include/linux/parport_pc.h - kernel/msm-4.19 - Gitiles

 #ifndef __LINUX_PARPORT_PC_H
 #define __LINUX_PARPORT_PC_H

 #include <asm/io.h>

 /* --- register definitions ------------------------------- */

 #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)

 struct parport_pc_private {
 	/* Contents of CTR. */
 	unsigned char ctr;

 	/* Bitmask of writable CTR bits. */
 	unsigned char ctr_writable;

 	/* Whether or not there's an ECR. */
 	int ecr;

 	/* Number of PWords that FIFO will hold. */
 	int fifo_depth;

 	/* Number of bytes per portword. */
 	int pword;

 	/* Not used yet. */
 	int readIntrThreshold;
 	int writeIntrThreshold;

 	/* buffer suitable for DMA, if DMA enabled */
 	char *dma_buf;
 	dma_addr_t dma_handle;
 	struct pci_dev *dev;
 	struct list_head list;
 	struct parport *port;
 };

 struct parport_pc_via_data
 {
 	/* ISA PnP IRQ routing register 1 */
 	u8 via_pci_parport_irq_reg;
 	/* ISA PnP DMA request routing register */
 	u8 via_pci_parport_dma_reg;
 	/* Register and value to enable SuperIO configuration access */
 	u8 via_pci_superio_config_reg;
 	u8 via_pci_superio_config_data;
 	/* SuperIO function register number */
 	u8 viacfg_function;
 	/* parallel port control register number */
 	u8 viacfg_parport_control;
 	/* Parallel port base address register */
 	u8 viacfg_parport_base;
 };

 static __inline__ void parport_pc_write_data(struct parport *p, unsigned char d)
 {
 #ifdef DEBUG_PARPORT
 	printk (KERN_DEBUG "parport_pc_write_data(%p,0x%02x)\n", p, d);
 #endif
 	outb(d, DATA(p));
 }

 static __inline__ unsigned char parport_pc_read_data(struct parport *p)
 {
 	unsigned char val = inb (DATA (p));
 #ifdef DEBUG_PARPORT
 	printk (KERN_DEBUG "parport_pc_read_data(%p) = 0x%02x\n",
 		p, val);
 #endif
 	return val;
 }

 #ifdef DEBUG_PARPORT
 extern __inline__ void dump_parport_state (char *str, struct parport *p)
 {
 	/* here's hoping that reading these ports won't side-effect anything underneath */
 	unsigned char ecr = inb (ECONTROL (p));
 	unsigned char dcr = inb (CONTROL (p));
 	unsigned char dsr = inb (STATUS (p));
 	static const char *const ecr_modes[] = {"SPP", "PS2", "PPFIFO", "ECP", "xXx", "yYy", "TST", "CFG"};
 	const struct parport_pc_private *priv = p->physport->private_data;
 	int i;

 	printk (KERN_DEBUG "*** parport state (%s): ecr=[%s", str, ecr_modes[(ecr & 0xe0) >> 5]);
 	if (ecr & 0x10) printk (",nErrIntrEn");
 	if (ecr & 0x08) printk (",dmaEn");
 	if (ecr & 0x04) printk (",serviceIntr");
 	if (ecr & 0x02) printk (",f_full");
 	if (ecr & 0x01) printk (",f_empty");
 	for (i=0; i<2; i++) {
 		printk ("]  dcr(%s)=[", i ? "soft" : "hard");
 		dcr = i ? priv->ctr : inb (CONTROL (p));

 		if (dcr & 0x20) {
 			printk ("rev");
 		} else {
 			printk ("fwd");
 		}
 		if (dcr & 0x10) printk (",ackIntEn");
 		if (!(dcr & 0x08)) printk (",N-SELECT-IN");
 		if (dcr & 0x04) printk (",N-INIT");
 		if (!(dcr & 0x02)) printk (",N-AUTOFD");
 		if (!(dcr & 0x01)) printk (",N-STROBE");
 	}
 	printk ("]  dsr=[");
 	if (!(dsr & 0x80)) printk ("BUSY");
 	if (dsr & 0x40) printk (",N-ACK");
 	if (dsr & 0x20) printk (",PERROR");
 	if (dsr & 0x10) printk (",SELECT");
 	if (dsr & 0x08) printk (",N-FAULT");
 	printk ("]\n");
 	return;
 }
 #else	/* !DEBUG_PARPORT */
 #define dump_parport_state(args...)
 #endif	/* !DEBUG_PARPORT */

