projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 896962b1 | 1 | /* ad.c 4.5 82/10/10 */ |
| 1416af58 SL |
2 | |
| 3 | #include "ad.h" | |
| 4 | #if NAD > 0 | |
| 5 | /* | |
| 6 | * Data translation AD converter interface -- Bill Reeves | |
| 7 | */ | |
| 8 | #include "../h/param.h" | |
| 9 | #include "../h/dir.h" | |
| 10 | #include "../h/user.h" | |
| 11 | #include "../h/buf.h" | |
| 12 | #include "../h/systm.h" | |
| 13 | #include "../h/map.h" | |
| 14 | #include "../h/pte.h" | |
| 896962b1 BJ |
15 | |
| 16 | #include "../vaxuba/ubareg.h" | |
| 17 | #include "../vaxuba/ubavar.h" | |
| 18 | #include "../vaxuba/adreg.h" | |
| 1416af58 SL |
19 | |
| 20 | #define ADBUSY 01 | |
| 21 | #define ADWAITPRI (PZERO+1) | |
| 22 | ||
| 23 | int adprobe(), adattach(); | |
| 24 | struct uba_device *addinfo[NAD]; | |
| 25 | u_short adstd[] = { 0770400, 0000000, 0 }; | |
| 26 | struct uba_driver addriver = | |
| 27 | { adprobe, 0, adattach, 0, adstd, "ad", addinfo, 0, 0 }; | |
| 28 | ||
| 29 | struct ad { | |
| 30 | char ad_open; | |
| 31 | short int ad_uid; | |
| 32 | short int ad_state; | |
| 33 | short int ad_softcsr; | |
| 34 | short int ad_softdata; | |
| 35 | short int ad_chan; | |
| 36 | int ad_icnt; | |
| 37 | int ad_loop; | |
| 38 | } ad[NAD]; | |
| 39 | ||
| 40 | #define ADUNIT(dev) (minor(dev)) | |
| 41 | ||
| 42 | adprobe(reg) | |
| 43 | caddr_t reg; | |
| 44 | { | |
| 45 | register int br, cvec; | |
| 46 | register struct addevice *adaddr = (struct addevice *) reg; | |
| 47 | ||
| 48 | adaddr->ad_csr = AD_IENABLE | AD_START; | |
| 49 | DELAY(40000); | |
| 50 | adaddr->ad_csr = 0; | |
| 9c0adba0 | 51 | return (sizeof (struct addevice)); |
| 1416af58 SL |
52 | } |
| 53 | ||
| 54 | adattach(ui) | |
| 55 | struct uba_device *ui; | |
| 56 | { | |
| 57 | } | |
| 58 | ||
| 59 | adopen(dev) | |
| 60 | dev_t dev; | |
| 61 | { | |
| 62 | register struct ad *adp; | |
| 63 | register struct uba_device *ui; | |
| 64 | ||
| 65 | if(ADUNIT(dev) >= NAD || (adp = &ad[ADUNIT(dev)])->ad_open || | |
| 66 | (ui = addinfo[ADUNIT(dev)]) == 0 || ui->ui_alive == 0) { | |
| 67 | u.u_error = ENXIO; | |
| 68 | return; | |
| 69 | } | |
| 70 | adp->ad_open = 1; | |
| 71 | adp->ad_icnt = 0; | |
| 72 | adp->ad_state = 0; | |
| 73 | adp->ad_uid = u.u_uid; | |
| 74 | } | |
| 75 | ||
| 76 | adclose(dev) | |
| 77 | dev_t dev; | |
| 78 | { | |
| 79 | ||
| 80 | ad[ADUNIT(dev)].ad_open = 0; | |
| 81 | ad[ADUNIT(dev)].ad_state = 0; | |
| 82 | } | |
| 83 | ||
| 84 | /*ARGSUSED*/ | |
| 85 | adioctl(dev, cmd, addr, flag) | |
| 86 | dev_t dev; | |
