
+ port->fifosize = uart_config[up->port.type].fifo_size;
up->tx_loadsz = uart_config[up->port.type].tx_loadsz;
up->capabilities = uart_config[up->port.type].flags;
up->mcr = 0;
- if (up->port.iotype != up->cur_iotype)
+ if (port->iotype != up->cur_iotype)
set_io_from_upio(port);
- if (up->port.type == PORT_16C950) {
+ if (port->type == PORT_16C950) {
/* Wake up and initialize UART */
up->acr = 0;
- serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
- serial_outp(up, UART_EFR, UART_EFR_ECB);
- serial_outp(up, UART_IER, 0);
- serial_outp(up, UART_LCR, 0);
+ serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B);
+ serial_port_out(port, UART_EFR, UART_EFR_ECB);
+ serial_port_out(port, UART_IER, 0);
+ serial_port_out(port, UART_LCR, 0);
serial_icr_write(up, UART_CSR, 0); /* Reset the UART */
- serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
- serial_outp(up, UART_EFR, UART_EFR_ECB);
- serial_outp(up, UART_LCR, 0);
+ serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B);
+ serial_port_out(port, UART_EFR, UART_EFR_ECB);
+ serial_port_out(port, UART_LCR, 0);
}
#ifdef CONFIG_SERIAL_8250_RSA
@@ -1994,41 +1972,43 @@ static int serial8250_startup(struct uart_port *port)
/*
* Clear the interrupt registers.
*/
- (void) serial_inp(up, UART_LSR);
- (void) serial_inp(up, UART_RX);
- (void) serial_inp(up, UART_IIR);
- (void) serial_inp(up, UART_MSR);
+ serial_port_in(port, UART_LSR);
+ serial_port_in(port, UART_RX);
+ serial_port_in(port, UART_IIR);
+ serial_port_in(port, UART_MSR);
/*
* At this point, there's no way the LSR could still be 0xff;
* if it is, then bail out, because there's likely no UART
* here.
*/
- if (!(up->port.flags & UPF_BUGGY_UART) &&
- (serial_inp(up, UART_LSR) == 0xff)) {
+ if (!(port->flags & UPF_BUGGY_UART) &&
+ (serial_port_in(port, UART_LSR) == 0xff)) {
printk_ratelimited(KERN_INFO "ttyS%d: LSR safety check engaged!\n",
- serial_index(&up->port));
+ serial_index(port));
return -ENODEV;
}
/*
* For a XR16C850, we need to set the trigger levels
*/
- if (up->port.type == PORT_16850) {
+ if (port->type == PORT_16850) {
unsigned char fctr;
- serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
+ serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
- fctr = serial_inp(up, UART_FCTR) & ~(UART_FCTR_RX|UART_FCTR_TX);
- serial_outp(up, UART_FCTR, fctr | UART_FCTR_TRGD | UART_FCTR_RX);
- serial_outp(up, UART_TRG, UART_TRG_96);
- serial_outp(up, UART_FCTR, fctr | UART_FCTR_TRGD | UART_FCTR_TX);
- serial_outp(up, UART_TRG, UART_TRG_96);
+ fctr = serial_in(up, UART_FCTR) & ~(UART_FCTR_RX|UART_FCTR_TX);
+ serial_port_out(port, UART_FCTR,
+ fctr | UART_FCTR_TRGD | UART_FCTR_RX);
+ serial_port_out(port, UART_TRG, UART_TRG_96);
+ serial_port_out(port, UART_FCTR,
+ fctr | UART_FCTR_TRGD | UART_FCTR_TX);
+ serial_port_out(port, UART_TRG, UART_TRG_96);
- serial_outp(up, UART_LCR, 0);
+ serial_port_out(port, UART_LCR, 0);
}
- if (is_real_interrupt(up->port.irq)) {
+ if (port->irq) {
unsigned char iir1;
/*
* Test for UARTs that do not reassert THRE when the
@@ -2038,23 +2018,23 @@ static int serial8250_startup(struct uart_port *port)
* the interrupt is enabled. Delays are necessary to
* allow register changes to become visible.
