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[PATCH] Altix: rs422 support for ioc4 serial driver

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Add rs422 support to the Altix ioc4 serial driver.

Signed-off-by: Patrick Gefre <pfg@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Pat Gefre 2006-03-25 03:08:07 -08:00 committed by Linus Torvalds
parent fe9bab2df9
commit 64b9137943
1 changed files with 250 additions and 139 deletions
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389
drivers/serial/ioc4_serial.c
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@ -3,7 +3,7 @@
* License. See the file "COPYING" in the main directory of this archive * License. See the file "COPYING" in the main directory of this archive
* for more details. * for more details.
* *
* Copyright (C) 2003-2005 Silicon Graphics, Inc. All Rights Reserved. * Copyright (C) 2003-2006 Silicon Graphics, Inc. All Rights Reserved.
*/ */
@ -323,9 +323,12 @@ static unsigned int Num_of_ioc4_cards;
#define IOC4_FIFO_CHARS 255 #define IOC4_FIFO_CHARS 255
/* Device name we're using */ /* Device name we're using */
#define DEVICE_NAME "ttyIOC" #define DEVICE_NAME_RS232 "ttyIOC"
#define DEVICE_MAJOR 204 #define DEVICE_NAME_RS422 "ttyAIOC"
#define DEVICE_MINOR 50 #define DEVICE_MAJOR 204
#define DEVICE_MINOR_RS232 50
#define DEVICE_MINOR_RS422 84
/* register offsets */ /* register offsets */
#define IOC4_SERIAL_OFFSET 0x300 #define IOC4_SERIAL_OFFSET 0x300
@ -341,10 +344,8 @@ static unsigned int Num_of_ioc4_cards;
#define MAX_BAUD_SUPPORTED 115200 #define MAX_BAUD_SUPPORTED 115200
/* protocol types supported */ /* protocol types supported */
enum sio_proto { #define PROTO_RS232 3
PROTO_RS232, #define PROTO_RS422 7
PROTO_RS422
};
/* Notification types */ /* Notification types */
#define N_DATA_READY 0x01 #define N_DATA_READY 0x01
@ -395,11 +396,17 @@ enum sio_proto {
/* /*
* This is the entry saved by the driver - one per card * This is the entry saved by the driver - one per card
*/ */
#define UART_PORT_MIN 0
#define UART_PORT_RS232 UART_PORT_MIN
#define UART_PORT_RS422 1
#define UART_PORT_COUNT 2 /* one for each mode */
struct ioc4_control { struct ioc4_control {
int ic_irq; int ic_irq;
struct { struct {
/* uart ports are allocated here */ /* uart ports are allocated here - 1 for rs232, 1 for rs422 */
struct uart_port icp_uart_port; struct uart_port icp_uart_port[UART_PORT_COUNT];
/* Handy reference material */ /* Handy reference material */
struct ioc4_port *icp_port; struct ioc4_port *icp_port;
} ic_port[IOC4_NUM_SERIAL_PORTS]; } ic_port[IOC4_NUM_SERIAL_PORTS];
@ -443,7 +450,9 @@ struct ioc4_soft {
/* Local port info for each IOC4 serial ports */ /* Local port info for each IOC4 serial ports */
struct ioc4_port { struct ioc4_port {
struct uart_port *ip_port; struct uart_port *ip_port; /* current active port ptr */
/* Ptrs for all ports */
struct uart_port *ip_all_ports[UART_PORT_COUNT];
/* Back ptrs for this port */ /* Back ptrs for this port */
struct ioc4_control *ip_control; struct ioc4_control *ip_control;
struct pci_dev *ip_pdev; struct pci_dev *ip_pdev;
@ -502,6 +511,9 @@ struct ioc4_port {
#define DCD_ON 0x02 #define DCD_ON 0x02
#define LOWAT_WRITTEN 0x04 #define LOWAT_WRITTEN 0x04
#define READ_ABORTED 0x08 #define READ_ABORTED 0x08
#define PORT_ACTIVE 0x10
