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authorPeter Maydell <peter.maydell@linaro.org>2021-01-11 14:26:47 +0000
committerPeter Maydell <peter.maydell@linaro.org>2021-02-15 14:10:06 +0000
commit397cb31b50e429f22de526c527234ff9d34cc6c8 (patch)
tree08eb1813170aba00fc7de32fd1b44af43b5d8979
parent6d243cfe255e0af73b329cea0ccd1e08862b4ede (diff)
downloadqemu-arm-397cb31b50e429f22de526c527234ff9d34cc6c8.tar.gz
hw/misc/iotkit-sysctl: Handle SSE-300 changes to PDCM_PD_*_SENSE registers
The sysctl PDCM_PD_*_SENSE registers control various power domains in the system and allow the guest to configure which conditions keep a power domain awake and what power state to use when the domain is in a low power state. QEMU doesn't model power domains, so for us these registers are dummy reads-as-written implementations. The SSE-300 has a different power domain setup, so the set of registers is slightly different: Offset SSE-200 SSE-300 --------------------------------------------------- 0x200 PDCM_PD_SYS_SENSE PDCM_PD_SYS_SENSE 0x204 reserved PDCM_PD_CPU0_SENSE 0x208 reserved reserved 0x20c PDCM_PD_SRAM0_SENSE reserved 0x210 PDCM_PD_SRAM1_SENSE reserved 0x214 PDCM_PD_SRAM2_SENSE PDCM_PD_VMR0_SENSE 0x218 PDCM_PD_SRAM3_SENSE PDCM_PD_VMR1_SENSE Offsets 0x200 and 0x208 are the same for both, so handled in a previous commit; here we deal with 0x204, 0x20c, 0x210, 0x214, 0x218. (We can safely add new lines to the SSE300 vmstate because no board uses this device in an SSE300 yet.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--hw/misc/iotkit-sysctl.c61
-rw-r--r--include/hw/misc/iotkit-sysctl.h3
2 files changed, 62 insertions, 2 deletions
diff --git a/hw/misc/iotkit-sysctl.c b/hw/misc/iotkit-sysctl.c
index e8255d26b5..a80f68b799 100644
--- a/hw/misc/iotkit-sysctl.c
+++ b/hw/misc/iotkit-sysctl.c
@@ -55,10 +55,11 @@ REG32(PWRCTRL, 0x1fc)
FIELD(PWRCTRL, PPU_ACCESS_UNLOCK, 0, 1)
FIELD(PWRCTRL, PPU_ACCESS_FILTER, 1, 1)
REG32(PDCM_PD_SYS_SENSE, 0x200)
+REG32(PDCM_PD_CPU0_SENSE, 0x204)
REG32(PDCM_PD_SRAM0_SENSE, 0x20c)
REG32(PDCM_PD_SRAM1_SENSE, 0x210)
-REG32(PDCM_PD_SRAM2_SENSE, 0x214)
-REG32(PDCM_PD_SRAM3_SENSE, 0x218)
+REG32(PDCM_PD_SRAM2_SENSE, 0x214) /* PDCM_PD_VMR0_SENSE on SSE300 */
+REG32(PDCM_PD_SRAM3_SENSE, 0x218) /* PDCM_PD_VMR1_SENSE on SSE300 */
REG32(PID4, 0xfd0)
REG32(PID5, 0xfd4)
REG32(PID6, 0xfd8)
@@ -259,6 +260,18 @@ static uint64_t iotkit_sysctl_read(void *opaque, hwaddr offset,
g_assert_not_reached();
}
break;
+ case A_PDCM_PD_CPU0_SENSE:
+ switch (s->sse_version) {
+ case ARMSSE_IOTKIT:
+ case ARMSSE_SSE200:
+ goto bad_offset;
+ case ARMSSE_SSE300:
+ r = s->pdcm_pd_cpu0_sense;
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ break;
case A_PDCM_PD_SRAM0_SENSE:
switch (s->sse_version) {
case ARMSSE_IOTKIT:
@@ -266,6 +279,8 @@ static uint64_t iotkit_sysctl_read(void *opaque, hwaddr offset,
case ARMSSE_SSE200:
r = s->pdcm_pd_sram0_sense;
break;
+ case ARMSSE_SSE300:
+ goto bad_offset;
default:
g_assert_not_reached();
}
@@ -277,6 +292,8 @@ static uint64_t iotkit_sysctl_read(void *opaque, hwaddr offset,
case ARMSSE_SSE200:
r = s->pdcm_pd_sram1_sense;
break;
+ case ARMSSE_SSE300:
+ goto bad_offset;
default:
g_assert_not_reached();
}
@@ -288,6 +305,9 @@ static uint64_t iotkit_sysctl_read(void *opaque, hwaddr offset,
