[PATCH 332/459] drm/amd/display: Add DCN2 VMID

[Alex Deucher]

From: Harry Wentland <harry.wentland at amd.com>

Add support to program DCN2 VMID (Virtual Memory Support)

Signed-off-by: Harry Wentland <harry.wentland at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 .../gpu/drm/amd/display/dc/dcn20/dcn20_vmid.c | 62 +++++++++++++
 .../gpu/drm/amd/display/dc/dcn20/dcn20_vmid.h | 91 +++++++++++++++++++
 2 files changed, 153 insertions(+)
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_vmid.c
 create mode 100644 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_vmid.h

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_vmid.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_vmid.c
new file mode 100644
index 000000000000..50953c0bd4e3
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_vmid.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2018 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#include "dcn20_vmid.h"
+#include "reg_helper.h"
+
+#define REG(reg)\
+	vmid->regs->reg
+
+#define CTX \
+	vmid->ctx
+
+#undef FN
+#define FN(reg_name, field_name) \
+	vmid->shifts->field_name, vmid->masks->field_name
+
+void dcn20_vmid_setup(struct dcn20_vmid *vmid, const struct dcn_vmid_page_table_config *config)
+{
+	REG_SET(PAGE_TABLE_START_ADDR_HI32, 0,
+			VM_CONTEXT0_START_LOGICAL_PAGE_NUMBER_HI4, (config->page_table_start_addr >> 32) & 0xF);
+	REG_SET(PAGE_TABLE_START_ADDR_LO32, 0,
+			VM_CONTEXT0_START_LOGICAL_PAGE_NUMBER_LO32, config->page_table_start_addr & 0xFFFFFFFF);
+
+	REG_SET(PAGE_TABLE_END_ADDR_HI32, 0,
+			VM_CONTEXT0_END_LOGICAL_PAGE_NUMBER_HI4, (config->page_table_end_addr >> 32) & 0xF);
+	REG_SET(PAGE_TABLE_END_ADDR_LO32, 0,
+			VM_CONTEXT0_END_LOGICAL_PAGE_NUMBER_LO32, config->page_table_end_addr & 0xFFFFFFFF);
+
+	REG_SET_2(CNTL, 0,
+			VM_CONTEXT0_PAGE_TABLE_DEPTH, config->depth,
+			VM_CONTEXT0_PAGE_TABLE_BLOCK_SIZE, config->block_size);
+}
+
+void dcn20_vmid_set_ptb(struct dcn20_vmid *vmid, uint64_t base)
+{
+	REG_SET(PAGE_TABLE_BASE_ADDR_HI32, 0,
+			VM_CONTEXT0_PAGE_DIRECTORY_ENTRY_HI32, (base >> 32) & 0xFFFFFFFF);
+	REG_SET(PAGE_TABLE_BASE_ADDR_LO32, 0,
+			VM_CONTEXT0_PAGE_DIRECTORY_ENTRY_LO32, base & 0xFFFFFFFF);
+}
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_vmid.h b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_vmid.h
new file mode 100644
index 000000000000..9c2f7016af2a
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_vmid.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2018 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef DAL_DC_DCN20_DCN20_VMID_H_
