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-rw-r--r--hw/misc/Makefile.objs2
-rw-r--r--hw/misc/grlib_ahb_apb_pnp.c269
2 files changed, 271 insertions, 0 deletions
diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs
index c71e07ae35..77b9df9796 100644
--- a/hw/misc/Makefile.objs
+++ b/hw/misc/Makefile.objs
@@ -77,3 +77,5 @@ obj-$(CONFIG_AUX) += auxbus.o
obj-$(CONFIG_ASPEED_SOC) += aspeed_scu.o aspeed_sdmc.o
obj-$(CONFIG_MSF2) += msf2-sysreg.o
obj-$(CONFIG_NRF51_SOC) += nrf51_rng.o
+
+obj-$(CONFIG_GRLIB) += grlib_ahb_apb_pnp.o
diff --git a/hw/misc/grlib_ahb_apb_pnp.c b/hw/misc/grlib_ahb_apb_pnp.c
new file mode 100644
index 0000000000..7338461694
--- /dev/null
+++ b/hw/misc/grlib_ahb_apb_pnp.c
@@ -0,0 +1,269 @@
+/*
+ * GRLIB AHB APB PNP
+ *
+ * Copyright (C) 2019 AdaCore
+ *
+ * Developed by :
+ * Frederic Konrad <frederic.konrad@adacore.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "hw/sysbus.h"
+#include "hw/misc/grlib_ahb_apb_pnp.h"
+
+#define GRLIB_PNP_VENDOR_SHIFT (24)
+#define GRLIB_PNP_VENDOR_SIZE (8)
+#define GRLIB_PNP_DEV_SHIFT (12)
+#define GRLIB_PNP_DEV_SIZE (12)
+#define GRLIB_PNP_VER_SHIFT (5)
+#define GRLIB_PNP_VER_SIZE (5)
+#define GRLIB_PNP_IRQ_SHIFT (0)
+#define GRLIB_PNP_IRQ_SIZE (5)
+#define GRLIB_PNP_ADDR_SHIFT (20)
+#define GRLIB_PNP_ADDR_SIZE (12)
+#define GRLIB_PNP_MASK_SHIFT (4)
+#define GRLIB_PNP_MASK_SIZE (12)
+
+#define GRLIB_AHB_DEV_ADDR_SHIFT (20)
+#define GRLIB_AHB_DEV_ADDR_SIZE (12)
+#define GRLIB_AHB_ENTRY_SIZE (0x20)
+#define GRLIB_AHB_MAX_DEV (64)
+#define GRLIB_AHB_SLAVE_OFFSET (0x800)
+
+#define GRLIB_APB_DEV_ADDR_SHIFT (8)
+#define GRLIB_APB_DEV_ADDR_SIZE (12)
+#define GRLIB_APB_ENTRY_SIZE (0x08)
+#define GRLIB_APB_MAX_DEV (512)
+
+#define GRLIB_PNP_MAX_REGS (0x1000)
+
+typedef struct AHBPnp {
+ SysBusDevice parent_obj;
+ MemoryRegion iomem;
+
+ uint32_t regs[GRLIB_PNP_MAX_REGS >> 2];
+ uint8_t master_count;
+ uint8_t slave_count;
+} AHBPnp;
+
+void grlib_ahb_pnp_add_entry(AHBPnp *dev, uint32_t address, uint32_t mask,
+ uint8_t vendor, uint16_t device, int slave,
+ int type)
+{
+ unsigned int reg_start;
+
+ /*
+ * AHB entries look like this:
+ *
+ * 31 -------- 23 -------- 11 ----- 9 -------- 4 --- 0
+ * | VENDOR ID | DEVICE ID | IRQ ? | VERSION | IRQ |
+ * --------------------------------------------------
+ * | USER |
+ * --------------------------------------------------
+ * | USER |
+ * --------------------------------------------------
+ * | USER |
+ * --------------------------------------------------
+ * | USER |
+ * --------------------------------------------------
+ * 31 ----------- 20 --- 15 ----------------- 3 ---- 0