*/
- spin_lock_irqsave(&up->port.lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
if (up->port.irqflags & IRQF_SHARED)
- disable_irq_nosync(up->port.irq);
+ disable_irq_nosync(port->irq);
wait_for_xmitr(up, UART_LSR_THRE);
- serial_out_sync(up, UART_IER, UART_IER_THRI);
+ serial_port_out_sync(port, UART_IER, UART_IER_THRI);
udelay(1); /* allow THRE to set */
- iir1 = serial_in(up, UART_IIR);
- serial_out(up, UART_IER, 0);
- serial_out_sync(up, UART_IER, UART_IER_THRI);
+ iir1 = serial_port_in(port, UART_IIR);
+ serial_port_out(port, UART_IER, 0);
+ serial_port_out_sync(port, UART_IER, UART_IER_THRI);
udelay(1); /* allow a working UART time to re-assert THRE */
- iir = serial_in(up, UART_IIR);
- serial_out(up, UART_IER, 0);
+ iir = serial_port_in(port, UART_IIR);
+ serial_port_out(port, UART_IER, 0);
- if (up->port.irqflags & IRQF_SHARED)
- enable_irq(up->port.irq);
- spin_unlock_irqrestore(&up->port.lock, flags);
+ if (port->irqflags & IRQF_SHARED)
+ enable_irq(port->irq);
+ spin_unlock_irqrestore(&port->lock, flags);
/*
* If the interrupt is not reasserted, setup a timer to
@@ -2083,7 +2063,7 @@ static int serial8250_startup(struct uart_port *port)
* hardware interrupt, we use a timer-based system. The original
* driver used to do this with IRQ0.
*/
- if (!is_real_interrupt(up->port.irq)) {
+ if (!port->irq) {
up->timer.data = (unsigned long)up;
mod_timer(&up->timer, jiffies + uart_poll_timeout(port));
} else {
@@ -2095,20 +2075,20 @@ static int serial8250_startup(struct uart_port *port)
/*
* Now, initialize the UART
*/
- serial_outp(up, UART_LCR, UART_LCR_WLEN8);
+ serial_port_out(port, UART_LCR, UART_LCR_WLEN8);
- spin_lock_irqsave(&up->port.lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
if (up->port.flags & UPF_FOURPORT) {
- if (!is_real_interrupt(up->port.irq))
+ if (!up->port.irq)
up->port.mctrl |= TIOCM_OUT1;
} else
/*
* Most PC uarts need OUT2 raised to enable interrupts.
*/
- if (is_real_interrupt(up->port.irq))
+ if (port->irq)
up->port.mctrl |= TIOCM_OUT2;
- serial8250_set_mctrl(&up->port, up->port.mctrl);
+ serial8250_set_mctrl(port, port->mctrl);
/* Serial over Lan (SoL) hack:
Intel 8257x Gigabit ethernet chips have a
@@ -2128,10 +2108,10 @@ static int serial8250_startup(struct uart_port *port)
* Do a quick test to see if we receive an
* interrupt when we enable the TX irq.
*/
- serial_outp(up, UART_IER, UART_IER_THRI);
- lsr = serial_in(up, UART_LSR);
- iir = serial_in(up, UART_IIR);
- serial_outp(up, UART_IER, 0);
+ serial_port_out(port, UART_IER, UART_IER_THRI);
+ lsr = serial_port_in(port, UART_LSR);
+ iir = serial_port_in(port, UART_IIR);
+ serial_port_out(port, UART_IER, 0);
if (lsr & UART_LSR_TEMT && iir & UART_IIR_NO_INT) {
if (!(up->bugs & UART_BUG_TXEN)) {
@@ -2144,17 +2124,17 @@ static int serial8250_startup(struct uart_port *port)
}
dont_test_tx_en:
- spin_unlock_irqrestore(&up->port.lock, flags);
+ spin_unlock_irqrestore(&port->lock, flags);
/*
* Clear the interrupt registers again for luck, and clear the
* saved flags to avoid getting false values from polling
* routines or the previous session.
