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MIPS patches 2016-07-12 

Changes:
 * support 10-bit ASIDs
 * MIPS64R6-generic renamed to I6400
 * initial GIC support
 * implement RESET_BASE register in CM GCR
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Merge remote-tracking branch 'remotes/lalrae/tags/mips-20160712' into staging

MIPS patches 2016-07-12

Changes:
* support 10-bit ASIDs
* MIPS64R6-generic renamed to I6400
* initial GIC support
* implement RESET_BASE register in CM GCR

# gpg: Signature made Tue 12 Jul 2016 11:49:50 BST
# gpg:                using RSA key 0x52118E3C0B29DA6B
# gpg: Good signature from "Leon Alrae <leon.alrae@imgtec.com>"
# Primary key fingerprint: 8DD3 2F98 5495 9D66 35D4  4FC0 5211 8E3C 0B29 DA6B

* remotes/lalrae/tags/mips-20160712:
  target-mips: enable 10-bit ASIDs in I6400 CPU
  target-mips: support CP0.Config4.AE bit
  target-mips: change ASID type to hold more than 8 bits
  target-mips: add ASID mask field and replace magic values
  target-mips: replace MIPS64R6-generic with the real I6400 CPU model
  hw/mips_cmgcr: implement RESET_BASE register in CM GCR
  hw/mips_cpc: make VP correctly start from the reset vector
  target-mips: add exception base to MIPS CPU
  hw/mips/cps: create GIC block inside CPS
  hw/mips: implement Global Interrupt Controller
  hw/mips: implement GIC Interval Timer

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2016-07-12 12:34:41 +01:00
parent c1ac514a04 cdc46fab07
commit 74e1b782b3
18 changed files with 1059 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
hw/intc/Makefile.objs
View File

@ -37,3 +37,4 @@ obj-$(CONFIG_S390_FLIC) += s390_flic.o
obj-$(CONFIG_S390_FLIC_KVM) += s390_flic_kvm.o
obj-$(CONFIG_ASPEED_SOC) += aspeed_vic.o
obj-$(CONFIG_ARM_GIC) += arm_gicv3_cpuif.o
obj-$(CONFIG_MIPS_CPS) += mips_gic.o

