2 * QEMU Sparc SLAVIO aux io port emulation
4 * Copyright (c) 2005 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
30 * This is the auxio port, chip control and system control part of
31 * chip STP2001 (Slave I/O), also produced as NCR89C105. See
32 * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
34 * This also includes the PMC CPU idle controller.
37 typedef struct MiscState {
49 typedef struct APCState {
55 #define SYSCTRL_SIZE 4
59 #define AUX2_PWROFF 0x01
60 #define AUX2_PWRINTCLR 0x02
61 #define AUX2_PWRFAIL 0x20
63 #define CFG_PWRINTEN 0x08
65 #define SYS_RESET 0x01
66 #define SYS_RESETSTAT 0x02
68 static void slavio_misc_update_irq(void *opaque)
70 MiscState *s = opaque;
72 if ((s->aux2 & AUX2_PWRFAIL) && (s->config & CFG_PWRINTEN)) {
73 trace_slavio_misc_update_irq_raise();
74 qemu_irq_raise(s->irq);
76 trace_slavio_misc_update_irq_lower();
77 qemu_irq_lower(s->irq);
81 static void slavio_misc_reset(DeviceState *d)
83 MiscState *s = container_of(d, MiscState, busdev.qdev);
85 // Diagnostic and system control registers not cleared in reset
86 s->config = s->aux1 = s->aux2 = s->mctrl = 0;
89 static void slavio_set_power_fail(void *opaque, int irq, int power_failing)
91 MiscState *s = opaque;
93 trace_slavio_set_power_fail(power_failing, s->config);
94 if (power_failing && (s->config & CFG_PWRINTEN)) {
95 s->aux2 |= AUX2_PWRFAIL;
97 s->aux2 &= ~AUX2_PWRFAIL;
99 slavio_misc_update_irq(s);
102 static void slavio_cfg_mem_writeb(void *opaque, target_phys_addr_t addr,
105 MiscState *s = opaque;
107 trace_slavio_cfg_mem_writeb(val & 0xff);
108 s->config = val & 0xff;
109 slavio_misc_update_irq(s);
112 static uint32_t slavio_cfg_mem_readb(void *opaque, target_phys_addr_t addr)
114 MiscState *s = opaque;
118 trace_slavio_cfg_mem_readb(ret);
122 static CPUReadMemoryFunc * const slavio_cfg_mem_read[3] = {
123 slavio_cfg_mem_readb,
128 static CPUWriteMemoryFunc * const slavio_cfg_mem_write[3] = {
129 slavio_cfg_mem_writeb,
134 static void slavio_diag_mem_writeb(void *opaque, target_phys_addr_t addr,
137 MiscState *s = opaque;
139 trace_slavio_diag_mem_writeb(val & 0xff);
140 s->diag = val & 0xff;
143 static uint32_t slavio_diag_mem_readb(void *opaque, target_phys_addr_t addr)
145 MiscState *s = opaque;
149 trace_slavio_diag_mem_readb(ret);
153 static CPUReadMemoryFunc * const slavio_diag_mem_read[3] = {
154 slavio_diag_mem_readb,
159 static CPUWriteMemoryFunc * const slavio_diag_mem_write[3] = {
160 slavio_diag_mem_writeb,
165 static void slavio_mdm_mem_writeb(void *opaque, target_phys_addr_t addr,
168 MiscState *s = opaque;
170 trace_slavio_mdm_mem_writeb(val & 0xff);
171 s->mctrl = val & 0xff;
174 static uint32_t slavio_mdm_mem_readb(void *opaque, target_phys_addr_t addr)
176 MiscState *s = opaque;
180 trace_slavio_mdm_mem_readb(ret);
184 static CPUReadMemoryFunc * const slavio_mdm_mem_read[3] = {
