diff options
Diffstat (limited to 'mali_kbase/mmu/mali_kbase_mmu_hw.h')
| -rw-r--r-- | mali_kbase/mmu/mali_kbase_mmu_hw.h | 155 |
1 files changed, 120 insertions, 35 deletions
diff --git a/mali_kbase/mmu/mali_kbase_mmu_hw.h b/mali_kbase/mmu/mali_kbase_mmu_hw.h index 31658e0..49e050e 100644 --- a/mali_kbase/mmu/mali_kbase_mmu_hw.h +++ b/mali_kbase/mmu/mali_kbase_mmu_hw.h @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * - * (C) COPYRIGHT 2014-2015, 2018-2022 ARM Limited. All rights reserved. + * (C) COPYRIGHT 2014-2023 ARM Limited. All rights reserved. * * This program is free software and is provided to you under the terms of the * GNU General Public License version 2 as published by the Free Software @@ -55,32 +55,14 @@ enum kbase_mmu_fault_type { }; /** - * enum kbase_mmu_op_type - enum for MMU operations - * @KBASE_MMU_OP_NONE: To help catch uninitialized struct - * @KBASE_MMU_OP_FIRST: The lower boundary of enum - * @KBASE_MMU_OP_LOCK: Lock memory region - * @KBASE_MMU_OP_UNLOCK: Unlock memory region - * @KBASE_MMU_OP_FLUSH_PT: Flush page table (CLN+INV L2 only) - * @KBASE_MMU_OP_FLUSH_MEM: Flush memory (CLN+INV L2+LSC) - * @KBASE_MMU_OP_COUNT: The upper boundary of enum - */ -enum kbase_mmu_op_type { - KBASE_MMU_OP_NONE = 0, /* Must be zero */ - KBASE_MMU_OP_FIRST, /* Must be the first non-zero op */ - KBASE_MMU_OP_LOCK = KBASE_MMU_OP_FIRST, - KBASE_MMU_OP_UNLOCK, - KBASE_MMU_OP_FLUSH_PT, - KBASE_MMU_OP_FLUSH_MEM, - KBASE_MMU_OP_COUNT /* Must be the last in enum */ -}; - -/** - * struct kbase_mmu_hw_op_param - parameters for kbase_mmu_hw_do_operation() - * @vpfn: MMU Virtual Page Frame Number to start the operation on. - * @nr: Number of pages to work on. - * @op: Operation type (written to ASn_COMMAND). - * @kctx_id: Kernel context ID for MMU command tracepoint - * @mmu_sync_info: Indicates whether this call is synchronous wrt MMU ops. + * struct kbase_mmu_hw_op_param - parameters for kbase_mmu_hw_do_* functions + * @vpfn: MMU Virtual Page Frame Number to start the operation on. + * @nr: Number of pages to work on. + * @op: Operation type (written to AS_COMMAND). + * @kctx_id: Kernel context ID for MMU command tracepoint. + * @mmu_sync_info: Indicates whether this call is synchronous wrt MMU ops. + * @flush_skip_levels: Page table levels to skip flushing. (Only + * applicable if GPU supports feature) */ struct kbase_mmu_hw_op_param { u64 vpfn; @@ -88,6 +70,7 @@ struct kbase_mmu_hw_op_param { enum kbase_mmu_op_type op; u32 kctx_id; enum kbase_caller_mmu_sync_info mmu_sync_info; + u64 flush_skip_levels; }; /** @@ -102,18 +85,120 @@ void kbase_mmu_hw_configure(struct kbase_device *kbdev, struct kbase_as *as); /** - * kbase_mmu_hw_do_operation - Issue an operation to the MMU. - * @kbdev: kbase device to issue the MMU operation on. - * @as: address space to issue the MMU operation on. - * @op_param: parameters for the operation. + * kbase_mmu_hw_do_lock - Issue LOCK command to the MMU and program + * the LOCKADDR register. + * + * @kbdev: Kbase device to issue the MMU operation on. + * @as: Address space to issue the MMU operation on. + * @op_param: Pointer to struct containing information about the MMU + * operation to perform. + * + * hwaccess_lock needs to be held when calling this function. + * + * Return: 0 if issuing the command was successful, otherwise an error code. + */ +int kbase_mmu_hw_do_lock(struct kbase_device *kbdev, struct kbase_as *as, + const struct kbase_mmu_hw_op_param *op_param); + +/** + * kbase_mmu_hw_do_unlock_no_addr - Issue UNLOCK command to the MMU without + * programming the LOCKADDR register and wait + * for it to complete before returning. + * + * @kbdev: Kbase device to issue the MMU operation on. + * @as: Address space to issue the MMU operation on. + * @op_param: Pointer to struct containing information about the MMU + * operation to perform. + * + * This function should be called for GPU where GPU command is used to flush + * the