*/
- serial_inp(up, UART_LSR);
- serial_inp(up, UART_RX);
- serial_inp(up, UART_IIR);
- serial_inp(up, UART_MSR);
+ serial_port_in(port, UART_LSR);
+ serial_port_in(port, UART_RX);
+ serial_port_in(port, UART_IIR);
+ serial_port_in(port, UART_MSR);
up->lsr_saved_flags = 0;
up->msr_saved_flags = 0;
@@ -2164,16 +2144,16 @@ dont_test_tx_en:
* anyway, so we don't enable them here.
*/
up->ier = UART_IER_RLSI | UART_IER_RDI;
- serial_outp(up, UART_IER, up->ier);
+ serial_port_out(port, UART_IER, up->ier);
- if (up->port.flags & UPF_FOURPORT) {
+ if (port->flags & UPF_FOURPORT) {
unsigned int icp;
/*
* Enable interrupts on the AST Fourport board
*/
- icp = (up->port.iobase & 0xfe0) | 0x01f;
+ icp = (port->iobase & 0xfe0) | 0x01f;
outb_p(0x80, icp);
- (void) inb_p(icp);
+ inb_p(icp);
}
return 0;
@@ -2189,23 +2169,24 @@ static void serial8250_shutdown(struct uart_port *port)
* Disable interrupts from this port
*/
up->ier = 0;
- serial_outp(up, UART_IER, 0);
+ serial_port_out(port, UART_IER, 0);
- spin_lock_irqsave(&up->port.lock, flags);
- if (up->port.flags & UPF_FOURPORT) {
+ spin_lock_irqsave(&port->lock, flags);
+ if (port->flags & UPF_FOURPORT) {
/* reset interrupts on the AST Fourport board */
- inb((up->port.iobase & 0xfe0) | 0x1f);
- up->port.mctrl |= TIOCM_OUT1;
+ inb((port->iobase & 0xfe0) | 0x1f);
+ port->mctrl |= TIOCM_OUT1;
} else
- up->port.mctrl &= ~TIOCM_OUT2;
+ port->mctrl &= ~TIOCM_OUT2;
- serial8250_set_mctrl(&up->port, up->port.mctrl);
- spin_unlock_irqrestore(&up->port.lock, flags);
+ serial8250_set_mctrl(port, port->mctrl);
+ spin_unlock_irqrestore(&port->lock, flags);
/*
* Disable break condition and FIFOs
*/
- serial_out(up, UART_LCR, serial_inp(up, UART_LCR) & ~UART_LCR_SBC);
+ serial_port_out(port, UART_LCR,
+ serial_port_in(port, UART_LCR) & ~UART_LCR_SBC);
serial8250_clear_fifos(up);
#ifdef CONFIG_SERIAL_8250_RSA
@@ -2219,11 +2200,11 @@ static void serial8250_shutdown(struct uart_port *port)
* Read data port to reset things, and then unlink from
* the IRQ chain.
*/
- (void) serial_in(up, UART_RX);
+ serial_port_in(port, UART_RX);
del_timer_sync(&up->timer);
up->timer.function = serial8250_timeout;
- if (is_real_interrupt(up->port.irq))
+ if (port->irq)
serial_unlink_irq_chain(up);
}
@@ -2298,11 +2279,11 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
if (up->bugs & UART_BUG_QUOT && (quot & 0xff) == 0)
quot++;
- if (up->capabilities & UART_CAP_FIFO && up->port.fifosize > 1) {
+ if (up->capabilities & UART_CAP_FIFO && port->fifosize > 1) {
if (baud < 2400)
fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_1;
else
- fcr = uart_config[up->port.type].fcr;
+ fcr = uart_config[port->type].fcr;
}
/*
@@ -2313,7 +2294,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
* have sufficient FIFO entries for the latency of the remote
* UART to respond. IOW, at least 32 bytes of FIFO.
*/
- if (up->capabilities & UART_CAP_AFE && up->port.fifosize >= 32) {
+ if (up->capabilities & UART_CAP_AFE && port->fifosize >= 32) {
up->mcr &= ~UART_MCR_AFE;
if (termios->c_cflag & CRTSCTS)
up->mcr |= UART_MCR_AFE;
@@ -2323,40 +2304,40 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
* Ok, we're now changing the port state. Do it with
* interrupts disabled.
