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
33 * This is the auxio port, chip control and system control part of
34 * chip STP2001 (Slave I/O), also produced as NCR89C105. See
35 * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
37 * This also includes the PMC CPU idle controller.
41 #define MISC_DPRINTF(fmt, ...) \
42 do { printf("MISC: " fmt , ## __VA_ARGS__); } while (0)
44 #define MISC_DPRINTF(fmt, ...)
47 typedef struct MiscState {
59 typedef struct APCState {
65 #define SYSCTRL_SIZE 4
69 #define AUX2_PWROFF 0x01
70 #define AUX2_PWRINTCLR 0x02
71 #define AUX2_PWRFAIL 0x20
73 #define CFG_PWRINTEN 0x08
75 #define SYS_RESET 0x01
76 #define SYS_RESETSTAT 0x02
78 static void slavio_misc_update_irq(void *opaque)
80 MiscState *s = opaque;
82 if ((s->aux2 & AUX2_PWRFAIL) && (s->config & CFG_PWRINTEN)) {
83 MISC_DPRINTF("Raise IRQ\n");
84 qemu_irq_raise(s->irq);
86 MISC_DPRINTF("Lower IRQ\n");
87 qemu_irq_lower(s->irq);
91 static void slavio_misc_reset(void *opaque)
93 MiscState *s = opaque;
95 // Diagnostic and system control registers not cleared in reset
96 s->config = s->aux1 = s->aux2 = s->mctrl = 0;
99 static void slavio_set_power_fail(void *opaque, int irq, int power_failing)
101 MiscState *s = opaque;
103 MISC_DPRINTF("Power fail: %d, config: %d\n", power_failing, s->config);
104 if (power_failing && (s->config & CFG_PWRINTEN)) {
105 s->aux2 |= AUX2_PWRFAIL;
107 s->aux2 &= ~AUX2_PWRFAIL;
109 slavio_misc_update_irq(s);
112 static void slavio_cfg_mem_writeb(void *opaque, target_phys_addr_t addr,
115 MiscState *s = opaque;
117 MISC_DPRINTF("Write config %2.2x\n", val & 0xff);
118 s->config = val & 0xff;
119 slavio_misc_update_irq(s);
122 static uint32_t slavio_cfg_mem_readb(void *opaque, target_phys_addr_t addr)
124 MiscState *s = opaque;
128 MISC_DPRINTF("Read config %2.2x\n", ret);
132 static CPUReadMemoryFunc * const slavio_cfg_mem_read[3] = {
133 slavio_cfg_mem_readb,
138 static CPUWriteMemoryFunc * const slavio_cfg_mem_write[3] = {
139 slavio_cfg_mem_writeb,
144 static void slavio_diag_mem_writeb(void *opaque, target_phys_addr_t addr,
147 MiscState *s = opaque;
149 MISC_DPRINTF("Write diag %2.2x\n", val & 0xff);
150 s->diag = val & 0xff;
153 static uint32_t slavio_diag_mem_readb(void *opaque, target_phys_addr_t addr)
155 MiscState *s = opaque;
159 MISC_DPRINTF("Read diag %2.2x\n", ret);
163 static CPUReadMemoryFunc * const slavio_diag_mem_read[3] = {
164 slavio_diag_mem_readb,
169 static CPUWriteMemoryFunc * const slavio_diag_mem_write[3] = {
170 slavio_diag_mem_writeb,
175 static void slavio_mdm_mem_writeb(void *opaque, target_phys_addr_t addr,
178 MiscState *s = opaque;
180 MISC_DPRINTF("Write modem control %2.2x\n", val & 0xff);
181 s->mctrl = val & 0xff;
184 static uint32_t slavio_mdm_mem_readb(void *opaque, target_phys_addr_t addr)
186 MiscState *s = opaque;
190 MISC_DPRINTF("Read modem control %2.2x\n", ret);