460
hw/intc/mips_gic.c Normal file
View File

@ -0,0 +1,460 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
* Authors: Sanjay Lal <sanjayl@kymasys.com>
*
* Copyright (C) 2016 Imagination Technologies
*/
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "qapi/error.h"
#include "hw/hw.h"
#include "hw/sysbus.h"
#include "exec/memory.h"
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
#include "kvm_mips.h"
#include "hw/intc/mips_gic.h"
static void mips_gic_set_vp_irq(MIPSGICState *gic, int vp, int pin, int level)
{
int ored_level = level;
int i;
/* ORing pending registers sharing same pin */
if (!ored_level) {
for (i = 0; i < gic->num_irq; i++) {
if ((gic->irq_state[i].map_pin & GIC_MAP_MSK) == pin &&
gic->irq_state[i].map_vp == vp &&
gic->irq_state[i].enabled) {
ored_level |= gic->irq_state[i].pending;
}
if (ored_level) {
/* no need to iterate all interrupts */
break;
}
}
if (((gic->vps[vp].compare_map & GIC_MAP_MSK) == pin) &&
(gic->vps[vp].mask & GIC_VP_MASK_CMP_MSK)) {
/* ORing with local pending register (count/compare) */
ored_level |= (gic->vps[vp].pend & GIC_VP_MASK_CMP_MSK) >>
GIC_VP_MASK_CMP_SHF;
}
}
if (kvm_enabled()) {
kvm_mips_set_ipi_interrupt(mips_env_get_cpu(gic->vps[vp].env),
pin + GIC_CPU_PIN_OFFSET,
ored_level);
} else {
qemu_set_irq(gic->vps[vp].env->irq[pin + GIC_CPU_PIN_OFFSET],
ored_level);
}
}
static void gic_set_irq(void *opaque, int n_IRQ, int level)
{
MIPSGICState *gic = (MIPSGICState *) opaque;
int vp = gic->irq_state[n_IRQ].map_vp;
int pin = gic->irq_state[n_IRQ].map_pin & GIC_MAP_MSK;
gic->irq_state[n_IRQ].pending = (uint8_t) level;
if (!gic->irq_state[n_IRQ].enabled) {
/* GIC interrupt source disabled */
return;
}
if (vp < 0 || vp >= gic->num_vps) {
return;
}
mips_gic_set_vp_irq(gic, vp, pin, level);
}
#define OFFSET_CHECK(c) \
do { \
if (!(c)) { \
goto bad_offset; \
} \
} while (0)
/* GIC Read VP Local/Other Registers */
static uint64_t gic_read_vp(MIPSGICState *gic, uint32_t vp_index, hwaddr addr,
unsigned size)
{
switch (addr) {
case GIC_VP_CTL_OFS:
return gic->vps[vp_index].ctl;
case GIC_VP_PEND_OFS:
mips_gictimer_get_sh_count(gic->gic_timer);
return gic->vps[vp_index].pend;
case GIC_VP_MASK_OFS:
return gic->vps[vp_index].mask;
case GIC_VP_COMPARE_MAP_OFS:
return gic->vps[vp_index].compare_map;
case GIC_VP_OTHER_ADDR_OFS:
return gic->vps[vp_index].other_addr;
case GIC_VP_IDENT_OFS:
return vp_index;
case GIC_VP_COMPARE_LO_OFS:
return mips_gictimer_get_vp_compare(gic->gic_timer, vp_index);
case GIC_VP_COMPARE_HI_OFS:
return 0;
default:
qemu_log_mask(LOG_UNIMP, "Read %d bytes at GIC offset LOCAL/OTHER 0x%"
PRIx64 "\n", size, addr);
break;
}
return 0;
}
static uint64_t gic_read(void *opaque, hwaddr addr, unsigned size)
{
MIPSGICState *gic = (MIPSGICState *) opaque;
uint32_t vp_index = current_cpu->cpu_index;
uint64_t ret = 0;
int i, base, irq_src;
uint32_t other_index;
switch (addr) {
case GIC_SH_CONFIG_OFS:
ret = gic->sh_config | (mips_gictimer_get_countstop(gic->gic_timer) <<
GIC_SH_CONFIG_COUNTSTOP_SHF);
break;
case GIC_SH_COUNTERLO_OFS:
ret = mips_gictimer_get_sh_count(gic->gic_timer);
break;
case GIC_SH_COUNTERHI_OFS:
ret = 0;
break;
case GIC_SH_PEND_OFS ... GIC_SH_PEND_LAST_OFS:
/* each bit represents pending status for an interrupt pin */
base = (addr - GIC_SH_PEND_OFS) * 8;
OFFSET_CHECK((base + size * 8) <= gic->num_irq);
for (i = 0; i < size * 8; i++) {
ret |= (uint64_t) (gic->irq_state[base + i].pending) << i;
}
break;
case GIC_SH_MASK_OFS ... GIC_SH_MASK_LAST_OFS:
/* each bit represents status for an interrupt pin */
base = (addr - GIC_SH_MASK_OFS) * 8;
OFFSET_CHECK((base + size * 8) <= gic->num_irq);
for (i = 0; i < size * 8; i++) {
ret |= (uint64_t) (gic->irq_state[base + i].enabled) << i;
}
break;
case GIC_SH_MAP0_PIN_OFS ... GIC_SH_MAP255_PIN_OFS:
/* 32 bits per a pin */
irq_src = (addr - GIC_SH_MAP0_PIN_OFS) / 4;
OFFSET_CHECK(irq_src < gic->num_irq);
ret = gic->irq_state[irq_src].map_pin;
break;
case GIC_SH_MAP0_VP_OFS ... GIC_SH_MAP255_VP_LAST_OFS:
/* up to 32 bytes per a pin */
irq_src = (addr - GIC_SH_MAP0_VP_OFS) / 32;
OFFSET_CHECK(irq_src < gic->num_irq);
if ((gic->irq_state[irq_src].map_vp) >= 0) {
ret = (uint64_t) 1 << (gic->irq_state[irq_src].map_vp);
} else {
ret = 0;
}
break;
/* VP-Local Register */
case VP_LOCAL_SECTION_OFS ... (VP_LOCAL_SECTION_OFS + GIC_VL_BRK_GROUP):
ret = gic_read_vp(gic, vp_index, addr - VP_LOCAL_SECTION_OFS, size);
break;
/* VP-Other Register */
case VP_OTHER_SECTION_OFS ... (VP_OTHER_SECTION_OFS + GIC_VL_BRK_GROUP):
other_index = gic->vps[vp_index].other_addr;
ret = gic_read_vp(gic, other_index, addr - VP_OTHER_SECTION_OFS, size);
break;
/* User-Mode Visible section */
case USM_VISIBLE_SECTION_OFS + GIC_USER_MODE_COUNTERLO:
ret = mips_gictimer_get_sh_count(gic->gic_timer);
break;
case USM_VISIBLE_SECTION_OFS + GIC_USER_MODE_COUNTERHI:
ret = 0;
break;
default:
qemu_log_mask(LOG_UNIMP, "Read %d bytes at GIC offset 0x%" PRIx64 "\n",
size, addr);
break;
}
return ret;
bad_offset:
qemu_log_mask(LOG_GUEST_ERROR, "Wrong GIC offset at 0x%" PRIx64 "\n", addr);
return 0;
}
static void gic_timer_expire_cb(void *opaque, uint32_t vp_index)
{
MIPSGICState *gic = opaque;
gic->vps[vp_index].pend |= (1 << GIC_LOCAL_INT_COMPARE);
if (gic->vps[vp_index].pend &
(gic->vps[vp_index].mask & GIC_VP_MASK_CMP_MSK)) {
if (gic->vps[vp_index].compare_map & GIC_MAP_TO_PIN_MSK) {
/* it is safe to set the irq high regardless of other GIC IRQs */
uint32_t pin = (gic->vps[vp_index].compare_map & GIC_MAP_MSK);
qemu_irq_raise(gic->vps[vp_index].env->irq
[pin + GIC_CPU_PIN_OFFSET]);
}
}
}
static void gic_timer_store_vp_compare(MIPSGICState *gic, uint32_t vp_index,
uint64_t compare)
{
gic->vps[vp_index].pend &= ~(1 << GIC_LOCAL_INT_COMPARE);
if (gic->vps[vp_index].compare_map & GIC_MAP_TO_PIN_MSK) {
uint32_t pin = (gic->vps[vp_index].compare_map & GIC_MAP_MSK);
mips_gic_set_vp_irq(gic, vp_index, pin, 0);
}
mips_gictimer_store_vp_compare(gic->gic_timer, vp_index, compare);
}
/* GIC Write VP Local/Other Registers */
static void gic_write_vp(MIPSGICState *gic, uint32_t vp_index, hwaddr addr,
uint64_t data, unsigned size)
{
switch (addr) {
case GIC_VP_CTL_OFS:
/* EIC isn't supported */
break;
case GIC_VP_RMASK_OFS:
gic->vps[vp_index].mask &= ~(data & GIC_VP_SET_RESET_MSK) &
GIC_VP_SET_RESET_MSK;
break;
case GIC_VP_SMASK_OFS:
gic->vps[vp_index].mask |= data & GIC_VP_SET_RESET_MSK;
break;
case GIC_VP_COMPARE_MAP_OFS:
/* EIC isn't supported */
OFFSET_CHECK((data & GIC_MAP_MSK) <= GIC_CPU_INT_MAX);
gic->vps[vp_index].compare_map = data & GIC_MAP_TO_PIN_REG_MSK;
break;
case GIC_VP_OTHER_ADDR_OFS:
OFFSET_CHECK(data < gic->num_vps);
gic->vps[vp_index].other_addr = data;
break;
case GIC_VP_COMPARE_LO_OFS:
gic_timer_store_vp_compare(gic, vp_index, data);
break;
default:
qemu_log_mask(LOG_UNIMP, "Write %d bytes at GIC offset LOCAL/OTHER "
"0x%" PRIx64" 0x%08" PRIx64 "\n", size, addr, data);
break;
}
return;
bad_offset:
qemu_log_mask(LOG_GUEST_ERROR, "Wrong GIC offset at 0x%" PRIx64 "\n", addr);
return;
}
static void gic_write(void *opaque, hwaddr addr, uint64_t data, unsigned size)
{
int intr;
MIPSGICState *gic = (MIPSGICState *) opaque;
uint32_t vp_index = current_cpu->cpu_index;
int i, base, irq_src;
uint32_t other_index;
switch (addr) {
case GIC_SH_CONFIG_OFS:
{
uint32_t pre_cntstop = mips_gictimer_get_countstop(gic->gic_timer);
uint32_t new_cntstop = (data & GIC_SH_CONFIG_COUNTSTOP_MSK) >>
GIC_SH_CONFIG_COUNTSTOP_SHF;
if (pre_cntstop != new_cntstop) {
if (new_cntstop == 1) {
mips_gictimer_stop_count(gic->gic_timer);
} else {
mips_gictimer_start_count(gic->gic_timer);
}
}
}
break;
case GIC_SH_COUNTERLO_OFS:
if (mips_gictimer_get_countstop(gic->gic_timer)) {
mips_gictimer_store_sh_count(gic->gic_timer, data);
}
break;
case GIC_SH_RMASK_OFS ... GIC_SH_RMASK_LAST_OFS:
/* up to 64 bits per a pin */
base = (addr - GIC_SH_RMASK_OFS) * 8;
OFFSET_CHECK((base + size * 8) <= gic->num_irq);
for (i = 0; i < size * 8; i++) {
gic->irq_state[base + i].enabled &= !((data >> i) & 1);
}
break;
case GIC_SH_WEDGE_OFS:
/* Figure out which VP/HW Interrupt this maps to */
intr = data & ~GIC_SH_WEDGE_RW_MSK;
/* Mask/Enabled Checks */
OFFSET_CHECK(intr < gic->num_irq);
if (data & GIC_SH_WEDGE_RW_MSK) {
gic_set_irq(gic, intr, 1);
} else {
gic_set_irq(gic, intr, 0);
}
break;
case GIC_SH_SMASK_OFS ... GIC_SH_SMASK_LAST_OFS:
/* up to 64 bits per a pin */
base = (addr - GIC_SH_SMASK_OFS) * 8;
OFFSET_CHECK((base + size * 8) <= gic->num_irq);
for (i = 0; i < size * 8; i++) {
gic->irq_state[base + i].enabled |= (data >> i) & 1;
}
break;
case GIC_SH_MAP0_PIN_OFS ... GIC_SH_MAP255_PIN_OFS:
/* 32 bits per a pin */
irq_src = (addr - GIC_SH_MAP0_PIN_OFS) / 4;
OFFSET_CHECK(irq_src < gic->num_irq);
/* EIC isn't supported */
OFFSET_CHECK((data & GIC_MAP_MSK) <= GIC_CPU_INT_MAX);
gic->irq_state[irq_src].map_pin = data & GIC_MAP_TO_PIN_REG_MSK;
break;
case GIC_SH_MAP0_VP_OFS ... GIC_SH_MAP255_VP_LAST_OFS:
/* up to 32 bytes per a pin */
irq_src = (addr - GIC_SH_MAP0_VP_OFS) / 32;
OFFSET_CHECK(irq_src < gic->num_irq);
data = data ? ctz64(data) : -1;
OFFSET_CHECK(data < gic->num_vps);
gic->irq_state[irq_src].map_vp = data;
break;
case VP_LOCAL_SECTION_OFS ... (VP_LOCAL_SECTION_OFS + GIC_VL_BRK_GROUP):
gic_write_vp(gic, vp_index, addr - VP_LOCAL_SECTION_OFS, data, size);
break;
case VP_OTHER_SECTION_OFS ... (VP_OTHER_SECTION_OFS + GIC_VL_BRK_GROUP):
other_index = gic->vps[vp_index].other_addr;
gic_write_vp(gic, other_index, addr - VP_OTHER_SECTION_OFS, data, size);
break;
case USM_VISIBLE_SECTION_OFS + GIC_USER_MODE_COUNTERLO:
case USM_VISIBLE_SECTION_OFS + GIC_USER_MODE_COUNTERHI:
/* do nothing. Read-only section */
break;
default:
qemu_log_mask(LOG_UNIMP, "Write %d bytes at GIC offset 0x%" PRIx64
" 0x%08" PRIx64 "\n", size, addr, data);
break;
}
return;
bad_offset:
qemu_log_mask(LOG_GUEST_ERROR, "Wrong GIC offset at 0x%" PRIx64 "\n", addr);
}
static void gic_reset(void *opaque)
{
int i;
MIPSGICState *gic = (MIPSGICState *) opaque;
int numintrs = (gic->num_irq / 8) - 1;
gic->sh_config = /* COUNTSTOP = 0 it is accessible via MIPSGICTimer*/
/* CounterHi not implemented */
(0 << GIC_SH_CONFIG_COUNTBITS_SHF) |
(numintrs << GIC_SH_CONFIG_NUMINTRS_SHF) |
(gic->num_vps << GIC_SH_CONFIG_PVPS_SHF);
for (i = 0; i < gic->num_vps; i++) {
gic->vps[i].ctl = 0x0;
gic->vps[i].pend = 0x0;
/* PERFCNT, TIMER and WD not implemented */
gic->vps[i].mask = 0x32;
gic->vps[i].compare_map = GIC_MAP_TO_PIN_MSK;
mips_gictimer_store_vp_compare(gic->gic_timer, i, 0xffffffff);
gic->vps[i].other_addr = 0x0;
}
for (i = 0; i < gic->num_irq; i++) {
gic->irq_state[i].enabled = 0;
gic->irq_state[i].pending = 0;
gic->irq_state[i].map_pin = GIC_MAP_TO_PIN_MSK;
gic->irq_state[i].map_vp = -1;
}
mips_gictimer_store_sh_count(gic->gic_timer, 0);
/* COUNTSTOP = 0 */
mips_gictimer_start_count(gic->gic_timer);
}
static const MemoryRegionOps gic_ops = {
.read = gic_read,
.write = gic_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.max_access_size = 8,
},
};
static void mips_gic_init(Object *obj)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
MIPSGICState *s = MIPS_GIC(obj);
memory_region_init_io(&s->mr, OBJECT(s), &gic_ops, s,
"mips-gic", GIC_ADDRSPACE_SZ);
sysbus_init_mmio(sbd, &s->mr);
qemu_register_reset(gic_reset, s);
}
static void mips_gic_realize(DeviceState *dev, Error **errp)
{
MIPSGICState *s = MIPS_GIC(dev);
CPUState *cs = first_cpu;
int i;
if (s->num_vps > GIC_MAX_VPS) {
error_setg(errp, "Exceeded maximum CPUs %d", s->num_vps);
return;
}
if ((s->num_irq > GIC_MAX_INTRS) || (s->num_irq % 8) || (s->num_irq <= 0)) {
error_setg(errp, "GIC supports up to %d external interrupts in "
"multiples of 8 : %d", GIC_MAX_INTRS, s->num_irq);
return;
}
s->vps = g_new(MIPSGICVPState, s->num_vps);
s->irq_state = g_new(MIPSGICIRQState, s->num_irq);
/* Register the env for all VPs with the GIC */
for (i = 0; i < s->num_vps; i++) {
if (cs != NULL) {
s->vps[i].env = cs->env_ptr;
cs = CPU_NEXT(cs);
} else {
error_setg(errp,
"Unable to initialize GIC, CPUState for CPU#%d not valid.", i);
return;
}
}
s->gic_timer = mips_gictimer_init(s, s->num_vps, gic_timer_expire_cb);
qdev_init_gpio_in(dev, gic_set_irq, s->num_irq);
for (i = 0; i < s->num_irq; i++) {
s->irq_state[i].irq = qdev_get_gpio_in(dev, i);
}
}
static Property mips_gic_properties[] = {
DEFINE_PROP_INT32("num-vp", MIPSGICState, num_vps, 1),
DEFINE_PROP_INT32("num-irq", MIPSGICState, num_irq, 256),
DEFINE_PROP_END_OF_LIST(),
};
static void mips_gic_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->props = mips_gic_properties;
dc->realize = mips_gic_realize;
}
static const TypeInfo mips_gic_info = {
.name = TYPE_MIPS_GIC,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(MIPSGICState),
.instance_init = mips_gic_init,
.class_init = mips_gic_class_init,
};
static void mips_gic_register_types(void)
{
type_register_static(&mips_gic_info);
}
type_init(mips_gic_register_types)

