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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef __LINUX_PARPORT_PC_H |
| 2 | #define __LINUX_PARPORT_PC_H |
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| 3 | |||
| 4 | #include <asm/io.h> |
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| 5 | |||
| 6 | /* --- register definitions ------------------------------- */ |
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| 7 | |||
| 8 | #define ECONTROL(p) ((p)->base_hi + 0x2) |
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| 9 | #define CONFIGB(p) ((p)->base_hi + 0x1) |
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| 10 | #define CONFIGA(p) ((p)->base_hi + 0x0) |
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| 11 | #define FIFO(p) ((p)->base_hi + 0x0) |
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| 12 | #define EPPDATA(p) ((p)->base + 0x4) |
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| 13 | #define EPPADDR(p) ((p)->base + 0x3) |
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| 14 | #define CONTROL(p) ((p)->base + 0x2) |
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| 15 | #define STATUS(p) ((p)->base + 0x1) |
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| 16 | #define DATA(p) ((p)->base + 0x0) |
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| 17 | |||
| 18 | struct parport_pc_private { |
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| 19 | /* Contents of CTR. */ |
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| 20 | unsigned char ctr; |
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| 21 | |||
| 22 | /* Bitmask of writable CTR bits. */ |
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| 23 | unsigned char ctr_writable; |
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| 24 | |||
| 25 | /* Whether or not there's an ECR. */ |
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| 26 | int ecr; |
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| 27 | |||
| 28 | /* Number of PWords that FIFO will hold. */ |
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| 29 | int fifo_depth; |
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| 30 | |||
| 31 | /* Number of bytes per portword. */ |
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| 32 | int pword; |
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| 33 | |||
| 34 | /* Not used yet. */ |
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| 35 | int readIntrThreshold; |
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| 36 | int writeIntrThreshold; |
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| 37 | |||
| 38 | /* buffer suitable for DMA, if DMA enabled */ |
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| 39 | char *dma_buf; |
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| 40 | dma_addr_t dma_handle; |
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| 41 | struct pci_dev *dev; |
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| 42 | }; |
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| 43 | |||
| 44 | extern __inline__ void parport_pc_write_data(struct parport *p, unsigned char d) |
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| 45 | { |
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| 46 | #ifdef DEBUG_PARPORT |
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| 47 | printk (KERN_DEBUG "parport_pc_write_data(%p,0x%02x)\n", p, d); |
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| 48 | #endif |
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| 49 | outb(d, DATA(p)); |
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| 50 | } |
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| 51 | |||
| 52 | extern __inline__ unsigned char parport_pc_read_data(struct parport *p) |
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| 53 | { |
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| 54 | unsigned char val = inb (DATA (p)); |
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| 55 | #ifdef DEBUG_PARPORT |
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| 56 | printk (KERN_DEBUG "parport_pc_read_data(%p) = 0x%02x\n", |
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| 57 | p, val); |
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| 58 | #endif |
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| 59 | return val; |
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| 60 | } |
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| 61 | |||
| 62 | #ifdef DEBUG_PARPORT |
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| 63 | extern __inline__ void dump_parport_state (char *str, struct parport *p) |
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| 64 | { |
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| 65 | /* here's hoping that reading these ports won't side-effect anything underneath */ |
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| 66 | unsigned char ecr = inb (ECONTROL (p)); |
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| 67 | unsigned char dcr = inb (CONTROL (p)); |
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| 68 | unsigned char dsr = inb (STATUS (p)); |
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| 69 | static char *ecr_modes[] = {"SPP", "PS2", "PPFIFO", "ECP", "xXx", "yYy", "TST", "CFG"}; |
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| 70 | const struct parport_pc_private *priv = (parport_pc_private *)p->physport->private_data; |
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| 71 | int i; |
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| 72 | |||
| 73 | printk (KERN_DEBUG "*** parport state (%s): ecr=[%s", str, ecr_modes[(ecr & 0xe0) >> 5]); |
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| 74 | if (ecr & 0x10) printk (",nErrIntrEn"); |
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| 75 | if (ecr & 0x08) printk (",dmaEn"); |
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| 76 | if (ecr & 0x04) printk (",serviceIntr"); |
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| 77 | if (ecr & 0x02) printk (",f_full"); |