*/
- spin_lock_irqsave(&up->port.lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
/*
* Update the per-port timeout.
*/
uart_update_timeout(port, termios->c_cflag, baud);
- up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
+ port->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
if (termios->c_iflag & INPCK)
- up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE;
+ port->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
if (termios->c_iflag & (BRKINT | PARMRK))
- up->port.read_status_mask |= UART_LSR_BI;
+ port->read_status_mask |= UART_LSR_BI;
/*
* Characteres to ignore
*/
- up->port.ignore_status_mask = 0;
+ port->ignore_status_mask = 0;
if (termios->c_iflag & IGNPAR)
- up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;
+ port->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;
if (termios->c_iflag & IGNBRK) {
- up->port.ignore_status_mask |= UART_LSR_BI;
+ port->ignore_status_mask |= UART_LSR_BI;
/*
* If we're ignoring parity and break indicators,
* ignore overruns too (for real raw support).
*/
if (termios->c_iflag & IGNPAR)
- up->port.ignore_status_mask |= UART_LSR_OE;
+ port->ignore_status_mask |= UART_LSR_OE;
}
/*
* ignore all characters if CREAD is not set
*/
if ((termios->c_cflag & CREAD) == 0)
- up->port.ignore_status_mask |= UART_LSR_DR;
+ port->ignore_status_mask |= UART_LSR_DR;
/*
* CTS flow control flag and modem status interrupts
@@ -2370,7 +2351,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
if (up->capabilities & UART_CAP_RTOIE)
up->ier |= UART_IER_RTOIE;
- serial_out(up, UART_IER, up->ier);
+ serial_port_out(port, UART_IER, up->ier);
if (up->capabilities & UART_CAP_EFR) {
unsigned char efr = 0;
@@ -2382,11 +2363,11 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
if (termios->c_cflag & CRTSCTS)
efr |= UART_EFR_CTS;
- serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
- if (up->port.flags & UPF_EXAR_EFR)
- serial_outp(up, UART_XR_EFR, efr);
+ serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B);
+ if (port->flags & UPF_EXAR_EFR)
+ serial_port_out(port, UART_XR_EFR, efr);
else
- serial_outp(up, UART_EFR, efr);
+ serial_port_out(port, UART_EFR, efr);
}
#ifdef CONFIG_ARCH_OMAP
@@ -2394,18 +2375,20 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
if (cpu_is_omap1510() && is_omap_port(up)) {
if (baud == 115200) {
quot = 1;
- serial_out(up, UART_OMAP_OSC_12M_SEL, 1);
+ serial_port_out(port, UART_OMAP_OSC_12M_SEL, 1);
} else
- serial_out(up, UART_OMAP_OSC_12M_SEL, 0);
+ serial_port_out(port, UART_OMAP_OSC_12M_SEL, 0);
}
#endif
- if (up->capabilities & UART_NATSEMI) {
- /* Switch to bank 2 not bank 1, to avoid resetting EXCR2 */
- serial_outp(up, UART_LCR, 0xe0);
- } else {
- serial_outp(up, UART_LCR, cval | UART_LCR_DLAB);/* set DLAB */
- }
+ /*
+ * For NatSemi, switch to bank 2 not bank 1, to avoid resetting EXCR2,
+ * otherwise just set DLAB
+ */
+ if (up->capabilities & UART_NATSEMI)
+ serial_port_out(port, UART_LCR, 0xe0);
+ else
+ serial_port_out(port, UART_LCR, cval | UART_LCR_DLAB);
serial_dl_write(up, quot);
@@ -2413,20 +2396,19 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
* LCR DLAB must be set to enable 64-byte FIFO mode. If the FCR
* is written without DLAB set, this mode will be disabled.