+#define DAL_DC_DCN20_DCN20_VMID_H_
+
+#include "vmid.h"
+
+#define BASE_INNER(seg) \
+	DCE_BASE__INST0_SEG ## seg
+
+#define BASE(seg) \
+	BASE_INNER(seg)
+
+#define SRI(reg_name, block, id)\
+	.reg_name = BASE(mm ## block ## id ## _ ## reg_name ## _BASE_IDX) + \
+					mm ## block ## id ## _ ## reg_name
+
+#define SF(reg_name, field_name, post_fix)\
+	.field_name = reg_name ## __ ## field_name ## post_fix
+
+#define DCN20_VMID_REG_LIST(id)\
+	SRI(CNTL, DCN_VM_CONTEXT, id),\
+	SRI(PAGE_TABLE_BASE_ADDR_HI32, DCN_VM_CONTEXT, id),\
+	SRI(PAGE_TABLE_BASE_ADDR_LO32, DCN_VM_CONTEXT, id),\
+	SRI(PAGE_TABLE_START_ADDR_HI32, DCN_VM_CONTEXT, id),\
+	SRI(PAGE_TABLE_START_ADDR_LO32, DCN_VM_CONTEXT, id),\
+	SRI(PAGE_TABLE_END_ADDR_HI32, DCN_VM_CONTEXT, id),\
+	SRI(PAGE_TABLE_END_ADDR_LO32, DCN_VM_CONTEXT, id)
+
+#define DCN20_VMID_MASK_SH_LIST(mask_sh)\
+	SF(DCN_VM_CONTEXT0_CNTL, VM_CONTEXT0_PAGE_TABLE_DEPTH, mask_sh),\
+	SF(DCN_VM_CONTEXT0_CNTL, VM_CONTEXT0_PAGE_TABLE_BLOCK_SIZE, mask_sh),\
+	SF(DCN_VM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32, VM_CONTEXT0_PAGE_DIRECTORY_ENTRY_HI32, mask_sh),\
+	SF(DCN_VM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32, VM_CONTEXT0_PAGE_DIRECTORY_ENTRY_LO32, mask_sh),\
+	SF(DCN_VM_CONTEXT0_PAGE_TABLE_START_ADDR_HI32, VM_CONTEXT0_START_LOGICAL_PAGE_NUMBER_HI4, mask_sh),\
+	SF(DCN_VM_CONTEXT0_PAGE_TABLE_START_ADDR_LO32, VM_CONTEXT0_START_LOGICAL_PAGE_NUMBER_LO32, mask_sh),\
+	SF(DCN_VM_CONTEXT0_PAGE_TABLE_END_ADDR_HI32, VM_CONTEXT0_END_LOGICAL_PAGE_NUMBER_HI4, mask_sh),\
+	SF(DCN_VM_CONTEXT0_PAGE_TABLE_END_ADDR_LO32, VM_CONTEXT0_END_LOGICAL_PAGE_NUMBER_LO32, mask_sh)
+
+#define DCN20_VMID_REG_FIELD_LIST(type)\
+	type VM_CONTEXT0_PAGE_TABLE_DEPTH;\
+	type VM_CONTEXT0_PAGE_TABLE_BLOCK_SIZE;\
+	type VM_CONTEXT0_PAGE_DIRECTORY_ENTRY_HI32;\
+	type VM_CONTEXT0_PAGE_DIRECTORY_ENTRY_LO32;\
+	type VM_CONTEXT0_START_LOGICAL_PAGE_NUMBER_HI4;\
+	type VM_CONTEXT0_START_LOGICAL_PAGE_NUMBER_LO32;\
+	type VM_CONTEXT0_END_LOGICAL_PAGE_NUMBER_HI4;\
+	type VM_CONTEXT0_END_LOGICAL_PAGE_NUMBER_LO32
+
+struct dcn20_vmid_shift {
+	DCN20_VMID_REG_FIELD_LIST(uint8_t);
+};
+
+struct dcn20_vmid_mask {
+	DCN20_VMID_REG_FIELD_LIST(uint32_t);
+};
+
+struct dcn20_vmid {
+	struct dc_context *ctx;
+	const struct dcn_vmid_registers *regs;
+	const struct dcn20_vmid_shift *shifts;
+	const struct dcn20_vmid_mask *masks;
+};
+
+void dcn20_vmid_setup(struct dcn20_vmid *vmid, const struct dcn_vmid_page_table_config *config);
+void dcn20_vmid_set_ptb(struct dcn20_vmid *vmid, uint64_t base);
+
+#endif /* DAL_DC_DCN20_DCN20_VMID_H_ */
-- 
2.20.1