* Theodore Ts'o <tytso@mit.edu>, 2001-Oct-12
*
* Converted to new 2.5.x UART layer.
- * David S. Miller (davem@redhat.com), 2002-Jul-29
+ * David S. Miller (davem@davemloft.net), 2002-Jul-29
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <asm/io.h>
#include <asm/irq.h>
-#include <asm/oplib.h>
-#include <asm/ebus.h>
-#ifdef CONFIG_SPARC64
-#include <asm/isa.h>
-#endif
+#include <asm/prom.h>
+#include <asm/of_device.h>
#if defined(CONFIG_SERIAL_SUNSU_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
/* Probing information. */
enum su_type su_type;
unsigned int type_probed; /* XXX Stupid */
- int port_node;
+ unsigned long reg_size;
#ifdef CONFIG_SERIO
- struct serio *serio;
+ struct serio serio;
int serio_open;
#endif
};
/* Stop-A is handled by drivers/char/keyboard.c now. */
if (up->su_type == SU_PORT_KBD) {
#ifdef CONFIG_SERIO
- serio_interrupt(up->serio, ch, 0, regs);
+ serio_interrupt(&up->serio, ch, 0, regs);
#endif
} else if (up->su_type == SU_PORT_MS) {
int ret = suncore_mouse_baud_detection(ch, is_break);
case 0:
#ifdef CONFIG_SERIO
- serio_interrupt(up->serio, ch, 0, regs);
+ serio_interrupt(&up->serio, ch, 0, regs);
#endif
break;
};
if (up->su_type != SU_PORT_PORT) {
retval = request_irq(up->port.irq, sunsu_kbd_ms_interrupt,
- SA_SHIRQ, su_typev[up->su_type], up);
+ IRQF_SHARED, su_typev[up->su_type], up);
} else {
retval = request_irq(up->port.irq, sunsu_serial_interrupt,
- SA_SHIRQ, su_typev[up->su_type], up);
+ IRQF_SHARED, su_typev[up->su_type], up);
}
if (retval) {
printk("su: Cannot register IRQ %d\n", up->port.irq);
{
unsigned char status1, status2, scratch, scratch2, scratch3;
unsigned char save_lcr, save_mcr;
- struct linux_ebus_device *dev = NULL;
- struct linux_ebus *ebus;
-#ifdef CONFIG_SPARC64
- struct sparc_isa_bridge *isa_br;
- struct sparc_isa_device *isa_dev;
-#endif
-#ifndef CONFIG_SPARC64
- struct linux_prom_registers reg0;
-#endif
unsigned long flags;
- if (!up->port_node || !up->su_type)
+ if (up->su_type == SU_PORT_NONE)
return;
up->type_probed = PORT_UNKNOWN;
up->port.iotype = UPIO_MEM;
- /*
- * First we look for Ebus-bases su's
- */
- for_each_ebus(ebus) {
- for_each_ebusdev(dev, ebus) {
- if (dev->prom_node->node == up->port_node) {
- /*
- * The EBus is broken on sparc; it delivers
- * virtual addresses in resources. Oh well...
- * This is correct on sparc64, though.
- */
- up->port.membase = (char *) dev->resource[0].start;
- /*
- * This is correct on both architectures.
- */
- up->port.mapbase = dev->resource[0].start;
- up->port.irq = dev->irqs[0];
- goto ebus_done;
- }
- }
- }
-
-#ifdef CONFIG_SPARC64
- for_each_isa(isa_br) {
- for_each_isadev(isa_dev, isa_br) {
- if (isa_dev->prom_node->node == up->port_node) {
- /* Same on sparc64. Cool architecure... */
- up->port.membase = (char *) isa_dev->resource.start;
- up->port.mapbase = isa_dev->resource.start;
- up->port.irq = isa_dev->irq;
- goto ebus_done;
- }
- }
- }
-#endif
-
-#ifdef CONFIG_SPARC64
- /*
- * Not on Ebus, bailing.
- */
- return;
-#else
- /*
- * Not on Ebus, must be OBIO.
