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linux_dsm_epyc7002/drivers/gpu/drm/lima/lima_regs.h
Qiang Yu a1d2a63399 drm/lima: driver for ARM Mali4xx GPUs 
- Mali 4xx GPUs have two kinds of processors GP and PP. GP is for
  OpenGL vertex shader processing and PP is for fragment shader
  processing. Each processor has its own MMU so prcessors work in
  virtual address space.
- There's only one GP but multiple PP (max 4 for mali 400 and 8
  for mali 450) in the same mali 4xx GPU. All PPs are grouped
  togather to handle a single fragment shader task divided by
  FB output tiled pixels. Mali 400 user space driver is
  responsible for assign target tiled pixels to each PP, but mali
  450 has a HW module called DLBU to dynamically balance each
  PP's load.
- User space driver allocate buffer object and map into GPU
  virtual address space, upload command stream and draw data with
  CPU mmap of the buffer object, then submit task to GP/PP with
  a register frame indicating where is the command stream and misc
  settings.
- There's no command stream validation/relocation due to each user
  process has its own GPU virtual address space. GP/PP's MMU switch
  virtual address space before running two tasks from different
  user process. Error or evil user space code just get MMU fault
  or GP/PP error IRQ, then the HW/SW will be recovered.
- Use GEM+shmem for MM. Currently just alloc and pin memory when
  gem object creation. GPU vm map of the buffer is also done in
  the alloc stage in kernel space. We may delay the memory
  allocation and real GPU vm map to command submission stage in the
  furture as improvement.
- Use drm_sched for GPU task schedule. Each OpenGL context should
  have a lima context object in the kernel to distinguish tasks
  from different user. drm_sched gets task from each lima context
  in a fair way.

mesa driver can be found here before upstreamed:
https://gitlab.freedesktop.org/lima/mesa

v8:
- add comments for in_sync
- fix ctx free miss mutex unlock

v7:
- remove lima_fence_ops with default value
- move fence slab create to device probe
- check pad ioctl args to be zero
- add comments for user/kernel interface

v6:
- fix comments by checkpatch.pl

v5:
- export gp/pp version to userspace
- rebase on drm-misc-next

v4:
- use get param interface to get info
- separate context create/free ioctl
- remove unused max sched task param
- update copyright time
- use xarray instead of idr
- stop using drmP.h

v3:
- fix comments from kbuild robot
- restrict supported arch to tested ones

v2:
- fix syscall argument check
- fix job finish fence leak since kernel 5.0
- use drm syncobj to replace native fence
- move buffer object GPU va map into kernel
- reserve syscall argument space for future info
- remove kernel gem modifier
- switch TTM back to GEM+shmem MM
- use time based io poll
- use whole register name
- adopt gem reservation obj integration
- use drm_timeout_abs_to_jiffies

Cc: Eric Anholt <eric@anholt.net>
Cc: Rob Herring <robh@kernel.org>
Cc: Christian König <ckoenig.leichtzumerken@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: Andreas Baierl <ichgeh@imkreisrum.de>
Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Simon Shields <simon@lineageos.org>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Rob Herring <robh@kerrnel.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/291200/
2019-04-01 10:45:20 -07:00

