Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Linus Torvalds (pre-git) | 768 | 95.40% | 14 | 77.78% |
Matthew Wilcox | 24 | 2.98% | 1 | 5.56% |
Joe Perches | 9 | 1.12% | 1 | 5.56% |
Thomas Gleixner | 2 | 0.25% | 1 | 5.56% |
Helge Deller | 2 | 0.25% | 1 | 5.56% |
Total | 805 | 18 |
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Low-level parallel-support for PC-style hardware integrated in the * LASI-Controller (on GSC-Bus) for HP-PARISC Workstations * * (C) 1999-2001 by Helge Deller <deller@gmx.de> * * based on parport_pc.c by * Grant Guenther <grant@torque.net> * Phil Blundell <Philip.Blundell@pobox.com> * Tim Waugh <tim@cyberelk.demon.co.uk> * Jose Renau <renau@acm.org> * David Campbell * Andrea Arcangeli */ #ifndef __DRIVERS_PARPORT_PARPORT_GSC_H #define __DRIVERS_PARPORT_PARPORT_GSC_H #include <asm/io.h> #include <linux/delay.h> #undef DEBUG_PARPORT /* undefine for production */ #define DELAY_TIME 0 #if DELAY_TIME == 0 #define parport_readb gsc_readb #define parport_writeb gsc_writeb #else static __inline__ unsigned char parport_readb( unsigned long port ) { udelay(DELAY_TIME); return gsc_readb(port); } static __inline__ void parport_writeb( unsigned char value, unsigned long port ) { gsc_writeb(value,port); udelay(DELAY_TIME); } #endif /* --- register definitions ------------------------------- */ #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_gsc_private { /* Contents of CTR. */ unsigned char ctr; /* Bitmask of writable CTR bits. */ unsigned char ctr_writable; /* 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; }; static inline void parport_gsc_write_data(struct parport *p, unsigned char d) { #ifdef DEBUG_PARPORT printk(KERN_DEBUG "%s(%p,0x%02x)\n", __func__, p, d); #endif parport_writeb(d, DATA(p)); } static inline unsigned char parport_gsc_read_data(struct parport *p) { unsigned char val = parport_readb (DATA (p)); #ifdef DEBUG_PARPORT printk(KERN_DEBUG "%s(%p) = 0x%02x\n", __func__, p, val); #endif return val; } /* __parport_gsc_frob_control differs from parport_gsc_frob_control in that * it doesn't do any extra masking. */ static inline unsigned char __parport_gsc_frob_control(struct parport *p, unsigned char mask, unsigned char val) { struct parport_gsc_private *priv = p->physport->private_data; unsigned char ctr = priv->ctr; #ifdef DEBUG_PARPORT printk(KERN_DEBUG "%s(%02x,%02x): %02x -> %02x\n", __func__, mask, val, ctr, ((ctr & ~mask) ^ val) & priv->ctr_writable); #endif ctr = (ctr & ~mask) ^ val; ctr &= priv->ctr_writable; /* only write writable bits. */ parport_writeb (ctr, CONTROL (p)); priv->ctr = ctr; /* Update soft copy */ return ctr; } static inline void parport_gsc_data_reverse(struct parport *p) { __parport_gsc_frob_control (p, 0x20, 0x20); } static inline void parport_gsc_data_forward(struct parport *p) { __parport_gsc_frob_control (p, 0x20, 0x00); } static inline void parport_gsc_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_gsc_data_reverse (p); } __parport_gsc_frob_control (p, wm, d & wm); } static inline unsigned char parport_gsc_read_control(struct parport *p) { const unsigned char rm = (PARPORT_CONTROL_STROBE | PARPORT_CONTROL_AUTOFD | PARPORT_CONTROL_INIT | PARPORT_CONTROL_SELECT); const struct parport_gsc_private *priv = p->physport->private_data; return priv->ctr & rm; /* Use soft copy */ } static inline unsigned char parport_gsc_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_gsc_data_reverse (p); else parport_gsc_data_forward (p); } /* Restrict mask and val to control lines. */ mask &= wm; val &= wm; return __parport_gsc_frob_control (p, mask, val); } static inline unsigned char parport_gsc_read_status(struct parport *p) { return parport_readb (STATUS(p)); } static inline void parport_gsc_disable_irq(struct parport *p) { __parport_gsc_frob_control (p, 0x10, 0x00); } static inline void parport_gsc_enable_irq(struct parport *p) { __parport_gsc_frob_control (p, 0x10, 0x10); } extern void parport_gsc_release_resources(struct parport *p); extern int parport_gsc_claim_resources(struct parport *p); extern void parport_gsc_init_state(struct pardevice *, struct parport_state *s); extern void parport_gsc_save_state(struct parport *p, struct parport_state *s); extern void parport_gsc_restore_state(struct parport *p, struct parport_state *s); extern void parport_gsc_inc_use_count(void); extern void parport_gsc_dec_use_count(void); extern struct parport *parport_gsc_probe_port(unsigned long base, unsigned long base_hi, int irq, int dma, struct parisc_device *padev); #endif /* __DRIVERS_PARPORT_PARPORT_GSC_H */
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