2  * QEMU model of the Xilinx timer block.
6  * DS573: https://docs.amd.com/v/u/en-US/xps_timer
7  * LogiCORE IP XPS Timer/Counter (v1.02a)
33 #include "hw/qdev-properties.h"
34 #include "hw/qdev-properties-system.h"
42 #define R_TLR      1
46 #define TCSR_MDT        (1<<0)
47 #define TCSR_UDT        (1<<1)
48 #define TCSR_GENT       (1<<2)
49 #define TCSR_CAPT       (1<<3)
50 #define TCSR_ARHT       (1<<4)
51 #define TCSR_LOAD       (1<<5)
52 #define TCSR_ENIT       (1<<6)
53 #define TCSR_ENT        (1<<7)
54 #define TCSR_TINT       (1<<8)
55 #define TCSR_PWMA       (1<<9)
56 #define TCSR_ENALL      (1<<10)
69 #define TYPE_XILINX_TIMER "xlnx.xps-timer"
87     return 2 - t->one_timer_only;  in num_timers()
102         csr = t->timers[i].regs[R_TCSR];  in timer_update_irq()
107     qemu_set_irq(t->irq, !!irq);  in timer_update_irq()
116     unsigned int timer;  in timer_read()  local
119     timer = timer_from_addr(addr);  in timer_read()
120     xt = &t->timers[timer];  in timer_read()
126                 r = ptimer_get_count(xt->ptimer);  in timer_read()
127                 if (!(xt->regs[R_TCSR] & TCSR_UDT))  in timer_read()
130                          timer, r, xt->regs[R_TCSR] & TCSR_UDT));  in timer_read()
133             if (addr < ARRAY_SIZE(xt->regs))  in timer_read()
134                 r = xt->regs[addr];  in timer_read()
138     D(fprintf(stderr, "%s timer=%d %x=%x\n", __func__, timer, addr * 4, r));  in timer_read()
147     D(fprintf(stderr, "%s timer=%d down=%d\n", __func__,  in timer_enable()
148               xt->nr, xt->regs[R_TCSR] & TCSR_UDT));  in timer_enable()
150     ptimer_stop(xt->ptimer);  in timer_enable()
152     if (xt->regs[R_TCSR] & TCSR_UDT)  in timer_enable()
153         count = xt->regs[R_TLR];  in timer_enable()
155         count = ~0 - xt->regs[R_TLR];  in timer_enable()
156     ptimer_set_limit(xt->ptimer, count, 1);  in timer_enable()
157     ptimer_run(xt->ptimer, 1);  in timer_enable()
166     unsigned int timer;  in timer_write()  local
170     timer = timer_from_addr(addr);  in timer_write()
171     xt = &t->timers[timer];  in timer_write()
172     D(fprintf(stderr, "%s addr=%x val=%x (timer=%d off=%d)\n",  in timer_write()
173              __func__, addr * 4, value, timer, addr & 3));  in timer_write()
182             xt->regs[addr] = value & 0x7ff;  in timer_write()
184                 ptimer_transaction_begin(xt->ptimer);  in timer_write()
186                 ptimer_transaction_commit(xt->ptimer);  in timer_write()
191             if (addr < ARRAY_SIZE(xt->regs))  in timer_write()
192                 xt->regs[addr] = value;  in timer_write()
199     [0 ... 1] = {
212     [1].endianness = DEVICE_BIG_ENDIAN,
218     XpsTimerState *t = xt->parent;  in timer_hit()
219     D(fprintf(stderr, "%s %d\n", __func__, xt->nr));  in timer_hit()
220     xt->regs[R_TCSR] |= TCSR_TINT;  in timer_hit()
222     if (xt->regs[R_TCSR] & TCSR_ARHT)  in timer_hit()
232     if (t->model_endianness == ENDIAN_MODE_UNSPECIFIED) {  in xilinx_timer_realize()
239     t->timers = g_malloc0(sizeof t->timers[0] * num_timers(t));  in xilinx_timer_realize()
241         struct xlx_timer *xt = &t->timers[i];  in xilinx_timer_realize()
243         xt->parent = t;  in xilinx_timer_realize()
244         xt->nr = i;  in xilinx_timer_realize()
245         xt->ptimer = ptimer_init(timer_hit, xt, PTIMER_POLICY_LEGACY);  in xilinx_timer_realize()
246         ptimer_transaction_begin(xt->ptimer);  in xilinx_timer_realize()
247         ptimer_set_freq(xt->ptimer, t->freq_hz);  in xilinx_timer_realize()
248         ptimer_transaction_commit(xt->ptimer);  in xilinx_timer_realize()
251     memory_region_init_io(&t->mmio, OBJECT(t),  in xilinx_timer_realize()
252                           &timer_ops[t->model_endianness == ENDIAN_MODE_BIG],  in xilinx_timer_realize()
253                           t, "xlnx.xps-timer", R_MAX * 4 * num_timers(t));  in xilinx_timer_realize()
254     sysbus_init_mmio(SYS_BUS_DEVICE(dev), &t->mmio);  in xilinx_timer_realize()
262     sysbus_init_irq(SYS_BUS_DEVICE(obj), &t->irq);  in xilinx_timer_init()
267     DEFINE_PROP_UINT32("clock-frequency", XpsTimerState, freq_hz, 62 * 1000000),
268     DEFINE_PROP_UINT8("one-timer-only", XpsTimerState, one_timer_only, 0),
275     dc->realize = xilinx_timer_realize;  in xilinx_timer_class_init()