tools/brcm/K24/hndtools-mipsel-uclibc-4.2.4/include/linux/parport_pc.h

   1 #ifndef __LINUX_PARPORT_PC_H
   2 #define __LINUX_PARPORT_PC_H
   3
   4 #include <asm/io.h>
   5
   6 /* --- register definitions ------------------------------- */
   7
   8 #define ECONTROL(p) ((p)->base_hi + 0x2)
   9 #define CONFIGB(p)  ((p)->base_hi + 0x1)
  10 #define CONFIGA(p)  ((p)->base_hi + 0x0)
  11 #define FIFO(p)     ((p)->base_hi + 0x0)
  12 #define EPPDATA(p)  ((p)->base    + 0x4)
  13 #define EPPADDR(p)  ((p)->base    + 0x3)
  14 #define CONTROL(p)  ((p)->base    + 0x2)
  15 #define STATUS(p)   ((p)->base    + 0x1)
  16 #define DATA(p)     ((p)->base    + 0x0)
  17
  18 struct parport_pc_private {
  19         /* Contents of CTR. */
  20         unsigned char ctr;
  21
  22         /* Bitmask of writable CTR bits. */
  23         unsigned char ctr_writable;
  24
  25         /* Whether or not there's an ECR. */
  26         int ecr;
  27
  28         /* Number of PWords that FIFO will hold. */
  29         int fifo_depth;
  30
  31         /* Number of bytes per portword. */
  32         int pword;
  33
  34         /* Not used yet. */
  35         int readIntrThreshold;
  36         int writeIntrThreshold;
  37
  38         /* buffer suitable for DMA, if DMA enabled */
  39         char *dma_buf;
  40         dma_addr_t dma_handle;
  41         struct pci_dev *dev;
  42 };
  43
  44 static __inline__ void parport_pc_write_data(struct parport *p, unsigned char d)
  45 {
  46 #ifdef DEBUG_PARPORT
  47         printk (KERN_DEBUG "parport_pc_write_data(%p,0x%02x)\n", p, d);
  48 #endif
  49         outb(d, DATA(p));
  50 }
  51
  52 static __inline__ unsigned char parport_pc_read_data(struct parport *p)
  53 {
  54         unsigned char val = inb (DATA (p));
  55 #ifdef DEBUG_PARPORT
  56         printk (KERN_DEBUG "parport_pc_read_data(%p) = 0x%02x\n",
  57                 p, val);
  58 #endif
  59         return val;
  60 }
  61
  62 #ifdef DEBUG_PARPORT
  63 extern __inline__ void dump_parport_state (char *str, struct parport *p)
  64 {
  65         /* here's hoping that reading these ports won't side-effect anything underneath */
  66         unsigned char ecr = inb (ECONTROL (p));
  67         unsigned char dcr = inb (CONTROL (p));
  68         unsigned char dsr = inb (STATUS (p));
  69         static char *ecr_modes[] = {"SPP", "PS2", "PPFIFO", "ECP", "xXx", "yYy", "TST", "CFG"};
  70         const struct parport_pc_private *priv = (parport_pc_private *)p->physport->private_data;
  71         int i;
  72
  73         printk (KERN_DEBUG "*** parport state (%s): ecr=[%s", str, ecr_modes[(ecr & 0xe0) >> 5]);
  74         if (ecr & 0x10) printk (",nErrIntrEn");
  75         if (ecr & 0x08) printk (",dmaEn");
  76         if (ecr & 0x04) printk (",serviceIntr");
  77         if (ecr & 0x02) printk (",f_full");
  78         if (ecr & 0x01) printk (",f_empty");
  79         for (i=0; i<2; i++) {
  80                 printk ("]  dcr(%s)=[", i ? "soft" : "hard");
  81                 dcr = i ? priv->ctr : inb (CONTROL (p));
  82
  83                 if (dcr & 0x20) {
  84                         printk ("rev");
  85                 } else {
  86                         printk ("fwd");
  87                 }
  88                 if (dcr & 0x10) printk (",ackIntEn");
  89                 if (!(dcr & 0x08)) printk (",N-SELECT-IN");
  90                 if (dcr & 0x04) printk (",N-INIT");
  91                 if (!(dcr & 0x02)) printk (",N-AUTOFD");
  92                 if (!(dcr & 0x01)) printk (",N-STROBE");
  93         }
  94         printk ("]  dsr=[");
  95         if (!(dsr & 0x80)) printk ("BUSY");
  96         if (dsr & 0x40) printk (",N-ACK");
  97         if (dsr & 0x20) printk (",PERROR");
  98         if (dsr & 0x10) printk (",SELECT");
  99         if (dsr & 0x08) printk (",N-FAULT");
 100         printk ("]\n");
 101         return;
 102 }
 103 #else   /* !DEBUG_PARPORT */
 104 #define dump_parport_state(args...)