- */
- if (prom_getproperty(up->port_node, "reg",
- (char *)®0, sizeof(reg0)) == -1) {
- prom_printf("sunsu: no \"reg\" property\n");
- return;
- }
- prom_apply_obio_ranges(®0, 1);
- if (reg0.which_io != 0) { /* Just in case... */
- prom_printf("sunsu: bus number nonzero: 0x%x:%x\n",
- reg0.which_io, reg0.phys_addr);
- return;
- }
- up->port.mapbase = reg0.phys_addr;
- if ((up->port.membase = ioremap(reg0.phys_addr, reg0.reg_size)) == 0) {
- prom_printf("sunsu: Cannot map registers.\n");
- return;
- }
-
- /*
- * 0x20 is sun4m thing, Dave Redman heritage.
- * See arch/sparc/kernel/irq.c.
- */
-#define IRQ_4M(n) ((n)|0x20)
-
- /*
- * There is no intr property on MrCoffee, so hardwire it.
- */
- up->port.irq = IRQ_4M(13);
-#endif
-
-ebus_done:
-
spin_lock_irqsave(&up->port.lock, flags);
if (!(up->port.flags & UPF_BUGGY_UART)) {
static struct uart_driver sunsu_reg = {
.owner = THIS_MODULE,
.driver_name = "serial",
- .devfs_name = "tts/",
.dev_name = "ttyS",
.major = TTY_MAJOR,
};
-static int __init sunsu_kbd_ms_init(struct uart_sunsu_port *up, int channel)
+static int __init sunsu_kbd_ms_init(struct uart_sunsu_port *up)
{
int quot, baud;
#ifdef CONFIG_SERIO
struct serio *serio;
#endif
- spin_lock_init(&up->port.lock);
- up->port.line = channel;
- up->port.type = PORT_UNKNOWN;
- up->port.uartclk = (SU_BASE_BAUD * 16);
-
if (up->su_type == SU_PORT_KBD) {
up->cflag = B1200 | CS8 | CLOCAL | CREAD;
baud = 1200;
sunsu_autoconfig(up);
if (up->port.type == PORT_UNKNOWN)
- return -1;
-
- printk(KERN_INFO "su%d at 0x%p (irq = %d) is a %s\n",
- channel,
- up->port.membase, up->port.irq,
- sunsu_type(&up->port));
+ return -ENODEV;
#ifdef CONFIG_SERIO
- up->serio = serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
- if (serio) {
- memset(serio, 0, sizeof(*serio));
-
- serio->port_data = up;
-
- serio->id.type = SERIO_RS232;
- if (up->su_type == SU_PORT_KBD) {
- serio->id.proto = SERIO_SUNKBD;
- strlcpy(serio->name, "sukbd", sizeof(serio->name));
- } else {
- serio->id.proto = SERIO_SUN;
- serio->id.extra = 1;
- strlcpy(serio->name, "sums", sizeof(serio->name));
- }
- strlcpy(serio->phys, (channel == 0 ? "su/serio0" : "su/serio1"),
- sizeof(serio->phys));
-
- serio->write = sunsu_serio_write;
- serio->open = sunsu_serio_open;
- serio->close = sunsu_serio_close;
+ serio = &up->serio;
+ serio->port_data = up;
- serio_register_port(serio);
+ serio->id.type = SERIO_RS232;
+ if (up->su_type == SU_PORT_KBD) {
+ serio->id.proto = SERIO_SUNKBD;
+ strlcpy(serio->name, "sukbd", sizeof(serio->name));
} else {
- printk(KERN_WARNING "su%d: not enough memory for serio port\n",
- channel);
+ serio->id.proto = SERIO_SUN;
+ serio->id.extra = 1;
+ strlcpy(serio->name, "sums", sizeof(serio->name));
}
+ strlcpy(serio->phys,
+ (!(up->port.line & 1) ? "su/serio0" : "su/serio1"),
+ sizeof(serio->phys));
+
+ serio->write = sunsu_serio_write;
+ serio->open = sunsu_serio_open;
+ serio->close = sunsu_serio_close;
+ serio->dev.parent = up->port.dev;
+
+ serio_register_port(serio);
#endif
sunsu_change_speed(&up->port, up->cflag, 0, quot);
* Register console.