 /* __parport_pc_frob_control differs from parport_pc_frob_control in that
  * it doesn't do any extra masking. */
 static __inline__ unsigned char __parport_pc_frob_control (struct parport *p,
 							   unsigned char mask,
 							   unsigned char val)
 {
 	struct parport_pc_private *priv = p->physport->private_data;
 	unsigned char ctr = priv->ctr;
 #ifdef DEBUG_PARPORT
 	printk (KERN_DEBUG
 		"__parport_pc_frob_control(%02x,%02x): %02x -> %02x\n",
 		mask, val, ctr, ((ctr & ~mask) ^ val) & priv->ctr_writable);
 #endif
 	ctr = (ctr & ~mask) ^ val;
 	ctr &= priv->ctr_writable; /* only write writable bits. */
 	outb (ctr, CONTROL (p));
 	priv->ctr = ctr;	/* Update soft copy */
 	return ctr;
 }

 static __inline__ void parport_pc_data_reverse (struct parport *p)
 {
 	__parport_pc_frob_control (p, 0x20, 0x20);
 }

 static __inline__ void parport_pc_data_forward (struct parport *p)
 {
 	__parport_pc_frob_control (p, 0x20, 0x00);
 }

 static __inline__ void parport_pc_write_control (struct parport *p,
 						 unsigned char d)
 {
 	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);
 	}

 	__parport_pc_frob_control (p, wm, d & wm);
 }

 static __inline__ unsigned char parport_pc_read_control(struct parport *p)
 {
 	const unsigned char rm = (PARPORT_CONTROL_STROBE |
 				  PARPORT_CONTROL_AUTOFD |
 				  PARPORT_CONTROL_INIT |
 				  PARPORT_CONTROL_SELECT);
 	const struct parport_pc_private *priv = p->physport->private_data;
 	return priv->ctr & rm; /* Use soft copy */
 }

 static __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_%s for this!\n",
 			p->name, p->cad->name,
 			(val & 0x20) ? "reverse" : "forward");
 		if (val & 0x20)
 			parport_pc_data_reverse (p);
 		else
 			parport_pc_data_forward (p);
 	}

 	/* Restrict mask and val to control lines. */
 	mask &= wm;
 	val &= wm;

 	return __parport_pc_frob_control (p, mask, val);
 }

 static __inline__ unsigned char parport_pc_read_status(struct parport *p)
 {
 	return inb(STATUS(p));
 }


 static __inline__ void parport_pc_disable_irq(struct parport *p)
 {
 	__parport_pc_frob_control (p, 0x10, 0x00);
 }

 static __inline__ void parport_pc_enable_irq(struct parport *p)
 {
 	__parport_pc_frob_control (p, 0x10, 0x10);
 }

 extern void parport_pc_release_resources(struct parport *p);

 extern int parport_pc_claim_resources(struct parport *p);

 /* PCMCIA code will want to get us to look at a port.  Provide a mechanism. */
 extern struct parport *parport_pc_probe_port (unsigned long base,
 					      unsigned long base_hi,
 					      int irq, int dma,
 					      struct pci_dev *dev);
 extern void parport_pc_unregister_port (struct parport *p);

 #endif
	#ifndef __LINUX_PARPORT_PC_H
	#define __LINUX_PARPORT_PC_H

	#include <asm/io.h>

	/* --- register definitions ------------------------------- */

	#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)

	struct parport_pc_private {
	/* Contents of CTR. */
	unsigned char ctr;

	/* Bitmask of writable CTR bits. */
	unsigned char ctr_writable;

	/* Whether or not there's an ECR. */
	int ecr;

	/* Number of PWords that FIFO will hold. */
	int fifo_depth;

	/* Number of bytes per portword. */
	int pword;

	/* Not used yet. */
	int readIntrThreshold;
	int writeIntrThreshold;

	/* buffer suitable for DMA, if DMA enabled */
	char *dma_buf;
	dma_addr_t dma_handle;
	struct pci_dev *dev;
	struct list_head list;
	struct parport *port;
	};

	struct parport_pc_via_data
	{
	/* ISA PnP IRQ routing register 1 */
	u8 via_pci_parport_irq_reg;
	/* ISA PnP DMA request routing register */
	u8 via_pci_parport_dma_reg;
	/* Register and value to enable SuperIO configuration access */
	u8 via_pci_superio_config_reg;
	u8 via_pci_superio_config_data;
	/* SuperIO function register number */
	u8 viacfg_function;
	/* parallel port control register number */
	u8 viacfg_parport_control;
	/* Parallel port base address register */
	u8 viacfg_parport_base;
	};

	static __inline__ void parport_pc_write_data(struct parport *p, unsigned char d)
	{
	#ifdef DEBUG_PARPORT
	printk (KERN_DEBUG "parport_pc_write_data(%p,0x%02x)\n", p, d);
	#endif
	outb(d, DATA(p));
	}

	static __inline__ unsigned char parport_pc_read_data(struct parport *p)
	{
	unsigned char val = inb (DATA (p));
	#ifdef DEBUG_PARPORT
	printk (KERN_DEBUG "parport_pc_read_data(%p) = 0x%02x\n",
	p, val);
	#endif
	return val;
	}