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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright 2010-2017 ARM Limited. All rights reserved.
* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com>
*/
#ifndef __LIMA_REGS_H__
#define __LIMA_REGS_H__
/* This file's register definition is collected from the
* official ARM Mali Utgard GPU kernel driver source code
*/
/* PMU regs */
#define LIMA_PMU_POWER_UP 0x00
#define LIMA_PMU_POWER_DOWN 0x04
#define LIMA_PMU_POWER_GP0_MASK BIT(0)
#define LIMA_PMU_POWER_L2_MASK BIT(1)
#define LIMA_PMU_POWER_PP_MASK(i) BIT(2 + i)
/*
* On Mali450 each block automatically starts up its corresponding L2
* and the PPs are not fully independent controllable.
* Instead PP0, PP1-3 and PP4-7 can be turned on or off.
*/
#define LIMA450_PMU_POWER_PP0_MASK BIT(1)
#define LIMA450_PMU_POWER_PP13_MASK BIT(2)
#define LIMA450_PMU_POWER_PP47_MASK BIT(3)
#define LIMA_PMU_STATUS 0x08
#define LIMA_PMU_INT_MASK 0x0C
#define LIMA_PMU_INT_RAWSTAT 0x10
#define LIMA_PMU_INT_CLEAR 0x18
#define LIMA_PMU_INT_CMD_MASK BIT(0)
#define LIMA_PMU_SW_DELAY 0x1C
/* L2 cache regs */
#define LIMA_L2_CACHE_SIZE 0x0004
#define LIMA_L2_CACHE_STATUS 0x0008
#define LIMA_L2_CACHE_STATUS_COMMAND_BUSY BIT(0)
#define LIMA_L2_CACHE_STATUS_DATA_BUSY BIT(1)
#define LIMA_L2_CACHE_COMMAND 0x0010
#define LIMA_L2_CACHE_COMMAND_CLEAR_ALL BIT(0)
#define LIMA_L2_CACHE_CLEAR_PAGE 0x0014
#define LIMA_L2_CACHE_MAX_READS 0x0018
#define LIMA_L2_CACHE_ENABLE 0x001C
#define LIMA_L2_CACHE_ENABLE_ACCESS BIT(0)
#define LIMA_L2_CACHE_ENABLE_READ_ALLOCATE BIT(1)
#define LIMA_L2_CACHE_PERFCNT_SRC0 0x0020
#define LIMA_L2_CACHE_PERFCNT_VAL0 0x0024
#define LIMA_L2_CACHE_PERFCNT_SRC1 0x0028
#define LIMA_L2_CACHE_ERFCNT_VAL1 0x002C
/* GP regs */
#define LIMA_GP_VSCL_START_ADDR 0x00
#define LIMA_GP_VSCL_END_ADDR 0x04
#define LIMA_GP_PLBUCL_START_ADDR 0x08
#define LIMA_GP_PLBUCL_END_ADDR 0x0c
#define LIMA_GP_PLBU_ALLOC_START_ADDR 0x10
#define LIMA_GP_PLBU_ALLOC_END_ADDR 0x14
#define LIMA_GP_CMD 0x20
#define LIMA_GP_CMD_START_VS BIT(0)
#define LIMA_GP_CMD_START_PLBU BIT(1)
#define LIMA_GP_CMD_UPDATE_PLBU_ALLOC BIT(4)
#define LIMA_GP_CMD_RESET BIT(5)
#define LIMA_GP_CMD_FORCE_HANG BIT(6)
#define LIMA_GP_CMD_STOP_BUS BIT(9)
#define LIMA_GP_CMD_SOFT_RESET BIT(10)
#define LIMA_GP_INT_RAWSTAT 0x24
#define LIMA_GP_INT_CLEAR 0x28
#define LIMA_GP_INT_MASK 0x2C
#define LIMA_GP_INT_STAT 0x30
#define LIMA_GP_IRQ_VS_END_CMD_LST BIT(0)
#define LIMA_GP_IRQ_PLBU_END_CMD_LST BIT(1)
