patch-2.3.10 linux/include/linux/parport_pc.h

• Lines: 223
• Date: Wed Jul 7 09:20:54 1999
• Orig file: v2.3.9/linux/include/linux/parport_pc.h
• Orig date: Tue Jun 22 14:41:46 1999

diff -u --recursive --new-file v2.3.9/linux/include/linux/parport_pc.h linux/include/linux/parport_pc.h
@@ -5,57 +5,39 @@
 
 /* --- register definitions ------------------------------- */
 
-#define ECONTROL(p)	((p)->base_hi + 0x02)
-#define CONFIGB(p)	((p)->base_hi + 0x01)
-#define CONFIGA(p)	((p)->base_hi + 0x00)
-#define EPPDATA(p)	((p)->base    + 0x04)
-#define EPPADDR(p)	((p)->base    + 0x03)
-#define CONTROL(p)	((p)->base    + 0x02)
-#define STATUS(p)	((p)->base    + 0x01)
-#define DATA(p)		((p)->base    + 0x00)
+#define ECONTROL(p) ((p)->base_hi + 0x2)
+#define CONFIGB(p)  ((p)->base_hi + 0x1)
+#define CONFIGA(p)  ((p)->base_hi + 0x0)
+#define FIFO(p)     ((p)->base_hi + 0x0)
+#define EPPDATA(p)  ((p)->base    + 0x4)
+#define EPPADDR(p)  ((p)->base    + 0x3)
+#define CONTROL(p)  ((p)->base    + 0x2)
+#define STATUS(p)   ((p)->base    + 0x1)
+#define DATA(p)     ((p)->base    + 0x0)
 
-/* Private data for PC low-level driver. */
 struct parport_pc_private {
 	/* Contents of CTR. */
 	unsigned char ctr;
-};
 
-extern int parport_pc_epp_clear_timeout(struct parport *pb);
+	/* Bitmask of writable CTR bits. */
+	unsigned char ctr_writable;
 
-extern volatile unsigned char parport_pc_ctr;
+	/* Whether or not there's an ECR. */
+	int ecr;
 
-extern __inline__ void parport_pc_write_epp(struct parport *p, unsigned char d)
-{
-	outb(d, EPPDATA(p));
-}
-
-extern __inline__ unsigned char parport_pc_read_epp(struct parport *p)
-{
-	return inb(EPPDATA(p));
-}
+	/* Number of PWords that FIFO will hold. */
+	int fifo_depth;
 
-extern __inline__ void parport_pc_write_epp_addr(struct parport *p, unsigned char d)
-{
-	outb(d, EPPADDR(p));
-}
+	/* Number of bytes per portword. */
+	int pword;
 
-extern __inline__ unsigned char parport_pc_read_epp_addr(struct parport *p)
-{
-	return inb(EPPADDR(p));
-}
+	/* Not used yet. */
+	int readIntrThreshold;
+	int writeIntrThreshold;
 
-extern __inline__ int parport_pc_check_epp_timeout(struct parport *p)
-{
-	if (!(inb(STATUS(p)) & 1))
-		return 0;
-	parport_pc_epp_clear_timeout(p);
-	return 1;
-}
-
-extern __inline__ unsigned char parport_pc_read_configb(struct parport *p)
-{
-	return inb(CONFIGB(p));
-}
+	/* buffer suitable for DMA, if DMA enabled */
+	char *dma_buf;
+};
 
 extern __inline__ void parport_pc_write_data(struct parport *p, unsigned char d)
 {
@@ -67,31 +49,68 @@
 	return inb(DATA(p));
 }
 
-extern __inline__ void parport_pc_write_control(struct parport *p, unsigned char d)
+extern __inline__ unsigned char __frob_control (struct parport *p,
+						unsigned char mask,
+						unsigned char val)
 {
-	struct parport_pc_private *priv = p->private_data;
-	priv->ctr = d;/* update soft copy */
-	outb(d, CONTROL(p));
+	struct parport_pc_private *priv = p->physport->private_data;
+	unsigned char ctr = priv->ctr;
+	ctr = (ctr & ~mask) ^ val;
+	ctr &= priv->ctr_writable; /* only write writable bits. */
+	outb (ctr, CONTROL (p));
+	return priv->ctr = ctr; /* update soft copy */
 }
 
-extern __inline__ unsigned char parport_pc_read_control(struct parport *p)
+extern __inline__ void parport_pc_data_reverse (struct parport *p)
 {
-	struct parport_pc_private *priv = p->private_data;
-	return priv->ctr;
+	__frob_control (p, 0x20, 0x20);
 }
 