*/
-static inline struct console *SUNSU_CONSOLE(void)
+static inline struct console *SUNSU_CONSOLE(int num_uart)
{
int i;
if (con_is_present())
return NULL;
- for (i = 0; i < UART_NR; i++) {
+ for (i = 0; i < num_uart; i++) {
int this_minor = sunsu_reg.minor + i;
if ((this_minor - 64) == (serial_console - 1))
break;
}
- if (i == UART_NR)
- return NULL;
- if (sunsu_ports[i].port_node == 0)
+ if (i == num_uart)
return NULL;
sunsu_cons.index = i;
return &sunsu_cons;
}
#else
-#define SUNSU_CONSOLE() (NULL)
+#define SUNSU_CONSOLE(num_uart) (NULL)
#define sunsu_serial_console_init() do { } while (0)
#endif
-static int __init sunsu_serial_init(void)
+static enum su_type __devinit su_get_type(struct device_node *dp)
{
- int instance, ret, i;
+ struct device_node *ap = of_find_node_by_path("/aliases");
- /* How many instances do we need? */
- instance = 0;
- for (i = 0; i < UART_NR; i++) {
- struct uart_sunsu_port *up = &sunsu_ports[i];
+ if (ap) {
+ char *keyb = of_get_property(ap, "keyboard", NULL);
+ char *ms = of_get_property(ap, "mouse", NULL);
- if (up->su_type == SU_PORT_MS ||
- up->su_type == SU_PORT_KBD)
- continue;
+ if (keyb) {
+ if (dp == of_find_node_by_path(keyb))
+ return SU_PORT_KBD;
+ }
+ if (ms) {
+ if (dp == of_find_node_by_path(ms))
+ return SU_PORT_MS;
+ }
+ }
- spin_lock_init(&up->port.lock);
- up->port.flags |= UPF_BOOT_AUTOCONF;
- up->port.type = PORT_UNKNOWN;
- up->port.uartclk = (SU_BASE_BAUD * 16);
+ return SU_PORT_PORT;
+}
- sunsu_autoconfig(up);
- if (up->port.type == PORT_UNKNOWN)
- continue;
+static int __devinit su_probe(struct of_device *op, const struct of_device_id *match)
+{
+ static int inst;
+ struct device_node *dp = op->node;
+ struct uart_sunsu_port *up;
+ struct resource *rp;
+ int err;
- up->port.line = instance++;
- up->port.ops = &sunsu_pops;
- }
+ if (inst >= UART_NR)
+ return -EINVAL;
- sunsu_reg.minor = sunserial_current_minor;
+ up = &sunsu_ports[inst];
+ up->port.line = inst;
- sunsu_reg.nr = instance;
+ spin_lock_init(&up->port.lock);
- ret = uart_register_driver(&sunsu_reg);
- if (ret < 0)
- return ret;
+ up->su_type = su_get_type(dp);
- sunsu_reg.tty_driver->name_base = sunsu_reg.minor - 64;
+ rp = &op->resource[0];
+ up->port.mapbase = op->resource[0].start;
- sunserial_current_minor += instance;
+ up->reg_size = (rp->end - rp->start) + 1;
+ up->port.membase = of_ioremap(rp, 0, up->reg_size, "su");
+ if (!up->port.membase)
+ return -ENOMEM;
- sunsu_reg.cons = SUNSU_CONSOLE();
+ up->port.irq = op->irqs[0];
- for (i = 0; i < UART_NR; i++) {
- struct uart_sunsu_port *up = &sunsu_ports[i];
+ up->port.dev = &op->dev;
- /* Do not register Keyboard/Mouse lines with UART
- * layer.
- */
- if (up->su_type == SU_PORT_MS ||
- up->su_type == SU_PORT_KBD)
- continue;
+ up->port.type = PORT_UNKNOWN;
+ up->port.uartclk = (SU_BASE_BAUD * 16);
- if (up->port.type == PORT_UNKNOWN)
- continue;
+ err = 0;
+ if (up->su_type == SU_PORT_KBD || up->su_type == SU_PORT_MS) {
+ err = sunsu_kbd_ms_init(up);
+ if (err)
+ goto out_unmap;
- uart_add_one_port(&sunsu_reg, &up->port);
+ return 0;
}
- return 0;
-}
+ up->port.flags |= UPF_BOOT_AUTOCONF;
-static int su_node_ok(int node, char *name, int namelen)
-{
- if (strncmp(name, "su", namelen) == 0 ||
- strncmp(name, "su_pnp", namelen) == 0)
- return 1;
-
- if (strncmp(name, "serial", namelen) == 0) {
- char compat[32];
- int clen;
-
- /* Is it _really_ a 'su' device? */
- clen = prom_getproperty(node, "compatible", compat, sizeof(compat));
- if (clen > 0) {
- if (strncmp(compat, "sab82532", 8) == 0) {
- /* Nope, Siemens serial, not for us. */
- return 0;
- }
- }
- return 1;
- }
+ sunsu_autoconfig(up);
- return 0;
-}
+ err = -ENODEV;
+ if (up->port.type == PORT_UNKNOWN)
+ goto out_unmap;
-#define SU_PROPSIZE 128
+ up->port.ops = &sunsu_pops;
-/*
- * Scan status structure.
