| 1 | /* ad.c 4.5 82/10/10 */ |
| 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" |
| 15 | |
| 16 | #include "../vaxuba/ubareg.h" |
| 17 | #include "../vaxuba/ubavar.h" |
| 18 | #include "../vaxuba/adreg.h" |
| 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; |
| 51 | return (sizeof (struct addevice)); |
| 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) { |
| 97 | |
| 98 | case ADIOSCHAN: |
| 99 | adp = &ad[ADUNIT(dev)]; |
| 100 | adp->ad_chan = (*(int *)data)<<8; |
| 101 | break; |
| 102 | |
| 103 | case ADIOGETW: |
| 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(); |
| 117 | *(int *)data = adp->ad_softdata; |
| 118 | break; |
| 119 | |
| 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 |