25
hw/mips/cps.c
View File

@ -26,13 +26,8 @@
qemu_irq get_cps_irq(MIPSCPSState *s, int pin_number)
{
MIPSCPU *cpu = MIPS_CPU(first_cpu);
CPUMIPSState *env = &cpu->env;
assert(pin_number < s->num_irq);
/* TODO: return GIC pins once implemented */
return env->irq[pin_number];
return s->gic.irq_state[pin_number].irq;
}
static void mips_cps_init(Object *obj)
@ -130,6 +125,21 @@ static void mips_cps_realize(DeviceState *dev, Error **errp)
memory_region_add_subregion(&s->container, 0,
sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->cpc), 0));
/* Global Interrupt Controller */
object_initialize(&s->gic, sizeof(s->gic), TYPE_MIPS_GIC);
qdev_set_parent_bus(DEVICE(&s->gic), sysbus_get_default());
object_property_set_int(OBJECT(&s->gic), s->num_vp, "num-vp", &err);
object_property_set_int(OBJECT(&s->gic), 128, "num-irq", &err);
object_property_set_bool(OBJECT(&s->gic), true, "realized", &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion(&s->container, 0,
sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gic), 0));
/* Global Configuration Registers */
gcr_base = env->CP0_CMGCRBase << 4;
@ -139,6 +149,7 @@ static void mips_cps_realize(DeviceState *dev, Error **errp)
object_property_set_int(OBJECT(&s->gcr), s->num_vp, "num-vp", &err);
object_property_set_int(OBJECT(&s->gcr), 0x800, "gcr-rev", &err);
object_property_set_int(OBJECT(&s->gcr), gcr_base, "gcr-base", &err);
object_property_set_link(OBJECT(&s->gcr), OBJECT(&s->gic.mr), "gic", &err);
object_property_set_link(OBJECT(&s->gcr), OBJECT(&s->cpc.mr), "cpc", &err);
object_property_set_bool(OBJECT(&s->gcr), true, "realized", &err);
if (err != NULL) {
@ -152,7 +163,7 @@ static void mips_cps_realize(DeviceState *dev, Error **errp)
static Property mips_cps_properties[] = {
DEFINE_PROP_UINT32("num-vp", MIPSCPSState, num_vp, 1),
DEFINE_PROP_UINT32("num-irq", MIPSCPSState, num_irq, 8),
DEFINE_PROP_UINT32("num-irq", MIPSCPSState, num_irq, 256),
DEFINE_PROP_STRING("cpu-model", MIPSCPSState, cpu_model),
DEFINE_PROP_END_OF_LIST()
};

4
hw/mips/mips_malta.c
View File

@ -955,9 +955,7 @@ static void create_cps(MaltaState *s, const char *cpu_model,
sysbus_mmio_map_overlap(SYS_BUS_DEVICE(s->cps), 0, 0, 1);
/* FIXME: When GIC is present then we should use GIC's IRQ 3.
Until then CPS exposes CPU's IRQs thus use the default IRQ 2. */
*i8259_irq = get_cps_irq(s->cps, 2);
*i8259_irq = get_cps_irq(s->cps, 3);
*cbus_irq = NULL;
}

