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authorDon Dugger <n0ano@n0ano.com>2016-06-03 03:33:22 +0000
committerGerrit Code Review <gerrit@172.30.200.206>2016-06-03 03:33:23 +0000
commitda27230f80795d0028333713f036d44c53cb0e68 (patch)
treeb3d379eaf000adf72b36cb01cdf4d79c3e3f064c /qemu/hw/misc/mips_cmgcr.c
parent0e68cb048bb8aadb14675f5d4286d8ab2fc35449 (diff)
parent437fd90c0250dee670290f9b714253671a990160 (diff)
Merge "These changes are the raw update to qemu-2.6."
Diffstat (limited to 'qemu/hw/misc/mips_cmgcr.c')
-rw-r--r--qemu/hw/misc/mips_cmgcr.c160
1 files changed, 160 insertions, 0 deletions
diff --git a/qemu/hw/misc/mips_cmgcr.c b/qemu/hw/misc/mips_cmgcr.c
new file mode 100644
index 000000000..37be23995
--- /dev/null
+++ b/qemu/hw/misc/mips_cmgcr.c
@@ -0,0 +1,160 @@
+/*
+ * 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) 2015 Imagination Technologies
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "hw/hw.h"
+#include "hw/sysbus.h"
+#include "sysemu/sysemu.h"
+#include "hw/misc/mips_cmgcr.h"
+#include "hw/misc/mips_cpc.h"
+
+static inline bool is_cpc_connected(MIPSGCRState *s)
+{
+ return s->cpc_mr != NULL;
+}
+
+static inline void update_cpc_base(MIPSGCRState *gcr, uint64_t val)
+{
+ if (is_cpc_connected(gcr)) {
+ gcr->cpc_base = val & GCR_CPC_BASE_MSK;
+ memory_region_transaction_begin();
+ memory_region_set_address(gcr->cpc_mr,
+ gcr->cpc_base & GCR_CPC_BASE_CPCBASE_MSK);
+ memory_region_set_enabled(gcr->cpc_mr,
+ gcr->cpc_base & GCR_CPC_BASE_CPCEN_MSK);
+ memory_region_transaction_commit();
+ }
+}
+
+/* Read GCR registers */
+static uint64_t gcr_read(void *opaque, hwaddr addr, unsigned size)
+{
+ MIPSGCRState *gcr = (MIPSGCRState *) opaque;
+
+ switch (addr) {
+ /* Global Control Block Register */
+ case GCR_CONFIG_OFS:
+ /* Set PCORES to 0 */
+ return 0;
+ case GCR_BASE_OFS:
+ return gcr->gcr_base;
+ case GCR_REV_OFS:
+ return gcr->gcr_rev;
+ case GCR_CPC_BASE_OFS:
+ return gcr->cpc_base;
+ case GCR_CPC_STATUS_OFS:
+ return is_cpc_connected(gcr);
+ case GCR_L2_CONFIG_OFS:
+ /* L2 BYPASS */
+ return GCR_L2_CONFIG_BYPASS_MSK;
+ /* Core-Local and Core-Other Control Blocks */
+ case MIPS_CLCB_OFS + GCR_CL_CONFIG_OFS:
+ 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_OTHER_OFS:
+ return 0;
+ default:
+ qemu_log_mask(LOG_UNIMP, "Read %d bytes at GCR offset 0x%" HWADDR_PRIx
+ "\n", size, addr);
+ return 0;
+ }
+ return 0;
+}
+
+/* Write GCR registers */
+static void gcr_write(void *opaque, hwaddr addr, uint64_t data, unsigned size)
+{
+ MIPSGCRState *gcr = (MIPSGCRState *)opaque;
+
+ switch (addr) {
+ case GCR_CPC_BASE_OFS:
+ update_cpc_base(gcr, data);
+ break;
+ default:
+ qemu_log_mask(LOG_UNIMP, "Write %d bytes at GCR offset 0x%" HWADDR_PRIx
+ " 0x%" PRIx64 "\n", size, addr, data);
+ break;
+ }
+}
+
+static const MemoryRegionOps gcr_ops = {
+ .read = gcr_read,
+ .write = gcr_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .impl = {
+ .max_access_size = 8,
+ },
+};
+
+static void mips_gcr_init(Object *obj)
+{
+ SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+ MIPSGCRState *s = MIPS_GCR(obj);
+
+ object_property_add_link(obj, "cpc", TYPE_MEMORY_REGION,
+ (Object **)&s->cpc_mr,
+ qdev_prop_allow_set_link_before_realize,
+ OBJ_PROP_LINK_UNREF_ON_RELEASE,
+ &error_abort);
+
+ memory_region_init_io(&s->iomem, OBJECT(s), &gcr_ops, s,
+ "mips-gcr", GCR_ADDRSPACE_SZ);
+ sysbus_init_mmio(sbd, &s->iomem);
+}
+
+static void mips_gcr_reset(DeviceState *dev)
+{
+ MIPSGCRState *s = MIPS_GCR(dev);
+
+ update_cpc_base(s, 0);
+}
+
+static const VMStateDescription vmstate_mips_gcr = {
+ .name = "mips-gcr",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT64(cpc_base, MIPSGCRState),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static Property mips_gcr_properties[] = {
+ DEFINE_PROP_INT32("num-vp", MIPSGCRState, num_vps, 1),
+ DEFINE_PROP_INT32("gcr-rev", MIPSGCRState, gcr_rev, 0x800),
+ DEFINE_PROP_UINT64("gcr-base", MIPSGCRState, gcr_base, GCR_BASE_ADDR),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+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;
+}
+
+static const TypeInfo mips_gcr_info = {
+ .name = TYPE_MIPS_GCR,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(MIPSGCRState),
+ .instance_init = mips_gcr_init,
+ .class_init = mips_gcr_class_init,
+};
+
+static void mips_gcr_register_types(void)
+{
+ type_register_static(&mips_gcr_info);
+}
+
+type_init(mips_gcr_register_types)