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
29 * This is the auxio port, chip control and system control part of
30 * chip STP2001 (Slave I/O), also produced as NCR89C105. See
31 * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
33 * This also includes the PMC CPU idle controller.
37 #define MISC_DPRINTF(fmt, args...) \
38 do { printf("MISC: " fmt , ##args); } while (0)
40 #define MISC_DPRINTF(fmt, args...)
43 typedef struct MiscState {
52 #define SYSCTRL_MAXADDR 3
53 #define SYSCTRL_SIZE (SYSCTRL_MAXADDR + 1)
55 static void slavio_misc_update_irq(void *opaque)
57 MiscState *s = opaque;
59 if ((s->aux2 & 0x4) && (s->config & 0x8)) {
60 MISC_DPRINTF("Raise IRQ\n");
61 qemu_irq_raise(s->irq);
63 MISC_DPRINTF("Lower IRQ\n");
64 qemu_irq_lower(s->irq);
68 static void slavio_misc_reset(void *opaque)
70 MiscState *s = opaque;
72 // Diagnostic and system control registers not cleared in reset
73 s->config = s->aux1 = s->aux2 = s->mctrl = 0;
76 void slavio_set_power_fail(void *opaque, int power_failing)
78 MiscState *s = opaque;
80 MISC_DPRINTF("Power fail: %d, config: %d\n", power_failing, s->config);
81 if (power_failing && (s->config & 0x8)) {
86 slavio_misc_update_irq(s);
89 static void slavio_misc_mem_writeb(void *opaque, target_phys_addr_t addr,
92 MiscState *s = opaque;
94 switch (addr & 0xfff0000) {
96 MISC_DPRINTF("Write config %2.2x\n", val & 0xff);
97 s->config = val & 0xff;
98 slavio_misc_update_irq(s);
101 MISC_DPRINTF("Write aux1 %2.2x\n", val & 0xff);
102 s->aux1 = val & 0xff;
106 MISC_DPRINTF("Write aux2 %2.2x\n", val);
107 val |= s->aux2 & 0x4;
108 if (val & 0x2) // Clear Power Fail int
112 qemu_system_shutdown_request();
113 slavio_misc_update_irq(s);
116 MISC_DPRINTF("Write diag %2.2x\n", val & 0xff);
117 s->diag = val & 0xff;
120 MISC_DPRINTF("Write modem control %2.2x\n", val & 0xff);
121 s->mctrl = val & 0xff;
124 MISC_DPRINTF("Write power management %2.2x\n", val & 0xff);
125 cpu_interrupt(cpu_single_env, CPU_INTERRUPT_HALT);
130 static uint32_t slavio_misc_mem_readb(void *opaque, target_phys_addr_t addr)
132 MiscState *s = opaque;
135 switch (addr & 0xfff0000) {
138 MISC_DPRINTF("Read config %2.2x\n", ret);
142 MISC_DPRINTF("Read aux1 %2.2x\n", ret);
146 MISC_DPRINTF("Read aux2 %2.2x\n", ret);
150 MISC_DPRINTF("Read diag %2.2x\n", ret);
154 MISC_DPRINTF("Read modem control %2.2x\n", ret);
157 MISC_DPRINTF("Read power management %2.2x\n", ret);
163 static CPUReadMemoryFunc *slavio_misc_mem_read[3] = {
164 slavio_misc_mem_readb,
165 slavio_misc_mem_readb,
166 slavio_misc_mem_readb,
169 static CPUWriteMemoryFunc *slavio_misc_mem_write[3] = {
170 slavio_misc_mem_writeb,
171 slavio_misc_mem_writeb,
172 slavio_misc_mem_writeb,
175 static uint32_t slavio_sysctrl_mem_readl(void *opaque, target_phys_addr_t addr)
177 MiscState *s = opaque;
178 uint32_t ret = 0, saddr;
180 saddr = addr & SYSCTRL_MAXADDR;
188 MISC_DPRINTF("Read system control reg 0x" TARGET_FMT_plx " = %x\n", addr,
193 static void slavio_sysctrl_mem_writel(void *opaque, target_phys_addr_t addr,
196 MiscState *s = opaque;
199 saddr = addr & SYSCTRL_MAXADDR;
200 MISC_DPRINTF("Write system control reg 0x" TARGET_FMT_plx " = %x\n", addr,
206 qemu_system_reset_request();
214 static CPUReadMemoryFunc *slavio_sysctrl_mem_read[3] = {
215 slavio_sysctrl_mem_readl,
216 slavio_sysctrl_mem_readl,
217 slavio_sysctrl_mem_readl,
220 static CPUWriteMemoryFunc *slavio_sysctrl_mem_write[3] = {
221 slavio_sysctrl_mem_writel,
222 slavio_sysctrl_mem_writel,
223 slavio_sysctrl_mem_writel,
226 static void slavio_misc_save(QEMUFile *f, void *opaque)
228 MiscState *s = opaque;
233 qemu_put_be32s(f, &tmp); /* ignored, was IRQ. */
234 qemu_put_8s(f, &s->config);
235 qemu_put_8s(f, &s->aux1);
236 qemu_put_8s(f, &s->aux2);
237 qemu_put_8s(f, &s->diag);
238 qemu_put_8s(f, &s->mctrl);
239 tmp8 = s->sysctrl & 0xff;
240 qemu_put_8s(f, &tmp8);
243 static int slavio_misc_load(QEMUFile *f, void *opaque, int version_id)
245 MiscState *s = opaque;
252 qemu_get_be32s(f, &tmp);
253 qemu_get_8s(f, &s->config);
254 qemu_get_8s(f, &s->aux1);
255 qemu_get_8s(f, &s->aux2);
256 qemu_get_8s(f, &s->diag);
257 qemu_get_8s(f, &s->mctrl);
258 qemu_get_8s(f, &tmp8);
259 s->sysctrl = (uint32_t)tmp8;
263 void *slavio_misc_init(target_phys_addr_t base, target_phys_addr_t power_base,
266 int slavio_misc_io_memory;
269 s = qemu_mallocz(sizeof(MiscState));
273 /* 8 bit registers */
274 slavio_misc_io_memory = cpu_register_io_memory(0, slavio_misc_mem_read,
275 slavio_misc_mem_write, s);
277 cpu_register_physical_memory(base + 0x1800000, MISC_SIZE,
278 slavio_misc_io_memory);
280 cpu_register_physical_memory(base + 0x1900000, MISC_SIZE,
281 slavio_misc_io_memory);
283 cpu_register_physical_memory(base + 0x1910000, MISC_SIZE,
284 slavio_misc_io_memory);
286 cpu_register_physical_memory(base + 0x1a00000, MISC_SIZE,
287 slavio_misc_io_memory);
289 cpu_register_physical_memory(base + 0x1b00000, MISC_SIZE,
290 slavio_misc_io_memory);
292 cpu_register_physical_memory(power_base, MISC_SIZE, slavio_misc_io_memory);
294 /* 32 bit registers */
295 slavio_misc_io_memory = cpu_register_io_memory(0, slavio_sysctrl_mem_read,
296 slavio_sysctrl_mem_write,
299 cpu_register_physical_memory(base + 0x1f00000, SYSCTRL_SIZE,
300 slavio_misc_io_memory);
304 register_savevm("slavio_misc", base, 1, slavio_misc_save, slavio_misc_load,
306 qemu_register_reset(slavio_misc_reset, s);
307 slavio_misc_reset(s);