*/
- if (up->port.type == PORT_16750)
- serial_outp(up, UART_FCR, fcr);
+ if (port->type == PORT_16750)
+ serial_port_out(port, UART_FCR, fcr);
- serial_outp(up, UART_LCR, cval); /* reset DLAB */
+ serial_port_out(port, UART_LCR, cval); /* reset DLAB */
up->lcr = cval; /* Save LCR */
- if (up->port.type != PORT_16750) {
- if (fcr & UART_FCR_ENABLE_FIFO) {
- /* emulated UARTs (Lucent Venus 167x) need two steps */
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
- }
- serial_outp(up, UART_FCR, fcr); /* set fcr */
- }
- serial8250_set_mctrl(&up->port, up->port.mctrl);
- spin_unlock_irqrestore(&up->port.lock, flags);
+ if (port->type != PORT_16750) {
+ /* emulated UARTs (Lucent Venus 167x) need two steps */
+ if (fcr & UART_FCR_ENABLE_FIFO)
+ serial_port_out(port, UART_FCR, UART_FCR_ENABLE_FIFO);
+ serial_port_out(port, UART_FCR, fcr); /* set fcr */
+ }
+ serial8250_set_mctrl(port, port->mctrl);
+ spin_unlock_irqrestore(&port->lock, flags);
/* Don't rewrite B0 */
if (tty_termios_baud_rate(termios))
tty_termios_encode_baud_rate(termios, baud, baud);
@@ -2491,26 +2473,26 @@ static unsigned int serial8250_port_size(struct uart_8250_port *pt)
static int serial8250_request_std_resource(struct uart_8250_port *up)
{
unsigned int size = serial8250_port_size(up);
+ struct uart_port *port = &up->port;
int ret = 0;
- switch (up->port.iotype) {
+ switch (port->iotype) {
case UPIO_AU:
case UPIO_TSI:
case UPIO_MEM32:
case UPIO_MEM:
- if (!up->port.mapbase)
+ if (!port->mapbase)
break;
- if (!request_mem_region(up->port.mapbase, size, "serial")) {
+ if (!request_mem_region(port->mapbase, size, "serial")) {
ret = -EBUSY;
break;
}
- if (up->port.flags & UPF_IOREMAP) {
- up->port.membase = ioremap_nocache(up->port.mapbase,
- size);
- if (!up->port.membase) {
- release_mem_region(up->port.mapbase, size);
+ if (port->flags & UPF_IOREMAP) {
+ port->membase = ioremap_nocache(port->mapbase, size);
+ if (!port->membase) {
+ release_mem_region(port->mapbase, size);
ret = -ENOMEM;
}
}
@@ -2518,7 +2500,7 @@ static int serial8250_request_std_resource(struct uart_8250_port *up)
case UPIO_HUB6:
case UPIO_PORT:
- if (!request_region(up->port.iobase, size, "serial"))
+ if (!request_region(port->iobase, size, "serial"))
ret = -EBUSY;
break;
}
@@ -2528,26 +2510,27 @@ static int serial8250_request_std_resource(struct uart_8250_port *up)
static void serial8250_release_std_resource(struct uart_8250_port *up)
{
unsigned int size = serial8250_port_size(up);
+ struct uart_port *port = &up->port;
- switch (up->port.iotype) {
+ switch (port->iotype) {
case UPIO_AU:
case UPIO_TSI:
case UPIO_MEM32:
case UPIO_MEM:
- if (!up->port.mapbase)
+ if (!port->mapbase)
break;
- if (up->port.flags & UPF_IOREMAP) {
- iounmap(up->port.membase);
- up->port.membase = NULL;
+ if (port->flags & UPF_IOREMAP) {
+ iounmap(port->membase);
+ port->membase = NULL;
}
- release_mem_region(up->port.mapbase, size);
+ release_mem_region(port->mapbase, size);
break;
case UPIO_HUB6:
case UPIO_PORT:
- release_region(up->port.iobase, size);
+ release_region(port->iobase, size);
break;
}
}
@@ -2556,12 +2539,13 @@ static int serial8250_request_rsa_resource(struct uart_8250_port *up)
{
unsigned long start = UART_RSA_BASE << up->port.regshift;
unsigned int size = 8 << up->port.regshift;
+ struct uart_port *port = &up->port;
