summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/serial/8250_acpi.c183
-rw-r--r--drivers/serial/Kconfig9
-rw-r--r--drivers/serial/Makefile1
-rw-r--r--drivers/serial/amba-pl010.c110
4 files changed, 50 insertions, 253 deletions
diff --git a/drivers/serial/8250_acpi.c b/drivers/serial/8250_acpi.c
deleted file mode 100644
index 809f89ab965..00000000000
--- a/drivers/serial/8250_acpi.c
+++ /dev/null
@@ -1,183 +0,0 @@
-/*
- * Copyright (c) 2002-2003 Matthew Wilcox for Hewlett-Packard
- * Copyright (C) 2004 Hewlett-Packard Co
- * Bjorn Helgaas <bjorn.helgaas@hp.com>
- *
- * 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.
- */
-
-#include <linux/acpi.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/serial_core.h>
-
-#include <acpi/acpi_bus.h>
-
-#include <asm/io.h>
-
-#include "8250.h"
-
-struct serial_private {
- int line;
-};
-
-static acpi_status acpi_serial_mmio(struct uart_port *port,
- struct acpi_resource_address64 *addr)
-{
- port->mapbase = addr->minimum;
- port->iotype = UPIO_MEM;
- port->flags |= UPF_IOREMAP;
- return AE_OK;
-}
-
-static acpi_status acpi_serial_port(struct uart_port *port,
- struct acpi_resource_io *io)
-{
- if (io->address_length) {
- port->iobase = io->minimum;
- port->iotype = UPIO_PORT;
- } else
- printk(KERN_ERR "%s: zero-length IO port range?\n", __FUNCTION__);
- return AE_OK;
-}
-
-static acpi_status acpi_serial_ext_irq(struct uart_port *port,
- struct acpi_resource_extended_irq *ext_irq)
-{
- int rc;
-
- if (ext_irq->interrupt_count > 0) {
- rc = acpi_register_gsi(ext_irq->interrupts[0],
- ext_irq->triggering, ext_irq->polarity);
- if (rc < 0)
- return AE_ERROR;
- port->irq = rc;
- }
- return AE_OK;
-}
-
-static acpi_status acpi_serial_irq(struct uart_port *port,
- struct acpi_resource_irq *irq)
-{
- int rc;
-
- if (irq->interrupt_count > 0) {
- rc = acpi_register_gsi(irq->interrupts[0],
- irq->triggering, irq->polarity);
- if (rc < 0)
- return AE_ERROR;
- port->irq = rc;
- }
- return AE_OK;
-}
-
-static acpi_status acpi_serial_resource(struct acpi_resource *res, void *data)
-{
- struct uart_port *port = (struct uart_port *) data;
- struct acpi_resource_address64 addr;
- acpi_status status;
-
- status = acpi_resource_to_address64(res, &addr);
- if (ACPI_SUCCESS(status))
- return acpi_serial_mmio(port, &addr);
- else if (res->type == ACPI_RESOURCE_TYPE_IO)
- return acpi_serial_port(port, &res->data.io);
- else if (res->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ)
- return acpi_serial_ext_irq(port, &res->data.extended_irq);
- else if (res->type == ACPI_RESOURCE_TYPE_IRQ)
- return acpi_serial_irq(port, &res->data.irq);
- return AE_OK;
-}
-
-static int acpi_serial_add(struct acpi_device *device)
-{
- struct serial_private *priv;
- acpi_status status;
- struct uart_port port;
- int result;
-
- memset(&port, 0, sizeof(struct uart_port));
-
- port.uartclk = 1843200;
- port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF;
-
- priv = kmalloc(sizeof(struct serial_private), GFP_KERNEL);
- if (!priv) {
- result = -ENOMEM;
- goto fail;
- }
- memset(priv, 0, sizeof(*priv));
-