+ * | ADDR[31..12] | 00PC | MASK | TYPE |
+ * --------------------------------------------------
+ * 31 ----------- 20 --- 15 ----------------- 3 ---- 0
+ * | ADDR[31..12] | 00PC | MASK | TYPE |
+ * --------------------------------------------------
+ * 31 ----------- 20 --- 15 ----------------- 3 ---- 0
+ * | ADDR[31..12] | 00PC | MASK | TYPE |
+ * --------------------------------------------------
+ * 31 ----------- 20 --- 15 ----------------- 3 ---- 0
+ * | ADDR[31..12] | 00PC | MASK | TYPE |
+ * --------------------------------------------------
+ */
+
+ if (slave) {
+ assert(dev->slave_count < GRLIB_AHB_MAX_DEV);
+ reg_start = (GRLIB_AHB_SLAVE_OFFSET
+ + (dev->slave_count * GRLIB_AHB_ENTRY_SIZE)) >> 2;
+ dev->slave_count++;
+ } else {
+ assert(dev->master_count < GRLIB_AHB_MAX_DEV);
+ reg_start = (dev->master_count * GRLIB_AHB_ENTRY_SIZE) >> 2;
+ dev->master_count++;
+ }
+
+ dev->regs[reg_start] = deposit32(dev->regs[reg_start],
+ GRLIB_PNP_VENDOR_SHIFT,
+ GRLIB_PNP_VENDOR_SIZE,
+ vendor);
+ dev->regs[reg_start] = deposit32(dev->regs[reg_start],
+ GRLIB_PNP_DEV_SHIFT,
+ GRLIB_PNP_DEV_SIZE,
+ device);
+ reg_start += 4;
+ /* AHB Memory Space */
+ dev->regs[reg_start] = type;
+ dev->regs[reg_start] = deposit32(dev->regs[reg_start],
+ GRLIB_PNP_ADDR_SHIFT,
+ GRLIB_PNP_ADDR_SIZE,
+ extract32(address,
+ GRLIB_AHB_DEV_ADDR_SHIFT,
+ GRLIB_AHB_DEV_ADDR_SIZE));
+ dev->regs[reg_start] = deposit32(dev->regs[reg_start],
+ GRLIB_PNP_MASK_SHIFT,
+ GRLIB_PNP_MASK_SIZE,
+ mask);
+}
+
+static uint64_t grlib_ahb_pnp_read(void *opaque, hwaddr offset, unsigned size)
+{
+ AHBPnp *ahb_pnp = GRLIB_AHB_PNP(opaque);
+
+ return ahb_pnp->regs[offset >> 2];
+}
+
+static const MemoryRegionOps grlib_ahb_pnp_ops = {
+ .read = grlib_ahb_pnp_read,
+ .endianness = DEVICE_BIG_ENDIAN,
+};
+
+static void grlib_ahb_pnp_realize(DeviceState *dev, Error **errp)
+{
+ AHBPnp *ahb_pnp = GRLIB_AHB_PNP(dev);
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+
+ memory_region_init_io(&ahb_pnp->iomem, OBJECT(dev), &grlib_ahb_pnp_ops,
+ ahb_pnp, TYPE_GRLIB_AHB_PNP, GRLIB_PNP_MAX_REGS);
+ sysbus_init_mmio(sbd, &ahb_pnp->iomem);
+}
+
+static void grlib_ahb_pnp_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->realize = grlib_ahb_pnp_realize;
+}
+
+static const TypeInfo grlib_ahb_pnp_info = {
+ .name = TYPE_GRLIB_AHB_PNP,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(AHBPnp),
+ .class_init = grlib_ahb_pnp_class_init,
+};
+
+/* APBPnp */
+
+typedef struct APBPnp {
+ SysBusDevice parent_obj;
+ MemoryRegion iomem;
+
+ uint32_t regs[GRLIB_PNP_MAX_REGS >> 2];
+ uint32_t entry_count;
