patch-2.0.34 linux/drivers/scsi/ppa.h

• Lines: 212
• Date: Wed Jun 3 15:17:49 1998
• Orig file: v2.0.33/linux/drivers/scsi/ppa.h
• Orig date: Thu Mar 14 02:57:46 1996

diff -u --recursive --new-file v2.0.33/linux/drivers/scsi/ppa.h linux/drivers/scsi/ppa.h
@@ -1,44 +1,173 @@
-#ifndef _PPA_H
-#define _PPA_H
-
 /*  Driver for the PPA3 parallel port SCSI HBA embedded in 
-    the Iomega ZIP drive
+ * the Iomega ZIP drive
+ * 
+ * (c) 1996     Grant R. Guenther  grant@torque.net
+ *		David Campbell	   campbell@torque.net
+ *
+ *	All comments to David.
+ */
 
-	(c) 1996	Grant R. Guenther  grant@torque.net
-*/
+#ifndef _PPA_H
+#define _PPA_H
 
-#define	PPA_INITIATOR	7
+#define   PPA_VERSION   "1.42"
 
-int ppa_detect(Scsi_Host_Template * );
-const char * ppa_info(struct Scsi_Host *);
-int ppa_command(Scsi_Cmnd *);
-int ppa_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *));
+/* Use the following to enable certain chipset support
+ * Default is PEDANTIC = 3
+ */
+#ifndef CONFIG_SCSI_PPA_HAVE_PEDANTIC
+#define CONFIG_SCSI_PPA_HAVE_PEDANTIC	3
+#endif
+
+/* 
+ * this driver has been hacked by Matteo Frigo (athena@theory.lcs.mit.edu)
+ * to support EPP and scatter-gather.                        [0.26-athena]
+ *
+ * additional hacks by David Campbell
+ * in response to this driver "mis-behaving" on his machine.
+ *      Fixed EPP to handle "software" changing of EPP port data direction.
+ *      Chased down EPP timeouts
+ *      Made this driver "kernel version friendly"           [0.28-athena]
+ *
+ * [ Stuff removed ]
+ *
+ * Compiled against 2.1.53.
+ *	Rebuilt ppa_abort() function, should handle unplugged cable.
+ *							[1.35s]
+ *
+ * PPA now auto probes for EPP on base address which are aligned on
+ * 8 byte boundaries (0x278 & 0x378) using the attached devices.
+ * This hopefully avoids the nasty problem of trying to detect EPP.
+ *	Tested on 2.1.53				[1.36]
+ *
+ * The id_probe utility no longer performs read/write tests.
+ * Additional code included for checking the Intel ECP bug
+ * (Bit 0 of STR stuck low which fools the EPP detection routine)
+ *							[1.37]
+ *
+ * Oops! Got the bit sign mixed up for the Intel bug check.
+ * Found that an additional delay is required during SCSI resets
+ * to allow devices to settle down.
+ *							[1.38]
+ *
+ * Fixed all problems in the parport sharing scheme. Now ppa can be safe
+ * used with lp or other parport devices on the same parallel port.
+ *		1997 by Andrea Arcangeli <arcangeli@mbox.queen.it>
+ *							[1.39]
+ *
+ * Little fix in ppa engine to ensure that ppa don' t release parport
+ * or disconnect in wrong cases.
+ *		1997 by Andrea Arcangeli <arcangeli@mbox.queen.it>
+ *							[1.40]
+ *
+ * Corrected ppa.h for 2.1.x kernels (>=2.1.85)
+ * Modified "Nat Semi Kludge" for extended chipsets
+ *							[1.41]
+ *
+ * Fixed id_probe for EPP 1.9 chipsets (misdetected as EPP 1.7)
+ *							[1.42]
+ */
+/* ------ END OF USER CONFIGURABLE PARAMETERS ----- */
+
+#ifdef PPA_CODE
+#include  <linux/stddef.h>
+#include  <linux/module.h>
+#include  <linux/kernel.h>
+#include  <linux/tqueue.h>
+#include  <linux/ioport.h>
+#include  <linux/delay.h>
+#include  <linux/proc_fs.h>
+#include  <linux/stat.h>
+#include  <linux/blk.h>
+#include  <linux/sched.h>
+#include  <linux/interrupt.h>
+
+#include  <asm/io.h>
+#include  "sd.h"
+#include  "hosts.h"