#define PORT_INACTIVE 0 /* This is the value when "off" */
/* Since each port has different register offsets and bitmasks /* Since each port has different register offsets and bitmasks
* for everything, we'll store those that we need in tables so we * for everything, we'll store those that we need in tables so we
@ -623,6 +635,23 @@ struct ring_buffer {
static void receive_chars(struct uart_port *); static void receive_chars(struct uart_port *);
static void handle_intr(void *arg, uint32_t sio_ir); static void handle_intr(void *arg, uint32_t sio_ir);
/*
* port_is_active - determines if this port is currently active
* @port: ptr to soft struct for this port
* @uart_port: uart port to test for
*/
static inline int port_is_active(struct ioc4_port *port,
struct uart_port *uart_port)
{
if (port) {
if ((port->ip_flags & PORT_ACTIVE)
&& (port->ip_port == uart_port))
return 1;
}
return 0;
}
/** /**
* write_ireg - write the interrupt regs * write_ireg - write the interrupt regs
* @ioc4_soft: ptr to soft struct for this port * @ioc4_soft: ptr to soft struct for this port
@ -708,19 +737,33 @@ static int set_baud(struct ioc4_port *port, int baud)
/** /**
* get_ioc4_port - given a uart port, return the control structure * get_ioc4_port - given a uart port, return the control structure
* @port: uart port * @port: uart port
* @set: set this port as current
*/ */
static struct ioc4_port *get_ioc4_port(struct uart_port *the_port) static struct ioc4_port *get_ioc4_port(struct uart_port *the_port, int set)
{ {
struct ioc4_driver_data *idd = dev_get_drvdata(the_port->dev); struct ioc4_driver_data *idd = dev_get_drvdata(the_port->dev);
struct ioc4_control *control = idd->idd_serial_data; struct ioc4_control *control = idd->idd_serial_data;
int ii; struct ioc4_port *port;
int port_num, port_type;
if (control) { if (control) {
for ( ii = 0; ii < IOC4_NUM_SERIAL_PORTS; ii++ ) { for ( port_num = 0; port_num < IOC4_NUM_SERIAL_PORTS;
if (!control->ic_port[ii].icp_port) port_num++ ) {
port = control->ic_port[port_num].icp_port;
if (!port)
continue; continue;
if (the_port == control->ic_port[ii].icp_port->ip_port) for (port_type = UART_PORT_MIN;
return control->ic_port[ii].icp_port; port_type < UART_PORT_COUNT;
port_type++) {
if (the_port == port->ip_all_ports
[port_type]) {
/* set local copy */
if (set) {
port->ip_port = the_port;
}
return port;
}
}
} }
} }
return NULL; return NULL;
@ -946,6 +989,7 @@ intr_connect(struct ioc4_soft *soft, int type,
* @arg: handler arg * @arg: handler arg
* @regs: registers * @regs: registers
*/ */
static irqreturn_t ioc4_intr(int irq, void *arg, struct pt_regs *regs) static irqreturn_t ioc4_intr(int irq, void *arg, struct pt_regs *regs)
{ {
struct ioc4_soft *soft; struct ioc4_soft *soft;
@ -953,7 +997,7 @@ static irqreturn_t ioc4_intr(int irq, void *arg, struct pt_regs *regs)
int xx, num_intrs = 0; int xx, num_intrs = 0;
int intr_type; int intr_type;
int handled = 0; int handled = 0;
struct ioc4_intr_info *ii; struct ioc4_intr_info *intr_info;
soft = arg; soft = arg;
for (intr_type = 0; intr_type < IOC4_NUM_INTR_TYPES; intr_type++) { for (intr_type = 0; intr_type < IOC4_NUM_INTR_TYPES; intr_type++) {
@ -966,13 +1010,13 @@ static irqreturn_t ioc4_intr(int irq, void *arg, struct pt_regs *regs)
* which interrupt bits are set. * which interrupt bits are set.
