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#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;
};
extern __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));
}
extern __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;
}
/* __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;
}
extern __inline__ void parport_pc_data_reverse (struct parport *p)
{
__parport_pc_frob_control (p, 0x20, 0x20);
}
extern __inline__ void parport_pc_data_forward (struct parport *p)
{
__parport_pc_frob_control (p, 0x20, 0x00);
}
extern __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);
}
extern __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 */
}
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_%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);
}
extern __inline__ unsigned char parport_pc_read_status(struct parport *p)
{
return inb(STATUS(p));
}
extern __inline__ void parport_pc_disable_irq(struct parport *p)
{
__parport_pc_frob_control (p, 0x10, 0x00);
}
extern __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);
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 void parport_pc_inc_use_count(void);
extern void parport_pc_dec_use_count(void);
/* 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);
#endif
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