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Merge branch 'parisc' from /home/kyle/repos/parisc-2.6.git

Browse source 
Conflicts:

	arch/parisc/hpux/sys_hpux.c
	arch/parisc/mm/ioremap.c
This commit is contained in:
Kyle McMartin 2007-02-17 00:18:23 -05:00
commit e7b3ca0854
30 changed files with 310 additions and 358 deletions
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167
drivers/serial/mux.c
View file

@ -51,7 +51,11 @@
#define MUX_NR 256
static unsigned int port_cnt __read_mostly;
static struct uart_port mux_ports[MUX_NR];
struct mux_port {
struct uart_port port;
int enabled;
};
static struct mux_port mux_ports[MUX_NR];
static struct uart_driver mux_driver = {
.owner = THIS_MODULE,
@ -66,7 +70,36 @@ static struct timer_list mux_timer;
#define UART_PUT_CHAR(p, c) __raw_writel((c), (p)->membase + IO_DATA_REG_OFFSET)
#define UART_GET_FIFO_CNT(p) __raw_readl((p)->membase + IO_DCOUNT_REG_OFFSET)
#define GET_MUX_PORTS(iodc_data) ((((iodc_data)[4] & 0xf0) >> 4) * 8) + 8
/**
* get_mux_port_count - Get the number of available ports on the Mux.
* @dev: The parisc device.
*
* This function is used to determine the number of ports the Mux
* supports. The IODC data reports the number of ports the Mux
* can support, but there are cases where not all the Mux ports
* are connected. This function can override the IODC and
* return the true port count.
*/
static int __init get_mux_port_count(struct parisc_device *dev)
{
int status;
u8 iodc_data[32];
unsigned long bytecnt;
/* If this is the built-in Mux for the K-Class (Eole CAP/MUX),
* we only need to allocate resources for 1 port since the
* other 7 ports are not connected.
*/
if(dev->id.hversion == 0x15)
return 1;
status = pdc_iodc_read(&bytecnt, dev->hpa.start, 0, iodc_data, 32);
BUG_ON(status != PDC_OK);
/* Return the number of ports specified in the iodc data. */
return ((((iodc_data)[4] & 0xf0) >> 4) * 8) + 8;
}
/**
* mux_tx_empty - Check if the transmitter fifo is empty.
@ -250,7 +283,7 @@ static void mux_read(struct uart_port *port)
*/
static int mux_startup(struct uart_port *port)
{
mod_timer(&mux_timer, jiffies + MUX_POLL_DELAY);
mux_ports[port->line].enabled = 1;
return 0;
}
@ -262,6 +295,7 @@ static int mux_startup(struct uart_port *port)
*/
static void mux_shutdown(struct uart_port *port)
{
mux_ports[port->line].enabled = 0;
}
/**
@ -319,7 +353,7 @@ static int mux_request_port(struct uart_port *port)
* @port: Ptr to the uart_port.
* @type: Bitmask of required configurations.
*
* Perform any autoconfiguration steps for the port. This functino is
* Perform any autoconfiguration steps for the port. This function is
* called if the UPF_BOOT_AUTOCONF flag is specified for the port.
* [Note: This is required for now because of a bug in the Serial core.
* rmk has already submitted a patch to linus, should be available for
@ -357,11 +391,11 @@ static void mux_poll(unsigned long unused)
int i;
for(i = 0; i < port_cnt; ++i) {
if(!mux_ports[i].info)
if(!mux_ports[i].enabled)
continue;
mux_read(&mux_ports[i]);
mux_write(&mux_ports[i]);
mux_read(&mux_ports[i].port);
mux_write(&mux_ports[i].port);
}
mod_timer(&mux_timer, jiffies + MUX_POLL_DELAY);
@ -371,8 +405,17 @@ static void mux_poll(unsigned long unused)
#ifdef CONFIG_SERIAL_MUX_CONSOLE
static void mux_console_write(struct console *co, const char *s, unsigned count)
{
while(count--)
pdc_iodc_putc(*s++);
/* Wait until the FIFO drains. */
while(UART_GET_FIFO_CNT(&mux_ports[0].port))
udelay(1);
while(count--) {
if(*s == '\n') {
UART_PUT_CHAR(&mux_ports[0].port, '\r');
}
UART_PUT_CHAR(&mux_ports[0].port, *s++);
}
}
static int mux_console_setup(struct console *co, char *options)
@ -428,19 +471,14 @@ static struct uart_ops mux_pops = {
*/
static int __init mux_probe(struct parisc_device *dev)
{
int i, status, ports;
u8 iodc_data[32];
unsigned long bytecnt;
struct uart_port *port;
int i, status;
status = pdc_iodc_read(&bytecnt, dev->hpa.start, 0, iodc_data, 32);
if(status != PDC_OK) {
printk(KERN_ERR "Serial mux: Unable to read IODC.\n");