- status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
- acpi_serial_resource, &port);
- if (ACPI_FAILURE(status)) {
- result = -ENODEV;
- goto fail;
- }
-
- if (!port.mapbase && !port.iobase) {
- printk(KERN_ERR "%s: no iomem or port address in %s _CRS\n",
- __FUNCTION__, device->pnp.bus_id);
- result = -ENODEV;
- goto fail;
- }
-
- priv->line = serial8250_register_port(&port);
- if (priv->line < 0) {
- printk(KERN_WARNING "Couldn't register serial port %s: %d\n",
- device->pnp.bus_id, priv->line);
- result = -ENODEV;
- goto fail;
- }
-
- acpi_driver_data(device) = priv;
- return 0;
-
-fail:
- kfree(priv);
-
- return result;
-}
-
-static int acpi_serial_remove(struct acpi_device *device, int type)
-{
- struct serial_private *priv;
-
- if (!device || !acpi_driver_data(device))
- return -EINVAL;
-
- priv = acpi_driver_data(device);
- serial8250_unregister_port(priv->line);
- kfree(priv);
-
- return 0;
-}
-
-static struct acpi_driver acpi_serial_driver = {
- .name = "serial",
- .class = "",
- .ids = "PNP0501",
- .ops = {
- .add = acpi_serial_add,
- .remove = acpi_serial_remove,
- },
-};
-
-static int __init acpi_serial_init(void)
-{
- return acpi_bus_register_driver(&acpi_serial_driver);
-}
-
-static void __exit acpi_serial_exit(void)
-{
- acpi_bus_unregister_driver(&acpi_serial_driver);
-}
-
-module_init(acpi_serial_init);
-module_exit(acpi_serial_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Generic 8250/16x50 ACPI serial driver");
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index c66ef96c71b..ceb3697bf84 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -77,14 +77,6 @@ config SERIAL_8250_CS
If unsure, say N.
-config SERIAL_8250_ACPI
- bool "8250/16550 device discovery via ACPI namespace"
- default y if IA64
- depends on ACPI && SERIAL_8250
- ---help---
- If you wish to enable serial port discovery via the ACPI
- namespace, say Y here. If unsure, say N.
-
config SERIAL_8250_NR_UARTS
int "Maximum number of 8250/16550 serial ports"
depends on SERIAL_8250
@@ -827,6 +819,7 @@ config SERIAL_ICOM
tristate "IBM Multiport Serial Adapter"
depends on PCI && (PPC_ISERIES || PPC_PSERIES)
select SERIAL_CORE
+ select FW_LOADER
help
This driver is for a family of multiport serial adapters
including 2 port RVX, 2 port internal modem, 4 port internal
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 50c221af9e6..a3a4323d9c8 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -5,7 +5,6 @@
#
serial-8250-y :=
-serial-8250-$(CONFIG_SERIAL_8250_ACPI) += 8250_acpi.o
serial-8250-$(CONFIG_PNP) += 8250_pnp.o
serial-8250-$(CONFIG_GSC) += 8250_gsc.o
serial-8250-$(CONFIG_PCI) += 8250_pci.o
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
index e04d5e82d9a..127d6cd5de7 100644
--- a/drivers/serial/amba-pl010.c
+++ b/drivers/serial/amba-pl010.c
@@ -62,26 +62,8 @@
#define AMBA_ISR_PASS_LIMIT 256
-/*
- * Access macros for the AMBA UARTs
- */
-#define UART_GET_INT_STATUS(p) readb((p)->membase + UART010_IIR)
-#define UART_PUT_ICR(p, c) writel((c), (p)->membase + UART010_ICR)
-#define UART_GET_FR(p) readb((p)->membase + UART01x_FR)
-#define UART_GET_CHAR(p) readb((p)->membase + UART01x_DR)