- * "prop" is a local variable but it eats stack to keep it in each
- * stack frame of a recursive procedure.
- */
-struct su_probe_scan {
- int msnode, kbnode; /* PROM nodes for mouse and keyboard */
- int msx, kbx; /* minors for mouse and keyboard */
- int devices; /* scan index */
- char prop[SU_PROPSIZE];
-};
+ err = uart_add_one_port(&sunsu_reg, &up->port);
+ if (err)
+ goto out_unmap;
-/*
- * We have several platforms which present 'su' in different parts
- * of the device tree. 'su' may be found under obio, ebus, isa and pci.
- * We walk over the tree and find them wherever PROM hides them.
- */
-static void __init su_probe_any(struct su_probe_scan *t, int sunode)
-{
- struct uart_sunsu_port *up;
- int len;
+ dev_set_drvdata(&op->dev, up);
- if (t->devices >= UART_NR)
- return;
+ inst++;
- for (; sunode != 0; sunode = prom_getsibling(sunode)) {
- len = prom_getproperty(sunode, "name", t->prop, SU_PROPSIZE);
- if (len <= 1)
- continue; /* Broken PROM node */
-
- if (su_node_ok(sunode, t->prop, len)) {
- up = &sunsu_ports[t->devices];
- if (t->kbnode != 0 && sunode == t->kbnode) {
- t->kbx = t->devices;
- up->su_type = SU_PORT_KBD;
- } else if (t->msnode != 0 && sunode == t->msnode) {
- t->msx = t->devices;
- up->su_type = SU_PORT_MS;
- } else {
-#ifdef CONFIG_SPARC64
- /*
- * Do not attempt to use the truncated
- * keyboard/mouse ports as serial ports
- * on Ultras with PC keyboard attached.
- */
- if (prom_getbool(sunode, "mouse"))
- continue;
- if (prom_getbool(sunode, "keyboard"))
- continue;
-#endif
- up->su_type = SU_PORT_PORT;
- }
- up->port_node = sunode;
- ++t->devices;
- } else {
- su_probe_any(t, prom_getchild(sunode));
- }
- }
+ return 0;
+
+out_unmap:
+ of_iounmap(up->port.membase, up->reg_size);
+ return err;
}
-static int __init sunsu_probe(void)
+static int __devexit su_remove(struct of_device *dev)
{
- int node;
- int len;
- struct su_probe_scan scan;
+ struct uart_sunsu_port *up = dev_get_drvdata(&dev->dev);;
- /*
- * First, we scan the tree.
- */
- scan.devices = 0;
- scan.msx = -1;
- scan.kbx = -1;
- scan.kbnode = 0;
- scan.msnode = 0;
+ if (up->su_type == SU_PORT_MS ||
+ up->su_type == SU_PORT_KBD) {
+#ifdef CONFIG_SERIO
+ serio_unregister_port(&up->serio);
+#endif
+ } else if (up->port.type != PORT_UNKNOWN)
+ uart_remove_one_port(&sunsu_reg, &up->port);
- /*
- * Get the nodes for keyboard and mouse from 'aliases'...