+/* batteries not included :-) */
+
+/*
+ * modes in which the driver can operate 
+ */
+#define   PPA_AUTODETECT        0	/* Autodetect mode                */
+#define   PPA_NIBBLE            1	/* work in standard 4 bit mode    */
+#define   PPA_PS2               2	/* PS/2 byte mode         */
+#define   PPA_EPP_8             3	/* EPP mode, 8 bit                */
+#define   PPA_EPP_16            4	/* EPP mode, 16 bit               */
+#define   PPA_EPP_32            5	/* EPP mode, 32 bit               */
+#define   PPA_UNKNOWN           6	/* Just in case...                */
+
+static char *PPA_MODE_STRING[] =
+{
+    "Autodetect",
+    "SPP",
+    "PS/2",
+    "EPP 8 bit",
+    "EPP 16 bit",
+    "EPP 32 bit",
+    "Unknown"};
+
+/* This is a global option */
+int ppa_sg = SG_ALL;		/* enable/disable scatter-gather. */
+
+/* other options */
+#define PPA_CAN_QUEUE   1	/* use "queueing" interface */
+#define PPA_BURST_SIZE	512	/* data burst size */
+#define PPA_SELECT_TMO  5000	/* how long to wait for target ? */
+#define PPA_SPIN_TMO    50000	/* ppa_wait loop limiter */
+#define PPA_DEBUG	0	/* debuging option */
+#define IN_EPP_MODE(x) (x == PPA_EPP_8 || x == PPA_EPP_16 || x == PPA_EPP_32)
+
+/* args to ppa_connect */
+#define CONNECT_EPP_MAYBE 1
+#define CONNECT_NORMAL  0
+
+#define r_dtr(x)        (unsigned char)inb((x))
+#define r_str(x)        (unsigned char)inb((x)+1)
+#define r_ctr(x)        (unsigned char)inb((x)+2)
+#define r_epp(x)        (unsigned char)inb((x)+4)
+#define r_fifo(x)       (unsigned char)inb((x)+0x400)
+#define r_ecr(x)        (unsigned char)inb((x)+0x402)
+
+#define w_dtr(x,y)      outb(y, (x))
+#define w_str(x,y)      outb(y, (x)+1)
+#define w_ctr(x,y)      outb(y, (x)+2)
+#define w_epp(x,y)      outb(y, (x)+4)
+#define w_fifo(x,y)     outb(y, (x)+0x400)
+#define w_ecr(x,y)      outb(y, (x)+0x402)
+
+static int ppa_engine(ppa_struct *, Scsi_Cmnd *);
+static int ppa_in(int, char *, int);
+static int ppa_init(int);
+static void ppa_interrupt(void *);
+static int ppa_out(int, char *, int);
+
+struct proc_dir_entry proc_scsi_ppa =
+{PROC_SCSI_PPA, 3, "ppa", S_IFDIR | S_IRUGO | S_IXUGO, 2};
+#else
+extern struct proc_dir_entry proc_scsi_ppa;
+#endif
+
+int ppa_detect(Scsi_Host_Template *);
+const char *ppa_info(struct Scsi_Host *);
+int ppa_queuecommand(Scsi_Cmnd *, void (*done) (Scsi_Cmnd *));
 int ppa_abort(Scsi_Cmnd *);
-int ppa_reset(Scsi_Cmnd *);
-int ppa_biosparam(Disk *, kdev_t, int[]);
-
-#define PPA {			\
-	0,			\
-	0,			\
-	0,			\
-	0,		        \
-	0,			\
-	ppa_detect,		\
-	0,			\
-	ppa_info,		\
-	ppa_command, 		\
-	ppa_queuecommand,	\
-	ppa_abort,		\
-	ppa_reset,		\
-	0,			\
-	ppa_biosparam,		\
-	0,			\
-	PPA_INITIATOR,		\
-	SG_NONE,		\
-	1,			\
-	0,			\
-	0,			\
-	DISABLE_CLUSTERING	\
+int ppa_reset(Scsi_Cmnd *, unsigned int);
+int ppa_proc_info(char *, char **, off_t, int, int, int);
+int ppa_biosparam(Disk *, kdev_t, int *);
+
+#define PPA {	proc_dir:		&proc_scsi_ppa,			\
+		proc_info:		ppa_proc_info,			\
+		name:			"Iomega parport ZIP drive",	\
+		detect:			ppa_detect,			\
+		queuecommand:		ppa_queuecommand,		\
+		abort:			ppa_abort,			\
+		reset:			ppa_reset,			\
+		bios_param:		ppa_biosparam,			\
+		this_id:		-1,				\
+		sg_tablesize:		SG_ALL,				\
+		cmd_per_lun:		1,				\
+		use_clustering:		ENABLE_CLUSTERING		\
 }
-
-#endif /* _PPA_H */
+#endif				/* _PPA_H */