*/ */
for (xx = 0; xx < num_intrs; xx++) { for (xx = 0; xx < num_intrs; xx++) {
ii = &soft->is_intr_type[intr_type].is_intr_info[xx]; intr_info = &soft->is_intr_type[intr_type].is_intr_info[xx];
if ((this_mir = this_ir & ii->sd_bits)) { if ((this_mir = this_ir & intr_info->sd_bits)) {
/* Disable owned interrupts, call handler */ /* Disable owned interrupts, call handler */
handled++; handled++;
write_ireg(soft, ii->sd_bits, IOC4_W_IEC, write_ireg(soft, intr_info->sd_bits, IOC4_W_IEC,
intr_type); intr_type);
ii->sd_intr(ii->sd_info, this_mir); intr_info->sd_intr(intr_info->sd_info, this_mir);
this_ir &= ~this_mir; this_ir &= ~this_mir;
} }
} }
@ -980,7 +1024,6 @@ static irqreturn_t ioc4_intr(int irq, void *arg, struct pt_regs *regs)
#ifdef DEBUG_INTERRUPTS #ifdef DEBUG_INTERRUPTS
{ {
struct ioc4_misc_regs __iomem *mem = soft->is_ioc4_misc_addr; struct ioc4_misc_regs __iomem *mem = soft->is_ioc4_misc_addr;
spinlock_t *lp = &soft->is_ir_lock;
unsigned long flag; unsigned long flag;
spin_lock_irqsave(&soft->is_ir_lock, flag); spin_lock_irqsave(&soft->is_ir_lock, flag);
@ -1177,7 +1220,7 @@ static inline int local_open(struct ioc4_port *port)
{ {
int spiniter = 0; int spiniter = 0;
port->ip_flags = 0; port->ip_flags = PORT_ACTIVE;
/* Pause the DMA interface if necessary */ /* Pause the DMA interface if necessary */
if (port->ip_sscr & IOC4_SSCR_DMA_EN) { if (port->ip_sscr & IOC4_SSCR_DMA_EN) {
@ -1187,6 +1230,7 @@ static inline int local_open(struct ioc4_port *port)
& IOC4_SSCR_PAUSE_STATE) == 0) { & IOC4_SSCR_PAUSE_STATE) == 0) {
spiniter++; spiniter++;
if (spiniter > MAXITER) { if (spiniter > MAXITER) {
port->ip_flags = PORT_INACTIVE;
return -1; return -1;
} }
} }
@ -1506,14 +1550,13 @@ static int set_notification(struct ioc4_port *port, int mask, int set_on)
/** /**
* set_mcr - set the master control reg * set_mcr - set the master control reg
* @the_port: port to use * @the_port: port to use
* @set: set ?
* @mask1: mcr mask * @mask1: mcr mask
* @mask2: shadow mask * @mask2: shadow mask
*/ */
static inline int set_mcr(struct uart_port *the_port, int set, static inline int set_mcr(struct uart_port *the_port,
int mask1, int mask2) int mask1, int mask2)
{ {
struct ioc4_port *port = get_ioc4_port(the_port); struct ioc4_port *port = get_ioc4_port(the_port, 0);
uint32_t shadow; uint32_t shadow;
int spiniter = 0; int spiniter = 0;
char mcr; char mcr;
@ -1536,13 +1579,9 @@ static inline int set_mcr(struct uart_port *the_port, int set,
mcr = (shadow & 0xff000000) >> 24; mcr = (shadow & 0xff000000) >> 24;
/* Set new value */ /* Set new value */
if (set) { mcr |= mask1;
mcr |= mask1; shadow |= mask2;
shadow |= mask2;
} else {
mcr &= ~mask1;
shadow &= ~mask2;
}
writeb(mcr, &port->ip_uart_regs->i4u_mcr); writeb(mcr, &port->ip_uart_regs->i4u_mcr);
writel(shadow, &port->ip_serial_regs->shadow); writel(shadow, &port->ip_serial_regs->shadow);
@ -1558,7 +1597,7 @@ static inline int set_mcr(struct uart_port *the_port, int set,
* @port: port to use * @port: port to use
* @proto: protocol to use * @proto: protocol to use
*/ */
static int ioc4_set_proto(struct ioc4_port *port, enum sio_proto proto) static int ioc4_set_proto(struct ioc4_port *port, int proto)
{ {
struct hooks *hooks = port->ip_hooks; struct hooks *hooks = port->ip_hooks;
@ -1589,7 +1628,7 @@ static void transmit_chars(struct uart_port *the_port)
int result; int result;
char *start; char *start;
struct tty_struct *tty; struct tty_struct *tty;
struct ioc4_port *port = get_ioc4_port(the_port); struct ioc4_port *port = get_ioc4_port(the_port, 0);
struct uart_info *info; struct uart_info *info;
if (!the_port) if (!the_port)
@ -1645,7 +1684,7 @@ static void
ioc4_change_speed(struct uart_port *the_port, ioc4_change_speed(struct uart_port *the_port,