#define LIMA_GP_IRQ_PLBU_OUT_OF_MEM BIT(2)
#define LIMA_GP_IRQ_VS_SEM_IRQ BIT(3)
#define LIMA_GP_IRQ_PLBU_SEM_IRQ BIT(4)
#define LIMA_GP_IRQ_HANG BIT(5)
#define LIMA_GP_IRQ_FORCE_HANG BIT(6)
#define LIMA_GP_IRQ_PERF_CNT_0_LIMIT BIT(7)
#define LIMA_GP_IRQ_PERF_CNT_1_LIMIT BIT(8)
#define LIMA_GP_IRQ_WRITE_BOUND_ERR BIT(9)
#define LIMA_GP_IRQ_SYNC_ERROR BIT(10)
#define LIMA_GP_IRQ_AXI_BUS_ERROR BIT(11)
#define LIMA_GP_IRQ_AXI_BUS_STOPPED BIT(12)
#define LIMA_GP_IRQ_VS_INVALID_CMD BIT(13)
#define LIMA_GP_IRQ_PLB_INVALID_CMD BIT(14)
#define LIMA_GP_IRQ_RESET_COMPLETED BIT(19)
#define LIMA_GP_IRQ_SEMAPHORE_UNDERFLOW BIT(20)
#define LIMA_GP_IRQ_SEMAPHORE_OVERFLOW BIT(21)
#define LIMA_GP_IRQ_PTR_ARRAY_OUT_OF_BOUNDS BIT(22)
#define LIMA_GP_WRITE_BOUND_LOW 0x34
#define LIMA_GP_PERF_CNT_0_ENABLE 0x3C
#define LIMA_GP_PERF_CNT_1_ENABLE 0x40
#define LIMA_GP_PERF_CNT_0_SRC 0x44
#define LIMA_GP_PERF_CNT_1_SRC 0x48
#define LIMA_GP_PERF_CNT_0_VALUE 0x4C
#define LIMA_GP_PERF_CNT_1_VALUE 0x50
#define LIMA_GP_PERF_CNT_0_LIMIT 0x54
#define LIMA_GP_STATUS 0x68
#define LIMA_GP_STATUS_VS_ACTIVE BIT(1)
#define LIMA_GP_STATUS_BUS_STOPPED BIT(2)
#define LIMA_GP_STATUS_PLBU_ACTIVE BIT(3)
#define LIMA_GP_STATUS_BUS_ERROR BIT(6)
#define LIMA_GP_STATUS_WRITE_BOUND_ERR BIT(8)
#define LIMA_GP_VERSION 0x6C
#define LIMA_GP_VSCL_START_ADDR_READ 0x80
#define LIMA_GP_PLBCL_START_ADDR_READ 0x84
#define LIMA_GP_CONTR_AXI_BUS_ERROR_STAT 0x94
#define LIMA_GP_IRQ_MASK_ALL \
( \
LIMA_GP_IRQ_VS_END_CMD_LST | \
LIMA_GP_IRQ_PLBU_END_CMD_LST | \
LIMA_GP_IRQ_PLBU_OUT_OF_MEM | \
LIMA_GP_IRQ_VS_SEM_IRQ | \
LIMA_GP_IRQ_PLBU_SEM_IRQ | \
LIMA_GP_IRQ_HANG | \
LIMA_GP_IRQ_FORCE_HANG | \
LIMA_GP_IRQ_PERF_CNT_0_LIMIT | \
LIMA_GP_IRQ_PERF_CNT_1_LIMIT | \
LIMA_GP_IRQ_WRITE_BOUND_ERR | \
LIMA_GP_IRQ_SYNC_ERROR | \
LIMA_GP_IRQ_AXI_BUS_ERROR | \
LIMA_GP_IRQ_AXI_BUS_STOPPED | \
LIMA_GP_IRQ_VS_INVALID_CMD | \
LIMA_GP_IRQ_PLB_INVALID_CMD | \
LIMA_GP_IRQ_RESET_COMPLETED | \
LIMA_GP_IRQ_SEMAPHORE_UNDERFLOW | \
LIMA_GP_IRQ_SEMAPHORE_OVERFLOW | \
LIMA_GP_IRQ_PTR_ARRAY_OUT_OF_BOUNDS)
#define LIMA_GP_IRQ_MASK_ERROR \
( \
LIMA_GP_IRQ_PLBU_OUT_OF_MEM | \
LIMA_GP_IRQ_FORCE_HANG | \
LIMA_GP_IRQ_WRITE_BOUND_ERR | \
LIMA_GP_IRQ_SYNC_ERROR | \
LIMA_GP_IRQ_AXI_BUS_ERROR | \
LIMA_GP_IRQ_VS_INVALID_CMD | \
LIMA_GP_IRQ_PLB_INVALID_CMD | \
LIMA_GP_IRQ_SEMAPHORE_UNDERFLOW | \
LIMA_GP_IRQ_SEMAPHORE_OVERFLOW | \
LIMA_GP_IRQ_PTR_ARRAY_OUT_OF_BOUNDS)
#define LIMA_GP_IRQ_MASK_USED \
( \
LIMA_GP_IRQ_VS_END_CMD_LST | \
