1 files changed, 107 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_mmio.h b/drivers/gpu/drm/xe/xe_mmio.h
new file mode 100644
index 000000000000..98de5c13c89b
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_mmio.h
@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021-2023 Intel Corporation
+ */
+
+#ifndef _XE_MMIO_H_
+#define _XE_MMIO_H_
+
+#include <linux/delay.h>
+#include <linux/io-64-nonatomic-lo-hi.h>
+
+#include "regs/xe_reg_defs.h"
+#include "xe_device_types.h"
+#include "xe_gt_printk.h"
+#include "xe_gt_types.h"
+
+struct drm_device;
+struct drm_file;
+struct xe_device;
+
+#define LMEM_BAR		2
+
+int xe_mmio_init(struct xe_device *xe);
+int xe_mmio_root_tile_init(struct xe_device *xe);
+void xe_mmio_probe_tiles(struct xe_device *xe);
+
+static inline u8 xe_mmio_read8(struct xe_gt *gt, struct xe_reg reg)
+{
+	struct xe_tile *tile = gt_to_tile(gt);
+
+	if (reg.addr < gt->mmio.adj_limit)
+		reg.addr += gt->mmio.adj_offset;
+
+	return readb((reg.ext ? tile->mmio_ext.regs : tile->mmio.regs) + reg.addr);
+}
+
+static inline u16 xe_mmio_read16(struct xe_gt *gt, struct xe_reg reg)
+{
+	struct xe_tile *tile = gt_to_tile(gt);
+
+	if (reg.addr < gt->mmio.adj_limit)
+		reg.addr += gt->mmio.adj_offset;
+
+	return readw((reg.ext ? tile->mmio_ext.regs : tile->mmio.regs) + reg.addr);
+}
+
+static inline void xe_mmio_write32(struct xe_gt *gt,
+				   struct xe_reg reg, u32 val)
+{
+	struct xe_tile *tile = gt_to_tile(gt);
+
+	if (reg.addr < gt->mmio.adj_limit)
+		reg.addr += gt->mmio.adj_offset;
+
+	writel(val, (reg.ext ? tile->mmio_ext.regs : tile->mmio.regs) + reg.addr);
+}
+
+static inline u32 xe_mmio_read32(struct xe_gt *gt, struct xe_reg reg)
+{
+	struct xe_tile *tile = gt_to_tile(gt);
+
+	if (reg.addr < gt->mmio.adj_limit)
+		reg.addr += gt->mmio.adj_offset;
+
+	return readl((reg.ext ? tile->mmio_ext.regs : tile->mmio.regs) + reg.addr);
+}
+
+static inline u32 xe_mmio_rmw32(struct xe_gt *gt, struct xe_reg reg, u32 clr,
+				u32 set)
+{
+	u32 old, reg_val;
+
+	old = xe_mmio_read32(gt, reg);
+	reg_val = (old & ~clr) | set;
+	xe_mmio_write32(gt, reg, reg_val);
+
+	return old;
+}
+
+static inline int xe_mmio_write32_and_verify(struct xe_gt *gt,
+					     struct xe_reg reg, u32 val,
+					     u32 mask, u32 eval)
+{
+	u32 reg_val;
+
+	xe_mmio_write32(gt, reg, val);
+	reg_val = xe_mmio_read32(gt, reg);
+
+	return (reg_val & mask) != eval ? -EINVAL : 0;
+}
+
+static inline bool xe_mmio_in_range(const struct xe_gt *gt,
+				    const struct xe_mmio_range *range,
+				    struct xe_reg reg)
+{
+	if (reg.addr < gt->mmio.adj_limit)
+		reg.addr += gt->mmio.adj_offset;
+
+	return range && reg.addr >= range->start && reg.addr <= range->end;
+}
+
+int xe_mmio_probe_vram(struct xe_device *xe);
+u64 xe_mmio_read64_2x32(struct xe_gt *gt, struct xe_reg reg);
+int xe_mmio_wait32(struct xe_gt *gt, struct xe_reg reg, u32 mask, u32 val, u32 timeout_us,
+		   u32 *out_val, bool atomic);
+
+#endif