+} APBPnp;
+
+void grlib_apb_pnp_add_entry(APBPnp *dev, uint32_t address, uint32_t mask,
+ uint8_t vendor, uint16_t device, uint8_t version,
+ uint8_t irq, int type)
+{
+ unsigned int reg_start;
+
+ /*
+ * APB entries look like this:
+ *
+ * 31 -------- 23 -------- 11 ----- 9 ------- 4 --- 0
+ * | VENDOR ID | DEVICE ID | IRQ ? | VERSION | IRQ |
+ *
+ * 31 ---------- 20 --- 15 ----------------- 3 ---- 0
+ * | ADDR[20..8] | 0000 | MASK | TYPE |
+ */
+
+ assert(dev->entry_count < GRLIB_APB_MAX_DEV);
+ reg_start = (dev->entry_count * GRLIB_APB_ENTRY_SIZE) >> 2;
+ dev->entry_count++;
+
+ dev->regs[reg_start] = deposit32(dev->regs[reg_start],
+ GRLIB_PNP_VENDOR_SHIFT,
+ GRLIB_PNP_VENDOR_SIZE,
+ vendor);
+ dev->regs[reg_start] = deposit32(dev->regs[reg_start],
+ GRLIB_PNP_DEV_SHIFT,
+ GRLIB_PNP_DEV_SIZE,
+ device);
+ dev->regs[reg_start] = deposit32(dev->regs[reg_start],
+ GRLIB_PNP_VER_SHIFT,
+ GRLIB_PNP_VER_SIZE,
+ version);
+ dev->regs[reg_start] = deposit32(dev->regs[reg_start],
+ GRLIB_PNP_IRQ_SHIFT,
+ GRLIB_PNP_IRQ_SIZE,
+ irq);
+ reg_start += 1;
+ dev->regs[reg_start] = type;
+ dev->regs[reg_start] = deposit32(dev->regs[reg_start],
+ GRLIB_PNP_ADDR_SHIFT,
+ GRLIB_PNP_ADDR_SIZE,
+ extract32(address,
+ GRLIB_APB_DEV_ADDR_SHIFT,
+ GRLIB_APB_DEV_ADDR_SIZE));
+ dev->regs[reg_start] = deposit32(dev->regs[reg_start],
+ GRLIB_PNP_MASK_SHIFT,
+ GRLIB_PNP_MASK_SIZE,
+ mask);
+}
+
+static uint64_t grlib_apb_pnp_read(void *opaque, hwaddr offset, unsigned size)
+{
+ APBPnp *apb_pnp = GRLIB_APB_PNP(opaque);
+
+ return apb_pnp->regs[offset >> 2];
+}
+
+static const MemoryRegionOps grlib_apb_pnp_ops = {
+ .read = grlib_apb_pnp_read,
+ .endianness = DEVICE_BIG_ENDIAN,
+};
+
+static void grlib_apb_pnp_realize(DeviceState *dev, Error **errp)
+{
+ APBPnp *apb_pnp = GRLIB_APB_PNP(dev);
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+
+ memory_region_init_io(&apb_pnp->iomem, OBJECT(dev), &grlib_apb_pnp_ops,
+ apb_pnp, TYPE_GRLIB_APB_PNP, GRLIB_PNP_MAX_REGS);
+ sysbus_init_mmio(sbd, &apb_pnp->iomem);
+}
+
+static void grlib_apb_pnp_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->realize = grlib_apb_pnp_realize;
+}
+
+static const TypeInfo grlib_apb_pnp_info = {
+ .name = TYPE_GRLIB_APB_PNP,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(APBPnp),
+ .class_init = grlib_apb_pnp_class_init,
+};
+
+static void grlib_ahb_apb_pnp_register_types(void)
+{
+ type_register_static(&grlib_ahb_pnp_info);
+ type_register_static(&grlib_apb_pnp_info);
+}
+
+type_init(grlib_ahb_apb_pnp_register_types)
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-25 03:21:51 +0000