LIMA_GP_IRQ_PLBU_END_CMD_LST | \
LIMA_GP_IRQ_MASK_ERROR)
/* PP regs */
#define LIMA_PP_FRAME 0x0000
#define LIMA_PP_RSW 0x0004
#define LIMA_PP_STACK 0x0030
#define LIMA_PP_STACK_SIZE 0x0034
#define LIMA_PP_ORIGIN_OFFSET_X 0x0040
#define LIMA_PP_WB(i) (0x0100 * (i + 1))
#define LIMA_PP_WB_SOURCE_SELECT 0x0000
#define LIMA_PP_WB_SOURCE_ADDR 0x0004
#define LIMA_PP_VERSION 0x1000
#define LIMA_PP_CURRENT_REND_LIST_ADDR 0x1004
#define LIMA_PP_STATUS 0x1008
#define LIMA_PP_STATUS_RENDERING_ACTIVE BIT(0)
#define LIMA_PP_STATUS_BUS_STOPPED BIT(4)
#define LIMA_PP_CTRL 0x100c
#define LIMA_PP_CTRL_STOP_BUS BIT(0)
#define LIMA_PP_CTRL_FLUSH_CACHES BIT(3)
#define LIMA_PP_CTRL_FORCE_RESET BIT(5)
#define LIMA_PP_CTRL_START_RENDERING BIT(6)
#define LIMA_PP_CTRL_SOFT_RESET BIT(7)
#define LIMA_PP_INT_RAWSTAT 0x1020
#define LIMA_PP_INT_CLEAR 0x1024
#define LIMA_PP_INT_MASK 0x1028
#define LIMA_PP_INT_STATUS 0x102c
#define LIMA_PP_IRQ_END_OF_FRAME BIT(0)
#define LIMA_PP_IRQ_END_OF_TILE BIT(1)
#define LIMA_PP_IRQ_HANG BIT(2)
#define LIMA_PP_IRQ_FORCE_HANG BIT(3)
#define LIMA_PP_IRQ_BUS_ERROR BIT(4)
#define LIMA_PP_IRQ_BUS_STOP BIT(5)
#define LIMA_PP_IRQ_CNT_0_LIMIT BIT(6)
#define LIMA_PP_IRQ_CNT_1_LIMIT BIT(7)
#define LIMA_PP_IRQ_WRITE_BOUNDARY_ERROR BIT(8)
#define LIMA_PP_IRQ_INVALID_PLIST_COMMAND BIT(9)
#define LIMA_PP_IRQ_CALL_STACK_UNDERFLOW BIT(10)
#define LIMA_PP_IRQ_CALL_STACK_OVERFLOW BIT(11)
#define LIMA_PP_IRQ_RESET_COMPLETED BIT(12)
#define LIMA_PP_WRITE_BOUNDARY_LOW 0x1044
#define LIMA_PP_BUS_ERROR_STATUS 0x1050
#define LIMA_PP_PERF_CNT_0_ENABLE 0x1080
#define LIMA_PP_PERF_CNT_0_SRC 0x1084
#define LIMA_PP_PERF_CNT_0_LIMIT 0x1088
#define LIMA_PP_PERF_CNT_0_VALUE 0x108c
#define LIMA_PP_PERF_CNT_1_ENABLE 0x10a0
#define LIMA_PP_PERF_CNT_1_SRC 0x10a4
#define LIMA_PP_PERF_CNT_1_LIMIT 0x10a8
#define LIMA_PP_PERF_CNT_1_VALUE 0x10ac
#define LIMA_PP_PERFMON_CONTR 0x10b0
#define LIMA_PP_PERFMON_BASE 0x10b4
#define LIMA_PP_IRQ_MASK_ALL \
( \
LIMA_PP_IRQ_END_OF_FRAME | \
LIMA_PP_IRQ_END_OF_TILE | \
LIMA_PP_IRQ_HANG | \
LIMA_PP_IRQ_FORCE_HANG | \
LIMA_PP_IRQ_BUS_ERROR | \
LIMA_PP_IRQ_BUS_STOP | \
LIMA_PP_IRQ_CNT_0_LIMIT | \
LIMA_PP_IRQ_CNT_1_LIMIT | \
LIMA_PP_IRQ_WRITE_BOUNDARY_ERROR | \
LIMA_PP_IRQ_INVALID_PLIST_COMMAND | \
LIMA_PP_IRQ_CALL_STACK_UNDERFLOW | \
LIMA_PP_IRQ_CALL_STACK_OVERFLOW | \
LIMA_PP_IRQ_RESET_COMPLETED)
#define LIMA_PP_IRQ_MASK_ERROR \
( \
LIMA_PP_IRQ_FORCE_HANG | \
LIMA_PP_IRQ_BUS_ERROR | \
LIMA_PP_IRQ_WRITE_BOUNDARY_ERROR | \
LIMA_PP_IRQ_INVALID_PLIST_COMMAND | \
