cregit-Linux how code gets into the kernel

Release 4.12 include/linux/parport_pc.h

Directory: include/linux
#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 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)); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4097.56%583.33%
Andrew Morton12.44%116.67%
Total41100.00%6100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4297.67%583.33%
Andrew Morton12.33%116.67%
Total43100.00%6100.00%

#ifdef DEBUG_PARPORT
static 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; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds36098.90%133.33%
Marko Kohtala20.55%133.33%
Adrian Bunk20.55%133.33%
Total364100.00%3100.00%

#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; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)110100.00%4100.00%
Total110100.00%4100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2095.24%480.00%
Andrew Morton14.76%120.00%
Total21100.00%5100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2095.24%150.00%
Andrew Morton14.76%150.00%
Total21100.00%2100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)7198.61%480.00%
Andrew Morton11.39%120.00%
Total72100.00%5100.00%


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 */ }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4797.92%583.33%
Andrew Morton12.08%116.67%
Total48100.00%6100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)10699.07%583.33%
Andrew Morton10.93%116.67%
Total107100.00%6100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2195.45%480.00%
Andrew Morton14.55%120.00%
Total22100.00%5100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2095.24%480.00%
Andrew Morton14.76%120.00%
Total21100.00%5100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2095.24%480.00%
Andrew Morton14.76%120.00%
Total21100.00%5100.00%

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 device *dev, int irqflags); extern void parport_pc_unregister_port(struct parport *p); #endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)68160.48%950.00%
Linus Torvalds38634.28%211.11%
Pavel Fedin322.84%15.56%
Andrew Morton100.89%15.56%
Al Viro90.80%15.56%
Alan Cox30.27%15.56%
Adrian Bunk20.18%15.56%
Marko Kohtala20.18%15.56%
David Brownell10.09%15.56%
Total1126100.00%18100.00%
Directory: include/linux
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