87
hw/misc/mips_cmgcr.c
View File

@ -17,12 +17,18 @@
#include "sysemu/sysemu.h"
#include "hw/misc/mips_cmgcr.h"
#include "hw/misc/mips_cpc.h"
#include "hw/intc/mips_gic.h"
static inline bool is_cpc_connected(MIPSGCRState *s)
{
return s->cpc_mr != NULL;
}
static inline bool is_gic_connected(MIPSGCRState *s)
{
return s->gic_mr != NULL;
}
static inline void update_cpc_base(MIPSGCRState *gcr, uint64_t val)
{
if (is_cpc_connected(gcr)) {
@ -36,10 +42,25 @@ static inline void update_cpc_base(MIPSGCRState *gcr, uint64_t val)
}
}
static inline void update_gic_base(MIPSGCRState *gcr, uint64_t val)
{
if (is_gic_connected(gcr)) {
gcr->gic_base = val & GCR_GIC_BASE_MSK;
memory_region_transaction_begin();
memory_region_set_address(gcr->gic_mr,
gcr->gic_base & GCR_GIC_BASE_GICBASE_MSK);
memory_region_set_enabled(gcr->gic_mr,
gcr->gic_base & GCR_GIC_BASE_GICEN_MSK);
memory_region_transaction_commit();
}
}
/* Read GCR registers */
static uint64_t gcr_read(void *opaque, hwaddr addr, unsigned size)
{
MIPSGCRState *gcr = (MIPSGCRState *) opaque;
MIPSGCRVPState *current_vps = &gcr->vps[current_cpu->cpu_index];
MIPSGCRVPState *other_vps = &gcr->vps[current_vps->other];
switch (addr) {
/* Global Control Block Register */
@ -50,8 +71,12 @@ static uint64_t gcr_read(void *opaque, hwaddr addr, unsigned size)
return gcr->gcr_base;
case GCR_REV_OFS:
return gcr->gcr_rev;
case GCR_GIC_BASE_OFS:
return gcr->gic_base;
case GCR_CPC_BASE_OFS:
return gcr->cpc_base;
case GCR_GIC_STATUS_OFS:
return is_gic_connected(gcr);
case GCR_CPC_STATUS_OFS:
return is_cpc_connected(gcr);
case GCR_L2_CONFIG_OFS:
@ -62,8 +87,14 @@ static uint64_t gcr_read(void *opaque, hwaddr addr, unsigned size)
case MIPS_COCB_OFS + GCR_CL_CONFIG_OFS:
/* Set PVP to # of VPs - 1 */
return gcr->num_vps - 1;
case MIPS_CLCB_OFS + GCR_CL_RESETBASE_OFS:
return current_vps->reset_base;
case MIPS_COCB_OFS + GCR_CL_RESETBASE_OFS:
return other_vps->reset_base;
case MIPS_CLCB_OFS + GCR_CL_OTHER_OFS:
return 0;
return current_vps->other;
case MIPS_COCB_OFS + GCR_CL_OTHER_OFS:
return other_vps->other;
default:
qemu_log_mask(LOG_UNIMP, "Read %d bytes at GCR offset 0x%" HWADDR_PRIx
"\n", size, addr);
@ -72,15 +103,46 @@ static uint64_t gcr_read(void *opaque, hwaddr addr, unsigned size)
return 0;
}
static inline target_ulong get_exception_base(MIPSGCRVPState *vps)
{
/* TODO: BEV_BASE and SELECT_BEV */
return (int32_t)(vps->reset_base & GCR_CL_RESET_BASE_RESETBASE_MSK);
}
/* Write GCR registers */
static void gcr_write(void *opaque, hwaddr addr, uint64_t data, unsigned size)
{
MIPSGCRState *gcr = (MIPSGCRState *)opaque;
MIPSGCRVPState *current_vps = &gcr->vps[current_cpu->cpu_index];
MIPSGCRVPState *other_vps = &gcr->vps[current_vps->other];
switch (addr) {
case GCR_GIC_BASE_OFS:
update_gic_base(gcr, data);
break;
case GCR_CPC_BASE_OFS:
update_cpc_base(gcr, data);
break;
case MIPS_CLCB_OFS + GCR_CL_RESETBASE_OFS:
current_vps->reset_base = data & GCR_CL_RESET_BASE_MSK;
cpu_set_exception_base(current_cpu->cpu_index,
get_exception_base(current_vps));
break;
case MIPS_COCB_OFS + GCR_CL_RESETBASE_OFS:
other_vps->reset_base = data & GCR_CL_RESET_BASE_MSK;
cpu_set_exception_base(current_vps->other,
get_exception_base(other_vps));
break;
case MIPS_CLCB_OFS + GCR_CL_OTHER_OFS:
if ((data & GCR_CL_OTHER_MSK) < gcr->num_vps) {
current_vps->other = data & GCR_CL_OTHER_MSK;
}
break;
case MIPS_COCB_OFS + GCR_CL_OTHER_OFS:
if ((data & GCR_CL_OTHER_MSK) < gcr->num_vps) {
other_vps->other = data & GCR_CL_OTHER_MSK;
}
break;
default:
qemu_log_mask(LOG_UNIMP, "Write %d bytes at GCR offset 0x%" HWADDR_PRIx
" 0x%" PRIx64 "\n", size, addr, data);
@ -102,6 +164,12 @@ static void mips_gcr_init(Object *obj)
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
MIPSGCRState *s = MIPS_GCR(obj);
object_property_add_link(obj, "gic", TYPE_MEMORY_REGION,
(Object **)&s->gic_mr,
qdev_prop_allow_set_link_before_realize,
OBJ_PROP_LINK_UNREF_ON_RELEASE,
&error_abort);
object_property_add_link(obj, "cpc", TYPE_MEMORY_REGION,
(Object **)&s->cpc_mr,
qdev_prop_allow_set_link_before_realize,
@ -116,8 +184,16 @@ static void mips_gcr_init(Object *obj)
static void mips_gcr_reset(DeviceState *dev)
{
MIPSGCRState *s = MIPS_GCR(dev);
int i;
update_gic_base(s, 0);
update_cpc_base(s, 0);
for (i = 0; i < s->num_vps; i++) {
s->vps[i].other = 0;
s->vps[i].reset_base = 0xBFC00000 & GCR_CL_RESET_BASE_MSK;
cpu_set_exception_base(i, get_exception_base(&s->vps[i]));
}
}
static const VMStateDescription vmstate_mips_gcr = {
@ -137,12 +213,21 @@ static Property mips_gcr_properties[] = {
DEFINE_PROP_END_OF_LIST(),
};
static void mips_gcr_realize(DeviceState *dev, Error **errp)
{
MIPSGCRState *s = MIPS_GCR(dev);
/* Create local set of registers for each VP */
s->vps = g_new(MIPSGCRVPState, s->num_vps);
}
static void mips_gcr_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->props = mips_gcr_properties;
dc->vmsd = &vmstate_mips_gcr;
dc->reset = mips_gcr_reset;
dc->realize = mips_gcr_realize;
}
static const TypeInfo mips_gcr_info = {

5
hw/misc/mips_cpc.c
View File

@ -37,7 +37,7 @@ static void cpc_run_vp(MIPSCPCState *cpc, uint64_t vp_run)
CPU_FOREACH(cs) {
uint64_t i = 1ULL << cs->cpu_index;
if (i & vp_run & ~cpc->vp_running) {
cpu_interrupt(cs, CPU_INTERRUPT_WAKE);
cpu_reset(cs);
cpc->vp_running |= i;
}
}
@ -50,8 +50,7 @@ static void cpc_stop_vp(MIPSCPCState *cpc, uint64_t vp_stop)
CPU_FOREACH(cs) {
uint64_t i = 1ULL << cs->cpu_index;
if (i & vp_stop & cpc->vp_running) {
cs->halted = 1;
cpu_reset_interrupt(cs, CPU_INTERRUPT_WAKE);
cpu_interrupt(cs, CPU_INTERRUPT_HALT);
cpc->vp_running &= ~i;
}
}

1
hw/timer/Makefile.objs
View File

@ -26,6 +26,7 @@ obj-$(CONFIG_OMAP) += omap_synctimer.o
obj-$(CONFIG_PXA2XX) += pxa2xx_timer.o
obj-$(CONFIG_SH4) += sh_timer.o
obj-$(CONFIG_DIGIC) += digic-timer.o
obj-$(CONFIG_MIPS_CPS) += mips_gictimer.o
obj-$(CONFIG_MC146818RTC) += mc146818rtc.o

142
hw/timer/mips_gictimer.c Normal file
View File

@ -0,0 +1,142 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2016 Imagination Technologies
*/
#include "qemu/osdep.h"
#include "hw/hw.h"
#include "hw/sysbus.h"
#include "qemu/timer.h"
#include "hw/timer/mips_gictimer.h"
#define TIMER_PERIOD 10 /* 10 ns period for 100 Mhz frequency */
static void gic_vptimer_update(MIPSGICTimerState *gictimer,
uint32_t vp_index, uint64_t now)
{
uint64_t next;
uint32_t wait;
wait = gictimer->vptimers[vp_index].comparelo - gictimer->sh_counterlo -
(uint32_t)(now / TIMER_PERIOD);
next = now + (uint64_t)wait * TIMER_PERIOD;
timer_mod(gictimer->vptimers[vp_index].qtimer, next);
}
static void gic_vptimer_expire(MIPSGICTimerState *gictimer, uint32_t vp_index,
uint64_t now)
{
if (gictimer->countstop) {
/* timer stopped */
return;
}
gictimer->cb(gictimer->opaque, vp_index);
gic_vptimer_update(gictimer, vp_index, now);
}
static void gic_vptimer_cb(void *opaque)
{
MIPSGICTimerVPState *vptimer = opaque;
MIPSGICTimerState *gictimer = vptimer->gictimer;
gic_vptimer_expire(gictimer, vptimer->vp_index,
qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
}
uint32_t mips_gictimer_get_sh_count(MIPSGICTimerState *gictimer)
{
int i;
if (gictimer->countstop) {
return gictimer->sh_counterlo;
} else {
uint64_t now;
now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
for (i = 0; i < gictimer->num_vps; i++) {
if (timer_pending(gictimer->vptimers[i].qtimer)
&& timer_expired(gictimer->vptimers[i].qtimer, now)) {
/* The timer has already expired. */
gic_vptimer_expire(gictimer, i, now);
}
}
return gictimer->sh_counterlo + (uint32_t)(now / TIMER_PERIOD);
}
}
void mips_gictimer_store_sh_count(MIPSGICTimerState *gictimer, uint64_t count)
{
int i;
uint64_t now;
if (gictimer->countstop || !gictimer->vptimers[0].qtimer) {
gictimer->sh_counterlo = count;
} else {
/* Store new count register */
now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
gictimer->sh_counterlo = count - (uint32_t)(now / TIMER_PERIOD);
/* Update timer timer */
for (i = 0; i < gictimer->num_vps; i++) {
gic_vptimer_update(gictimer, i, now);
}
}
}
uint32_t mips_gictimer_get_vp_compare(MIPSGICTimerState *gictimer,
uint32_t vp_index)
{
return gictimer->vptimers[vp_index].comparelo;
}
void mips_gictimer_store_vp_compare(MIPSGICTimerState *gictimer,
uint32_t vp_index, uint64_t compare)
{
gictimer->vptimers[vp_index].comparelo = (uint32_t) compare;
gic_vptimer_update(gictimer, vp_index,
qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
}
uint8_t mips_gictimer_get_countstop(MIPSGICTimerState *gictimer)
{
return gictimer->countstop;
}
void mips_gictimer_start_count(MIPSGICTimerState *gictimer)
{
gictimer->countstop = 0;
mips_gictimer_store_sh_count(gictimer, gictimer->sh_counterlo);
}
void mips_gictimer_stop_count(MIPSGICTimerState *gictimer)
{
int i;
gictimer->countstop = 1;
/* Store the current value */
gictimer->sh_counterlo +=
(uint32_t)(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / TIMER_PERIOD);
for (i = 0; i < gictimer->num_vps; i++) {
timer_del(gictimer->vptimers[i].qtimer);
}
}
MIPSGICTimerState *mips_gictimer_init(void *opaque, uint32_t nvps,
MIPSGICTimerCB *cb)
{
int i;
MIPSGICTimerState *gictimer = g_new(MIPSGICTimerState, 1);
gictimer->vptimers = g_new(MIPSGICTimerVPState, nvps);
gictimer->countstop = 1;
gictimer->num_vps = nvps;
gictimer->opaque = opaque;
gictimer->cb = cb;
for (i = 0; i < nvps; i++) {
gictimer->vptimers[i].gictimer = gictimer;
gictimer->vptimers[i].vp_index = i;
gictimer->vptimers[i].qtimer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
&gic_vptimer_cb,
&gictimer->vptimers[i]);
}
return gictimer;
}

