drm/panthor: Add GPU register definitions

Those are the registers directly accessible through the MMIO range.

FW registers are exposed in panthor_fw.h.

v6:
- Add Maxime's and Heiko's acks

v4:
- Add the CORE_FEATURES register (needed for GPU variants)
- Add Steve's R-b

v3:
- Add macros to extract GPU ID info
- Formatting changes
- Remove AS_TRANSCFG_ADRMODE_LEGACY - it doesn't exist post-CSF
- Remove CSF_GPU_LATEST_FLUSH_ID_DEFAULT
- Add GPU_L2_FEATURES_LINE_SIZE for extracting the GPU cache line size
Co-developed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-by: Steven Price <steven.price@arm.com> # MIT+GPL2 relicensing,Arm
Acked-by: Grant Likely <grant.likely@linaro.org> # MIT+GPL2 relicensing,Linaro
Acked-by: Boris Brezillon <boris.brezillon@collabora.com> # MIT+GPL2 relicensing,Collabora
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240229162230.2634044-3-boris.brezillon@collabora.com

drivers/gpu/drm/panthor/panthor_regs.h

+/* SPDX-License-Identifier: GPL-2.0 or MIT */
+/* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */
+/* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */
+/* Copyright 2023 Collabora ltd. */
+/*
+ * Register definitions based on mali_kbase_gpu_regmap.h and
+ * mali_kbase_gpu_regmap_csf.h
+ * (C) COPYRIGHT 2010-2022 ARM Limited. All rights reserved.
+ */
+#ifndef __PANTHOR_REGS_H__
+#define __PANTHOR_REGS_H__
+
+#define GPU_ID						0x0
+#define   GPU_ARCH_MAJOR(x)				((x) >> 28)
+#define   GPU_ARCH_MINOR(x)				(((x) & GENMASK(27, 24)) >> 24)
+#define   GPU_ARCH_REV(x)				(((x) & GENMASK(23, 20)) >> 20)
+#define   GPU_PROD_MAJOR(x)				(((x) & GENMASK(19, 16)) >> 16)
+#define   GPU_VER_MAJOR(x)				(((x) & GENMASK(15, 12)) >> 12)
+#define   GPU_VER_MINOR(x)				(((x) & GENMASK(11, 4)) >> 4)
+#define   GPU_VER_STATUS(x)				((x) & GENMASK(3, 0))
+
+#define GPU_L2_FEATURES					0x4
+#define  GPU_L2_FEATURES_LINE_SIZE(x)			(1 << ((x) & GENMASK(7, 0)))
+
+#define GPU_CORE_FEATURES				0x8
+
+#define GPU_TILER_FEATURES				0xC
+#define GPU_MEM_FEATURES				0x10
+#define   GROUPS_L2_COHERENT				BIT(0)
+
+#define GPU_MMU_FEATURES				0x14
+#define  GPU_MMU_FEATURES_VA_BITS(x)			((x) & GENMASK(7, 0))
+#define  GPU_MMU_FEATURES_PA_BITS(x)			(((x) >> 8) & GENMASK(7, 0))
+#define GPU_AS_PRESENT					0x18
+#define GPU_CSF_ID					0x1C
+
+#define GPU_INT_RAWSTAT					0x20
+#define GPU_INT_CLEAR					0x24
+#define GPU_INT_MASK					0x28
+#define GPU_INT_STAT					0x2c
+#define   GPU_IRQ_FAULT					BIT(0)
+#define   GPU_IRQ_PROTM_FAULT				BIT(1)
+#define   GPU_IRQ_RESET_COMPLETED			BIT(8)
+#define   GPU_IRQ_POWER_CHANGED				BIT(9)
+#define   GPU_IRQ_POWER_CHANGED_ALL			BIT(10)
+#define   GPU_IRQ_CLEAN_CACHES_COMPLETED		BIT(17)
+#define   GPU_IRQ_DOORBELL_MIRROR			BIT(18)
+#define   GPU_IRQ_MCU_STATUS_CHANGED			BIT(19)
+#define GPU_CMD						0x30
+#define   GPU_CMD_DEF(type, payload)			((type) | ((payload) << 8))
+#define   GPU_SOFT_RESET				GPU_CMD_DEF(1, 1)
+#define   GPU_HARD_RESET				GPU_CMD_DEF(1, 2)
+#define   CACHE_CLEAN					BIT(0)
+#define   CACHE_INV					BIT(1)
+#define   GPU_FLUSH_CACHES(l2, lsc, oth)		\
+	  GPU_CMD_DEF(4, ((l2) << 0) | ((lsc) << 4) | ((oth) << 8))
+
+#define GPU_STATUS					0x34