case ARMSSE_SSE200:
r = s->pdcm_pd_sram2_sense;
break;
+ case ARMSSE_SSE300:
+ r = s->pdcm_pd_vmr0_sense;
+ break;
default:
g_assert_not_reached();
}
@@ -299,6 +319,9 @@ static uint64_t iotkit_sysctl_read(void *opaque, hwaddr offset,
case ARMSSE_SSE200:
r = s->pdcm_pd_sram3_sense;
break;
+ case ARMSSE_SSE300:
+ r = s->pdcm_pd_vmr1_sense;
+ break;
default:
g_assert_not_reached();
}
@@ -553,6 +576,20 @@ static void iotkit_sysctl_write(void *opaque, hwaddr offset,
g_assert_not_reached();
}
break;
+ case A_PDCM_PD_CPU0_SENSE:
+ switch (s->sse_version) {
+ case ARMSSE_IOTKIT:
+ case ARMSSE_SSE200:
+ goto bad_offset;
+ case ARMSSE_SSE300:
+ qemu_log_mask(LOG_UNIMP,
+ "IoTKit SysCtl PDCM_PD_CPU0_SENSE unimplemented\n");
+ s->pdcm_pd_cpu0_sense = value;
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ break;
case A_PDCM_PD_SRAM0_SENSE:
switch (s->sse_version) {
case ARMSSE_IOTKIT:
@@ -562,6 +599,8 @@ static void iotkit_sysctl_write(void *opaque, hwaddr offset,
"IoTKit SysCtl PDCM_PD_SRAM0_SENSE unimplemented\n");
s->pdcm_pd_sram0_sense = value;
break;
+ case ARMSSE_SSE300:
+ goto bad_offset;
default:
g_assert_not_reached();
}
@@ -575,6 +614,8 @@ static void iotkit_sysctl_write(void *opaque, hwaddr offset,
"IoTKit SysCtl PDCM_PD_SRAM1_SENSE unimplemented\n");
s->pdcm_pd_sram1_sense = value;
break;
+ case ARMSSE_SSE300:
+ goto bad_offset;
default:
g_assert_not_reached();
}
@@ -588,6 +629,11 @@ static void iotkit_sysctl_write(void *opaque, hwaddr offset,
"IoTKit SysCtl PDCM_PD_SRAM2_SENSE unimplemented\n");
s->pdcm_pd_sram2_sense = value;
break;
+ case ARMSSE_SSE300:
+ qemu_log_mask(LOG_UNIMP,
+ "IoTKit SysCtl PDCM_PD_VMR0_SENSE unimplemented\n");
+ s->pdcm_pd_vmr0_sense = value;
+ break;
default:
g_assert_not_reached();
}
@@ -601,6 +647,11 @@ static void iotkit_sysctl_write(void *opaque, hwaddr offset,
"IoTKit SysCtl PDCM_PD_SRAM3_SENSE unimplemented\n");
s->pdcm_pd_sram3_sense = value;
break;
+ case ARMSSE_SSE300:
+ qemu_log_mask(LOG_UNIMP,
+ "IoTKit SysCtl PDCM_PD_VMR1_SENSE unimplemented\n");
+ s->pdcm_pd_vmr1_sense = value;
+ break;
default:
g_assert_not_reached();
}
@@ -672,6 +723,9 @@ static void iotkit_sysctl_reset(DeviceState *dev)
s->pdcm_pd_sram1_sense = 0;
s->pdcm_pd_sram2_sense = 0;
s->pdcm_pd_sram3_sense = 0;
+ s->pdcm_pd_cpu0_sense = 0;
+ s->pdcm_pd_vmr0_sense = 0;
+ s->pdcm_pd_vmr1_sense = 0;
}
static void iotkit_sysctl_init(Object *obj)
@@ -708,6 +762,9 @@ static const VMStateDescription iotkit_sysctl_sse300_vmstate = {
.needed = sse300_needed,
.fields = (VMStateField[]) {
VMSTATE_UINT32(pwrctrl, IoTKitSysCtl),
+ VMSTATE_UINT32(pdcm_pd_cpu0_sense, IoTKitSysCtl),
+ VMSTATE_UINT32(pdcm_pd_vmr0_sense, IoTKitSysCtl),
+ VMSTATE_UINT32(pdcm_pd_vmr1_sense, IoTKitSysCtl),
VMSTATE_END_OF_LIST()
}
};
diff --git a/include/hw/misc/iotkit-sysctl.h b/include/hw/misc/iotkit-sysctl.h
index 8859b15d73..481e27f4db 100644
--- a/include/hw/misc/iotkit-sysctl.h
+++ b/include/hw/misc/iotkit-sysctl.h
@@ -59,6 +59,9 @@ struct IoTKitSysCtl {
uint32_t pdcm_pd_sram1_sense;
uint32_t pdcm_pd_sram2_sense;
uint32_t pdcm_pd_sram3_sense;
+ uint32_t pdcm_pd_cpu0_sense;
+ uint32_t pdcm_pd_vmr0_sense;
+ uint32_t pdcm_pd_vmr1_sense;
/* Properties */
uint32_t sse_version;