struct termios *new_termios, struct termios *old_termios) struct termios *new_termios, struct termios *old_termios)
{ {
struct ioc4_port *port = get_ioc4_port(the_port); struct ioc4_port *port = get_ioc4_port(the_port, 0);
int baud, bits; int baud, bits;
unsigned cflag; unsigned cflag;
int new_parity = 0, new_parity_enable = 0, new_stop = 0, new_data = 8; int new_parity = 0, new_parity_enable = 0, new_stop = 0, new_data = 8;
@ -1752,7 +1791,7 @@ static inline int ic4_startup_local(struct uart_port *the_port)
if (!the_port) if (!the_port)
return -1; return -1;
port = get_ioc4_port(the_port); port = get_ioc4_port(the_port, 0);
if (!port) if (!port)
return -1; return -1;
@ -1760,6 +1799,9 @@ static inline int ic4_startup_local(struct uart_port *the_port)
local_open(port); local_open(port);
/* set the protocol - mapbase has the port type */
ioc4_set_proto(port, the_port->mapbase);
/* set the speed of the serial port */ /* set the speed of the serial port */
ioc4_change_speed(the_port, info->tty->termios, (struct termios *)0); ioc4_change_speed(the_port, info->tty->termios, (struct termios *)0);
@ -1768,17 +1810,17 @@ static inline int ic4_startup_local(struct uart_port *the_port)
/* /*
* ioc4_cb_output_lowat - called when the output low water mark is hit * ioc4_cb_output_lowat - called when the output low water mark is hit
* @port: port to output * @the_port: port to output
*/ */
static void ioc4_cb_output_lowat(struct ioc4_port *port) static void ioc4_cb_output_lowat(struct uart_port *the_port)
{ {
unsigned long pflags; unsigned long pflags;
/* ip_lock is set on the call here */ /* ip_lock is set on the call here */
if (port->ip_port) { if (the_port) {
spin_lock_irqsave(&port->ip_port->lock, pflags); spin_lock_irqsave(&the_port->lock, pflags);
transmit_chars(port->ip_port); transmit_chars(the_port);
spin_unlock_irqrestore(&port->ip_port->lock, pflags); spin_unlock_irqrestore(&the_port->lock, pflags);
} }
} }
@ -1923,7 +1965,7 @@ static void handle_intr(void *arg, uint32_t sio_ir)
&port->ip_mem->sio_ir.raw); &port->ip_mem->sio_ir.raw);
if (port->ip_notify & N_OUTPUT_LOWAT) if (port->ip_notify & N_OUTPUT_LOWAT)
ioc4_cb_output_lowat(port); ioc4_cb_output_lowat(port->ip_port);
} }
/* Handle tx_mt. Must come after tx_explicit. */ /* Handle tx_mt. Must come after tx_explicit. */
@ -1936,7 +1978,7 @@ static void handle_intr(void *arg, uint32_t sio_ir)
* So send the notification now. * So send the notification now.
*/ */
if (port->ip_notify & N_OUTPUT_LOWAT) { if (port->ip_notify & N_OUTPUT_LOWAT) {
ioc4_cb_output_lowat(port); ioc4_cb_output_lowat(port->ip_port);
/* We need to reload the sio_ir since the lowat /* We need to reload the sio_ir since the lowat
* call may have caused another write to occur, * call may have caused another write to occur,
@ -2023,7 +2065,7 @@ static inline int do_read(struct uart_port *the_port, unsigned char *buf,
int len) int len)
{ {
int prod_ptr, cons_ptr, total; int prod_ptr, cons_ptr, total;
struct ioc4_port *port = get_ioc4_port(the_port); struct ioc4_port *port = get_ioc4_port(the_port, 0);
struct ring *inring; struct ring *inring;
struct ring_entry *entry; struct ring_entry *entry;
struct hooks *hooks = port->ip_hooks; struct hooks *hooks = port->ip_hooks;
@ -2335,17 +2377,27 @@ static void receive_chars(struct uart_port *the_port)
*/ */
static const char *ic4_type(struct uart_port *the_port) static const char *ic4_type(struct uart_port *the_port)
{ {
return "SGI IOC4 Serial"; if (the_port->mapbase == PROTO_RS232)
return "SGI IOC4 Serial [rs232]";
else
return "SGI IOC4 Serial [rs422]";
} }
/** /**
* ic4_tx_empty - Is the transmitter empty? We pretend we're always empty * ic4_tx_empty - Is the transmitter empty?
