New directory and drivers for Parallel Port Bus devices.

Submitted by:	Nicolas Souchu <Nicolas.Souchu@prism.uvsq.fr>

1 files changed, 239 insertions, 0 deletions

diff --git a/sys/dev/ppbus/ppbconf.h b/sys/dev/ppbus/ppbconf.h
new file mode 100644
index 0000000..b10df44
--- /dev/null
+++ b/sys/dev/ppbus/ppbconf.h
@@ -0,0 +1,239 @@
+/*-
+ * Copyright (c) 1997 Nicolas Souchu
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ *
+ */
+#ifndef __PPBCONF_H
+#define __PPBCONF_H
+
+/*
+ * Parallel Port Chipset modes.
+ */
+#define PPB_AUTODETECT	0x0	/* autodetect */
+#define PPB_NIBBLE	0x1	/* standard 4 bit mode */
+#define PPB_PS2		0x2	/* PS/2 byte mode */
+#define PPB_EPP		0x3	/* EPP mode, 32 bit */
+#define PPB_ECP_EPP	0x4	/* ECP in EPP mode */
+#define PPB_ECP_PS2	0x5	/* ECP in PS/2 mode */
+#define PPB_ECP		0x6	/* ECP mode */
+#define PPB_UNKNOWN	0x7	/* the last one */
+
+#define PPB_IS_EPP(mode) (mode == PPB_EPP || mode == PPB_ECP_EPP)
+
+#define PPB_IN_EPP_MODE(dev) (PPB_IS_EPP (ppb_get_mode (dev)))
+
+/*
+ * Parallel Port Chipset control bits.
+ */
+#define STROBE		0x01
+#define AUTOFEED	0x02
+#define nINIT		0x04
+#define SELECTIN	0x08
+#define PCD		0x20
+
+/*
+ * Parallel Port Chipset status bits.
+ */
+#define TIMEOUT		0x01
+#define nFAULT		0x08
+#define SELECT		0x10
+#define ERROR		0x20
+#define nACK		0x40
+#define nBUSY		0x80
+
+/*
+ * Structure to store status information.
+ */
+struct ppb_status {
+	unsigned char status;
+
+	unsigned int timeout:1;
+	unsigned int error:1;
+	unsigned int select:1;
+	unsigned int paper_end:1;
+	unsigned int ack:1;
+	unsigned int busy:1;
+};
+
+/*
+ * How tsleep () is called in ppb_request_bus ().
+ */
+#define PPB_DONTWAIT	0
+#define PPB_NOINTR	0
+#define PPB_WAIT	0x1
+#define PPB_INTR	0x2
+
+struct ppb_data;	/* see below */
+
+/*
+ * Parallel Port Bus Device structure.
+ */
+struct ppb_device {
+
+	int id_unit;			/* unit of the device */
+
+	void (*intr)(int);		/* interrupt handler */
+
+	struct ppb_data *ppb;		/* link to the ppbus */
+
+	LIST_ENTRY(ppb_device)	chain;	/* list of devices on the bus */
+};
+
+/*
+ * Parallel Port Bus Adapter structure.
+ */
+struct ppb_adapter {
+
+	void (*intr_handler)(int);
+	void (*reset_epp_timeout)(int);
+	void (*ecp_sync)(int);
+
+	void (*outsb_epp)(int, char *, int);
+	void (*outsw_epp)(int, char *, int);
+	void (*outsl_epp)(int, char *, int);
+	void (*insb_epp)(int, char *, int);
+	void (*insw_epp)(int, char *, int);
+	void (*insl_epp)(int, char *, int);
+
+	char (*r_dtr)(int);
+	char (*r_str)(int);
+	char (*r_ctr)(int);
+	char (*r_epp)(int);
+	char (*r_ecr)(int);
+	char (*r_fifo)(int);
+
+	void (*w_dtr)(int, char);
+	void (*w_str)(int, char);
+	void (*w_ctr)(int, char);
+	void (*w_epp)(int, char);
+	void (*w_ecr)(int, char);
+	void (*w_fifo)(int, char);
+};
+
+/*
+ * ppb_link structure.
+ */
+struct ppb_link {
+
+	int adapter_unit;			/* unit of the adapter */
+
+	int id_irq;				/* != 0 if irq enabled */
+	int mode;				/* NIBBLE, PS2, EPP, ECP */
+
+#define EPP_1_9		0x0			/* default */
+#define EPP_1_7		0x1
+
+	int epp_protocol;			/* EPP protocol: 0=1.9, 1=1.7 */
+
+	struct ppb_adapter *adapter;		/* link to the ppc adapter */
+	struct ppb_data *ppbus;			/* link to the ppbus */
+};
+
+/*
+ * Parallel Port Bus structure.
+ */
+struct ppb_data {
+