cache(s) instead of MMU command. + * + * Return: 0 if issuing the command was successful, otherwise an error code. + */ +int kbase_mmu_hw_do_unlock_no_addr(struct kbase_device *kbdev, struct kbase_as *as, + const struct kbase_mmu_hw_op_param *op_param); + +/** + * kbase_mmu_hw_do_unlock - Issue UNLOCK command to the MMU and wait for it + * to complete before returning. + * + * @kbdev: Kbase device to issue the MMU operation on. + * @as: Address space to issue the MMU operation on. + * @op_param: Pointer to struct containing information about the MMU + * operation to perform. + * + * Return: 0 if issuing the command was successful, otherwise an error code. + */ +int kbase_mmu_hw_do_unlock(struct kbase_device *kbdev, struct kbase_as *as, + const struct kbase_mmu_hw_op_param *op_param); +/** + * kbase_mmu_hw_do_lock - Issue a LOCK operation to the MMU. * - * Issue an operation (MMU invalidate, MMU flush, etc) on the address space that - * is associated with the provided kbase_context over the specified range + * @kbdev: Kbase device to issue the MMU operation on. + * @as: Address space to issue the MMU operation on. + * @op_param: Pointer to struct containing information about the MMU + * operation to perform. + * + * Context: Acquires the hwaccess_lock, expects the caller to hold the mmu_hw_mutex * * Return: Zero if the operation was successful, non-zero otherwise. */ -int kbase_mmu_hw_do_operation(struct kbase_device *kbdev, struct kbase_as *as, - struct kbase_mmu_hw_op_param *op_param); +int kbase_mmu_hw_do_lock(struct kbase_device *kbdev, struct kbase_as *as, + const struct kbase_mmu_hw_op_param *op_param); + +/** + * kbase_mmu_hw_do_flush - Issue a flush operation to the MMU. + * + * @kbdev: Kbase device to issue the MMU operation on. + * @as: Address space to issue the MMU operation on. + * @op_param: Pointer to struct containing information about the MMU + * operation to perform. + * + * Issue a flush operation on the address space as per the information + * specified inside @op_param. This function should not be called for + * GPUs where MMU command to flush the cache(s) is deprecated. + * mmu_hw_mutex needs to be held when calling this function. + * + * Return: 0 if the operation was successful, non-zero otherwise. + */ +int kbase_mmu_hw_do_flush(struct kbase_device *kbdev, struct kbase_as *as, + const struct kbase_mmu_hw_op_param *op_param); + +/** + * kbase_mmu_hw_do_flush_locked - Issue a flush operation to the MMU. + * + * @kbdev: Kbase device to issue the MMU operation on. + * @as: Address space to issue the MMU operation on. + * @op_param: Pointer to struct containing information about the MMU + * operation to perform. + * + * Issue a flush operation on the address space as per the information + * specified inside @op_param. This function should not be called for + * GPUs where MMU command to flush the cache(s) is deprecated. + * Both mmu_hw_mutex and hwaccess_lock need to be held when calling this + * function. + * + * Return: 0 if the operation was successful, non-zero otherwise. + */ +int kbase_mmu_hw_do_flush_locked(struct kbase_device *kbdev, struct kbase_as *as, + const struct kbase_mmu_hw_op_param *op_param); + +/** + * kbase_mmu_hw_do_flush_on_gpu_ctrl - Issue a flush operation to the MMU. + * + * @kbdev: Kbase device to issue the MMU operation on. + * @as: Address space to issue the MMU operation on. + * @op_param: Pointer to struct containing information about the MMU + * operation to perform. + * + * Issue a flush operation on the address space as per the information + * specified inside @op_param. GPU command is used to flush the cache(s) + * instead of the MMU command. + * + * Return: 0 if the operation was successful, non-zero otherwise. + */ +int kbase_mmu_hw_do_flush_on_gpu_ctrl(struct kbase_device *kbdev, struct kbase_as *as, + const struct kbase_mmu_hw_op_param *op_param); /** * kbase_mmu_hw_clear_fault - Clear a fault that has been previously reported by |