- */
- node = prom_getchild(prom_root_node);
- node = prom_searchsiblings(node, "aliases");
- if (node != 0) {
- len = prom_getproperty(node, "keyboard", scan.prop, SU_PROPSIZE);
- if (len > 0) {
- scan.prop[len] = 0;
- scan.kbnode = prom_finddevice(scan.prop);
- }
+ return 0;
+}
- len = prom_getproperty(node, "mouse", scan.prop, SU_PROPSIZE);
- if (len > 0) {
- scan.prop[len] = 0;
- scan.msnode = prom_finddevice(scan.prop);
- }
- }
+static struct of_device_id su_match[] = {
+ {
+ .name = "su",
+ },
+ {
+ .name = "su_pnp",
+ },
+ {
+ .name = "serial",
+ .compatible = "su",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, su_match);
- su_probe_any(&scan, prom_getchild(prom_root_node));
+static struct of_platform_driver su_driver = {
+ .name = "su",
+ .match_table = su_match,
+ .probe = su_probe,
+ .remove = __devexit_p(su_remove),
+};
- /*
- * Second, we process the special case of keyboard and mouse.
- *
- * Currently if we got keyboard and mouse hooked to "su" ports
- * we do not use any possible remaining "su" as a serial port.
- * Thus, we ignore values of .msx and .kbx, then compact ports.
- */
- if (scan.msx != -1 && scan.kbx != -1) {
- sunsu_ports[0].su_type = SU_PORT_MS;
- sunsu_ports[0].port_node = scan.msnode;
- sunsu_kbd_ms_init(&sunsu_ports[0], 0);
+static int num_uart;
- sunsu_ports[1].su_type = SU_PORT_KBD;
- sunsu_ports[1].port_node = scan.kbnode;
- sunsu_kbd_ms_init(&sunsu_ports[1], 1);
+static int __init sunsu_init(void)
+{
+ struct device_node *dp;
+ int err;
- return 0;
+ num_uart = 0;
+ for_each_node_by_name(dp, "su") {
+ if (su_get_type(dp) == SU_PORT_PORT)
+ num_uart++;
}
-
- if (scan.msx != -1 || scan.kbx != -1) {
- printk("sunsu_probe: cannot match keyboard and mouse, confused\n");
- return -ENODEV;
+ for_each_node_by_name(dp, "su_pnp") {
+ if (su_get_type(dp) == SU_PORT_PORT)
+ num_uart++;
+ }
+ for_each_node_by_name(dp, "serial") {
+ if (of_device_is_compatible(dp, "su")) {
+ if (su_get_type(dp) == SU_PORT_PORT)
+ num_uart++;
+ }
}
- if (scan.devices == 0)
- return -ENODEV;
+ if (num_uart) {
+ sunsu_reg.minor = sunserial_current_minor;
+ sunsu_reg.nr = num_uart;
+ err = uart_register_driver(&sunsu_reg);
+ if (err)
+ return err;
+ sunsu_reg.tty_driver->name_base = sunsu_reg.minor - 64;
+ sunserial_current_minor += num_uart;
+ sunsu_reg.cons = SUNSU_CONSOLE(num_uart);
+ }
- /*
- * Console must be initiated after the generic initialization.
- */
- sunsu_serial_init();
+ err = of_register_driver(&su_driver, &of_bus_type);
+ if (err && num_uart)
+ uart_unregister_driver(&sunsu_reg);
- return 0;
+ return err;
}
static void __exit sunsu_exit(void)
{
- int i, saw_uart;
-
- saw_uart = 0;
- for (i = 0; i < UART_NR; i++) {
- struct uart_sunsu_port *up = &sunsu_ports[i];
-
- if (up->su_type == SU_PORT_MS ||
- up->su_type == SU_PORT_KBD) {
-#ifdef CONFIG_SERIO
- if (up->serio) {
- serio_unregister_port(up->serio);
- up->serio = NULL;
- }
-#endif
- } else if (up->port.type != PORT_UNKNOWN) {
- uart_remove_one_port(&sunsu_reg, &up->port);
- saw_uart++;
- }
- }
-
- if (saw_uart)
+ if (num_uart)
uart_unregister_driver(&sunsu_reg);
}
-module_init(sunsu_probe);
+module_init(sunsu_init);
module_exit(sunsu_exit);
+
+MODULE_AUTHOR("Eddie C. Dost, Peter Zaitcev, and David S. Miller");
+MODULE_DESCRIPTION("Sun SU serial port driver");
+MODULE_VERSION("2.0");
MODULE_LICENSE("GPL");
git.samba.org / sfrench / cifs-2.6.git / blobdiff