	#ifdef DEBUG_PARPORT
	extern __inline__ void dump_parport_state (char str, struct parport p)
	{
	/* here's hoping that reading these ports won't side-effect anything underneath */
	unsigned char ecr = inb (ECONTROL (p));
	unsigned char dcr = inb (CONTROL (p));
	unsigned char dsr = inb (STATUS (p));
	static const char *const ecr_modes[] = {"SPP", "PS2", "PPFIFO", "ECP", "xXx", "yYy", "TST", "CFG"};
	const struct parport_pc_private *priv = p->physport->private_data;
	int i;

	printk (KERN_DEBUG "*** parport state (%s): ecr=[%s", str, ecr_modes[(ecr & 0xe0) >> 5]);
	if (ecr & 0x10) printk (",nErrIntrEn");
	if (ecr & 0x08) printk (",dmaEn");
	if (ecr & 0x04) printk (",serviceIntr");
	if (ecr & 0x02) printk (",f_full");
	if (ecr & 0x01) printk (",f_empty");
	for (i=0; i<2; i++) {
	printk ("] dcr(%s)=[", i ? "soft" : "hard");
	dcr = i ? priv->ctr : inb (CONTROL (p));

	if (dcr & 0x20) {
	printk ("rev");
	} else {
	printk ("fwd");
	}
	if (dcr & 0x10) printk (",ackIntEn");
	if (!(dcr & 0x08)) printk (",N-SELECT-IN");
	if (dcr & 0x04) printk (",N-INIT");
	if (!(dcr & 0x02)) printk (",N-AUTOFD");
	if (!(dcr & 0x01)) printk (",N-STROBE");
	}
	printk ("] dsr=[");
	if (!(dsr & 0x80)) printk ("BUSY");
	if (dsr & 0x40) printk (",N-ACK");
	if (dsr & 0x20) printk (",PERROR");
	if (dsr & 0x10) printk (",SELECT");
	if (dsr & 0x08) printk (",N-FAULT");
	printk ("]\n");
	return;
	}
	#else /* !DEBUG_PARPORT */
	#define dump_parport_state(args...)
	#endif /* !DEBUG_PARPORT */

	/* __parport_pc_frob_control differs from parport_pc_frob_control in that
	* it doesn't do any extra masking. */
	static __inline__ unsigned char __parport_pc_frob_control (struct parport *p,
	unsigned char mask,
	unsigned char val)
	{
	struct parport_pc_private *priv = p->physport->private_data;
	unsigned char ctr = priv->ctr;
	#ifdef DEBUG_PARPORT
	printk (KERN_DEBUG
	"__parport_pc_frob_control(%02x,%02x): %02x -> %02x\n",
	mask, val, ctr, ((ctr & ~mask) ^ val) & priv->ctr_writable);
	#endif
	ctr = (ctr & ~mask) ^ val;
	ctr &= priv->ctr_writable; /* only write writable bits. */
	outb (ctr, CONTROL (p));
	priv->ctr = ctr; /* Update soft copy */
	return ctr;
	}

	static __inline__ void parport_pc_data_reverse (struct parport *p)
	{
	__parport_pc_frob_control (p, 0x20, 0x20);
	}

	static __inline__ void parport_pc_data_forward (struct parport *p)
	{
	__parport_pc_frob_control (p, 0x20, 0x00);
	}

	static __inline__ void parport_pc_write_control (struct parport *p,
	unsigned char d)
	{
	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);
	}

	__parport_pc_frob_control (p, wm, d & wm);
	}

	static __inline__ unsigned char parport_pc_read_control(struct parport *p)
	{
	const unsigned char rm = (PARPORT_CONTROL_STROBE \|
	PARPORT_CONTROL_AUTOFD \|
	PARPORT_CONTROL_INIT \|
	PARPORT_CONTROL_SELECT);
	const struct parport_pc_private *priv = p->physport->private_data;
	return priv->ctr & rm; /* Use soft copy */
	}

	static __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_%s for this!\n",
	p->name, p->cad->name,
	(val & 0x20) ? "reverse" : "forward");
	if (val & 0x20)
	parport_pc_data_reverse (p);
	else
	parport_pc_data_forward (p);
	}

	/* Restrict mask and val to control lines. */
	mask &= wm;
	val &= wm;

	return __parport_pc_frob_control (p, mask, val);
	}

	static __inline__ unsigned char parport_pc_read_status(struct parport *p)
	{
	return inb(STATUS(p));
	}


	static __inline__ void parport_pc_disable_irq(struct parport *p)
	{
	__parport_pc_frob_control (p, 0x10, 0x00);
	}

	static __inline__ void parport_pc_enable_irq(struct parport *p)
	{
	__parport_pc_frob_control (p, 0x10, 0x10);
	}

	extern void parport_pc_release_resources(struct parport *p);

	extern int parport_pc_claim_resources(struct parport *p);

	/* PCMCIA code will want to get us to look at a port. Provide a mechanism. */
	extern struct parport *parport_pc_probe_port (unsigned long base,
	unsigned long base_hi,
	int irq, int dma,
	struct pci_dev *dev);
	extern void parport_pc_unregister_port (struct parport *p);

	#endif