+#define   GPU_STATUS_ACTIVE				BIT(0)
+#define   GPU_STATUS_PWR_ACTIVE				BIT(1)
+#define   GPU_STATUS_PAGE_FAULT				BIT(4)
+#define   GPU_STATUS_PROTM_ACTIVE			BIT(7)
+#define   GPU_STATUS_DBG_ENABLED			BIT(8)
+
+#define GPU_FAULT_STATUS				0x3C
+#define GPU_FAULT_ADDR_LO				0x40
+#define GPU_FAULT_ADDR_HI				0x44
+
+#define GPU_PWR_KEY					0x50
+#define  GPU_PWR_KEY_UNLOCK				0x2968A819
+#define GPU_PWR_OVERRIDE0				0x54
+#define GPU_PWR_OVERRIDE1				0x58
+
+#define GPU_TIMESTAMP_OFFSET_LO				0x88
+#define GPU_TIMESTAMP_OFFSET_HI				0x8C
+#define GPU_CYCLE_COUNT_LO				0x90
+#define GPU_CYCLE_COUNT_HI				0x94
+#define GPU_TIMESTAMP_LO				0x98
+#define GPU_TIMESTAMP_HI				0x9C
+
+#define GPU_THREAD_MAX_THREADS				0xA0
+#define GPU_THREAD_MAX_WORKGROUP_SIZE			0xA4
+#define GPU_THREAD_MAX_BARRIER_SIZE			0xA8
+#define GPU_THREAD_FEATURES				0xAC
+
+#define GPU_TEXTURE_FEATURES(n)				(0xB0 + ((n) * 4))
+
+#define GPU_SHADER_PRESENT_LO				0x100
+#define GPU_SHADER_PRESENT_HI				0x104
+#define GPU_TILER_PRESENT_LO				0x110
+#define GPU_TILER_PRESENT_HI				0x114
+#define GPU_L2_PRESENT_LO				0x120
+#define GPU_L2_PRESENT_HI				0x124
+
+#define SHADER_READY_LO					0x140
+#define SHADER_READY_HI					0x144
+#define TILER_READY_LO					0x150
+#define TILER_READY_HI					0x154
+#define L2_READY_LO					0x160
+#define L2_READY_HI					0x164
+
+#define SHADER_PWRON_LO					0x180
+#define SHADER_PWRON_HI					0x184
+#define TILER_PWRON_LO					0x190
+#define TILER_PWRON_HI					0x194
+#define L2_PWRON_LO					0x1A0
+#define L2_PWRON_HI					0x1A4
+
+#define SHADER_PWROFF_LO				0x1C0
+#define SHADER_PWROFF_HI				0x1C4
+#define TILER_PWROFF_LO					0x1D0
+#define TILER_PWROFF_HI					0x1D4
+#define L2_PWROFF_LO					0x1E0
+#define L2_PWROFF_HI					0x1E4
+
+#define SHADER_PWRTRANS_LO				0x200
+#define SHADER_PWRTRANS_HI				0x204
+#define TILER_PWRTRANS_LO				0x210
+#define TILER_PWRTRANS_HI				0x214
+#define L2_PWRTRANS_LO					0x220
+#define L2_PWRTRANS_HI					0x224
+
+#define SHADER_PWRACTIVE_LO				0x240
+#define SHADER_PWRACTIVE_HI				0x244
+#define TILER_PWRACTIVE_LO				0x250
+#define TILER_PWRACTIVE_HI				0x254
+#define L2_PWRACTIVE_LO					0x260
+#define L2_PWRACTIVE_HI					0x264
+
+#define GPU_REVID					0x280
+
+#define GPU_COHERENCY_FEATURES				0x300
+#define GPU_COHERENCY_PROT_BIT(name)			BIT(GPU_COHERENCY_  ## name)
+
+#define GPU_COHERENCY_PROTOCOL				0x304
+#define   GPU_COHERENCY_ACE				0
+#define   GPU_COHERENCY_ACE_LITE			1
+#define   GPU_COHERENCY_NONE				31
+
+#define MCU_CONTROL					0x700
+#define MCU_CONTROL_ENABLE				1
+#define MCU_CONTROL_AUTO				2
+#define MCU_CONTROL_DISABLE				0
+
+#define MCU_STATUS					0x704
+#define MCU_STATUS_DISABLED				0
+#define MCU_STATUS_ENABLED				1
+#define MCU_STATUS_HALT					2
+#define MCU_STATUS_FATAL				3
+
+/* Job Control regs */
+#define JOB_INT_RAWSTAT					0x1000
+#define JOB_INT_CLEAR					0x1004
+#define JOB_INT_MASK					0x1008
+#define JOB_INT_STAT					0x100c
+#define   JOB_INT_GLOBAL_IF				BIT(31)
+#define   JOB_INT_CSG_IF(x)				BIT(x)
+
+/* MMU regs */
+#define MMU_INT_RAWSTAT					0x2000
+#define MMU_INT_CLEAR					0x2004
+#define MMU_INT_MASK					0x2008
