1 #ifndef __LINUX_PARPORT_GSC_H
2 #define __LINUX_PARPORT_GSC_H
5 #include <linux/delay.h>
7 #undef DEBUG_PARPORT /* undefine for production */
11 #define parport_readb gsc_readb
12 #define parport_writeb gsc_writeb
14 static __inline__ unsigned char parport_readb( unsigned long port )
17 return gsc_readb(port);
20 static __inline__ void parport_writeb( unsigned char value, unsigned long port )
22 gsc_writeb(value,port);
27 /* --- register definitions ------------------------------- */
29 #define EPPDATA(p) ((p)->base + 0x4)
30 #define EPPADDR(p) ((p)->base + 0x3)
31 #define CONTROL(p) ((p)->base + 0x2)
32 #define STATUS(p) ((p)->base + 0x1)
33 #define DATA(p) ((p)->base + 0x0)
35 struct parport_gsc_private {
36 /* Contents of CTR. */
39 /* Bitmask of writable CTR bits. */
40 unsigned char ctr_writable;
42 /* Number of bytes per portword. */
46 int readIntrThreshold;
47 int writeIntrThreshold;
49 /* buffer suitable for DMA, if DMA enabled */
51 dma_addr_t dma_handle;
55 extern __inline__ void parport_gsc_write_data(struct parport *p, unsigned char d)
58 printk (KERN_DEBUG "parport_gsc_write_data(%p,0x%02x)\n", p, d);
60 parport_writeb(d, DATA(p));
63 extern __inline__ unsigned char parport_gsc_read_data(struct parport *p)
65 unsigned char val = parport_readb (DATA (p));
67 printk (KERN_DEBUG "parport_gsc_read_data(%p) = 0x%02x\n",
73 /* __parport_gsc_frob_control differs from parport_gsc_frob_control in that
74 * it doesn't do any extra masking. */
75 static __inline__ unsigned char __parport_gsc_frob_control (struct parport *p,
79 struct parport_gsc_private *priv = p->physport->private_data;
80 unsigned char ctr = priv->ctr;
83 "__parport_gsc_frob_control(%02x,%02x): %02x -> %02x\n",
84 mask, val, ctr, ((ctr & ~mask) ^ val) & priv->ctr_writable);
86 ctr = (ctr & ~mask) ^ val;
87 ctr &= priv->ctr_writable; /* only write writable bits. */
88 parport_writeb (ctr, CONTROL (p));
89 priv->ctr = ctr; /* Update soft copy */
93 extern __inline__ void parport_gsc_data_reverse (struct parport *p)
95 __parport_gsc_frob_control (p, 0x20, 0x20);
98 extern __inline__ void parport_gsc_data_forward (struct parport *p)
100 __parport_gsc_frob_control (p, 0x20, 0x00);
103 extern __inline__ void parport_gsc_write_control (struct parport *p,
106 const unsigned char wm = (PARPORT_CONTROL_STROBE |
107 PARPORT_CONTROL_AUTOFD |
108 PARPORT_CONTROL_INIT |
109 PARPORT_CONTROL_SELECT);
111 /* Take this out when drivers have adapted to newer interface. */
113 printk (KERN_DEBUG "%s (%s): use data_reverse for this!\n",
114 p->name, p->cad->name);
115 parport_gsc_data_reverse (p);
118 __parport_gsc_frob_control (p, wm, d & wm);
121 extern __inline__ unsigned char parport_gsc_read_control(struct parport *p)
123 const unsigned char rm = (PARPORT_CONTROL_STROBE |
124 PARPORT_CONTROL_AUTOFD |
125 PARPORT_CONTROL_INIT |
126 PARPORT_CONTROL_SELECT);
127 const struct parport_gsc_private *priv = p->physport->private_data;
128 return priv->ctr & rm; /* Use soft copy */
131 extern __inline__ unsigned char parport_gsc_frob_control (struct parport *p,
135 const unsigned char wm = (PARPORT_CONTROL_STROBE |
136 PARPORT_CONTROL_AUTOFD |
137 PARPORT_CONTROL_INIT |
138 PARPORT_CONTROL_SELECT);
140 /* Take this out when drivers have adapted to newer interface. */
142 printk (KERN_DEBUG "%s (%s): use data_%s for this!\n",
143 p->name, p->cad->name,
144 (val & 0x20) ? "reverse" : "forward");
146 parport_gsc_data_reverse (p);
148 parport_gsc_data_forward (p);
151 /* Restrict mask and val to control lines. */
155 return __parport_gsc_frob_control (p, mask, val);
158 extern __inline__ unsigned char parport_gsc_read_status(struct parport *p)
160 return parport_readb (STATUS(p));
164 extern __inline__ void parport_gsc_disable_irq(struct parport *p)
166 __parport_gsc_frob_control (p, 0x10, 0x00);
169 extern __inline__ void parport_gsc_enable_irq(struct parport *p)
171 __parport_gsc_frob_control (p, 0x10, 0x10);
174 extern void parport_gsc_release_resources(struct parport *p);
176 extern int parport_gsc_claim_resources(struct parport *p);
178 extern void parport_gsc_init_state(struct pardevice *, struct parport_state *s);
180 extern void parport_gsc_save_state(struct parport *p, struct parport_state *s);
182 extern void parport_gsc_restore_state(struct parport *p, struct parport_state *s);
184 extern void parport_gsc_inc_use_count(void);
186 extern void parport_gsc_dec_use_count(void);
188 extern struct parport *parport_gsc_probe_port (unsigned long base,
189 unsigned long base_hi,
191 struct pci_dev *dev);