-#define UART_PUT_CHAR(p, c) writel((c), (p)->membase + UART01x_DR)
-#define UART_GET_RSR(p) readb((p)->membase + UART01x_RSR)
-#define UART_GET_CR(p) readb((p)->membase + UART010_CR)
-#define UART_PUT_CR(p,c) writel((c), (p)->membase + UART010_CR)
-#define UART_GET_LCRL(p) readb((p)->membase + UART010_LCRL)
-#define UART_PUT_LCRL(p,c) writel((c), (p)->membase + UART010_LCRL)
-#define UART_GET_LCRM(p) readb((p)->membase + UART010_LCRM)
-#define UART_PUT_LCRM(p,c) writel((c), (p)->membase + UART010_LCRM)
-#define UART_GET_LCRH(p) readb((p)->membase + UART010_LCRH)
-#define UART_PUT_LCRH(p,c) writel((c), (p)->membase + UART010_LCRH)
#define UART_RX_DATA(s) (((s) & UART01x_FR_RXFE) == 0)
#define UART_TX_READY(s) (((s) & UART01x_FR_TXFF) == 0)
-#define UART_TX_EMPTY(p) ((UART_GET_FR(p) & UART01x_FR_TMSK) == 0)
#define UART_DUMMY_RSR_RX /*256*/0
#define UART_PORT_SIZE 64
@@ -110,36 +92,36 @@ static void pl010_stop_tx(struct uart_port *port)
{
unsigned int cr;
- cr = UART_GET_CR(port);
+ cr = readb(port->membase + UART010_CR);
cr &= ~UART010_CR_TIE;
- UART_PUT_CR(port, cr);
+ writel(cr, port->membase + UART010_CR);
}
static void pl010_start_tx(struct uart_port *port)
{
unsigned int cr;
- cr = UART_GET_CR(port);
+ cr = readb(port->membase + UART010_CR);
cr |= UART010_CR_TIE;
- UART_PUT_CR(port, cr);
+ writel(cr, port->membase + UART010_CR);
}
static void pl010_stop_rx(struct uart_port *port)
{
unsigned int cr;
- cr = UART_GET_CR(port);
+ cr = readb(port->membase + UART010_CR);
cr &= ~(UART010_CR_RIE | UART010_CR_RTIE);
- UART_PUT_CR(port, cr);
+ writel(cr, port->membase + UART010_CR);
}
static void pl010_enable_ms(struct uart_port *port)
{
unsigned int cr;
- cr = UART_GET_CR(port);
+ cr = readb(port->membase + UART010_CR);
cr |= UART010_CR_MSIE;
- UART_PUT_CR(port, cr);
+ writel(cr, port->membase + UART010_CR);
}
static void
@@ -152,9 +134,9 @@ pl010_rx_chars(struct uart_port *port)
struct tty_struct *tty = port->info->tty;
unsigned int status, ch, flag, rsr, max_count = 256;
- status = UART_GET_FR(port);
+ status = readb(port->membase + UART01x_FR);
while (UART_RX_DATA(status) && max_count--) {
- ch = UART_GET_CHAR(port);
+ ch = readb(port->membase + UART01x_DR);
flag = TTY_NORMAL;
port->icount.rx++;
@@ -163,7 +145,7 @@ pl010_rx_chars(struct uart_port *port)
* Note that the error handling code is
* out of the main execution path
*/
- rsr = UART_GET_RSR(port) | UART_DUMMY_RSR_RX;
+ rsr = readb(port->membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
if (unlikely(rsr & UART01x_RSR_ANY)) {
if (rsr & UART01x_RSR_BE) {
rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
@@ -193,7 +175,7 @@ pl010_rx_chars(struct uart_port *port)
uart_insert_char(port, rsr, UART01x_RSR_OE, ch, flag);
ignore_char:
- status = UART_GET_FR(port);
+ status = readb(port->membase + UART01x_FR);
}
tty_flip_buffer_push(tty);
return;
@@ -205,7 +187,7 @@ static void pl010_tx_chars(struct uart_port *port)
int count;
if (port->x_char) {
- UART_PUT_CHAR(port, port->x_char);
+ writel(port->x_char, port->membase + UART01x_DR);
port->icount.tx++;
port->x_char = 0;
