1 files changed, 114 insertions, 0 deletions
diff --git a/drivers/arm/gic/v3/gic600_multichip_private.h b/drivers/arm/gic/v3/gic600_multichip_private.h
new file mode 100644
index 0000000..414bd5b
--- /dev/null
+++ b/drivers/arm/gic/v3/gic600_multichip_private.h
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2019-2022, ARM Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef GIC600_MULTICHIP_PRIVATE_H
+#define GIC600_MULTICHIP_PRIVATE_H
+
+#include <drivers/arm/gic600_multichip.h>
+
+#include "gicv3_private.h"
+
+/* GIC600 GICD multichip related offsets */
+#define GICD_CHIPSR			U(0xC000)
+#define GICD_DCHIPR			U(0xC004)
+#define GICD_CHIPR			U(0xC008)
+
+/* GIC600 GICD multichip related masks */
+#define GICD_CHIPRx_PUP_BIT		BIT_64(1)
+#define GICD_CHIPRx_SOCKET_STATE	BIT_64(0)
+#define GICD_DCHIPR_PUP_BIT		BIT_32(0)
+#define GICD_CHIPSR_RTS_MASK		(BIT_32(4) | BIT_32(5))
+
+/* GIC600 GICD multichip related shifts */
+#define GICD_CHIPRx_ADDR_SHIFT		16
+#define GICD_CHIPSR_RTS_SHIFT		4
+#define GICD_DCHIPR_RT_OWNER_SHIFT	4
+
+/* Other shifts and masks remain the same between GIC-600 and GIC-700. */
+#define GIC_700_SPI_BLOCK_MIN_SHIFT	9
+#define GIC_700_SPI_BLOCKS_SHIFT	3
+#define GIC_600_SPI_BLOCK_MIN_SHIFT	10
+#define GIC_600_SPI_BLOCKS_SHIFT	5
+
+#define GICD_CHIPSR_RTS_STATE_DISCONNECTED	U(0)
+#define GICD_CHIPSR_RTS_STATE_UPDATING		U(1)
+#define GICD_CHIPSR_RTS_STATE_CONSISTENT	U(2)
+
+/* SPI interrupt id minimum and maximum range */
+#define GIC600_SPI_ID_MIN		32
+#define GIC600_SPI_ID_MAX		960
+
+#define GIC700_SPI_ID_MIN		32
+#define GIC700_SPI_ID_MAX		991
+#define GIC700_ESPI_ID_MIN		4096
+#define GIC700_ESPI_ID_MAX		5119
+
+/* Number of retries for PUP update */
+#define GICD_PUP_UPDATE_RETRIES		10000
+
+#define SPI_MIN_INDEX			0
+#define SPI_MAX_INDEX			1
+
+#define SPI_BLOCK_MIN_VALUE(spi_id_min) \
+			(((spi_id_min) - GIC600_SPI_ID_MIN) / \
+			GIC600_SPI_ID_MIN)
+#define SPI_BLOCKS_VALUE(spi_id_min, spi_id_max) \
+			(((spi_id_max) - (spi_id_min) + 1) / \
+			GIC600_SPI_ID_MIN)
+#define ESPI_BLOCK_MIN_VALUE(spi_id_min) \
+			(((spi_id_min) - GIC700_ESPI_ID_MIN + 1) / \
+			GIC700_SPI_ID_MIN)
+#define GICD_CHIPR_VALUE_GIC_700(chip_addr, spi_block_min, spi_blocks) \
+			(((chip_addr) << GICD_CHIPRx_ADDR_SHIFT) | \
+			((spi_block_min) << GIC_700_SPI_BLOCK_MIN_SHIFT) | \
+			((spi_blocks) << GIC_700_SPI_BLOCKS_SHIFT))
+#define GICD_CHIPR_VALUE_GIC_600(chip_addr, spi_block_min, spi_blocks) \
+			(((chip_addr) << GICD_CHIPRx_ADDR_SHIFT) | \
+			((spi_block_min) << GIC_600_SPI_BLOCK_MIN_SHIFT) | \
+			((spi_blocks) << GIC_600_SPI_BLOCKS_SHIFT))
+
+/*
+ * Multichip data assertion macros
+ */
+/* Set bits from 0 to ((spi_id_max + 1) / 32) */
+#define SPI_BLOCKS_TILL_MAX(spi_id_max) \
+			((1ULL << (((spi_id_max) + 1) >> 5)) - 1)
+/* Set bits from 0 to (spi_id_min / 32) */
+#define SPI_BLOCKS_TILL_MIN(spi_id_min)	((1 << ((spi_id_min) >> 5)) - 1)
+/* Set bits from (spi_id_min / 32) to ((spi_id_max + 1) / 32) */
+#define BLOCKS_OF_32(spi_id_min, spi_id_max) \
+					SPI_BLOCKS_TILL_MAX(spi_id_max) ^ \
+					SPI_BLOCKS_TILL_MIN(spi_id_min)
+
+/*******************************************************************************
+ * GIC-600 multichip operation related helper functions
+ ******************************************************************************/
+static inline uint32_t read_gicd_dchipr(uintptr_t base)
+{
+	return mmio_read_32(base + GICD_DCHIPR);
+}
+
+static inline uint64_t read_gicd_chipr_n(uintptr_t base, uint8_t n)
+{
+	return mmio_read_64(base + (GICD_CHIPR + (8U * n)));
+}
+
+static inline uint32_t read_gicd_chipsr(uintptr_t base)
+{
+	return mmio_read_32(base + GICD_CHIPSR);
+}
+
+static inline void write_gicd_dchipr(uintptr_t base, uint32_t val)
+{
+	mmio_write_32(base + GICD_DCHIPR, val);
+}
+
+static inline void write_gicd_chipr_n(uintptr_t base, uint8_t n, uint64_t val)
+{
+	mmio_write_64(base + (GICD_CHIPR + (8U * n)), val);
+}
+
+#endif /* GIC600_MULTICHIP_PRIVATE_H */