* @port: Port to operate on (we ignore since we always return 1) * @port: Port to operate on
* *
*/ */
static unsigned int ic4_tx_empty(struct uart_port *the_port) static unsigned int ic4_tx_empty(struct uart_port *the_port)
{ {
return 1; struct ioc4_port *port = get_ioc4_port(the_port, 0);
unsigned int ret = 0;
if (port_is_active(port, the_port)) {
if (readl(&port->ip_serial_regs->shadow) & IOC4_SHADOW_TEMT)
ret = TIOCSER_TEMT;
}
return ret;
} }
/** /**
@ -2355,6 +2407,10 @@ static unsigned int ic4_tx_empty(struct uart_port *the_port)
*/ */
static void ic4_stop_tx(struct uart_port *the_port) static void ic4_stop_tx(struct uart_port *the_port)
{ {
struct ioc4_port *port = get_ioc4_port(the_port, 0);
if (port_is_active(port, the_port))
set_notification(port, N_OUTPUT_LOWAT, 0);
} }
/** /**
@ -2377,11 +2433,12 @@ static void ic4_shutdown(struct uart_port *the_port)
struct ioc4_port *port; struct ioc4_port *port;
struct uart_info *info; struct uart_info *info;
port = get_ioc4_port(the_port); port = get_ioc4_port(the_port, 0);
if (!port) if (!port)
return; return;
info = the_port->info; info = the_port->info;
port->ip_port = NULL;
wake_up_interruptible(&info->delta_msr_wait); wake_up_interruptible(&info->delta_msr_wait);
@ -2390,6 +2447,7 @@ static void ic4_shutdown(struct uart_port *the_port)
spin_lock_irqsave(&the_port->lock, port_flags); spin_lock_irqsave(&the_port->lock, port_flags);
set_notification(port, N_ALL, 0); set_notification(port, N_ALL, 0);
port->ip_flags = PORT_INACTIVE;
spin_unlock_irqrestore(&the_port->lock, port_flags); spin_unlock_irqrestore(&the_port->lock, port_flags);
} }
@ -2402,6 +2460,11 @@ static void ic4_shutdown(struct uart_port *the_port)
static void ic4_set_mctrl(struct uart_port *the_port, unsigned int mctrl) static void ic4_set_mctrl(struct uart_port *the_port, unsigned int mctrl)
{ {
unsigned char mcr = 0; unsigned char mcr = 0;
struct ioc4_port *port;
port = get_ioc4_port(the_port, 0);
if (!port_is_active(port, the_port))
return;
if (mctrl & TIOCM_RTS) if (mctrl & TIOCM_RTS)
mcr |= UART_MCR_RTS; mcr |= UART_MCR_RTS;
@ -2414,7 +2477,7 @@ static void ic4_set_mctrl(struct uart_port *the_port, unsigned int mctrl)
if (mctrl & TIOCM_LOOP) if (mctrl & TIOCM_LOOP)
mcr |= UART_MCR_LOOP; mcr |= UART_MCR_LOOP;
set_mcr(the_port, 1, mcr, IOC4_SHADOW_DTR); set_mcr(the_port, mcr, IOC4_SHADOW_DTR);
} }
/** /**
@ -2424,11 +2487,11 @@ static void ic4_set_mctrl(struct uart_port *the_port, unsigned int mctrl)
*/ */
static unsigned int ic4_get_mctrl(struct uart_port *the_port) static unsigned int ic4_get_mctrl(struct uart_port *the_port)
{ {
struct ioc4_port *port = get_ioc4_port(the_port); struct ioc4_port *port = get_ioc4_port(the_port, 0);
uint32_t shadow; uint32_t shadow;
unsigned int ret = 0; unsigned int ret = 0;
if (!port) if (!port_is_active(port, the_port))
return 0; return 0;
shadow = readl(&port->ip_serial_regs->shadow); shadow = readl(&port->ip_serial_regs->shadow);
@ -2448,9 +2511,9 @@ static unsigned int ic4_get_mctrl(struct uart_port *the_port)
*/ */
static void ic4_start_tx(struct uart_port *the_port) static void ic4_start_tx(struct uart_port *the_port)
{ {
struct ioc4_port *port = get_ioc4_port(the_port); struct ioc4_port *port = get_ioc4_port(the_port, 0);
if (port) { if (port_is_active(port, the_port)) {
set_notification(port, N_OUTPUT_LOWAT, 1); set_notification(port, N_OUTPUT_LOWAT, 1);
enable_intrs(port, port->ip_hooks->intr_tx_mt); enable_intrs(port, port->ip_hooks->intr_tx_mt);
} }
@ -2467,7 +2530,7 @@ static void ic4_break_ctl(struct uart_port *the_port, int break_state)
