1 | /* $ZEL: sis1100_open.c,v 1.5 2004/02/10 16:29:44 wuestner Exp $ */
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2 |
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3 | /*
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4 | * Copyright (c) 2001-2004 Peter Wuestner. All rights reserved.
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5 | *
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6 | * Redistribution and use in source and binary forms, with or without
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7 | * modification, are permitted provided that the following conditions
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8 | * are met:
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9 | * 1. Redistributions of source code must retain the above copyright
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10 | * notice, this list of conditions, and the following disclaimer.
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11 | * 2. Redistributions in binary form must reproduce the above copyright
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12 | * notice, this list of conditions and the following disclaimer in the
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13 | * documentation and/or other materials provided with the distribution.
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14 | *
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15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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16 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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19 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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20 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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21 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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22 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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23 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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24 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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25 | * SUCH DAMAGE.
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26 | */
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27 |
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28 | #include "sis1100_sc.h"
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29 |
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30 | static void
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31 | _sis1100_open(struct sis1100_softc* sc, struct sis1100_fdata* fd, int idx)
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32 | {
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33 | SEM_LOCK(sc->sem_fdata_list);
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34 | list_add(&fd->list, &sc->fdata_list_head);
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35 | SEM_UNLOCK(sc->sem_fdata_list);
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36 |
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37 | fd->fifo_mode=0; /* can't be changed for sdram and sharc */
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38 | fd->vmespace_am=9; /* useless for sdram and sharc */
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39 | fd->vmespace_datasize=4; /* useless for sdram and sharc */
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40 | fd->last_prot_err=0;
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41 | fd->sig=0;
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42 | fd->owned_irqs=0; /* useless for sdram and sharc */
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43 | fd->mindmalen_r=24;
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44 | fd->mindmalen_w=400;
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45 | fd->mmapdma.valid=0;
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46 | sc->fdatalist[idx]=fd;
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47 | }
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48 |
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49 | #ifdef __NetBSD__
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50 | int
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51 | sis1100_open(dev_t dev, int flag, int mode, struct proc *p)
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52 | {
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53 | struct sis1100_softc* sc;
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54 | struct sis1100_fdata* fd;
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55 | unsigned int _minor=minor(dev);
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56 | unsigned int card=(_minor&sis1100_MINORCARDMASK)>>sis1100_MINORCARDSHIFT;
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57 | unsigned int subdev=(_minor&sis1100_MINORTYPEMASK)>>sis1100_MINORTYPESHIFT;
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58 | unsigned int idx=_minor&(sis1100_MINORUTMASK);
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59 |
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60 | if (card >= sis1100cfdriver.cd_ndevs || !sis1100cfdriver.cd_devs[card]) {
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61 | pINFOsc("open: _minor=%d card=%d idx=%d, returning ENXIO",
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62 | _minor, card, idx);
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63 | return ENXIO;
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64 | }
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65 |
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66 | sc=SIS1100SC(dev);
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67 |
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68 | if (sc->fdatalist[idx])
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69 | return EBUSY;
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70 |
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71 | fd=malloc(sizeof(struct sis1100_fdata), M_DEVBUF, M_WAITOK);
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72 | if (!fd) return ENOMEM;
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73 | fd->p=p;
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74 |
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75 | fd->sig=0;
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76 | fd->subdev=subdev;
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77 |
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78 | simple_lock(&sc->lock_sc_inuse);
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79 | sc->sc_inuse++;
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80 | simple_unlock(&sc->sc_inuse);
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81 |
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82 | sc->fdatalist[idx]=fd;
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83 | _sis1100_open(sc, fd, idx);
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84 |
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85 | return 0;
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86 | }
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87 |
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88 | #elif __linux__
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89 |
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90 | int
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91 | sis1100_open(struct inode *inode, struct file *file)
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92 | {
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93 | struct sis1100_softc* sc;
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94 | struct sis1100_fdata* fd;
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95 | unsigned int _minor=iminor(inode);
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96 | unsigned int card=(_minor&sis1100_MINORCARDMASK)>>sis1100_MINORCARDSHIFT;