185 slavio_mdm_mem_readb,
190 static CPUWriteMemoryFunc * const slavio_mdm_mem_write[3] = {
191 slavio_mdm_mem_writeb,
196 static void slavio_aux1_mem_writeb(void *opaque, target_phys_addr_t addr,
199 MiscState *s = opaque;
201 trace_slavio_aux1_mem_writeb(val & 0xff);
203 // Send a pulse to floppy terminal count line
205 qemu_irq_raise(s->fdc_tc);
206 qemu_irq_lower(s->fdc_tc);
210 s->aux1 = val & 0xff;
213 static uint32_t slavio_aux1_mem_readb(void *opaque, target_phys_addr_t addr)
215 MiscState *s = opaque;
219 trace_slavio_aux1_mem_readb(ret);
223 static CPUReadMemoryFunc * const slavio_aux1_mem_read[3] = {
224 slavio_aux1_mem_readb,
229 static CPUWriteMemoryFunc * const slavio_aux1_mem_write[3] = {
230 slavio_aux1_mem_writeb,
235 static void slavio_aux2_mem_writeb(void *opaque, target_phys_addr_t addr,
238 MiscState *s = opaque;
240 val &= AUX2_PWRINTCLR | AUX2_PWROFF;
241 trace_slavio_aux2_mem_writeb(val & 0xff);
242 val |= s->aux2 & AUX2_PWRFAIL;
243 if (val & AUX2_PWRINTCLR) // Clear Power Fail int
246 if (val & AUX2_PWROFF)
247 qemu_system_shutdown_request();
248 slavio_misc_update_irq(s);
251 static uint32_t slavio_aux2_mem_readb(void *opaque, target_phys_addr_t addr)
253 MiscState *s = opaque;
257 trace_slavio_aux2_mem_readb(ret);
261 static CPUReadMemoryFunc * const slavio_aux2_mem_read[3] = {
262 slavio_aux2_mem_readb,
267 static CPUWriteMemoryFunc * const slavio_aux2_mem_write[3] = {
268 slavio_aux2_mem_writeb,
273 static void apc_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
275 APCState *s = opaque;
277 trace_apc_mem_writeb(val & 0xff);
278 qemu_irq_raise(s->cpu_halt);
281 static uint32_t apc_mem_readb(void *opaque, target_phys_addr_t addr)
285 trace_apc_mem_readb(ret);
289 static CPUReadMemoryFunc * const apc_mem_read[3] = {
295 static CPUWriteMemoryFunc * const apc_mem_write[3] = {
301 static uint32_t slavio_sysctrl_mem_readl(void *opaque, target_phys_addr_t addr)
303 MiscState *s = opaque;
313 trace_slavio_sysctrl_mem_readl(ret);
317 static void slavio_sysctrl_mem_writel(void *opaque, target_phys_addr_t addr,
320 MiscState *s = opaque;
322 trace_slavio_sysctrl_mem_writel(val);
325 if (val & SYS_RESET) {
326 s->sysctrl = SYS_RESETSTAT;
327 qemu_system_reset_request();
335 static CPUReadMemoryFunc * const slavio_sysctrl_mem_read[3] = {
338 slavio_sysctrl_mem_readl,
341 static CPUWriteMemoryFunc * const slavio_sysctrl_mem_write[3] = {
344 slavio_sysctrl_mem_writel,
347 static uint32_t slavio_led_mem_readw(void *opaque, target_phys_addr_t addr)
349 MiscState *s = opaque;
359 trace_slavio_led_mem_readw(ret);
363 static void slavio_led_mem_writew(void *opaque, target_phys_addr_t addr,
366 MiscState *s = opaque;
368 trace_slavio_led_mem_readw(val & 0xffff);
378 static CPUReadMemoryFunc * const slavio_led_mem_read[3] = {
380 slavio_led_mem_readw,
