Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 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 | extern __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 | extern __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 | extern __inline__ void parport_pc_data_reverse (struct parport *p) |
||
| 128 | { |
||
| 129 | __parport_pc_frob_control (p, 0x20, 0x20); |
||
| 130 | } |
||
| 131 | |||
| 132 | extern __inline__ void parport_pc_data_forward (struct parport *p) |
||
| 133 | { |
||
| 134 | __parport_pc_frob_control (p, 0x20, 0x00); |
||
| 135 | } |
||
| 136 | |||
| 137 | extern __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 | extern __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 | extern __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 | extern __inline__ unsigned char parport_pc_read_status(struct parport *p) |
||
| 193 | { |
||
| 194 | return inb(STATUS(p)); |
||
| 195 | } |
||
| 196 | |||
| 197 | |||
| 198 | extern __inline__ void parport_pc_disable_irq(struct parport *p) |
||
| 199 | { |
||
| 200 | __parport_pc_frob_control (p, 0x10, 0x00); |
||
| 201 | } |
||
| 202 | |||
| 203 | extern __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 | /* PCMCIA code will want to get us to look at a port. Provide a mechanism. */ |
||
| 219 | extern struct parport *parport_pc_probe_port (unsigned long base, |
||
| 220 | unsigned long base_hi, |
||
| 221 | int irq, int dma, |
||
| 222 | struct pci_dev *dev); |
||
| 223 | extern void parport_pc_unregister_port (struct parport *p); |
||
| 224 | |||
| 225 | #endif |