mirror of
https://github.com/slsdetectorgroup/slsDetectorPackage.git
synced 2025-04-26 00:00:02 +02:00
107 lines
2.5 KiB
C
Executable File
107 lines
2.5 KiB
C
Executable File
#include "nios.h"
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#include "RegisterDefs.h"
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#include "sls_detector_defs.h"
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#include "ansi.h"
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#include "clogger.h"
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#include <fcntl.h> // open
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#include <sys/mman.h> // mmap
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/* global variables */
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u_int32_t* csp0base = 0;
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#define CSP0 0x18000000
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#define MEM_SIZE 0x100000
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void bus_w(u_int32_t offset, u_int32_t data) {
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volatile u_int32_t *ptr1;
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ptr1=(u_int32_t*)(csp0base + offset/(sizeof(u_int32_t)));
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*ptr1=data;
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}
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u_int32_t bus_r(u_int32_t offset) {
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volatile u_int32_t *ptr1;
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ptr1=(u_int32_t*)(csp0base+ offset/(sizeof(u_int32_t)));
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return *ptr1;
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}
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int64_t get64BitReg(int aLSB, int aMSB){
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int64_t v64;
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u_int32_t vLSB,vMSB;
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vLSB=bus_r(aLSB);
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vMSB=bus_r(aMSB);
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v64=vMSB;
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v64=(v64<<32) | vLSB;
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FILE_LOG(logDEBUG5, (" reg64(%x,%x) %x %x %llx\n", aLSB, aMSB, vLSB, vMSB, (long long unsigned int)v64));
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return v64;
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}
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int64_t set64BitReg(int64_t value, int aLSB, int aMSB){
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int64_t v64;
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u_int32_t vLSB,vMSB;
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if (value!=-1) {
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vLSB=value&(0xffffffff);
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bus_w(aLSB,vLSB);
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v64=value>> 32;
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vMSB=v64&(0xffffffff);
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bus_w(aMSB,vMSB);
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}
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return get64BitReg(aLSB, aMSB);
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}
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uint64_t getU64BitReg(int aLSB, int aMSB){
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uint64_t retval = bus_r(aMSB);
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retval = (retval << 32) | bus_r(aLSB);
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return retval;
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}
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void setU64BitReg(uint64_t value, int aLSB, int aMSB){
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bus_w(aLSB, value & (0xffffffff));
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bus_w(aMSB, (value >> 32) & (0xffffffff));
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}
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u_int32_t readRegister(u_int32_t offset) {
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return bus_r(offset << MEM_MAP_SHIFT);
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}
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u_int32_t writeRegister(u_int32_t offset, u_int32_t data) {
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bus_w(offset << MEM_MAP_SHIFT, data);
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return readRegister(offset);
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}
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int mapCSP0(void) {
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// if not mapped
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if (csp0base == 0) {
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FILE_LOG(logINFO, ("Mapping memory\n"));
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#ifdef VIRTUAL
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csp0base = malloc(MEM_SIZE);
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if (csp0base == NULL) {
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FILE_LOG(logERROR, ("Could not allocate virtual memory.\n"));
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return FAIL;
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}
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FILE_LOG(logINFO, ("memory allocated\n"));
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#else
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int fd = open("/dev/mem", O_RDWR | O_SYNC, 0);
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if (fd == -1) {
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FILE_LOG(logERROR, ("Can't find /dev/mem\n"));
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return FAIL;
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}
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FILE_LOG(logDEBUG1, ("/dev/mem opened\n"));
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csp0base = (u_int32_t*)mmap(0, MEM_SIZE, PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED, fd, CSP0);
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if (csp0base == MAP_FAILED) {
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FILE_LOG(logERROR, ("Can't map memmory area\n"));
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return FAIL;
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}
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#endif
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FILE_LOG(logINFO, ("CSPOBASE mapped from 0x%p to 0x%p\n",
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csp0base, csp0base+MEM_SIZE));
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//FILE_LOG(logINFO, ("Status Register: %08x\n", bus_r(STATUS_REG)));
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}else
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FILE_LOG(logINFO, ("Memory already mapped before\n"));
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return OK;
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}
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