384 static CPUWriteMemoryFunc * const slavio_led_mem_write[3] = {
386 slavio_led_mem_writew,
390 static const VMStateDescription vmstate_misc = {
391 .name ="slavio_misc",
393 .minimum_version_id = 1,
394 .minimum_version_id_old = 1,
395 .fields = (VMStateField []) {
396 VMSTATE_UINT32(dummy, MiscState),
397 VMSTATE_UINT8(config, MiscState),
398 VMSTATE_UINT8(aux1, MiscState),
399 VMSTATE_UINT8(aux2, MiscState),
400 VMSTATE_UINT8(diag, MiscState),
401 VMSTATE_UINT8(mctrl, MiscState),
402 VMSTATE_UINT8(sysctrl, MiscState),
403 VMSTATE_END_OF_LIST()
407 static int apc_init1(SysBusDevice *dev)
409 APCState *s = FROM_SYSBUS(APCState, dev);
412 sysbus_init_irq(dev, &s->cpu_halt);
414 /* Power management (APC) XXX: not a Slavio device */
415 io = cpu_register_io_memory(apc_mem_read, apc_mem_write, s,
416 DEVICE_NATIVE_ENDIAN);
417 sysbus_init_mmio(dev, MISC_SIZE, io);
421 static int slavio_misc_init1(SysBusDevice *dev)
423 MiscState *s = FROM_SYSBUS(MiscState, dev);
426 sysbus_init_irq(dev, &s->irq);
427 sysbus_init_irq(dev, &s->fdc_tc);
429 /* 8 bit registers */
431 io = cpu_register_io_memory(slavio_cfg_mem_read,
432 slavio_cfg_mem_write, s,
433 DEVICE_NATIVE_ENDIAN);
434 sysbus_init_mmio(dev, MISC_SIZE, io);
437 io = cpu_register_io_memory(slavio_diag_mem_read,
438 slavio_diag_mem_write, s,
439 DEVICE_NATIVE_ENDIAN);
440 sysbus_init_mmio(dev, MISC_SIZE, io);
443 io = cpu_register_io_memory(slavio_mdm_mem_read,
444 slavio_mdm_mem_write, s,
445 DEVICE_NATIVE_ENDIAN);
446 sysbus_init_mmio(dev, MISC_SIZE, io);
448 /* 16 bit registers */
449 /* ss600mp diag LEDs */
450 io = cpu_register_io_memory(slavio_led_mem_read,
451 slavio_led_mem_write, s,
452 DEVICE_NATIVE_ENDIAN);
453 sysbus_init_mmio(dev, MISC_SIZE, io);
455 /* 32 bit registers */
457 io = cpu_register_io_memory(slavio_sysctrl_mem_read,
458 slavio_sysctrl_mem_write, s,
459 DEVICE_NATIVE_ENDIAN);
460 sysbus_init_mmio(dev, SYSCTRL_SIZE, io);
462 /* AUX 1 (Misc System Functions) */
463 io = cpu_register_io_memory(slavio_aux1_mem_read,
464 slavio_aux1_mem_write, s,
465 DEVICE_NATIVE_ENDIAN);
466 sysbus_init_mmio(dev, MISC_SIZE, io);
468 /* AUX 2 (Software Powerdown Control) */
469 io = cpu_register_io_memory(slavio_aux2_mem_read,
470 slavio_aux2_mem_write, s,
471 DEVICE_NATIVE_ENDIAN);
472 sysbus_init_mmio(dev, MISC_SIZE, io);
474 qdev_init_gpio_in(&dev->qdev, slavio_set_power_fail, 1);
479 static SysBusDeviceInfo slavio_misc_info = {
480 .init = slavio_misc_init1,
481 .qdev.name = "slavio_misc",
482 .qdev.size = sizeof(MiscState),
483 .qdev.vmsd = &vmstate_misc,
484 .qdev.reset = slavio_misc_reset,
487 static SysBusDeviceInfo apc_info = {
490 .qdev.size = sizeof(MiscState),
493 static void slavio_misc_register_devices(void)
495 sysbus_register_withprop(&slavio_misc_info);
496 sysbus_register_withprop(&apc_info);
499 device_init(slavio_misc_register_devices)