return;
@@ -217,7 +199,7 @@ static void pl010_tx_chars(struct uart_port *port)
count = port->fifosize >> 1;
do {
- UART_PUT_CHAR(port, xmit->buf[xmit->tail]);
+ writel(xmit->buf[xmit->tail], port->membase + UART01x_DR);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++;
if (uart_circ_empty(xmit))
@@ -236,9 +218,9 @@ static void pl010_modem_status(struct uart_port *port)
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int status, delta;
- UART_PUT_ICR(&uap->port, 0);
+ writel(0, uap->port.membase + UART010_ICR);
- status = UART_GET_FR(&uap->port) & UART01x_FR_MODEM_ANY;
+ status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
delta = status ^ uap->old_status;
uap->old_status = status;
@@ -266,7 +248,7 @@ static irqreturn_t pl010_int(int irq, void *dev_id, struct pt_regs *regs)
spin_lock(&port->lock);
- status = UART_GET_INT_STATUS(port);
+ status = readb(port->membase + UART010_IIR);
if (status) {
do {
if (status & (UART010_IIR_RTIS | UART010_IIR_RIS))
@@ -283,7 +265,7 @@ static irqreturn_t pl010_int(int irq, void *dev_id, struct pt_regs *regs)
if (pass_counter-- == 0)
break;
- status = UART_GET_INT_STATUS(port);
+ status = readb(port->membase + UART010_IIR);
} while (status & (UART010_IIR_RTIS | UART010_IIR_RIS |
UART010_IIR_TIS));
handled = 1;
@@ -296,7 +278,7 @@ static irqreturn_t pl010_int(int irq, void *dev_id, struct pt_regs *regs)
static unsigned int pl010_tx_empty(struct uart_port *port)
{
- return UART_GET_FR(port) & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT;
+ return readb(port->membase + UART01x_FR) & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT;
}
static unsigned int pl010_get_mctrl(struct uart_port *port)
@@ -304,7 +286,7 @@ static unsigned int pl010_get_mctrl(struct uart_port *port)
unsigned int result = 0;
unsigned int status;
- status = UART_GET_FR(port);
+ status = readb(port->membase + UART01x_FR);
if (status & UART01x_FR_DCD)
result |= TIOCM_CAR;
if (status & UART01x_FR_DSR)
@@ -340,12 +322,12 @@ static void pl010_break_ctl(struct uart_port *port, int break_state)
unsigned int lcr_h;
spin_lock_irqsave(&port->lock, flags);
- lcr_h = UART_GET_LCRH(port);
+ lcr_h = readb(port->membase + UART010_LCRH);
if (break_state == -1)
lcr_h |= UART01x_LCRH_BRK;
else
lcr_h &= ~UART01x_LCRH_BRK;
- UART_PUT_LCRH(port, lcr_h);
+ writel(lcr_h, port->membase + UART010_LCRH);
spin_unlock_irqrestore(&port->lock, flags);
}
@@ -364,13 +346,13 @@ static int pl010_startup(struct uart_port *port)
/*
* initialise the old status of the modem signals
*/
- uap->old_status = UART_GET_FR(port) & UART01x_FR_MODEM_ANY;
+ uap->old_status = readb(port->membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
/*
* Finally, enable interrupts
*/
- UART_PUT_CR(port, UART01x_CR_UARTEN | UART010_CR_RIE |
- UART010_CR_RTIE);
+ writel(UART01x_CR_UARTEN | UART010_CR_RIE | UART010_CR_RTIE,
+ port->membase + UART010_CR);
return 0;
}
@@ -385,11 +367,12 @@ static void pl010_shutdown(struct uart_port *port)
/*
* disable all interrupts, disable the port
*/
- UART_PUT_CR(port, 0);
+ writel(0, port->membase + UART010_CR);
/* disable break condition and fifos */