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97 | unsigned int subdev=(_minor&sis1100_MINORTYPEMASK)>>sis1100_MINORTYPESHIFT;
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98 | unsigned int idx=_minor&sis1100_MINORUTMASK;
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99 |
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100 | if (card >= sis1100_MAXCARDS || !sis1100_devdata[card]) {
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101 | printk(KERN_INFO "sis1100 open: returning ENXIO\n");
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102 | return -ENXIO; /*ENODEV*/
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103 | }
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104 | sc=sis1100_devdata[card];
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105 |
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106 | if (sc->fdatalist[idx]) {
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107 | return -EBUSY;
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108 | }
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109 |
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110 | fd=kmalloc(sizeof(struct sis1100_fdata), GFP_KERNEL);
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111 | if (!fd) return -ENOMEM;
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112 | fd->sc=sc;
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113 | fd->subdev=subdev;
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114 | file->private_data = fd;
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115 |
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116 | _sis1100_open(sc, fd, idx);
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117 |
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118 | return 0;
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119 | }
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120 | #endif
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121 |
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122 | static void
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123 | _sis1100_close(struct sis1100_softc* sc, struct sis1100_fdata* fd, int idx)
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124 | {
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125 | u_int32_t mask;
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126 |
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127 | switch (sc->remote_hw) {
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128 | case sis1100_hw_vme:
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129 | if (fd->owned_irqs & SIS3100_IRQS) {
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130 | sis3100writeremreg(sc, vme_irq_sc,
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131 | (fd->owned_irqs & SIS3100_IRQS)<<16, 0);
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132 | }
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133 | break;
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134 | case sis1100_hw_camac:
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135 | if (fd->owned_irqs & SIS5100_IRQS) {
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136 | /*sis5100writeremreg(sc, vme_irq_sc,
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137 | (fd->owned_irqs & SIS5100_IRQS)<<16, 0);*/
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138 | }
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139 | break;
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140 | case sis1100_hw_pci: break; /* do nothing */
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141 | case sis1100_hw_f1: break; /* do nothing */
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142 | case sis1100_hw_vertex: break; /* do nothing */
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143 | case sis1100_hw_invalid: break; /* do nothing */
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144 | }
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145 |
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146 | mask=0;
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147 | if (fd->owned_irqs & SIS1100_FRONT_IRQS) {
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148 | mask|=(fd->owned_irqs & SIS1100_FRONT_IRQS)>>4;
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149 | }
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150 | if (fd->owned_irqs & SIS1100_MBX0_IRQ) {
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151 | mask|=irq_mbx0;
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152 | }
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153 | if (mask) sis1100_disable_irq(sc, 0, mask);
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154 |
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155 | /*if (fd->mmapdma.valid) sis1100_dma_free(sc, fd, 0);*/
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156 | SEM_LOCK(sc->sem_fdata_list);
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157 | list_del(&fd->list);
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158 | SEM_UNLOCK(sc->sem_fdata_list);
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159 | sc->fdatalist[idx]=0;
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160 | }
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161 |
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162 | #ifdef __NetBSD__
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163 | int
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164 | sis1100_close(dev_t dev, int flag, int mode, struct proc *p)
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165 | {
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166 | struct sis1100_softc* sc=SIS1100SC(dev);
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167 | struct sis1100_fdata* fd=SIS1100FD(dev);
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168 | unsigned int minor=minor(dev);
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169 | unsigned int idx=minor&(sis1100_MINORUTMASK);
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170 |
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171 |
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172 | _sis1100_close(sc, fd, idx);
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173 |
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174 | free(fd, M_DEVBUF);
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175 | simple_lock(&sc->lock_sc_inuse);
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176 | sc->sc_inuse--;
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177 | simple_unlock(&sc->sc_inuse);
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178 | return 0;
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179 | }
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180 | #elif __linux__
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181 | int
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182 | sis1100_release(struct inode *inode, struct file *file)
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183 | {
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184 | struct sis1100_softc* sc=SIS1100SC(file);
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185 | struct sis1100_fdata* fd=SIS1100FD(file);
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186 | unsigned int _minor=iminor(inode);
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187 | unsigned int idx=_minor&(sis1100_MINORUTMASK);
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188 |
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189 | _sis1100_close(sc, fd, idx);
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190 |
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191 | kfree(fd);
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192 | return 0;
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193 | }
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194 | #endif
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