| Line 39... |
Line 39... |
#include "spr_defs.h"
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#include "spr_defs.h"
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#include "pic.h"
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#include "pic.h"
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#include "sprs.h"
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#include "sprs.h"
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#include "sim-config.h"
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#include "sim-config.h"
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#include "sched.h"
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#include "sched.h"
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#include "debug.h"
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DEFAULT_DEBUG_CHANNEL(tick);
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/* When did the timer start to count */
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/* When did the timer start to count */
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int cycles_start = 0;
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int cycles_start = 0;
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/* TT Count Register */
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/* TT Count Register */
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| Line 62... |
Line 65... |
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/* Job handler for tick timer */
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/* Job handler for tick timer */
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void tick_job (void *param)
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void tick_job (void *param)
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{
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{
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int mode = (ttmr & SPR_TTMR_M) >> 30;
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int mode = (ttmr & SPR_TTMR_M) >> 30;
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/*debug (7, "tick_job%i, param %i\n", param, mode);*/
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TRACE("tick_job param: %i, mode: %i at %lli (%lli)\n", (int)param, mode,
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runtime.sim.cycles, runtime.cpu.instructions);
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switch (mode) {
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switch (mode) {
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case 1:
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case 1:
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if (!param) {
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if (!param) {
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sprs[SPR_TTCR] = ttcr = 0;
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sprs[SPR_TTCR] = ttcr = 0;
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cycles_start = runtime.sim.cycles - ttcr;
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cycles_start = runtime.sim.cycles - ttcr;
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TRACE("Scheduleing timer job for %li\n", (ttmr & SPR_TTMR_PERIOD) - ttcr);
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SCHED_ADD(tick_job, (void *)0, (ttmr & SPR_TTMR_PERIOD) - ttcr);
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SCHED_ADD(tick_job, (void *)0, (ttmr & SPR_TTMR_PERIOD) - ttcr);
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}
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}
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case 2:
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case 2:
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if (ttmr & SPR_TTMR_IE) {
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if (ttmr & SPR_TTMR_IE) {
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setsprbits(SPR_TTMR, SPR_TTMR_IP, 1);
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setsprbits(SPR_TTMR, SPR_TTMR_IP, 1);
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| Line 89... |
Line 94... |
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/* Starts the tick timer. This function is called by a write to ttcr spr register */
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/* Starts the tick timer. This function is called by a write to ttcr spr register */
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void spr_write_ttcr (unsigned long value)
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void spr_write_ttcr (unsigned long value)
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{
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{
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unsigned mode = (ttmr & SPR_TTMR_M) >> 30;
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unsigned mode = (ttmr & SPR_TTMR_M) >> 30;
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/*debug (7, "ttcr = %08x\n", value);*/
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TRACE("set ttcr = %"PRIxREG"\n", value);
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ttcr = value;
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ttcr = value;
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/* Remove previous if it exists */
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/* Remove previous if it exists */
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TRACE("Removeing scheduled jobs\n");
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SCHED_FIND_REMOVE(tick_job, (void *)0);
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SCHED_FIND_REMOVE(tick_job, (void *)0);
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SCHED_FIND_REMOVE(tick_job, (void *)1);
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SCHED_FIND_REMOVE(tick_job, (void *)1);
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if (mode == 1 || mode == 2) {
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if (mode == 1 || mode == 2) {
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TRACE("Scheduleing timer job for %li\n", (ttmr & SPR_TTMR_PERIOD) - ttcr);
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SCHED_ADD(tick_job, (void *)0, (ttmr & SPR_TTMR_PERIOD) - ttcr);
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SCHED_ADD(tick_job, (void *)0, (ttmr & SPR_TTMR_PERIOD) - ttcr);
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cycles_start = runtime.sim.cycles - ttcr;
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cycles_start = runtime.sim.cycles - ttcr;
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}
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}
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}
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}
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void spr_write_ttmr (unsigned long value)
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void spr_write_ttmr (unsigned long value)
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{
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{
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/*debug (7, "ttmr = %08x\n", value);*/
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TRACE("set ttmr = %"PRIxREG"\n", value);
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ttmr = value;
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ttmr = value;
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/* Handle the modes properly. */
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/* Handle the modes properly. */
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switch((ttmr & SPR_TTMR_M) >> 30) {
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switch((ttmr & SPR_TTMR_M) >> 30) {
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case 0: /* Timer is disabled */
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case 0: /* Timer is disabled */
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TRACE("Removeing scheduled jobs\n");
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SCHED_FIND_REMOVE(tick_job, (void *)0);
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SCHED_FIND_REMOVE(tick_job, (void *)0);
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SCHED_FIND_REMOVE(tick_job, (void *)1);
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SCHED_FIND_REMOVE(tick_job, (void *)1);
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break;
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break;
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case 1: /* Timer should auto restart */
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case 1: /* Timer should auto restart */
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sprs[SPR_TTCR] = ttcr = 0;
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sprs[SPR_TTCR] = ttcr = 0;
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cycles_start = runtime.sim.cycles;
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cycles_start = runtime.sim.cycles;
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TRACE("Removeing scheduled jobs\n");
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SCHED_FIND_REMOVE(tick_job, (void *)0);
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SCHED_FIND_REMOVE(tick_job, (void *)0);
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SCHED_FIND_REMOVE(tick_job, (void *)1);
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SCHED_FIND_REMOVE(tick_job, (void *)1);
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TRACE("Scheduleing timer job for %li\n", (ttmr & SPR_TTMR_PERIOD) - ttcr);
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SCHED_ADD(tick_job, (void *)0, (ttmr & SPR_TTMR_PERIOD) - ttcr);
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SCHED_ADD(tick_job, (void *)0, (ttmr & SPR_TTMR_PERIOD) - ttcr);
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break;
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break;
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case 2: /* Stop the timer when match */
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case 2: /* Stop the timer when match */
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TRACE("Removeing scheduled jobs\n");
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SCHED_FIND_REMOVE(tick_job, (void *)0);
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SCHED_FIND_REMOVE(tick_job, (void *)0);
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SCHED_FIND_REMOVE(tick_job, (void *)1);
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SCHED_FIND_REMOVE(tick_job, (void *)1);
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break;
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break;
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case 3: /* Timer keeps running -- do nothing*/
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case 3: /* Timer keeps running -- do nothing*/
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break;
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break;
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}
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}
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}
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}
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unsigned long spr_read_ttcr ()
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unsigned long spr_read_ttcr ()
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{
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{
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/*debug (7, "ttcr ---- %08x\n", runtime.sim.cycles - cycles_start);*/
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TRACE("read ttcr %lli\n", runtime.sim.cycles - cycles_start);
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return runtime.sim.cycles - cycles_start;
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return runtime.sim.cycles - cycles_start;
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}
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}
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No newline at end of file
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