 105 #endif  /* !DEBUG_PARPORT */
 106
 107 /* __parport_pc_frob_control differs from parport_pc_frob_control in that
 108  * it doesn't do any extra masking. */
 109 static __inline__ unsigned char __parport_pc_frob_control (struct parport *p,
 110                                                            unsigned char mask,
 111                                                            unsigned char val)
 112 {
 113         struct parport_pc_private *priv = p->physport->private_data;
 114         unsigned char ctr = priv->ctr;
 115 #ifdef DEBUG_PARPORT
 116         printk (KERN_DEBUG
 117                 "__parport_pc_frob_control(%02x,%02x): %02x -> %02x\n",
 118                 mask, val, ctr, ((ctr & ~mask) ^ val) & priv->ctr_writable);
 119 #endif
 120         ctr = (ctr & ~mask) ^ val;
 121         ctr &= priv->ctr_writable; /* only write writable bits. */
 122         outb (ctr, CONTROL (p));
 123         priv->ctr = ctr;        /* Update soft copy */
 124         return ctr;
 125 }
 126
 127 static __inline__ void parport_pc_data_reverse (struct parport *p)
 128 {
 129         __parport_pc_frob_control (p, 0x20, 0x20);
 130 }
 131
 132 static __inline__ void parport_pc_data_forward (struct parport *p)
 133 {
 134         __parport_pc_frob_control (p, 0x20, 0x00);
 135 }
 136
 137 static __inline__ void parport_pc_write_control (struct parport *p,
 138                                                  unsigned char d)
 139 {
 140         const unsigned char wm = (PARPORT_CONTROL_STROBE |
 141                                   PARPORT_CONTROL_AUTOFD |
 142                                   PARPORT_CONTROL_INIT |
 143                                   PARPORT_CONTROL_SELECT);
 144
 145         /* Take this out when drivers have adapted to newer interface. */
 146         if (d & 0x20) {
 147                 printk (KERN_DEBUG "%s (%s): use data_reverse for this!\n",
 148                         p->name, p->cad->name);
 149                 parport_pc_data_reverse (p);
 150         }
 151
 152         __parport_pc_frob_control (p, wm, d & wm);
 153 }
 154
 155 static __inline__ unsigned char parport_pc_read_control(struct parport *p)
 156 {
 157         const unsigned char rm = (PARPORT_CONTROL_STROBE |
 158                                   PARPORT_CONTROL_AUTOFD |
 159                                   PARPORT_CONTROL_INIT |
 160                                   PARPORT_CONTROL_SELECT);
 161         const struct parport_pc_private *priv = p->physport->private_data;
 162         return priv->ctr & rm; /* Use soft copy */
 163 }
 164
 165 static __inline__ unsigned char parport_pc_frob_control (struct parport *p,
 166                                                          unsigned char mask,
 167                                                          unsigned char val)
 168 {
 169         const unsigned char wm = (PARPORT_CONTROL_STROBE |
 170                                   PARPORT_CONTROL_AUTOFD |
 171                                   PARPORT_CONTROL_INIT |
 172                                   PARPORT_CONTROL_SELECT);
 173
 174         /* Take this out when drivers have adapted to newer interface. */
 175         if (mask & 0x20) {
 176                 printk (KERN_DEBUG "%s (%s): use data_%s for this!\n",
 177                         p->name, p->cad->name,
 178                         (val & 0x20) ? "reverse" : "forward");
 179                 if (val & 0x20)
 180                         parport_pc_data_reverse (p);
 181                 else
 182                         parport_pc_data_forward (p);
 183         }
 184
 185         /* Restrict mask and val to control lines. */
 186         mask &= wm;
 187         val &= wm;
 188
 189         return __parport_pc_frob_control (p, mask, val);
 190 }
 191
 192 static __inline__ unsigned char parport_pc_read_status(struct parport *p)
 193 {
 194         return inb(STATUS(p));
 195 }
 196
 197
 198 static __inline__ void parport_pc_disable_irq(struct parport *p)
 199 {
 200         __parport_pc_frob_control (p, 0x10, 0x00);
 201 }
 202
 203 static __inline__ void parport_pc_enable_irq(struct parport *p)
 204 {
 205         __parport_pc_frob_control (p, 0x10, 0x10);
 206 }
 207
 208 extern void parport_pc_release_resources(struct parport *p);
 209
 210 extern int parport_pc_claim_resources(struct parport *p);
 211
 212 extern void parport_pc_init_state(struct pardevice *, struct parport_state *s);
 213
 214 extern void parport_pc_save_state(struct parport *p, struct parport_state *s);
 215
 216 extern void parport_pc_restore_state(struct parport *p, struct parport_state *s);
 217
 218 extern void parport_pc_inc_use_count(void);
 219
 220 extern void parport_pc_dec_use_count(void);
 221
 222 /* PCMCIA code will want to get us to look at a port.  Provide a mechanism. */
 223 extern struct parport *parport_pc_probe_port (unsigned long base,
 224                                               unsigned long base_hi,
 225                                               int irq, int dma,
 226                                               struct pci_dev *dev);
 227 extern void parport_pc_unregister_port (struct parport *p);
 228
 229 #endif