194 static CPUReadMemoryFunc * const slavio_mdm_mem_read[3] = {
195 slavio_mdm_mem_readb,
200 static CPUWriteMemoryFunc * const slavio_mdm_mem_write[3] = {
201 slavio_mdm_mem_writeb,
206 static void slavio_aux1_mem_writeb(void *opaque, target_phys_addr_t addr,
209 MiscState *s = opaque;
211 MISC_DPRINTF("Write aux1 %2.2x\n", val & 0xff);
213 // Send a pulse to floppy terminal count line
215 qemu_irq_raise(s->fdc_tc);
216 qemu_irq_lower(s->fdc_tc);
220 s->aux1 = val & 0xff;
223 static uint32_t slavio_aux1_mem_readb(void *opaque, target_phys_addr_t addr)
225 MiscState *s = opaque;
229 MISC_DPRINTF("Read aux1 %2.2x\n", ret);
234 static CPUReadMemoryFunc * const slavio_aux1_mem_read[3] = {
235 slavio_aux1_mem_readb,
240 static CPUWriteMemoryFunc * const slavio_aux1_mem_write[3] = {
241 slavio_aux1_mem_writeb,
246 static void slavio_aux2_mem_writeb(void *opaque, target_phys_addr_t addr,
249 MiscState *s = opaque;
251 val &= AUX2_PWRINTCLR | AUX2_PWROFF;
252 MISC_DPRINTF("Write aux2 %2.2x\n", val);
253 val |= s->aux2 & AUX2_PWRFAIL;
254 if (val & AUX2_PWRINTCLR) // Clear Power Fail int
257 if (val & AUX2_PWROFF)
258 qemu_system_shutdown_request();
259 slavio_misc_update_irq(s);
262 static uint32_t slavio_aux2_mem_readb(void *opaque, target_phys_addr_t addr)
264 MiscState *s = opaque;
268 MISC_DPRINTF("Read aux2 %2.2x\n", ret);
273 static CPUReadMemoryFunc * const slavio_aux2_mem_read[3] = {
274 slavio_aux2_mem_readb,
279 static CPUWriteMemoryFunc * const slavio_aux2_mem_write[3] = {
280 slavio_aux2_mem_writeb,
285 static void apc_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
287 APCState *s = opaque;
289 MISC_DPRINTF("Write power management %2.2x\n", val & 0xff);
290 qemu_irq_raise(s->cpu_halt);
293 static uint32_t apc_mem_readb(void *opaque, target_phys_addr_t addr)
297 MISC_DPRINTF("Read power management %2.2x\n", ret);
301 static CPUReadMemoryFunc * const apc_mem_read[3] = {
307 static CPUWriteMemoryFunc * const apc_mem_write[3] = {
313 static uint32_t slavio_sysctrl_mem_readl(void *opaque, target_phys_addr_t addr)
315 MiscState *s = opaque;
325 MISC_DPRINTF("Read system control %08x\n", ret);
329 static void slavio_sysctrl_mem_writel(void *opaque, target_phys_addr_t addr,
332 MiscState *s = opaque;
334 MISC_DPRINTF("Write system control %08x\n", val);
337 if (val & SYS_RESET) {
338 s->sysctrl = SYS_RESETSTAT;
339 qemu_system_reset_request();
347 static CPUReadMemoryFunc * const slavio_sysctrl_mem_read[3] = {
350 slavio_sysctrl_mem_readl,
353 static CPUWriteMemoryFunc * const slavio_sysctrl_mem_write[3] = {
356 slavio_sysctrl_mem_writel,
359 static uint32_t slavio_led_mem_readw(void *opaque, target_phys_addr_t addr)
361 MiscState *s = opaque;
371 MISC_DPRINTF("Read diagnostic LED %04x\n", ret);
375 static void slavio_led_mem_writew(void *opaque, target_phys_addr_t addr,