int ret = -EINVAL;
- switch (up->port.iotype) {
+ switch (port->iotype) {
case UPIO_HUB6:
case UPIO_PORT:
- start += up->port.iobase;
+ start += port->iobase;
if (request_region(start, size, "serial-rsa"))
ret = 0;
else
@@ -2576,11 +2560,12 @@ static void serial8250_release_rsa_resource(struct uart_8250_port *up)
{
unsigned long offset = UART_RSA_BASE << up->port.regshift;
unsigned int size = 8 << up->port.regshift;
+ struct uart_port *port = &up->port;
- switch (up->port.iotype) {
+ switch (port->iotype) {
case UPIO_HUB6:
case UPIO_PORT:
- release_region(up->port.iobase + offset, size);
+ release_region(port->iobase + offset, size);
break;
}
}
@@ -2591,7 +2576,7 @@ static void serial8250_release_port(struct uart_port *port)
container_of(port, struct uart_8250_port, port);
serial8250_release_std_resource(up);
- if (up->port.type == PORT_RSA)
+ if (port->type == PORT_RSA)
serial8250_release_rsa_resource(up);
}
@@ -2602,7 +2587,7 @@ static int serial8250_request_port(struct uart_port *port)
int ret = 0;
ret = serial8250_request_std_resource(up);
- if (ret == 0 && up->port.type == PORT_RSA) {
+ if (ret == 0 && port->type == PORT_RSA) {
ret = serial8250_request_rsa_resource(up);
if (ret < 0)
serial8250_release_std_resource(up);
@@ -2630,22 +2615,22 @@ static void serial8250_config_port(struct uart_port *port, int flags)
if (ret < 0)
probeflags &= ~PROBE_RSA;
- if (up->port.iotype != up->cur_iotype)
+ if (port->iotype != up->cur_iotype)
set_io_from_upio(port);
if (flags & UART_CONFIG_TYPE)
autoconfig(up, probeflags);
/* if access method is AU, it is a 16550 with a quirk */
- if (up->port.type == PORT_16550A && up->port.iotype == UPIO_AU)
+ if (port->type == PORT_16550A && port->iotype == UPIO_AU)
up->bugs |= UART_BUG_NOMSR;
- if (up->port.type != PORT_UNKNOWN && flags & UART_CONFIG_IRQ)
+ if (port->type != PORT_UNKNOWN && flags & UART_CONFIG_IRQ)
autoconfig_irq(up);
- if (up->port.type != PORT_RSA && probeflags & PROBE_RSA)
+ if (port->type != PORT_RSA && probeflags & PROBE_RSA)
serial8250_release_rsa_resource(up);
- if (up->port.type == PORT_UNKNOWN)
+ if (port->type == PORT_UNKNOWN)
serial8250_release_std_resource(up);
}
@@ -2719,9 +2704,10 @@ static void __init serial8250_isa_init_ports(void)
for (i = 0; i < nr_uarts; i++) {
struct uart_8250_port *up = &serial8250_ports[i];
+ struct uart_port *port = &up->port;
- up->port.line = i;
- spin_lock_init(&up->port.lock);
+ port->line = i;
+ spin_lock_init(&port->lock);
init_timer(&up->timer);
up->timer.function = serial8250_timeout;
@@ -2732,7 +2718,7 @@ static void __init serial8250_isa_init_ports(void)
up->mcr_mask = ~ALPHA_KLUDGE_MCR;
up->mcr_force = ALPHA_KLUDGE_MCR;
- up->port.ops = &serial8250_pops;
+ port->ops = &serial8250_pops;
}
if (share_irqs)
@@ -2741,17 +2727,19 @@ static void __init serial8250_isa_init_ports(void)
for (i = 0, up = serial8250_ports;
i < ARRAY_SIZE(old_serial_port) && i < nr_uarts;
i++, up++) {
- up->port.iobase = old_serial_port[i].port;
- up->port.irq = irq_canonicalize(old_serial_port[i].irq);
- up->port.irqflags = old_serial_port[i].irqflags;
- up->port.uartclk = old_serial_port[i].baud_base * 16;
- up->port.flags = old_serial_port[i].flags;
- up->port.hub6 = old_serial_port[i].hub6;
- up->port.membase = old_serial_port[i].iomem_base;
