xref: /minix3/minix/drivers/audio/es1371/wait.c (revision 433d6423c39e34ec4b79c950597bb2d236f886be)
1*433d6423SLionel Sambuc #include <minix/drivers.h>
2*433d6423SLionel Sambuc #include <sys/types.h>
3*433d6423SLionel Sambuc #include "pci_helper.h"
4*433d6423SLionel Sambuc 
5*433d6423SLionel Sambuc 
WaitBitd(int paddr,int bitno,int state,long tmout)6*433d6423SLionel Sambuc int WaitBitd (int paddr, int bitno, int state, long tmout)
7*433d6423SLionel Sambuc {
8*433d6423SLionel Sambuc         unsigned long mask;
9*433d6423SLionel Sambuc 
10*433d6423SLionel Sambuc 	mask = 1UL << bitno;
11*433d6423SLionel Sambuc 	tmout *= 5000;
12*433d6423SLionel Sambuc 
13*433d6423SLionel Sambuc 	if(state) {
14*433d6423SLionel Sambuc     while(tmout-- > 0) {
15*433d6423SLionel Sambuc 	    if(pci_inl(paddr) & mask) {
16*433d6423SLionel Sambuc 	      return 0;
17*433d6423SLionel Sambuc 	    }
18*433d6423SLionel Sambuc 	  }
19*433d6423SLionel Sambuc 	}	else {
20*433d6423SLionel Sambuc     while(tmout-- > 0) {
21*433d6423SLionel Sambuc 	    if(!(pci_inl(paddr) & mask)) {
22*433d6423SLionel Sambuc 	      return 0;
23*433d6423SLionel Sambuc 	    }
24*433d6423SLionel Sambuc 	  }
25*433d6423SLionel Sambuc 	}
26*433d6423SLionel Sambuc 	return 0;
27*433d6423SLionel Sambuc }
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