216
include/hw/intc/mips_gic.h Normal file
View File

@ -0,0 +1,216 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2000, 07 MIPS Technologies, Inc.
* Copyright (C) 2016 Imagination Technologies
*
*/
#ifndef _MIPS_GIC_H
#define _MIPS_GIC_H
#include "hw/timer/mips_gictimer.h"
#include "cpu.h"
/*
* GIC Specific definitions
*/
/* The MIPS default location */
#define GIC_BASE_ADDR 0x1bdc0000ULL
#define GIC_ADDRSPACE_SZ (128 * 1024)
/* Constants */
#define GIC_POL_POS 1
#define GIC_POL_NEG 0
#define GIC_TRIG_EDGE 1
#define GIC_TRIG_LEVEL 0
#define MSK(n) ((1ULL << (n)) - 1)
/* GIC Address Space */
#define SHARED_SECTION_OFS 0x0000
#define SHARED_SECTION_SIZE 0x8000
#define VP_LOCAL_SECTION_OFS 0x8000
#define VP_LOCAL_SECTION_SIZE 0x4000
#define VP_OTHER_SECTION_OFS 0xc000
#define VP_OTHER_SECTION_SIZE 0x4000
#define USM_VISIBLE_SECTION_OFS 0x10000
#define USM_VISIBLE_SECTION_SIZE 0x10000
/* Register Map for Shared Section */
#define GIC_SH_CONFIG_OFS 0x0000
/* Shared Global Counter */
#define GIC_SH_COUNTERLO_OFS 0x0010
#define GIC_SH_COUNTERHI_OFS 0x0014
#define GIC_SH_REVISIONID_OFS 0x0020
/* Set/Clear corresponding bit in Edge Detect Register */
#define GIC_SH_WEDGE_OFS 0x0280
/* Reset Mask - Disables Interrupt */
#define GIC_SH_RMASK_OFS 0x0300
#define GIC_SH_RMASK_LAST_OFS 0x031c
/* Set Mask (WO) - Enables Interrupt */
#define GIC_SH_SMASK_OFS 0x0380
#define GIC_SH_SMASK_LAST_OFS 0x039c
/* Global Interrupt Mask Register (RO) - Bit Set == Interrupt enabled */
#define GIC_SH_MASK_OFS 0x0400
#define GIC_SH_MASK_LAST_OFS 0x041c
/* Pending Global Interrupts (RO) */
#define GIC_SH_PEND_OFS 0x0480
#define GIC_SH_PEND_LAST_OFS 0x049c
#define GIC_SH_MAP0_PIN_OFS 0x0500
#define GIC_SH_MAP255_PIN_OFS 0x08fc
#define GIC_SH_MAP0_VP_OFS 0x2000
#define GIC_SH_MAP255_VP_LAST_OFS 0x3fe4
/* Register Map for Local Section */
#define GIC_VP_CTL_OFS 0x0000
#define GIC_VP_PEND_OFS 0x0004
#define GIC_VP_MASK_OFS 0x0008
#define GIC_VP_RMASK_OFS 0x000c
#define GIC_VP_SMASK_OFS 0x0010
#define GIC_VP_WD_MAP_OFS 0x0040
#define GIC_VP_COMPARE_MAP_OFS 0x0044
#define GIC_VP_TIMER_MAP_OFS 0x0048
#define GIC_VP_FDC_MAP_OFS 0x004c
#define GIC_VP_PERFCTR_MAP_OFS 0x0050
#define GIC_VP_SWINT0_MAP_OFS 0x0054
#define GIC_VP_SWINT1_MAP_OFS 0x0058
#define GIC_VP_OTHER_ADDR_OFS 0x0080
#define GIC_VP_IDENT_OFS 0x0088
#define GIC_VP_WD_CONFIG0_OFS 0x0090
#define GIC_VP_WD_COUNT0_OFS 0x0094
#define GIC_VP_WD_INITIAL0_OFS 0x0098
#define GIC_VP_COMPARE_LO_OFS 0x00a0
#define GIC_VP_COMPARE_HI_OFS 0x00a4
#define GIC_VL_BRK_GROUP 0x3080
/* User-Mode Visible Section Register */
/* Read-only alias for GIC Shared CounterLo */
#define GIC_USER_MODE_COUNTERLO 0x0000
/* Read-only alias for GIC Shared CounterHi */
#define GIC_USER_MODE_COUNTERHI 0x0004
/* Masks */
#define GIC_SH_CONFIG_COUNTSTOP_SHF 28
#define GIC_SH_CONFIG_COUNTSTOP_MSK (MSK(1) << GIC_SH_CONFIG_COUNTSTOP_SHF)
#define GIC_SH_CONFIG_COUNTBITS_SHF 24
#define GIC_SH_CONFIG_COUNTBITS_MSK (MSK(4) << GIC_SH_CONFIG_COUNTBITS_SHF)
#define GIC_SH_CONFIG_NUMINTRS_SHF 16
#define GIC_SH_CONFIG_NUMINTRS_MSK (MSK(8) << GIC_SH_CONFIG_NUMINTRS_SHF)
#define GIC_SH_CONFIG_PVPS_SHF 0
#define GIC_SH_CONFIG_PVPS_MSK (MSK(8) << GIC_SH_CONFIG_NUMVPS_SHF)
#define GIC_SH_WEDGE_RW_SHF 31
#define GIC_SH_WEDGE_RW_MSK (MSK(1) << GIC_SH_WEDGE_RW_SHF)
#define GIC_MAP_TO_PIN_SHF 31
#define GIC_MAP_TO_PIN_MSK (MSK(1) << GIC_MAP_TO_PIN_SHF)
#define GIC_MAP_TO_NMI_SHF 30
#define GIC_MAP_TO_NMI_MSK (MSK(1) << GIC_MAP_TO_NMI_SHF)
#define GIC_MAP_TO_YQ_SHF 29
#define GIC_MAP_TO_YQ_MSK (MSK(1) << GIC_MAP_TO_YQ_SHF)
#define GIC_MAP_SHF 0
#define GIC_MAP_MSK (MSK(6) << GIC_MAP_SHF)
#define GIC_MAP_TO_PIN_REG_MSK \
(GIC_MAP_TO_PIN_MSK | GIC_MAP_TO_NMI_MSK | GIC_MAP_TO_YQ_MSK | GIC_MAP_MSK)
/* GIC_VP_CTL Masks */
#define GIC_VP_CTL_FDC_RTBL_SHF 4
#define GIC_VP_CTL_FDC_RTBL_MSK (MSK(1) << GIC_VP_CTL_FDC_RTBL_SHF)
#define GIC_VP_CTL_SWINT_RTBL_SHF 3
#define GIC_VP_CTL_SWINT_RTBL_MSK (MSK(1) << GIC_VP_CTL_SWINT_RTBL_SHF)
#define GIC_VP_CTL_PERFCNT_RTBL_SHF 2
#define GIC_VP_CTL_PERFCNT_RTBL_MSK (MSK(1) << GIC_VP_CTL_PERFCNT_RTBL_SHF)
#define GIC_VP_CTL_TIMER_RTBL_SHF 1
#define GIC_VP_CTL_TIMER_RTBL_MSK (MSK(1) << GIC_VP_CTL_TIMER_RTBL_SHF)
#define GIC_VP_CTL_EIC_MODE_SHF 0
#define GIC_VP_CTL_EIC_MODE_MSK (MSK(1) << GIC_VP_CTL_EIC_MODE_SHF)
/* GIC_VP_MASK Masks */
#define GIC_VP_MASK_FDC_SHF 6
#define GIC_VP_MASK_FDC_MSK (MSK(1) << GIC_VP_MASK_FDC_SHF)
#define GIC_VP_MASK_SWINT1_SHF 5
#define GIC_VP_MASK_SWINT1_MSK (MSK(1) << GIC_VP_MASK_SWINT1_SHF)
#define GIC_VP_MASK_SWINT0_SHF 4
#define GIC_VP_MASK_SWINT0_MSK (MSK(1) << GIC_VP_MASK_SWINT0_SHF)
#define GIC_VP_MASK_PERFCNT_SHF 3
#define GIC_VP_MASK_PERFCNT_MSK (MSK(1) << GIC_VP_MASK_PERFCNT_SHF)
#define GIC_VP_MASK_TIMER_SHF 2
#define GIC_VP_MASK_TIMER_MSK (MSK(1) << GIC_VP_MASK_TIMER_SHF)
#define GIC_VP_MASK_CMP_SHF 1
#define GIC_VP_MASK_CMP_MSK (MSK(1) << GIC_VP_MASK_CMP_SHF)
#define GIC_VP_MASK_WD_SHF 0
#define GIC_VP_MASK_WD_MSK (MSK(1) << GIC_VP_MASK_WD_SHF)
#define GIC_VP_SET_RESET_MSK (MSK(7) << GIC_VP_MASK_WD_SHF)
#define GIC_CPU_INT_MAX 5 /* Core Interrupt 7 */
#define GIC_CPU_PIN_OFFSET 2
/* Local GIC interrupts. */
#define GIC_NUM_LOCAL_INTRS 7
#define GIC_LOCAL_INT_FDC 6 /* CPU fast debug channel */
#define GIC_LOCAL_INT_SWINT1 5 /* CPU software interrupt 1 */
#define GIC_LOCAL_INT_SWINT0 4 /* CPU software interrupt 0 */
#define GIC_LOCAL_INT_PERFCTR 3 /* CPU performance counter */
#define GIC_LOCAL_INT_TIMER 2 /* CPU timer interrupt */
#define GIC_LOCAL_INT_COMPARE 1 /* GIC count and compare timer */
#define GIC_LOCAL_INT_WD 0 /* GIC watchdog */
#define TYPE_MIPS_GIC "mips-gic"
#define MIPS_GIC(obj) OBJECT_CHECK(MIPSGICState, (obj), TYPE_MIPS_GIC)
/* Support up to 32 VPs and 256 IRQs */
#define GIC_MAX_VPS 32
#define GIC_MAX_INTRS 256
typedef struct MIPSGICState MIPSGICState;
typedef struct MIPSGICIRQState MIPSGICIRQState;
typedef struct MIPSGICVPState MIPSGICVPState;
struct MIPSGICIRQState {
uint8_t enabled;
uint8_t pending;
uint32_t map_pin;
int32_t map_vp;
qemu_irq irq;
};
struct MIPSGICVPState {
uint32_t ctl;
uint32_t pend;
uint32_t mask;
uint32_t compare_map;
uint32_t other_addr;
CPUMIPSState *env;
};
struct MIPSGICState {
SysBusDevice parent_obj;
MemoryRegion mr;
/* Shared Section Registers */
uint32_t sh_config;
MIPSGICIRQState *irq_state;
/* VP Local/Other Section Registers */
MIPSGICVPState *vps;
/* GIC VP Timer */
MIPSGICTimerState *gic_timer;
int32_t num_vps;
int32_t num_irq;
};
#endif /* _MIPS_GIC_H */