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| 78 | if (ecr & 0x01) printk (",f_empty"); |
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| 79 | for (i=0; i<2; i++) { |
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| 80 | printk ("] dcr(%s)=[", i ? "soft" : "hard"); |
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| 81 | dcr = i ? priv->ctr : inb (CONTROL (p)); |
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| 82 | |||
| 83 | if (dcr & 0x20) { |
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| 84 | printk ("rev"); |
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| 85 | } else { |
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| 86 | printk ("fwd"); |
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| 87 | } |
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| 88 | if (dcr & 0x10) printk (",ackIntEn"); |
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| 89 | if (!(dcr & 0x08)) printk (",N-SELECT-IN"); |
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| 90 | if (dcr & 0x04) printk (",N-INIT"); |
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| 91 | if (!(dcr & 0x02)) printk (",N-AUTOFD"); |
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| 92 | if (!(dcr & 0x01)) printk (",N-STROBE"); |
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| 93 | } |
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| 94 | printk ("] dsr=["); |
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| 95 | if (!(dsr & 0x80)) printk ("BUSY"); |
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| 96 | if (dsr & 0x40) printk (",N-ACK"); |
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| 97 | if (dsr & 0x20) printk (",PERROR"); |
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| 98 | if (dsr & 0x10) printk (",SELECT"); |
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| 99 | if (dsr & 0x08) printk (",N-FAULT"); |
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| 100 | printk ("]\n"); |
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| 101 | return; |
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| 102 | } |
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| 103 | #else /* !DEBUG_PARPORT */ |
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| 104 | #define dump_parport_state(args...) |
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| 105 | #endif /* !DEBUG_PARPORT */ |
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| 106 | |||
| 107 | /* __parport_pc_frob_control differs from parport_pc_frob_control in that |
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| 108 | * it doesn't do any extra masking. */ |
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| 109 | static __inline__ unsigned char __parport_pc_frob_control (struct parport *p, |
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| 110 | unsigned char mask, |
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| 111 | unsigned char val) |
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| 112 | { |
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| 113 | struct parport_pc_private *priv = p->physport->private_data; |
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| 114 | unsigned char ctr = priv->ctr; |
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| 115 | #ifdef DEBUG_PARPORT |
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| 116 | printk (KERN_DEBUG |
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| 117 | "__parport_pc_frob_control(%02x,%02x): %02x -> %02x\n", |
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| 118 | mask, val, ctr, ((ctr & ~mask) ^ val) & priv->ctr_writable); |
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| 119 | #endif |
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| 120 | ctr = (ctr & ~mask) ^ val; |
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| 121 | ctr &= priv->ctr_writable; /* only write writable bits. */ |
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| 122 | outb (ctr, CONTROL (p)); |
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| 123 | priv->ctr = ctr; /* Update soft copy */ |
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| 124 | return ctr; |
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| 125 | } |
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| 126 | |||
| 127 | extern __inline__ void parport_pc_data_reverse (struct parport *p) |
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| 128 | { |
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| 129 | __parport_pc_frob_control (p, 0x20, 0x20); |
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| 130 | } |
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| 131 | |||
| 132 | extern __inline__ void parport_pc_data_forward (struct parport *p) |
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| 133 | { |
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| 134 | __parport_pc_frob_control (p, 0x20, 0x00); |
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| 135 | } |
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| 136 | |||
| 137 | extern __inline__ void parport_pc_write_control (struct parport *p, |
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| 138 | unsigned char d) |
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| 139 | { |
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| 140 | const unsigned char wm = (PARPORT_CONTROL_STROBE | |
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| 141 | PARPORT_CONTROL_AUTOFD | |
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| 142 | PARPORT_CONTROL_INIT | |
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| 143 | PARPORT_CONTROL_SELECT); |
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| 144 | |||
| 145 | /* Take this out when drivers have adapted to newer interface. */ |
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| 146 | if (d & 0x20) { |
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| 147 | printk (KERN_DEBUG "%s (%s): use data_reverse for this!\n", |