} }
/** /**
* ic4_startup - Start up the serial port - always return 0 (We're always on) * ic4_startup - Start up the serial port
* @port: Port to operate on * @port: Port to operate on
* *
*/ */
@ -2479,17 +2542,16 @@ static int ic4_startup(struct uart_port *the_port)
struct uart_info *info; struct uart_info *info;
unsigned long port_flags; unsigned long port_flags;
if (!the_port) { if (!the_port)
return -ENODEV; return -ENODEV;
} port = get_ioc4_port(the_port, 1);
port = get_ioc4_port(the_port); if (!port)
if (!port) {
return -ENODEV; return -ENODEV;
}
info = the_port->info; info = the_port->info;
control = port->ip_control; control = port->ip_control;
if (!control) { if (!control) {
port->ip_port = NULL;
return -ENODEV; return -ENODEV;
} }
@ -2551,28 +2613,104 @@ static struct uart_ops ioc4_ops = {
* Boot-time initialization code * Boot-time initialization code
*/ */
static struct uart_driver ioc4_uart = { static struct uart_driver ioc4_uart_rs232 = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.driver_name = "ioc4_serial", .driver_name = "ioc4_serial_rs232",
.dev_name = DEVICE_NAME, .dev_name = DEVICE_NAME_RS232,
.major = DEVICE_MAJOR, .major = DEVICE_MAJOR,
.minor = DEVICE_MINOR, .minor = DEVICE_MINOR_RS232,
.nr = IOC4_NUM_CARDS * IOC4_NUM_SERIAL_PORTS, .nr = IOC4_NUM_CARDS * IOC4_NUM_SERIAL_PORTS,
}; };
static struct uart_driver ioc4_uart_rs422 = {
.owner = THIS_MODULE,
.driver_name = "ioc4_serial_rs422",
.dev_name = DEVICE_NAME_RS422,
.major = DEVICE_MAJOR,
.minor = DEVICE_MINOR_RS422,
.nr = IOC4_NUM_CARDS * IOC4_NUM_SERIAL_PORTS,
};
/** /**
* ioc4_serial_core_attach - register with serial core * ioc4_serial_remove_one - detach function
*
* @idd: IOC4 master module data for this IOC4
*/
static int ioc4_serial_remove_one(struct ioc4_driver_data *idd)
{
int port_num, port_type;
struct ioc4_control *control;
struct uart_port *the_port;
struct ioc4_port *port;
struct ioc4_soft *soft;
control = idd->idd_serial_data;
for (port_num = 0; port_num < IOC4_NUM_SERIAL_PORTS; port_num++) {
for (port_type = UART_PORT_MIN;
port_type < UART_PORT_COUNT;
port_type++) {
the_port = &control->ic_port[port_num].icp_uart_port
[port_type];
if (the_port) {
switch (port_type) {
case UART_PORT_RS422:
uart_remove_one_port(&ioc4_uart_rs422,
the_port);
break;
default:
case UART_PORT_RS232:
uart_remove_one_port(&ioc4_uart_rs232,
the_port);
break;
}
}
}
port = control->ic_port[port_num].icp_port;
/* we allocate in pairs */
if (!(port_num & 1) && port) {
pci_free_consistent(port->ip_pdev,
TOTAL_RING_BUF_SIZE,
port->ip_cpu_ringbuf,
port->ip_dma_ringbuf);
kfree(port);
}
}
soft = control->ic_soft;
if (soft) {
free_irq(control->ic_irq, soft);
if (soft->is_ioc4_serial_addr) {
release_region((unsigned long)
soft->is_ioc4_serial_addr,
sizeof(struct ioc4_serial));
}
kfree(soft);
}
kfree(control);
idd->idd_serial_data = NULL;
return 0;
}
/**
* ioc4_serial_core_attach_rs232 - register with serial core
* This is done during pci probing * This is done during pci probing
* @pdev: handle for this card * @pdev: handle for this card
*/ */
static inline int static inline int
ioc4_serial_core_attach(struct pci_dev *pdev) ioc4_serial_core_attach(struct pci_dev *pdev, int port_type)
{ {
struct ioc4_port *port; struct ioc4_port *port;
struct uart_port *the_port; struct uart_port *the_port;
struct ioc4_driver_data *idd = pci_get_drvdata(pdev); struct ioc4_driver_data *idd = pci_get_drvdata(pdev);
struct ioc4_control *control = idd->idd_serial_data; struct ioc4_control *control = idd->idd_serial_data;
int ii; int port_num;
int port_type_idx;