2
include/hw/mips/cps.h
View File

@ -22,6 +22,7 @@
#include "hw/sysbus.h"
#include "hw/misc/mips_cmgcr.h"
#include "hw/intc/mips_gic.h"
#include "hw/misc/mips_cpc.h"
#include "hw/misc/mips_itu.h"
@ -37,6 +38,7 @@ typedef struct MIPSCPSState {
MemoryRegion container;
MIPSGCRState gcr;
MIPSGICState gic;
MIPSCPCState cpc;
MIPSITUState itu;
} MIPSCPSState;

27
include/hw/misc/mips_cmgcr.h
View File

@ -26,23 +26,45 @@
#define GCR_CONFIG_OFS 0x0000
#define GCR_BASE_OFS 0x0008
#define GCR_REV_OFS 0x0030
#define GCR_GIC_BASE_OFS 0x0080
#define GCR_CPC_BASE_OFS 0x0088
#define GCR_GIC_STATUS_OFS 0x00D0
#define GCR_CPC_STATUS_OFS 0x00F0
#define GCR_L2_CONFIG_OFS 0x0130
/* Core Local and Core Other Block Register Map */
#define GCR_CL_CONFIG_OFS 0x0010
#define GCR_CL_OTHER_OFS 0x0018
#define GCR_CL_RESETBASE_OFS 0x0020
/* GCR_L2_CONFIG register fields */
#define GCR_L2_CONFIG_BYPASS_SHF 20
#define GCR_L2_CONFIG_BYPASS_MSK ((0x1ULL) << GCR_L2_CONFIG_BYPASS_SHF)
/* GCR_GIC_BASE register fields */
#define GCR_GIC_BASE_GICEN_MSK 1
#define GCR_GIC_BASE_GICBASE_MSK 0xFFFFFFFE0000ULL
#define GCR_GIC_BASE_MSK (GCR_GIC_BASE_GICEN_MSK | GCR_GIC_BASE_GICBASE_MSK)
/* GCR_CPC_BASE register fields */
#define GCR_CPC_BASE_CPCEN_MSK 1
#define GCR_CPC_BASE_CPCBASE_MSK 0xFFFFFFFF8000ULL
#define GCR_CPC_BASE_MSK (GCR_CPC_BASE_CPCEN_MSK | GCR_CPC_BASE_CPCBASE_MSK)
/* GCR_CL_OTHER_OFS register fields */
#define GCR_CL_OTHER_VPOTHER_MSK 0x7
#define GCR_CL_OTHER_MSK GCR_CL_OTHER_VPOTHER_MSK
/* GCR_CL_RESETBASE_OFS register fields */
#define GCR_CL_RESET_BASE_RESETBASE_MSK 0xFFFFF000U
#define GCR_CL_RESET_BASE_MSK GCR_CL_RESET_BASE_RESETBASE_MSK
typedef struct MIPSGCRVPState MIPSGCRVPState;
struct MIPSGCRVPState {
uint32_t other;
uint64_t reset_base;
};
typedef struct MIPSGCRState MIPSGCRState;
struct MIPSGCRState {
SysBusDevice parent_obj;
@ -52,8 +74,13 @@ struct MIPSGCRState {
hwaddr gcr_base;
MemoryRegion iomem;
MemoryRegion *cpc_mr;
MemoryRegion *gic_mr;
uint64_t cpc_base;
uint64_t gic_base;
/* VP Local/Other Registers */
MIPSGCRVPState *vps;
};
#endif /* _MIPS_GCR_H */

46
include/hw/timer/mips_gictimer.h Normal file
View File

@ -0,0 +1,46 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2016 Imagination Technologies
*
*/
#ifndef _MIPS_GICTIMER_H_
#define _MIPS_GICTIMER_H_
typedef struct MIPSGICTimerVPState MIPSGICTimerVPState;
typedef struct MIPSGICTimerState MIPSGICTimerState;
typedef void MIPSGICTimerCB(void *opaque, uint32_t vp_index);
struct MIPSGICTimerVPState {
QEMUTimer *qtimer;
uint32_t vp_index;
uint32_t comparelo;
MIPSGICTimerState *gictimer;
};
struct MIPSGICTimerState {
void *opaque;
uint8_t countstop;
uint32_t sh_counterlo;
int32_t num_vps;
MIPSGICTimerVPState *vptimers;
MIPSGICTimerCB *cb;
};
uint32_t mips_gictimer_get_sh_count(MIPSGICTimerState *gic);
void mips_gictimer_store_sh_count(MIPSGICTimerState *gic, uint64_t count);
uint32_t mips_gictimer_get_vp_compare(MIPSGICTimerState *gictimer,
uint32_t vp_index);
void mips_gictimer_store_vp_compare(MIPSGICTimerState *gic, uint32_t vp_index,
uint64_t compare);
uint8_t mips_gictimer_get_countstop(MIPSGICTimerState *gic);
void mips_gictimer_start_count(MIPSGICTimerState *gic);
void mips_gictimer_stop_count(MIPSGICTimerState *gic);
MIPSGICTimerState *mips_gictimer_init(void *opaque, uint32_t nvps,
MIPSGICTimerCB *cb);
#endif /* _MIPS_GICTIMER_H_ */