| 87 | register caddr_t addr; | |
| 88 | { | |
| 89 | register struct addevice *adaddr = | |
| 90 | (struct addevice *) addinfo[ADUNIT(dev)]->ui_addr; | |
| 91 | register struct uba_device *ui = addinfo[ADUNIT(dev)]; | |
| 92 | register struct ad *adp; | |
| 93 | register int i; | |
| 94 | short int chan; | |
| 95 | ||
| 96 | switch (cmd) { | |
| 942f05a9 SL |
97 | |
| 98 | case ADIOSCHAN: | |
| 1416af58 | 99 | adp = &ad[ADUNIT(dev)]; |
| 942f05a9 | 100 | adp->ad_chan = (*(int *)data)<<8; |
| 1416af58 | 101 | break; |
| 942f05a9 SL |
102 | |
| 103 | case ADIOGETW: | |
| 1416af58 SL |
104 | adp = &ad[ADUNIT(dev)]; |
| 105 | spl6(); | |
| 106 | adaddr->ad_csr = adp->ad_chan; | |
| 107 | i = 1000; | |
| 108 | while(i-- > 0 && (adaddr->ad_csr&037400) != adp->ad_chan) { | |
| 109 | adp->ad_loop++; | |
| 110 | adaddr->ad_csr = adp->ad_chan; | |
| 111 | } | |
| 112 | adp->ad_state |= ADBUSY; | |
| 113 | adaddr->ad_csr |= AD_IENABLE|AD_START; | |
| 114 | while(adp->ad_state&ADBUSY) | |
| 115 | sleep((caddr_t)adp, ADWAITPRI); | |
| 116 | spl0(); | |
| 942f05a9 | 117 | *(int *)data = adp->ad_softdata; |
| 1416af58 | 118 | break; |
| 942f05a9 | 119 | |
| 1416af58 SL |
120 | default: |
| 121 | u.u_error = ENOTTY; /* Not a legal ioctl cmd. */ | |
| 122 | } | |
| 123 | } | |
| 124 | ||
| 125 | /*ARGSUSED*/ | |
| 126 | adintr(dev) | |
| 127 | dev_t dev; | |
| 128 | { | |
| 129 | register struct addevice *adaddr = | |
| 130 | (struct addevice *) addinfo[ADUNIT(dev)]->ui_addr; | |
| 131 | register struct ad *adp = &ad[ADUNIT(dev)]; | |
| 132 | ||
| 133 | adp->ad_icnt++; | |
| 134 | adp->ad_softcsr = adaddr->ad_csr; | |
| 135 | adp->ad_softdata = adaddr->ad_data; | |
| 136 | if(adp->ad_state&ADBUSY) { | |
| 137 | adp->ad_state &= ~ADBUSY; | |
| 138 | wakeup((caddr_t)adp); | |
| 139 | } | |
| 140 | } | |
| 141 | ||
| 142 | adreset(uban) | |
| 143 | int uban; | |
| 144 | { | |
| 145 | register int i; | |
| 146 | register struct uba_device *ui; | |
| 147 | register struct ad *adp = ad; | |
| 148 | register struct addevice *adaddr; | |
| 149 | ||
| 150 | for(i = 0; i < NAD; i++, adp++) { | |
| 151 | if((ui = addinfo[i]) == 0 || ui->ui_alive == 0 || | |
| 152 | ui->ui_ubanum != uban || adp->ad_open == 0) | |
| 153 | continue; | |
| 154 | printf(" ad%d", i); | |
| 155 | if(adp->ad_state&ADBUSY == 0) | |
| 156 | continue; | |
| 157 | adaddr = (struct addevice *) ui->ui_addr; | |
| 158 | adaddr->ad_csr = 0; | |
| 159 | adaddr->ad_csr = adp->ad_chan|AD_IENABLE|AD_START; | |
| 160 | } | |
| 161 | } | |
| 162 | #endif |