378 MiscState *s = opaque;
380 MISC_DPRINTF("Write diagnostic LED %04x\n", val & 0xffff);
390 static CPUReadMemoryFunc * const slavio_led_mem_read[3] = {
392 slavio_led_mem_readw,
396 static CPUWriteMemoryFunc * const slavio_led_mem_write[3] = {
398 slavio_led_mem_writew,
402 static const VMStateDescription vmstate_misc = {
403 .name ="slavio_misc",
405 .minimum_version_id = 1,
406 .minimum_version_id_old = 1,
407 .fields = (VMStateField []) {
408 VMSTATE_UINT32(dummy, MiscState),
409 VMSTATE_UINT8(config, MiscState),
410 VMSTATE_UINT8(aux1, MiscState),
411 VMSTATE_UINT8(aux2, MiscState),
412 VMSTATE_UINT8(diag, MiscState),
413 VMSTATE_UINT8(mctrl, MiscState),
414 VMSTATE_UINT8(sysctrl, MiscState),
415 VMSTATE_END_OF_LIST()
419 static int apc_init1(SysBusDevice *dev)
421 APCState *s = FROM_SYSBUS(APCState, dev);
424 sysbus_init_irq(dev, &s->cpu_halt);
426 /* Power management (APC) XXX: not a Slavio device */
427 io = cpu_register_io_memory(apc_mem_read, apc_mem_write, s);
428 sysbus_init_mmio(dev, MISC_SIZE, io);
432 static int slavio_misc_init1(SysBusDevice *dev)
434 MiscState *s = FROM_SYSBUS(MiscState, dev);
437 sysbus_init_irq(dev, &s->irq);
438 sysbus_init_irq(dev, &s->fdc_tc);
440 /* 8 bit registers */
442 io = cpu_register_io_memory(slavio_cfg_mem_read,
443 slavio_cfg_mem_write, s);
444 sysbus_init_mmio(dev, MISC_SIZE, io);
447 io = cpu_register_io_memory(slavio_diag_mem_read,
448 slavio_diag_mem_write, s);
449 sysbus_init_mmio(dev, MISC_SIZE, io);
452 io = cpu_register_io_memory(slavio_mdm_mem_read,
453 slavio_mdm_mem_write, s);
454 sysbus_init_mmio(dev, MISC_SIZE, io);
456 /* 16 bit registers */
457 /* ss600mp diag LEDs */
458 io = cpu_register_io_memory(slavio_led_mem_read,
459 slavio_led_mem_write, s);
460 sysbus_init_mmio(dev, MISC_SIZE, io);
462 /* 32 bit registers */
464 io = cpu_register_io_memory(slavio_sysctrl_mem_read,
465 slavio_sysctrl_mem_write, s);
466 sysbus_init_mmio(dev, SYSCTRL_SIZE, io);
468 /* AUX 1 (Misc System Functions) */
469 io = cpu_register_io_memory(slavio_aux1_mem_read,
470 slavio_aux1_mem_write, s);
471 sysbus_init_mmio(dev, MISC_SIZE, io);
473 /* AUX 2 (Software Powerdown Control) */
474 io = cpu_register_io_memory(slavio_aux2_mem_read,
475 slavio_aux2_mem_write, s);
476 sysbus_init_mmio(dev, MISC_SIZE, io);
478 qdev_init_gpio_in(&dev->qdev, slavio_set_power_fail, 1);
480 vmstate_register(-1, &vmstate_misc, s);
481 qemu_register_reset(slavio_misc_reset, s);
482 slavio_misc_reset(s);
486 static SysBusDeviceInfo slavio_misc_info = {
487 .init = slavio_misc_init1,
488 .qdev.name = "slavio_misc",
489 .qdev.size = sizeof(MiscState),
492 static SysBusDeviceInfo apc_info = {
495 .qdev.size = sizeof(MiscState),
498 static void slavio_misc_register_devices(void)
500 sysbus_register_withprop(&slavio_misc_info);
501 sysbus_register_withprop(&apc_info);
504 device_init(slavio_misc_register_devices)