LIMA_PP_IRQ_CALL_STACK_UNDERFLOW | \
LIMA_PP_IRQ_CALL_STACK_OVERFLOW)
#define LIMA_PP_IRQ_MASK_USED \
( \
LIMA_PP_IRQ_END_OF_FRAME | \
LIMA_PP_IRQ_MASK_ERROR)
/* MMU regs */
#define LIMA_MMU_DTE_ADDR 0x0000
#define LIMA_MMU_STATUS 0x0004
#define LIMA_MMU_STATUS_PAGING_ENABLED BIT(0)
#define LIMA_MMU_STATUS_PAGE_FAULT_ACTIVE BIT(1)
#define LIMA_MMU_STATUS_STALL_ACTIVE BIT(2)
#define LIMA_MMU_STATUS_IDLE BIT(3)
#define LIMA_MMU_STATUS_REPLAY_BUFFER_EMPTY BIT(4)
#define LIMA_MMU_STATUS_PAGE_FAULT_IS_WRITE BIT(5)
#define LIMA_MMU_STATUS_BUS_ID(x) ((x >> 6) & 0x1F)
#define LIMA_MMU_COMMAND 0x0008
#define LIMA_MMU_COMMAND_ENABLE_PAGING 0x00
#define LIMA_MMU_COMMAND_DISABLE_PAGING 0x01
#define LIMA_MMU_COMMAND_ENABLE_STALL 0x02
#define LIMA_MMU_COMMAND_DISABLE_STALL 0x03
#define LIMA_MMU_COMMAND_ZAP_CACHE 0x04
#define LIMA_MMU_COMMAND_PAGE_FAULT_DONE 0x05
#define LIMA_MMU_COMMAND_HARD_RESET 0x06
#define LIMA_MMU_PAGE_FAULT_ADDR 0x000C
#define LIMA_MMU_ZAP_ONE_LINE 0x0010
#define LIMA_MMU_INT_RAWSTAT 0x0014
#define LIMA_MMU_INT_CLEAR 0x0018
#define LIMA_MMU_INT_MASK 0x001C
#define LIMA_MMU_INT_PAGE_FAULT BIT(0)
#define LIMA_MMU_INT_READ_BUS_ERROR BIT(1)
#define LIMA_MMU_INT_STATUS 0x0020
#define LIMA_VM_FLAG_PRESENT BIT(0)
#define LIMA_VM_FLAG_READ_PERMISSION BIT(1)
#define LIMA_VM_FLAG_WRITE_PERMISSION BIT(2)
#define LIMA_VM_FLAG_OVERRIDE_CACHE BIT(3)
#define LIMA_VM_FLAG_WRITE_CACHEABLE BIT(4)
#define LIMA_VM_FLAG_WRITE_ALLOCATE BIT(5)
#define LIMA_VM_FLAG_WRITE_BUFFERABLE BIT(6)
#define LIMA_VM_FLAG_READ_CACHEABLE BIT(7)
#define LIMA_VM_FLAG_READ_ALLOCATE BIT(8)
#define LIMA_VM_FLAG_MASK 0x1FF
#define LIMA_VM_FLAGS_CACHE ( \
LIMA_VM_FLAG_PRESENT | \
LIMA_VM_FLAG_READ_PERMISSION | \
LIMA_VM_FLAG_WRITE_PERMISSION | \
LIMA_VM_FLAG_OVERRIDE_CACHE | \
LIMA_VM_FLAG_WRITE_CACHEABLE | \
LIMA_VM_FLAG_WRITE_BUFFERABLE | \
LIMA_VM_FLAG_READ_CACHEABLE | \
LIMA_VM_FLAG_READ_ALLOCATE)
#define LIMA_VM_FLAGS_UNCACHE ( \
LIMA_VM_FLAG_PRESENT | \
LIMA_VM_FLAG_READ_PERMISSION | \
LIMA_VM_FLAG_WRITE_PERMISSION)
/* DLBU regs */
#define LIMA_DLBU_MASTER_TLLIST_PHYS_ADDR 0x0000
#define LIMA_DLBU_MASTER_TLLIST_VADDR 0x0004
#define LIMA_DLBU_TLLIST_VBASEADDR 0x0008
#define LIMA_DLBU_FB_DIM 0x000C
#define LIMA_DLBU_TLLIST_CONF 0x0010
#define LIMA_DLBU_START_TILE_POS 0x0014
#define LIMA_DLBU_PP_ENABLE_MASK 0x0018
/* BCAST regs */
#define LIMA_BCAST_BROADCAST_MASK 0x0
#define LIMA_BCAST_INTERRUPT_MASK 0x4
#endif
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