- up->port.iotype = old_serial_port[i].io_type;
- up->port.regshift = old_serial_port[i].iomem_reg_shift;
- set_io_from_upio(&up->port);
- up->port.irqflags |= irqflag;
+ struct uart_port *port = &up->port;
+
+ port->iobase = old_serial_port[i].port;
+ port->irq = irq_canonicalize(old_serial_port[i].irq);
+ port->irqflags = old_serial_port[i].irqflags;
+ port->uartclk = old_serial_port[i].baud_base * 16;
+ port->flags = old_serial_port[i].flags;
+ port->hub6 = old_serial_port[i].hub6;
+ port->membase = old_serial_port[i].iomem_base;
+ port->iotype = old_serial_port[i].io_type;
+ port->regshift = old_serial_port[i].iomem_reg_shift;
+ set_io_from_upio(port);
+ port->irqflags |= irqflag;
if (serial8250_isa_config != NULL)
serial8250_isa_config(i, &up->port, &up->capabilities);
@@ -2799,7 +2787,7 @@ static void serial8250_console_putchar(struct uart_port *port, int ch)
container_of(port, struct uart_8250_port, port);
wait_for_xmitr(up, UART_LSR_THRE);
- serial_out(up, UART_TX, ch);
+ serial_port_out(port, UART_TX, ch);
}
/*
@@ -2812,6 +2800,7 @@ static void
serial8250_console_write(struct console *co, const char *s, unsigned int count)
{
struct uart_8250_port *up = &serial8250_ports[co->index];
+ struct uart_port *port = &up->port;
unsigned long flags;
unsigned int ier;
int locked = 1;
@@ -2819,32 +2808,32 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
touch_nmi_watchdog();
local_irq_save(flags);
- if (up->port.sysrq) {
+ if (port->sysrq) {
/* serial8250_handle_irq() already took the lock */
locked = 0;
} else if (oops_in_progress) {
- locked = spin_trylock(&up->port.lock);
+ locked = spin_trylock(&port->lock);
} else
- spin_lock(&up->port.lock);
+ spin_lock(&port->lock);
/*
* First save the IER then disable the interrupts
*/
- ier = serial_in(up, UART_IER);
+ ier = serial_port_in(port, UART_IER);
if (up->capabilities & UART_CAP_UUE)
- serial_out(up, UART_IER, UART_IER_UUE);
+ serial_port_out(port, UART_IER, UART_IER_UUE);
else
- serial_out(up, UART_IER, 0);
+ serial_port_out(port, UART_IER, 0);
- uart_console_write(&up->port, s, count, serial8250_console_putchar);
+ uart_console_write(port, s, count, serial8250_console_putchar);
/*
* Finally, wait for transmitter to become empty
* and restore the IER
*/
wait_for_xmitr(up, BOTH_EMPTY);
- serial_out(up, UART_IER, ier);
+ serial_port_out(port, UART_IER, ier);
/*
* The receive handling will happen properly because the
@@ -2857,7 +2846,7 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
serial8250_modem_status(up);
if (locked)
- spin_unlock(&up->port.lock);
+ spin_unlock(&port->lock);
local_irq_restore(flags);
}
@@ -3002,17 +2991,18 @@ void serial8250_suspend_port(int line)
void serial8250_resume_port(int line)
{
struct uart_8250_port *up = &serial8250_ports[line];
+ struct uart_port *port = &up->port;
if (up->capabilities & UART_NATSEMI) {
/* Ensure it's still in high speed mode */
- serial_outp(up, UART_LCR, 0xE0);
+ serial_port_out(port, UART_LCR, 0xE0);
ns16550a_goto_highspeed(up);
- serial_outp(up, UART_LCR, 0);
- up->port.uartclk = 921600*16;
+ serial_port_out(port, UART_LCR, 0);
+ port->uartclk = 921600*16;
}
- uart_resume_port(&serial8250_reg, &up->port);
+ uart_resume_port(&serial8250_reg, port);
}
/*
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-15 01:22:26 +0000