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git://nv-tegra.nvidia.com/linux-nvgpu.git
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0793de62b2
Move to a more generic name of GPU_ALLOC_*. Change-Id: Icbbd366847a9d74f83f578e4d9ea917a6e8ea3e2 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1176445 Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
166 lines
4.5 KiB
C
166 lines
4.5 KiB
C
/*
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* Copyright (c) 2011-2015, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GK20A_ALLOCATOR_H
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#define GK20A_ALLOCATOR_H
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/platform_device.h>
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/* #define ALLOCATOR_DEBUG */
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struct gk20a_allocator;
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struct vm_gk20a;
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/*
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* Operations for an allocator to implement.
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*/
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struct gk20a_allocator_ops {
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u64 (*alloc)(struct gk20a_allocator *allocator, u64 len);
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void (*free)(struct gk20a_allocator *allocator, u64 addr);
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/*
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* Special interface to allocate a memory region with a specific
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* starting address. Yikes. Note: if free() works for freeing both
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* regular and fixed allocations then free_fixed() does not need to
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* be implemented. This behavior exists for legacy reasons and should
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* not be propagated to new allocators.
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*/
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u64 (*alloc_fixed)(struct gk20a_allocator *allocator,
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u64 base, u64 len);
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void (*free_fixed)(struct gk20a_allocator *allocator,
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u64 base, u64 len);
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/*
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* Returns info about the allocator.
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*/
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u64 (*base)(struct gk20a_allocator *allocator);
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u64 (*length)(struct gk20a_allocator *allocator);
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u64 (*end)(struct gk20a_allocator *allocator);
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int (*inited)(struct gk20a_allocator *allocator);
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/* Destructor. */
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void (*fini)(struct gk20a_allocator *allocator);
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/* Debugging. */
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void (*print_stats)(struct gk20a_allocator *allocator,
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struct seq_file *s, int lock);
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};
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struct gk20a_allocator {
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char name[32];
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struct mutex lock;
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void *priv;
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const struct gk20a_allocator_ops *ops;
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struct dentry *debugfs_entry;
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};
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/*
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* Allocator flags.
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*/
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#define GPU_ALLOC_GVA_SPACE 0x1
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static inline void alloc_lock(struct gk20a_allocator *a)
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{
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mutex_lock(&a->lock);
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}
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static inline void alloc_unlock(struct gk20a_allocator *a)
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{
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mutex_unlock(&a->lock);
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}
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/*
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* Buddy allocator specific initializers.
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*/
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int __gk20a_buddy_allocator_init(struct gk20a_allocator *a,
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struct vm_gk20a *vm, const char *name,
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u64 base, u64 size, u64 blk_size,
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u64 max_order, u64 flags);
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int gk20a_buddy_allocator_init(struct gk20a_allocator *allocator,
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const char *name, u64 base, u64 size,
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u64 blk_size, u64 flags);
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#define GPU_BALLOC_MAX_ORDER 31
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/*
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* Allocator APIs.
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*/
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u64 gk20a_alloc(struct gk20a_allocator *allocator, u64 len);
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void gk20a_free(struct gk20a_allocator *allocator, u64 addr);
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u64 gk20a_alloc_fixed(struct gk20a_allocator *allocator, u64 base, u64 len);
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void gk20a_free_fixed(struct gk20a_allocator *allocator, u64 base, u64 len);
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u64 gk20a_alloc_base(struct gk20a_allocator *a);
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u64 gk20a_alloc_length(struct gk20a_allocator *a);
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u64 gk20a_alloc_end(struct gk20a_allocator *a);
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u64 gk20a_alloc_initialized(struct gk20a_allocator *a);
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void gk20a_alloc_destroy(struct gk20a_allocator *allocator);
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void gk20a_alloc_print_stats(struct gk20a_allocator *a,
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struct seq_file *s, int lock);
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/*
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* Common functionality for the internals of the allocators.
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*/
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void gk20a_init_alloc_debug(struct gk20a_allocator *a);
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void gk20a_fini_alloc_debug(struct gk20a_allocator *a);
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int __gk20a_alloc_common_init(struct gk20a_allocator *a,
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const char *name, void *priv,
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const struct gk20a_allocator_ops *ops);
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/*
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* Debug stuff.
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*/
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extern u32 gk20a_alloc_tracing_on;
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void gk20a_alloc_debugfs_init(struct platform_device *pdev);
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#define gk20a_alloc_trace_func() \
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do { \
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if (gk20a_alloc_tracing_on) \
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trace_printk("%s\n", __func__); \
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} while (0)
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#define gk20a_alloc_trace_func_done() \
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do { \
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if (gk20a_alloc_tracing_on) \
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trace_printk("%s_done\n", __func__); \
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} while (0)
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#define __alloc_pstat(seq, allocator, fmt, arg...) \
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do { \
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if (s) \
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seq_printf(seq, fmt, ##arg); \
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else \
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alloc_dbg(allocator, fmt, ##arg); \
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} while (0)
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#if defined(ALLOCATOR_DEBUG)
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#define alloc_dbg(allocator, format, arg...) \
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pr_info("%-25s %25s() " format, \
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allocator->name, __func__, ##arg)
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#else
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#define alloc_dbg(allocator, format, arg...)
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#endif
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#endif /* GK20A_ALLOCATOR_H */
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