+	struct ppb_link *ppb_link;		/* link to the adapter */
+	struct ppb_device *ppb_owner;		/* device which owns the bus */
+	LIST_HEAD(, ppb_device)	ppb_devs;	/* list of devices on the bus */
+	LIST_ENTRY(ppb_data)	ppb_chain;	/* list of busses */
+};
+
+/*
+ * Parallel Port Bus driver structure.
+ */
+struct ppb_driver 
+{
+    struct ppb_device	*(*probe)(struct ppb_data *ppb);
+    int			(*attach)(struct ppb_device *pdp);
+    char		*name;
+};
+
+extern struct linker_set ppbdriver_set;
+
+extern struct ppb_data *ppb_alloc_bus(void);
+extern int ppb_attachdevs(struct ppb_data *);
+extern int ppb_request_bus(struct ppb_device *, int);
+extern int ppb_release_bus(struct ppb_device *);
+extern void ppb_intr(struct ppb_link *);
+
+extern int ppb_reset_epp_timeout(struct ppb_device *);
+extern int ppb_ecp_sync(struct ppb_device *);
+extern int ppb_get_status(struct ppb_device *, struct ppb_status *);
+extern int ppb_get_mode(struct ppb_device *);
+extern int ppb_get_epp_protocol(struct ppb_device *);
+extern int ppb_get_irq(struct ppb_device *);
+
+/*
+ * These are defined as macros for speedup.
+ */
+#define ppb_outsb_epp(dev,buf,cnt) \
+			(*(dev)->ppb->ppb_link->adapter->outsb_epp) \
+			((dev)->ppb->ppb_link->adapter_unit, buf, cnt)
+#define ppb_outsw_epp(dev,buf,cnt) \
+			(*(dev)->ppb->ppb_link->adapter->outsw_epp) \
+			((dev)->ppb->ppb_link->adapter_unit, buf, cnt)
+#define ppb_outsl_epp(dev,buf,cnt) \
+			(*(dev)->ppb->ppb_link->adapter->outsl_epp) \
+			((dev)->ppb->ppb_link->adapter_unit, buf, cnt)
+#define ppb_insb_epp(dev,buf,cnt) \
+			(*(dev)->ppb->ppb_link->adapter->insb_epp) \
+			((dev)->ppb->ppb_link->adapter_unit, buf, cnt)
+#define ppb_insw_epp(dev,buf,cnt) \
+			(*(dev)->ppb->ppb_link->adapter->insw_epp) \
+			((dev)->ppb->ppb_link->adapter_unit, buf, cnt)
+#define ppb_insl_epp(dev,buf,cnt) \
+			(*(dev)->ppb->ppb_link->adapter->insl_epp) \
+			((dev)->ppb->ppb_link->adapter_unit, buf, cnt)
+
+#define ppb_rdtr(dev) (*(dev)->ppb->ppb_link->adapter->r_dtr) \
+				((dev)->ppb->ppb_link->adapter_unit)
+#define ppb_rstr(dev) (*(dev)->ppb->ppb_link->adapter->r_str) \
+				((dev)->ppb->ppb_link->adapter_unit)
+#define ppb_rctr(dev) (*(dev)->ppb->ppb_link->adapter->r_ctr) \
+				((dev)->ppb->ppb_link->adapter_unit)
+#define ppb_repp(dev) (*(dev)->ppb->ppb_link->adapter->r_epp) \
+				((dev)->ppb->ppb_link->adapter_unit)
+#define ppb_recr(dev) (*(dev)->ppb->ppb_link->adapter->r_ecr) \
+				((dev)->ppb->ppb_link->adapter_unit)
+#define ppb_rfifo(dev) (*(dev)->ppb->ppb_link->adapter->r_fifo) \
+				((dev)->ppb->ppb_link->adapter_unit)
+
+#define ppb_wdtr(dev,byte) (*(dev)->ppb->ppb_link->adapter->w_dtr) \
+				((dev)->ppb->ppb_link->adapter_unit, byte)
+#define ppb_wstr(dev,byte) (*(dev)->ppb->ppb_link->adapter->w_str) \
+				((dev)->ppb->ppb_link->adapter_unit, byte)
+#define ppb_wctr(dev,byte) (*(dev)->ppb->ppb_link->adapter->w_ctr) \
+				((dev)->ppb->ppb_link->adapter_unit, byte)
+#define ppb_wepp(dev,byte) (*(dev)->ppb->ppb_link->adapter->w_epp) \
+				((dev)->ppb->ppb_link->adapter_unit, byte)
+#define ppb_wecr(dev,byte) (*(dev)->ppb->ppb_link->adapter->w_ecr) \
+				((dev)->ppb->ppb_link->adapter_unit, byte)
+#define ppb_wfifo(dev,byte) (*(dev)->ppb->ppb_link->adapter->w_fifo) \
+				((dev)->ppb->ppb_link->adapter_unit, byte)
+
+#endif