7
target-mips/cpu.h
View File

@ -19,7 +19,7 @@ typedef struct r4k_tlb_t r4k_tlb_t;
struct r4k_tlb_t {
target_ulong VPN;
uint32_t PageMask;
uint8_t ASID;
uint16_t ASID;
unsigned int G:1;
unsigned int C0:3;
unsigned int C1:3;
@ -343,6 +343,7 @@ struct CPUMIPSState {
int32_t CP0_Count;
target_ulong CP0_EntryHi;
#define CP0EnHi_EHINV 10
target_ulong CP0_EntryHi_ASID_mask;
int32_t CP0_Compare;
int32_t CP0_Status;
#define CP0St_CU3 31
@ -467,6 +468,7 @@ struct CPUMIPSState {
int32_t CP0_Config4_rw_bitmask;
#define CP0C4_M 31
#define CP0C4_IE 29
#define CP0C4_AE 28
#define CP0C4_KScrExist 16
#define CP0C4_MMUExtDef 14
#define CP0C4_FTLBPageSize 8
@ -503,6 +505,7 @@ struct CPUMIPSState {
int CP0_LLAddr_shift;
target_ulong CP0_WatchLo[8];
int32_t CP0_WatchHi[8];
#define CP0WH_ASID 16
target_ulong CP0_XContext;
int32_t CP0_Framemask;
int32_t CP0_Debug;
@ -616,6 +619,7 @@ struct CPUMIPSState {
void *irq[8];
QEMUTimer *timer; /* Internal timer */
MemoryRegion *itc_tag; /* ITC Configuration Tags */
target_ulong exception_base; /* ExceptionBase input to the core */
};
/**
@ -807,6 +811,7 @@ int cpu_mips_signal_handler(int host_signum, void *pinfo, void *puc);
#define cpu_init(cpu_model) CPU(cpu_mips_init(cpu_model))
bool cpu_supports_cps_smp(const char *cpu_model);
void cpu_set_exception_base(int vp_index, target_ulong address);
/* TODO QOM'ify CPU reset and remove */
void cpu_state_reset(CPUMIPSState *s);

16
target-mips/helper.c
View File

@ -67,7 +67,7 @@ int fixed_mmu_map_address (CPUMIPSState *env, hwaddr *physical, int *prot,
int r4k_map_address (CPUMIPSState *env, hwaddr *physical, int *prot,
target_ulong address, int rw, int access_type)
{
uint8_t ASID = env->CP0_EntryHi & 0xFF;
uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
int i;
for (i = 0; i < env->tlb->tlb_in_use; i++) {
@ -249,7 +249,7 @@ void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc)
cu = (v >> CP0St_CU0) & 0xf;
mx = (v >> CP0St_MX) & 0x1;
ksu = (v >> CP0St_KSU) & 0x3;
asid = env->CP0_EntryHi & 0xff;
asid = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
tcstatus = cu << CP0TCSt_TCU0;
tcstatus |= mx << CP0TCSt_TMX;
@ -395,8 +395,8 @@ static void raise_mmu_exception(CPUMIPSState *env, target_ulong address,
env->CP0_BadVAddr = address;
env->CP0_Context = (env->CP0_Context & ~0x007fffff) |
((address >> 9) & 0x007ffff0);
env->CP0_EntryHi =
(env->CP0_EntryHi & 0xFF) | (address & (TARGET_PAGE_MASK << 1));
env->CP0_EntryHi = (env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask) |
(address & (TARGET_PAGE_MASK << 1));
#if defined(TARGET_MIPS64)
env->CP0_EntryHi &= env->SEGMask;
env->CP0_XContext =
@ -640,7 +640,7 @@ void mips_cpu_do_interrupt(CPUState *cs)
/* EJTAG probe trap enable is not implemented... */
if (!(env->CP0_Status & (1 << CP0St_EXL)))
env->CP0_Cause &= ~(1U << CP0Ca_BD);
env->active_tc.PC = (int32_t)0xBFC00480;
env->active_tc.PC = env->exception_base + 0x480;
set_hflags_for_handler(env);
break;
case EXCP_RESET:
@ -667,7 +667,7 @@ void mips_cpu_do_interrupt(CPUState *cs)
env->hflags &= ~(MIPS_HFLAG_KSU);
if (!(env->CP0_Status & (1 << CP0St_EXL)))
env->CP0_Cause &= ~(1U << CP0Ca_BD);
env->active_tc.PC = (int32_t)0xBFC00000;
env->active_tc.PC = env->exception_base;
set_hflags_for_handler(env);
break;
case EXCP_EXT_INTERRUPT:
@ -849,7 +849,7 @@ void mips_cpu_do_interrupt(CPUState *cs)
}
env->hflags &= ~MIPS_HFLAG_BMASK;
if (env->CP0_Status & (1 << CP0St_BEV)) {
env->active_tc.PC = (int32_t)0xBFC00200;
env->active_tc.PC = env->exception_base + 0x200;
} else {
env->active_tc.PC = (int32_t)(env->CP0_EBase & ~0x3ff);
}
@ -898,7 +898,7 @@ void r4k_invalidate_tlb (CPUMIPSState *env, int idx, int use_extra)
r4k_tlb_t *tlb;
target_ulong addr;
target_ulong end;
uint8_t ASID = env->CP0_EntryHi & 0xFF;
uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
target_ulong mask;
tlb = &env->tlb->mmu.r4k.tlb[idx];

10
target-mips/machine.c
View File

@ -132,7 +132,7 @@ static int get_tlb(QEMUFile *f, void *pv, size_t size)
qemu_get_betls(f, &v->VPN);
qemu_get_be32s(f, &v->PageMask);
qemu_get_8s(f, &v->ASID);
qemu_get_be16s(f, &v->ASID);
qemu_get_be16s(f, &flags);
v->G = (flags >> 10) & 1;
v->C0 = (flags >> 7) & 3;
@ -156,7 +156,7 @@ static void put_tlb(QEMUFile *f, void *pv, size_t size)
{
r4k_tlb_t *v = pv;
uint8_t asid = v->ASID;
uint16_t asid = v->ASID;
uint16_t flags = ((v->EHINV << 15) |
(v->RI1 << 14) |
(v->RI0 << 13) |
@ -172,7 +172,7 @@ static void put_tlb(QEMUFile *f, void *pv, size_t size)
qemu_put_betls(f, &v->VPN);
qemu_put_be32s(f, &v->PageMask);
qemu_put_8s(f, &asid);
qemu_put_be16s(f, &asid);
qemu_put_be16s(f, &flags);
qemu_put_be64s(f, &v->PFN[0]);
qemu_put_be64s(f, &v->PFN[1]);
@ -192,8 +192,8 @@ const VMStateInfo vmstate_info_tlb = {
const VMStateDescription vmstate_tlb = {
.name = "cpu/tlb",
.version_id = 1,
.minimum_version_id = 1,
.version_id = 2,
.minimum_version_id = 2,
.fields = (VMStateField[]) {
VMSTATE_UINT32(nb_tlb, CPUMIPSTLBContext),
VMSTATE_UINT32(tlb_in_use, CPUMIPSTLBContext),