- UART_PUT_LCRH(port, UART_GET_LCRH(port) &
- ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN));
+ writel(readb(port->membase + UART010_LCRH) &
+ ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN),
+ port->membase + UART010_LCRH);
}
static void
@@ -466,25 +449,25 @@ pl010_set_termios(struct uart_port *port, struct termios *termios,
port->ignore_status_mask |= UART_DUMMY_RSR_RX;
/* first, disable everything */
- old_cr = UART_GET_CR(port) & ~UART010_CR_MSIE;
+ old_cr = readb(port->membase + UART010_CR) & ~UART010_CR_MSIE;
if (UART_ENABLE_MS(port, termios->c_cflag))
old_cr |= UART010_CR_MSIE;
- UART_PUT_CR(port, 0);
+ writel(0, port->membase + UART010_CR);
/* Set baud rate */
quot -= 1;
- UART_PUT_LCRM(port, ((quot & 0xf00) >> 8));
- UART_PUT_LCRL(port, (quot & 0xff));
+ writel((quot & 0xf00) >> 8, port->membase + UART010_LCRM);
+ writel(quot & 0xff, port->membase + UART010_LCRL);
/*
* ----------v----------v----------v----------v-----
* NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L
* ----------^----------^----------^----------^-----
*/
- UART_PUT_LCRH(port, lcr_h);
- UART_PUT_CR(port, old_cr);
+ writel(lcr_h, port->membase + UART010_LCRH);
+ writel(old_cr, port->membase + UART010_CR);
spin_unlock_irqrestore(&port->lock, flags);
}
@@ -593,9 +576,13 @@ static struct uart_amba_port amba_ports[UART_NR] = {
static void pl010_console_putchar(struct uart_port *port, int ch)
{
- while (!UART_TX_READY(UART_GET_FR(port)))
+ unsigned int status;
+
+ do {
+ status = readb(port->membase + UART01x_FR);
barrier();
- UART_PUT_CHAR(port, ch);
+ } while (!UART_TX_READY(status));
+ writel(ch, port->membase + UART01x_DR);
}
static void
@@ -607,8 +594,8 @@ pl010_console_write(struct console *co, const char *s, unsigned int count)
/*
* First save the CR then disable the interrupts
*/
- old_cr = UART_GET_CR(port);
- UART_PUT_CR(port, UART01x_CR_UARTEN);
+ old_cr = readb(port->membase + UART010_CR);
+ writel(UART01x_CR_UARTEN, port->membase + UART010_CR);
uart_console_write(port, s, count, pl010_console_putchar);
@@ -617,18 +604,19 @@ pl010_console_write(struct console *co, const char *s, unsigned int count)
* and restore the TCR
*/
do {
- status = UART_GET_FR(port);
+ status = readb(port->membase + UART01x_FR);
+ barrier();
} while (status & UART01x_FR_BUSY);
- UART_PUT_CR(port, old_cr);
+ writel(old_cr, port->membase + UART010_CR);
}
static void __init
pl010_console_get_options(struct uart_port *port, int *baud,
int *parity, int *bits)
{
- if (UART_GET_CR(port) & UART01x_CR_UARTEN) {
+ if (readb(port->membase + UART010_CR) & UART01x_CR_UARTEN) {
unsigned int lcr_h, quot;
- lcr_h = UART_GET_LCRH(port);
+ lcr_h = readb(port->membase + UART010_LCRH);
*parity = 'n';
if (lcr_h & UART01x_LCRH_PEN) {
@@ -643,7 +631,7 @@ pl010_console_get_options(struct uart_port *port, int *baud,
else
*bits = 8;
- quot = UART_GET_LCRL(port) | UART_GET_LCRM(port) << 8;
+ quot = readb(port->membase + UART010_LCRL) | readb(port->membase + UART010_LCRM) << 8;
*baud = port->uartclk / (16 * (quot + 1));
}
}
generated by cgit (git 2.34.1) at 2024-11-18 20:53:51 +0000