-extern __inline__ unsigned char parport_pc_frob_control(struct parport *p, unsigned char mask,  unsigned char val)
+extern __inline__ void parport_pc_write_control (struct parport *p,
+						 unsigned char d)
 {
-	struct parport_pc_private *priv = p->private_data;
-	unsigned char ctr = priv->ctr;
-	ctr = (ctr & ~mask) ^ val;
-	outb (ctr, CONTROL(p));
-	return priv->ctr = ctr; /* update soft copy */
+	const unsigned char wm = (PARPORT_CONTROL_STROBE |
+				  PARPORT_CONTROL_AUTOFD |
+				  PARPORT_CONTROL_INIT |
+				  PARPORT_CONTROL_SELECT);
+
+	/* Take this out when drivers have adapted to newer interface. */
+	if (d & 0x20) {
+			printk (KERN_DEBUG "%s (%s): use data_reverse for this!\n",
+					p->name, p->cad->name);
+			parport_pc_data_reverse (p);
+	}
+
+	__frob_control (p, wm, d & wm);
 }
 
-extern __inline__ void parport_pc_write_status(struct parport *p, unsigned char d)
+extern __inline__ unsigned char parport_pc_read_control(struct parport *p)
 {
-	outb(d, STATUS(p));
+	const struct parport_pc_private *priv = p->physport->private_data;
+	return priv->ctr; /* Use soft copy */
+}
+
+extern __inline__ unsigned char parport_pc_frob_control (struct parport *p,
+							 unsigned char mask,
+							 unsigned char val)
+{
+	const unsigned char wm = (PARPORT_CONTROL_STROBE |
+				  PARPORT_CONTROL_AUTOFD |
+				  PARPORT_CONTROL_INIT |
+				  PARPORT_CONTROL_SELECT);
+
+	/* Take this out when drivers have adapted to newer interface. */
+	if (mask & 0x20) {
+			printk (KERN_DEBUG "%s (%s): use data_reverse for this!\n",
+					p->name, p->cad->name);
+			parport_pc_data_reverse (p);
+	}
+
+	/* Restrict mask and val to control lines. */
+	mask &= wm;
+	val &= wm;
+
+	return __frob_control (p, mask, val);
 }
 
 extern __inline__ unsigned char parport_pc_read_status(struct parport *p)
@@ -99,50 +118,30 @@
 	return inb(STATUS(p));
 }
 
-extern __inline__ void parport_pc_write_econtrol(struct parport *p, unsigned char d)
+extern __inline__ void parport_pc_data_forward (struct parport *p)
 {
-	outb(d, ECONTROL(p));
+	__frob_control (p, 0x20, 0x00);
 }
 
-extern __inline__ unsigned char parport_pc_read_econtrol(struct parport *p)
+extern __inline__ void parport_pc_disable_irq(struct parport *p)
 {
-	return inb(ECONTROL(p));
+	__frob_control (p, 0x10, 0x00);
 }
 
-extern __inline__ unsigned char parport_pc_frob_econtrol(struct parport *p, unsigned char mask,  unsigned char val)
+extern __inline__ void parport_pc_enable_irq(struct parport *p)
 {
-	unsigned char old = inb(ECONTROL(p));
-	outb(((old & ~mask) ^ val), ECONTROL(p));
-	return old;
+	__frob_control (p, 0x10, 0x10);
 }
 
-extern void parport_pc_change_mode(struct parport *p, int m);
-
-extern void parport_pc_write_fifo(struct parport *p, unsigned char v);
-
-extern unsigned char parport_pc_read_fifo(struct parport *p);
-
-extern void parport_pc_disable_irq(struct parport *p);
-
-extern void parport_pc_enable_irq(struct parport *p);
-
 extern void parport_pc_release_resources(struct parport *p);
 
 extern int parport_pc_claim_resources(struct parport *p);
 
-extern void parport_pc_init_state(struct parport_state *s);
+extern void parport_pc_init_state(struct pardevice *, struct parport_state *s);
 
 extern void parport_pc_save_state(struct parport *p, struct parport_state *s);
 
 extern void parport_pc_restore_state(struct parport *p, struct parport_state *s);
-
-extern size_t parport_pc_epp_read_block(struct parport *p, void *buf, size_t length);
-
-extern size_t parport_pc_epp_write_block(struct parport *p, void *buf, size_t length);
-
-extern int parport_pc_ecp_read_block(struct parport *p, void *buf, size_t length, void (*fn)(struct parport *, void *, size_t), void *handle);
-
-extern int parport_pc_ecp_write_block(struct parport *p, void *buf, size_t length, void (*fn)(struct parport *, void *, size_t), void *handle);
 
 extern void parport_pc_inc_use_count(void);