patch-2.1.101 linux/drivers/acorn/char/serial-card.c

• Lines: 107
• Date: Fri May 8 00:42:38 1998
• Orig file: v2.1.100/linux/drivers/acorn/char/serial-card.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.100/linux/drivers/acorn/char/serial-card.c linux/drivers/acorn/char/serial-card.c
@@ -0,0 +1,106 @@
+/*
+ * linux/arch/arm/drivers/char/serial-module.c
+ *
+ * Copyright (c) 1996 Russell King.
+ *
+ * A generic handler of serial expansion cards that use 16550s or
+ * the like.
+ *
+ * Definitions:
+ *  MY_PRODS		Product numbers to identify this card by
+ *  MY_MANUS		Manufacturer numbers to identify this card by
+ *  MY_NUMPORTS		Number of ports per card
+ *  MY_BAUD_BASE	Baud base for the card
+ *  MY_INIT		Initialisation routine name
+ *  MY_BASE_ADDRESS(ec)	Return base address for ports
+ *  MY_PORT_ADDRESS
+ *	(port,cardaddr)	Return address for port using base address
+ *			from above.
+ *
+ * Changelog:
+ *  30-07-1996	RMK	Created
+ *  22-04-1998	RMK	Removed old register_pre_init_serial
+ */
+#include <linux/module.h>
+#include <linux/serial.h>
+#include <linux/errno.h>
+#include <asm/ecard.h>
+
+#ifndef NUM_SERIALS
+#define NUM_SERIALS	MY_NUMPORTS * MAX_ECARDS
+#endif
+
+#ifdef MODULE
+static int __serial_ports[NUM_SERIALS];
+static int __serial_pcount;
+static struct expansion_card *expcard[MAX_ECARDS];
+#define ADD_ECARD(ec,card) expcard[(card)] = (ec)
+#define ADD_PORT(port) __serial_ports[__serial_pcount++] = (port)
+#undef MY_INIT
+#define MY_INIT init_module
+#else
+#define ADD_ECARD(ec,card)
+#define ADD_PORT(port)
+#endif
+
+static const card_ids serial_cids[] = { MY_CARD_LIST, { 0xffff, 0xffff } };
+
+static inline int serial_register_onedev (unsigned long port, int irq)
+{
+    struct serial_struct req;
+
+    req.baud_base = MY_BAUD_BASE;
+    req.irq = irq;
+    req.port = port;
+
+    return register_serial(&req);
+}
+
+int MY_INIT (void)
+{
+    int card = 0;
+
+    ecard_startfind ();
+
+    do {
+	struct expansion_card *ec;
+	unsigned long cardaddr;
+	int port;
+
+	ec = ecard_find (0, serial_cids);
+	if (!ec)
+	    break;
+
+	cardaddr = MY_BASE_ADDRESS(ec);
+
+	for (port = 0; port < MY_NUMPORTS; port ++) {
+	    int line;
+
+	    line = serial_register_onedev (MY_PORT_ADDRESS(port, cardaddr), ec->irq);
+	    if (line < 0)
+		break;
+	    ADD_PORT(line);
+	}
+
+	if (port) {
+	    ecard_claim (ec);
+	    ADD_ECARD(ec, card);
+	} else
+	    break;
+    } while (++card < MAX_ECARDS);
+    return card ? 0 : -ENODEV;
+}
+
+#ifdef MODULE
+void cleanup_module (void)
+{
+    int i;
+
+    for (i = 0; i < __serial_pcount; i++)
+	unregister_serial (__serial_ports[i]);
+
+    for (i = 0; i < MAX_ECARDS; i++)
+	if (expcard[i])
+	    ecard_release (expcard[i]);
+}
+#endif