struct uart_driver *u_driver;
DPRINT_CONFIG(("%s: attach pdev 0x%p - control 0x%p\n", DPRINT_CONFIG(("%s: attach pdev 0x%p - control 0x%p\n",
__FUNCTION__, pdev, (void *)control)); __FUNCTION__, pdev, (void *)control));
@ -2580,28 +2718,36 @@ ioc4_serial_core_attach(struct pci_dev *pdev)
if (!control) if (!control)
return -ENODEV; return -ENODEV;
/* once around for each port on this card */ port_type_idx = (port_type == PROTO_RS232) ? UART_PORT_RS232
for (ii = 0; ii < IOC4_NUM_SERIAL_PORTS; ii++) { : UART_PORT_RS422;
the_port = &control->ic_port[ii].icp_uart_port;
port = control->ic_port[ii].icp_port;
port->ip_port = the_port;
DPRINT_CONFIG(("%s: attach the_port 0x%p / port 0x%p\n", u_driver = (port_type == PROTO_RS232) ? &ioc4_uart_rs232
: &ioc4_uart_rs422;
/* once around for each port on this card */
for (port_num = 0; port_num < IOC4_NUM_SERIAL_PORTS; port_num++) {
the_port = &control->ic_port[port_num].icp_uart_port
[port_type_idx];
port = control->ic_port[port_num].icp_port;
port->ip_all_ports[port_type_idx] = the_port;
DPRINT_CONFIG(("%s: attach the_port 0x%p / port 0x%p : type %s\n",
__FUNCTION__, (void *)the_port, __FUNCTION__, (void *)the_port,
(void *)port)); (void *)port,
port_type == PROTO_RS232 ? "rs232" : "rs422"));
/* membase, iobase and mapbase just need to be non-0 */ /* membase, iobase and mapbase just need to be non-0 */
the_port->membase = (unsigned char __iomem *)1; the_port->membase = (unsigned char __iomem *)1;
the_port->iobase = (pdev->bus->number << 16) | ii; the_port->iobase = (pdev->bus->number << 16) | port_num;
the_port->line = (Num_of_ioc4_cards << 2) | ii; the_port->line = (Num_of_ioc4_cards << 2) | port_num;
the_port->mapbase = 1; the_port->mapbase = port_type;
the_port->type = PORT_16550A; the_port->type = PORT_16550A;
the_port->fifosize = IOC4_FIFO_CHARS; the_port->fifosize = IOC4_FIFO_CHARS;
the_port->ops = &ioc4_ops; the_port->ops = &ioc4_ops;
the_port->irq = control->ic_irq; the_port->irq = control->ic_irq;
the_port->dev = &pdev->dev; the_port->dev = &pdev->dev;
spin_lock_init(&the_port->lock); spin_lock_init(&the_port->lock);
if (uart_add_one_port(&ioc4_uart, the_port) < 0) { if (uart_add_one_port(u_driver, the_port) < 0) {
printk(KERN_WARNING printk(KERN_WARNING
"%s: unable to add port %d bus %d\n", "%s: unable to add port %d bus %d\n",
__FUNCTION__, the_port->line, pdev->bus->number); __FUNCTION__, the_port->line, pdev->bus->number);
@ -2610,8 +2756,6 @@ ioc4_serial_core_attach(struct pci_dev *pdev)
("IOC4 serial port %d irq = %d, bus %d\n", ("IOC4 serial port %d irq = %d, bus %d\n",
the_port->line, the_port->irq, pdev->bus->number)); the_port->line, the_port->irq, pdev->bus->number));
} }
/* all ports are rs232 for now */
ioc4_set_proto(port, PROTO_RS232);
} }
return 0; return 0;
} }
@ -2631,7 +2775,8 @@ ioc4_serial_attach_one(struct ioc4_driver_data *idd)
int ret = 0; int ret = 0;
DPRINT_CONFIG(("%s (0x%p, 0x%p)\n", __FUNCTION__, idd->idd_pdev, idd->idd_pci_id)); DPRINT_CONFIG(("%s (0x%p, 0x%p)\n", __FUNCTION__, idd->idd_pdev,
idd->idd_pci_id));
/* request serial registers */ /* request serial registers */
tmp_addr1 = idd->idd_bar0 + IOC4_SERIAL_OFFSET; tmp_addr1 = idd->idd_bar0 + IOC4_SERIAL_OFFSET;
@ -2653,11 +2798,11 @@ ioc4_serial_attach_one(struct ioc4_driver_data *idd)
goto out2; goto out2;
} }
DPRINT_CONFIG(("%s : mem 0x%p, serial 0x%p\n", DPRINT_CONFIG(("%s : mem 0x%p, serial 0x%p\n",
__FUNCTION__, (void *)idd->idd_misc_regs, (void *)serial)); __FUNCTION__, (void *)idd->idd_misc_regs,
(void *)serial));
/* Get memory for the new card */ /* Get memory for the new card */