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| 148 | p->name, p->cad->name); |
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| 149 | parport_pc_data_reverse (p); |
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| 150 | } |
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| 151 | |||
| 152 | __parport_pc_frob_control (p, wm, d & wm); |
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| 153 | } |
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| 154 | |||
| 155 | extern __inline__ unsigned char parport_pc_read_control(struct parport *p) |
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| 156 | { |
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| 157 | const unsigned char rm = (PARPORT_CONTROL_STROBE | |
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| 158 | PARPORT_CONTROL_AUTOFD | |
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| 159 | PARPORT_CONTROL_INIT | |
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| 160 | PARPORT_CONTROL_SELECT); |
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| 161 | const struct parport_pc_private *priv = p->physport->private_data; |
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| 162 | return priv->ctr & rm; /* Use soft copy */ |
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| 163 | } |
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| 164 | |||
| 165 | extern __inline__ unsigned char parport_pc_frob_control (struct parport *p, |
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| 166 | unsigned char mask, |
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| 167 | unsigned char val) |
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| 168 | { |
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| 169 | const unsigned char wm = (PARPORT_CONTROL_STROBE | |
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| 170 | PARPORT_CONTROL_AUTOFD | |
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| 171 | PARPORT_CONTROL_INIT | |
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| 172 | PARPORT_CONTROL_SELECT); |
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| 173 | |||
| 174 | /* Take this out when drivers have adapted to newer interface. */ |
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| 175 | if (mask & 0x20) { |
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| 176 | printk (KERN_DEBUG "%s (%s): use data_%s for this!\n", |
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| 177 | p->name, p->cad->name, |
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| 178 | (val & 0x20) ? "reverse" : "forward"); |
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| 179 | if (val & 0x20) |
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| 180 | parport_pc_data_reverse (p); |
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| 181 | else |
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| 182 | parport_pc_data_forward (p); |
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| 183 | } |
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| 184 | |||
| 185 | /* Restrict mask and val to control lines. */ |
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| 186 | mask &= wm; |
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| 187 | val &= wm; |
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| 188 | |||
| 189 | return __parport_pc_frob_control (p, mask, val); |
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| 190 | } |
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| 191 | |||
| 192 | extern __inline__ unsigned char parport_pc_read_status(struct parport *p) |
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| 193 | { |
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| 194 | return inb(STATUS(p)); |
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| 195 | } |
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| 196 | |||
| 197 | |||
| 198 | extern __inline__ void parport_pc_disable_irq(struct parport *p) |
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| 199 | { |
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| 200 | __parport_pc_frob_control (p, 0x10, 0x00); |
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| 201 | } |
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| 202 | |||
| 203 | extern __inline__ void parport_pc_enable_irq(struct parport *p) |
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| 204 | { |
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| 205 | __parport_pc_frob_control (p, 0x10, 0x10); |
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| 206 | } |
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| 207 | |||
| 208 | extern void parport_pc_release_resources(struct parport *p); |
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| 209 | |||
| 210 | extern int parport_pc_claim_resources(struct parport *p); |
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| 211 | |||
| 212 | extern void parport_pc_init_state(struct pardevice *, struct parport_state *s); |
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| 213 | |||
| 214 | extern void parport_pc_save_state(struct parport *p, struct parport_state *s); |
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| 215 | |||
| 216 | extern void parport_pc_restore_state(struct parport *p, struct parport_state *s); |
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| 217 | |||
| 218 | /* PCMCIA code will want to get us to look at a port. Provide a mechanism. */ |
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| 219 | extern struct parport *parport_pc_probe_port (unsigned long base, |
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| 220 | unsigned long base_hi, |
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| 221 | int irq, int dma, |
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| 222 | struct pci_dev *dev); |
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| 223 | extern void parport_pc_unregister_port (struct parport *p); |
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| 224 | |||
| 225 | #endif |