+#define MMU_INT_STAT					0x200c
+
+/* AS_COMMAND register commands */
+
+#define MMU_BASE					0x2400
+#define MMU_AS_SHIFT					6
+#define MMU_AS(as)					(MMU_BASE + ((as) << MMU_AS_SHIFT))
+
+#define AS_TRANSTAB_LO(as)				(MMU_AS(as) + 0x0)
+#define AS_TRANSTAB_HI(as)				(MMU_AS(as) + 0x4)
+#define AS_MEMATTR_LO(as)				(MMU_AS(as) + 0x8)
+#define AS_MEMATTR_HI(as)				(MMU_AS(as) + 0xC)
+#define   AS_MEMATTR_AARCH64_INNER_ALLOC_IMPL		(2 << 2)
+#define   AS_MEMATTR_AARCH64_INNER_ALLOC_EXPL(w, r)	((3 << 2) | \
+							 ((w) ? BIT(0) : 0) | \
+							 ((r) ? BIT(1) : 0))
+#define   AS_MEMATTR_AARCH64_SH_MIDGARD_INNER		(0 << 4)
+#define   AS_MEMATTR_AARCH64_SH_CPU_INNER		(1 << 4)
+#define   AS_MEMATTR_AARCH64_SH_CPU_INNER_SHADER_COH	(2 << 4)
+#define   AS_MEMATTR_AARCH64_SHARED			(0 << 6)
+#define   AS_MEMATTR_AARCH64_INNER_OUTER_NC		(1 << 6)
+#define   AS_MEMATTR_AARCH64_INNER_OUTER_WB		(2 << 6)
+#define   AS_MEMATTR_AARCH64_FAULT			(3 << 6)
+#define AS_LOCKADDR_LO(as)				(MMU_AS(as) + 0x10)
+#define AS_LOCKADDR_HI(as)				(MMU_AS(as) + 0x14)
+#define AS_COMMAND(as)					(MMU_AS(as) + 0x18)
+#define   AS_COMMAND_NOP				0
+#define   AS_COMMAND_UPDATE				1
+#define   AS_COMMAND_LOCK				2
+#define   AS_COMMAND_UNLOCK				3
+#define   AS_COMMAND_FLUSH_PT				4
+#define   AS_COMMAND_FLUSH_MEM				5
+#define   AS_LOCK_REGION_MIN_SIZE			(1ULL << 15)
+#define AS_FAULTSTATUS(as)				(MMU_AS(as) + 0x1C)
+#define  AS_FAULTSTATUS_ACCESS_TYPE_MASK		(0x3 << 8)
+#define  AS_FAULTSTATUS_ACCESS_TYPE_ATOMIC		(0x0 << 8)
+#define  AS_FAULTSTATUS_ACCESS_TYPE_EX			(0x1 << 8)
+#define  AS_FAULTSTATUS_ACCESS_TYPE_READ		(0x2 << 8)
+#define  AS_FAULTSTATUS_ACCESS_TYPE_WRITE		(0x3 << 8)
+#define AS_FAULTADDRESS_LO(as)				(MMU_AS(as) + 0x20)
+#define AS_FAULTADDRESS_HI(as)				(MMU_AS(as) + 0x24)
+#define AS_STATUS(as)					(MMU_AS(as) + 0x28)
+#define   AS_STATUS_AS_ACTIVE				BIT(0)
+#define AS_TRANSCFG_LO(as)				(MMU_AS(as) + 0x30)
+#define AS_TRANSCFG_HI(as)				(MMU_AS(as) + 0x34)
+#define   AS_TRANSCFG_ADRMODE_UNMAPPED			(1 << 0)
+#define   AS_TRANSCFG_ADRMODE_IDENTITY			(2 << 0)
+#define   AS_TRANSCFG_ADRMODE_AARCH64_4K		(6 << 0)
+#define   AS_TRANSCFG_ADRMODE_AARCH64_64K		(8 << 0)
+#define   AS_TRANSCFG_INA_BITS(x)			((x) << 6)
+#define   AS_TRANSCFG_OUTA_BITS(x)			((x) << 14)
+#define   AS_TRANSCFG_SL_CONCAT				BIT(22)
+#define   AS_TRANSCFG_PTW_MEMATTR_NC			(1 << 24)
+#define   AS_TRANSCFG_PTW_MEMATTR_WB			(2 << 24)
+#define   AS_TRANSCFG_PTW_SH_NS				(0 << 28)
+#define   AS_TRANSCFG_PTW_SH_OS				(2 << 28)
+#define   AS_TRANSCFG_PTW_SH_IS				(3 << 28)
+#define   AS_TRANSCFG_PTW_RA				BIT(30)
+#define   AS_TRANSCFG_DISABLE_HIER_AP			BIT(33)
+#define   AS_TRANSCFG_DISABLE_AF_FAULT			BIT(34)
+#define   AS_TRANSCFG_WXN				BIT(35)
+#define   AS_TRANSCFG_XREADABLE				BIT(36)
+#define AS_FAULTEXTRA_LO(as)				(MMU_AS(as) + 0x38)
+#define AS_FAULTEXTRA_HI(as)				(MMU_AS(as) + 0x3C)
+
+#define CSF_GPU_LATEST_FLUSH_ID				0x10000
+
+#define CSF_DOORBELL(i)					(0x80000 + ((i) * 0x10000))
+#define CSF_GLB_DOORBELL_ID				0
+
+#define gpu_write(dev, reg, data) \
+	writel(data, (dev)->iomem + (reg))
+
+#define gpu_read(dev, reg) \
+	readl((dev)->iomem + (reg))
+
+#endif