control = kmalloc(sizeof(struct ioc4_control) * IOC4_NUM_SERIAL_PORTS, control = kmalloc(sizeof(struct ioc4_control), GFP_KERNEL);
GFP_KERNEL);
if (!control) { if (!control) {
printk(KERN_WARNING "ioc4_attach_one" printk(KERN_WARNING "ioc4_attach_one"
@ -2702,7 +2847,7 @@ ioc4_serial_attach_one(struct ioc4_driver_data *idd)
/* Hook up interrupt handler */ /* Hook up interrupt handler */
if (!request_irq(idd->idd_pdev->irq, ioc4_intr, SA_SHIRQ, if (!request_irq(idd->idd_pdev->irq, ioc4_intr, SA_SHIRQ,
"sgi-ioc4serial", (void *)soft)) { "sgi-ioc4serial", soft)) {
control->ic_irq = idd->idd_pdev->irq; control->ic_irq = idd->idd_pdev->irq;
} else { } else {
printk(KERN_WARNING printk(KERN_WARNING
@ -2713,16 +2858,21 @@ ioc4_serial_attach_one(struct ioc4_driver_data *idd)
if (ret) if (ret)
goto out4; goto out4;
/* register port with the serial core */ /* register port with the serial core - 1 rs232, 1 rs422 */
if ((ret = ioc4_serial_core_attach(idd->idd_pdev))) if ((ret = ioc4_serial_core_attach(idd->idd_pdev, PROTO_RS232)))
goto out4; goto out4;
if ((ret = ioc4_serial_core_attach(idd->idd_pdev, PROTO_RS422)))
goto out5;
Num_of_ioc4_cards++; Num_of_ioc4_cards++;
return ret; return ret;
/* error exits that give back resources */ /* error exits that give back resources */
out5:
ioc4_serial_remove_one(idd);
out4: out4:
kfree(soft); kfree(soft);
out3: out3:
@ -2735,52 +2885,6 @@ out1:
} }
/**
* ioc4_serial_remove_one - detach function
*
* @idd: IOC4 master module data for this IOC4
*/
int ioc4_serial_remove_one(struct ioc4_driver_data *idd)
{
int ii;
struct ioc4_control *control;
struct uart_port *the_port;
struct ioc4_port *port;
struct ioc4_soft *soft;
control = idd->idd_serial_data;
for (ii = 0; ii < IOC4_NUM_SERIAL_PORTS; ii++) {
the_port = &control->ic_port[ii].icp_uart_port;
if (the_port) {
uart_remove_one_port(&ioc4_uart, the_port);
}
port = control->ic_port[ii].icp_port;
if (!(ii & 1) && port) {
pci_free_consistent(port->ip_pdev,
TOTAL_RING_BUF_SIZE,
(void *)port->ip_cpu_ringbuf,
port->ip_dma_ringbuf);
kfree(port);
}
}
soft = control->ic_soft;
if (soft) {
free_irq(control->ic_irq, (void *)soft);
if (soft->is_ioc4_serial_addr) {
release_region((unsigned long)
soft->is_ioc4_serial_addr,
sizeof(struct ioc4_serial));
}
kfree(soft);
}
kfree(control);
idd->idd_serial_data = NULL;
return 0;
}
static struct ioc4_submodule ioc4_serial_submodule = { static struct ioc4_submodule ioc4_serial_submodule = {
.is_name = "IOC4_serial", .is_name = "IOC4_serial",
.is_owner = THIS_MODULE, .is_owner = THIS_MODULE,
@ -2796,9 +2900,15 @@ int ioc4_serial_init(void)
int ret; int ret;
/* register with serial core */ /* register with serial core */
if ((ret = uart_register_driver(&ioc4_uart)) < 0) { if ((ret = uart_register_driver(&ioc4_uart_rs232)) < 0) {
printk(KERN_WARNING printk(KERN_WARNING
"%s: Couldn't register IOC4 serial driver\n", "%s: Couldn't register rs232 IOC4 serial driver\n",
__FUNCTION__);
return ret;
}
if ((ret = uart_register_driver(&ioc4_uart_rs422)) < 0) {
printk(KERN_WARNING
"%s: Couldn't register rs422 IOC4 serial driver\n",
__FUNCTION__); __FUNCTION__);
return ret; return ret;
} }
@ -2810,7 +2920,8 @@ int ioc4_serial_init(void)
static void __devexit ioc4_serial_exit(void) static void __devexit ioc4_serial_exit(void)
{ {
ioc4_unregister_submodule(&ioc4_serial_submodule); ioc4_unregister_submodule(&ioc4_serial_submodule);
uart_unregister_driver(&ioc4_uart); uart_unregister_driver(&ioc4_uart_rs232);
uart_unregister_driver(&ioc4_uart_rs422);
} }
module_init(ioc4_serial_init); module_init(ioc4_serial_init);