33
target-mips/op_helper.c
View File

@ -679,7 +679,7 @@ static void sync_c0_tcstatus(CPUMIPSState *cpu, int tc,
tcu = (v >> CP0TCSt_TCU0) & 0xf;
tmx = (v >> CP0TCSt_TMX) & 0x1;
tasid = v & 0xff;
tasid = v & cpu->CP0_EntryHi_ASID_mask;
tksu = (v >> CP0TCSt_TKSU) & 0x3;
status = tcu << CP0St_CU0;
@ -690,7 +690,7 @@ static void sync_c0_tcstatus(CPUMIPSState *cpu, int tc,
cpu->CP0_Status |= status;
/* Sync the TASID with EntryHi. */
cpu->CP0_EntryHi &= ~0xff;
cpu->CP0_EntryHi &= ~cpu->CP0_EntryHi_ASID_mask;
cpu->CP0_EntryHi |= tasid;
compute_hflags(cpu);
@ -702,7 +702,7 @@ static void sync_c0_entryhi(CPUMIPSState *cpu, int tc)
int32_t *tcst;
uint32_t asid, v = cpu->CP0_EntryHi;
asid = v & 0xff;
asid = v & cpu->CP0_EntryHi_ASID_mask;
if (tc == cpu->current_tc) {
tcst = &cpu->active_tc.CP0_TCStatus;
@ -710,7 +710,7 @@ static void sync_c0_entryhi(CPUMIPSState *cpu, int tc)
tcst = &cpu->tcs[tc].CP0_TCStatus;
}
*tcst &= ~0xff;
*tcst &= ~cpu->CP0_EntryHi_ASID_mask;
*tcst |= asid;
}
@ -1403,7 +1403,7 @@ void helper_mtc0_count(CPUMIPSState *env, target_ulong arg1)
void helper_mtc0_entryhi(CPUMIPSState *env, target_ulong arg1)
{
target_ulong old, val, mask;
mask = (TARGET_PAGE_MASK << 1) | 0xFF;
mask = (TARGET_PAGE_MASK << 1) | env->CP0_EntryHi_ASID_mask;
if (((env->CP0_Config4 >> CP0C4_IE) & 0x3) >= 2) {
mask |= 1 << CP0EnHi_EHINV;
}
@ -1429,8 +1429,10 @@ void helper_mtc0_entryhi(CPUMIPSState *env, target_ulong arg1)
sync_c0_entryhi(env, env->current_tc);
}
/* If the ASID changes, flush qemu's TLB. */
if ((old & 0xFF) != (val & 0xFF))
if ((old & env->CP0_EntryHi_ASID_mask) !=
(val & env->CP0_EntryHi_ASID_mask)) {
cpu_mips_tlb_flush(env, 1);
}
}
void helper_mttc0_entryhi(CPUMIPSState *env, target_ulong arg1)
@ -1631,7 +1633,8 @@ void helper_mtc0_watchlo(CPUMIPSState *env, target_ulong arg1, uint32_t sel)
void helper_mtc0_watchhi(CPUMIPSState *env, target_ulong arg1, uint32_t sel)
{
env->CP0_WatchHi[sel] = (arg1 & 0x40FF0FF8);
int mask = 0x40000FF8 | (env->CP0_EntryHi_ASID_mask << CP0WH_ASID);
env->CP0_WatchHi[sel] = arg1 & mask;
env->CP0_WatchHi[sel] &= ~(env->CP0_WatchHi[sel] & arg1 & 0x7);
}
@ -1989,7 +1992,7 @@ static void r4k_fill_tlb(CPUMIPSState *env, int idx)
#if defined(TARGET_MIPS64)
tlb->VPN &= env->SEGMask;
#endif
tlb->ASID = env->CP0_EntryHi & 0xFF;
tlb->ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
tlb->PageMask = env->CP0_PageMask;
tlb->G = env->CP0_EntryLo0 & env->CP0_EntryLo1 & 1;
tlb->V0 = (env->CP0_EntryLo0 & 2) != 0;
@ -2010,7 +2013,7 @@ void r4k_helper_tlbinv(CPUMIPSState *env)
{
int idx;
r4k_tlb_t *tlb;
uint8_t ASID = env->CP0_EntryHi & 0xFF;
uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
for (idx = 0; idx < env->tlb->nb_tlb; idx++) {
tlb = &env->tlb->mmu.r4k.tlb[idx];
@ -2036,7 +2039,7 @@ void r4k_helper_tlbwi(CPUMIPSState *env)
r4k_tlb_t *tlb;
int idx;
target_ulong VPN;
uint8_t ASID;
uint16_t ASID;
bool G, V0, D0, V1, D1;
idx = (env->CP0_Index & ~0x80000000) % env->tlb->nb_tlb;
@ -2045,7 +2048,7 @@ void r4k_helper_tlbwi(CPUMIPSState *env)
#if defined(TARGET_MIPS64)
VPN &= env->SEGMask;
#endif
ASID = env->CP0_EntryHi & 0xff;
ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
G = env->CP0_EntryLo0 & env->CP0_EntryLo1 & 1;
V0 = (env->CP0_EntryLo0 & 2) != 0;
D0 = (env->CP0_EntryLo0 & 4) != 0;
@ -2078,10 +2081,10 @@ void r4k_helper_tlbp(CPUMIPSState *env)
target_ulong mask;
target_ulong tag;
target_ulong VPN;
uint8_t ASID;
uint16_t ASID;
int i;
ASID = env->CP0_EntryHi & 0xFF;
ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
for (i = 0; i < env->tlb->nb_tlb; i++) {
tlb = &env->tlb->mmu.r4k.tlb[i];
/* 1k pages are not supported. */
@ -2133,10 +2136,10 @@ static inline uint64_t get_entrylo_pfn_from_tlb(uint64_t tlb_pfn)
void r4k_helper_tlbr(CPUMIPSState *env)
{
r4k_tlb_t *tlb;
uint8_t ASID;
uint16_t ASID;
int idx;
ASID = env->CP0_EntryHi & 0xFF;
ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
idx = (env->CP0_Index & ~0x80000000) % env->tlb->nb_tlb;
tlb = &env->tlb->mmu.r4k.tlb[idx];

11
target-mips/translate.c
View File

@ -20169,6 +20169,7 @@ MIPSCPU *cpu_mips_init(const char *cpu_model)
cpu = MIPS_CPU(object_new(TYPE_MIPS_CPU));
env = &cpu->env;
env->cpu_model = def;
env->exception_base = (int32_t)0xBFC00000;
#ifndef CONFIG_USER_ONLY
mmu_init(env, def);
@ -20191,6 +20192,12 @@ bool cpu_supports_cps_smp(const char *cpu_model)
return (def->CP0_Config3 & (1 << CP0C3_CMGCR)) != 0;
}
void cpu_set_exception_base(int vp_index, target_ulong address)
{
MIPSCPU *vp = MIPS_CPU(qemu_get_cpu(vp_index));
vp->env.exception_base = address;
}
void cpu_state_reset(CPUMIPSState *env)
{
MIPSCPU *cpu = mips_env_get_cpu(env);
@ -20281,7 +20288,7 @@ void cpu_state_reset(CPUMIPSState *env)
} else {
env->CP0_ErrorEPC = env->active_tc.PC;
}
env->active_tc.PC = (int32_t)0xBFC00000;
env->active_tc.PC = env->exception_base;
env->CP0_Random = env->tlb->nb_tlb - 1;
env->tlb->tlb_in_use = env->tlb->nb_tlb;
env->CP0_Wired = 0;
@ -20295,6 +20302,8 @@ void cpu_state_reset(CPUMIPSState *env)
if (env->CP0_Config3 & (1 << CP0C3_CMGCR)) {
env->CP0_CMGCRBase = 0x1fbf8000 >> 4;
}
env->CP0_EntryHi_ASID_mask = (env->CP0_Config4 & (1 << CP0C4_AE)) ?
0x3ff : 0xff;
env->CP0_Status = (1 << CP0St_BEV) | (1 << CP0St_ERL);
/* vectored interrupts not implemented, timer on int 7,
no performance counters. */

22
target-mips/translate_init.c
View File

@ -671,26 +671,23 @@ static const mips_def_t mips_defs[] =
.mmu_type = MMU_TYPE_R4000,
},
{
/* A generic CPU supporting MIPS64 Release 6 ISA.
FIXME: Support IEEE 754-2008 FP.
Eventually this should be replaced by a real CPU model. */
.name = "MIPS64R6-generic",
.CP0_PRid = 0x00010000,
.name = "I6400",
.CP0_PRid = 0x1A900,
.CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AR) | (0x2 << CP0C0_AT) |
(MMU_TYPE_R4000 << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (63 << CP0C1_MMU) |
(2 << CP0C1_IS) | (4 << CP0C1_IL) | (3 << CP0C1_IA) |
(2 << CP0C1_DS) | (4 << CP0C1_DL) | (3 << CP0C1_DA) |
.CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (15 << CP0C1_MMU) |
(2 << CP0C1_IS) | (5 << CP0C1_IL) | (3 << CP0C1_IA) |
(2 << CP0C1_DS) | (5 << CP0C1_DL) | (3 << CP0C1_DA) |
(0 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3 | (1U << CP0C3_M) |
(1 << CP0C3_CMGCR) | (1 << CP0C3_MSAP) |
(1 << CP0C3_BP) | (1 << CP0C3_BI) | (1 << CP0C3_ULRI) |
(1 << CP0C3_RXI) | (1 << CP0C3_LPA),
(1 << CP0C3_RXI) | (1 << CP0C3_LPA) | (1 << CP0C3_VInt),
.CP0_Config4 = MIPS_CONFIG4 | (1U << CP0C4_M) | (3 << CP0C4_IE) |
(0xfc << CP0C4_KScrExist),
(1 << CP0C4_AE) | (0xfc << CP0C4_KScrExist),
.CP0_Config5 = MIPS_CONFIG5 | (1 << CP0C5_XNP) | (1 << CP0C5_VP) |
(1 << CP0C5_LLB),
(1 << CP0C5_LLB) | (1 << CP0C5_MRP),
.CP0_Config5_rw_bitmask = (1 << CP0C5_MSAEn) | (1 << CP0C5_SBRI) |
(1 << CP0C5_FRE) | (1 << CP0C5_UFE),
.CP0_LLAddr_rw_bitmask = 0,
@ -703,9 +700,10 @@ static const mips_def_t mips_defs[] =
.CP0_PageGrain_rw_bitmask = (1 << CP0PG_ELPA),
.CP1_fcr0 = (1 << FCR0_FREP) | (1 << FCR0_HAS2008) | (1 << FCR0_F64) |
(1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) |
(1 << FCR0_S) | (0x00 << FCR0_PRID) | (0x0 << FCR0_REV),
(1 << FCR0_S) | (0x03 << FCR0_PRID) | (0x0 << FCR0_REV),
.CP1_fcr31 = (1 << FCR31_ABS2008) | (1 << FCR31_NAN2008),
.CP1_fcr31_rw_bitmask = 0x0103FFFF,
.MSAIR = 0x03 << MSAIR_ProcID,
.SEGBITS = 48,
.PABITS = 48,
.insn_flags = CPU_MIPS64R6 | ASE_MSA,