return 1;
}
int port_count = get_mux_port_count(dev);
printk(KERN_INFO "Serial mux driver (%d ports) Revision: 0.6\n", port_count);
ports = GET_MUX_PORTS(iodc_data);
printk(KERN_INFO "Serial mux driver (%d ports) Revision: 0.3\n", ports);
dev_set_drvdata(&dev->dev, (void *)(long)port_count);
request_mem_region(dev->hpa.start + MUX_OFFSET,
port_count * MUX_LINE_OFFSET, "Mux");
if(!port_cnt) {
mux_driver.cons = MUX_CONSOLE;
@ -450,13 +488,10 @@ static int __init mux_probe(struct parisc_device *dev)
printk(KERN_ERR "Serial mux: Unable to register driver.\n");
return 1;
}
init_timer(&mux_timer);
mux_timer.function = mux_poll;
}
for(i = 0; i < ports; ++i, ++port_cnt) {
port = &mux_ports[port_cnt];
for(i = 0; i < port_count; ++i, ++port_cnt) {
struct uart_port *port = &mux_ports[port_cnt].port;
port->iobase = 0;
port->mapbase = dev->hpa.start + MUX_OFFSET +
(i * MUX_LINE_OFFSET);
@ -477,27 +512,73 @@ static int __init mux_probe(struct parisc_device *dev)
*/
port->timeout = HZ / 50;
spin_lock_init(&port->lock);
status = uart_add_one_port(&mux_driver, port);
BUG_ON(status);
}
#ifdef CONFIG_SERIAL_MUX_CONSOLE
register_console(&mux_console);
#endif
return 0;
}
static int __devexit mux_remove(struct parisc_device *dev)
{
int i, j;
int port_count = (long)dev_get_drvdata(&dev->dev);
/* Find Port 0 for this card in the mux_ports list. */
for(i = 0; i < port_cnt; ++i) {
if(mux_ports[i].port.mapbase == dev->hpa.start + MUX_OFFSET)
break;
}
BUG_ON(i + port_count > port_cnt);
/* Release the resources associated with each port on the device. */
for(j = 0; j < port_count; ++j, ++i) {
struct uart_port *port = &mux_ports[i].port;
uart_remove_one_port(&mux_driver, port);
if(port->membase)
iounmap(port->membase);
}
release_mem_region(dev->hpa.start + MUX_OFFSET, port_count * MUX_LINE_OFFSET);
return 0;
}
/* Hack. This idea was taken from the 8250_gsc.c on how to properly order
* the serial port detection in the proper order. The idea is we always
* want the builtin mux to be detected before addin mux cards, so we
* specifically probe for the builtin mux cards first.
*
* This table only contains the parisc_device_id of known builtin mux
* devices. All other mux cards will be detected by the generic mux_tbl.
*/
static struct parisc_device_id builtin_mux_tbl[] = {
{ HPHW_A_DIRECT, HVERSION_REV_ANY_ID, 0x15, 0x0000D }, /* All K-class */
{ HPHW_A_DIRECT, HVERSION_REV_ANY_ID, 0x44, 0x0000D }, /* E35, E45, and E55 */
{ 0, }
};
static struct parisc_device_id mux_tbl[] = {
{ HPHW_A_DIRECT, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0000D },
{ 0, }
};
MODULE_DEVICE_TABLE(parisc, builtin_mux_tbl);
MODULE_DEVICE_TABLE(parisc, mux_tbl);
static struct parisc_driver builtin_serial_mux_driver = {
.name = "builtin_serial_mux",
.id_table = builtin_mux_tbl,
.probe = mux_probe,
.remove = __devexit_p(mux_remove),
};
static struct parisc_driver serial_mux_driver = {
.name = "serial_mux",
.id_table = mux_tbl,
.probe = mux_probe,
.remove = __devexit_p(mux_remove),
};
/**
@ -507,7 +588,21 @@ static struct parisc_driver serial_mux_driver = {
*/
static int __init mux_init(void)
{
return register_parisc_driver(&serial_mux_driver);
register_parisc_driver(&builtin_serial_mux_driver);
register_parisc_driver(&serial_mux_driver);
if(port_cnt > 0) {
/* Start the Mux timer */
init_timer(&mux_timer);
mux_timer.function = mux_poll;
mod_timer(&mux_timer, jiffies + MUX_POLL_DELAY);
#ifdef CONFIG_SERIAL_MUX_CONSOLE
register_console(&mux_console);
#endif
}
return 0;
}
/**
@ -517,14 +612,16 @@ static int __init mux_init(void)
*/
static void __exit mux_exit(void)
{
int i;
for (i = 0; i < port_cnt; i++) {
uart_remove_one_port(&mux_driver, &mux_ports[i]);
if (mux_ports[i].membase)
iounmap(mux_ports[i].membase);
/* Delete the Mux timer. */
if(port_cnt > 0) {
del_timer(&mux_timer);
#ifdef CONFIG_SERIAL_MUX_CONSOLE
unregister_console(&mux_console);
#endif
}
unregister_parisc_driver(&builtin_serial_mux_driver);
unregister_parisc_driver(&serial_mux_driver);
uart_unregister_driver(&mux_driver);
}