mk-rootfs.sh

hc

2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/drivers/iommu/io-pgtable.c
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@@ -1,33 +1,16 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Generic page table allocator for IOMMUs.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for 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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  * Copyright (C) 2014 ARM Limited
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  *
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  * Author: Will Deacon <will.deacon@arm.com>
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  */
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-#define pr_fmt(fmt)	"io-pgtable: " fmt
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-
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 #include <linux/bug.h>
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 #include <linux/io-pgtable.h>
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 #include <linux/kernel.h>
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 #include <linux/types.h>
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-#include <linux/iommu.h>
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-#include <linux/debugfs.h>
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-#include <linux/atomic.h>
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-#include <linux/module.h>
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14
 
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 static const struct io_pgtable_init_fns *
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 io_pgtable_init_table[IO_PGTABLE_NUM_FMTS] = {
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@@ -36,16 +19,12 @@
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 	[ARM_32_LPAE_S2] = &io_pgtable_arm_32_lpae_s2_init_fns,
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 	[ARM_64_LPAE_S1] = &io_pgtable_arm_64_lpae_s1_init_fns,
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 	[ARM_64_LPAE_S2] = &io_pgtable_arm_64_lpae_s2_init_fns,
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+	[ARM_MALI_LPAE] = &io_pgtable_arm_mali_lpae_init_fns,
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 #endif
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 #ifdef CONFIG_IOMMU_IO_PGTABLE_ARMV7S
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 	[ARM_V7S] = &io_pgtable_arm_v7s_init_fns,
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 #endif
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-#ifdef CONFIG_IOMMU_IO_PGTABLE_FAST
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-	[ARM_V8L_FAST] = &io_pgtable_av8l_fast_init_fns,
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-#endif
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 };
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-
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-static struct dentry *io_pgtable_top;
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 struct io_pgtable_ops *alloc_io_pgtable_ops(enum io_pgtable_fmt fmt,
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 					    struct io_pgtable_cfg *cfg,
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@@ -84,56 +63,8 @@
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 	if (!ops)
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 		return;
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-	iop = container_of(ops, struct io_pgtable, ops);
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+	iop = io_pgtable_ops_to_pgtable(ops);
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 	io_pgtable_tlb_flush_all(iop);
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 	io_pgtable_init_table[iop->fmt]->free(iop);
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 }
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 EXPORT_SYMBOL_GPL(free_io_pgtable_ops);
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-
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-static atomic_t pages_allocated;
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-
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-void *io_pgtable_alloc_pages_exact(struct io_pgtable_cfg *cfg, void *cookie,
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-				   size_t size, gfp_t gfp_mask)
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-{
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-	void *ret;
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-
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-	if (cfg->tlb->alloc_pages_exact)
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-		ret = cfg->tlb->alloc_pages_exact(cookie, size, gfp_mask);
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-	else
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-		ret = alloc_pages_exact(size, gfp_mask);
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-
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-	if (likely(ret))
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-		atomic_add(1 << get_order(size), &pages_allocated);
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-
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-	return ret;
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-}
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-
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-void io_pgtable_free_pages_exact(struct io_pgtable_cfg *cfg, void *cookie,
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-				 void *virt, size_t size)
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-{
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-	if (cfg->tlb->free_pages_exact)
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-		cfg->tlb->free_pages_exact(cookie, virt, size);
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-	else
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-		free_pages_exact(virt, size);
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-
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-	atomic_sub(1 << get_order(size), &pages_allocated);
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-}
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-
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-static int __init io_pgtable_init(void)
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-{
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-	static const char io_pgtable_str[] __initconst = "io-pgtable";
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-	static const char pages_str[] __initconst = "pages";
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-
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-	io_pgtable_top = debugfs_create_dir(io_pgtable_str, iommu_debugfs_top);
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-	debugfs_create_atomic_t(pages_str, 0600, io_pgtable_top,
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-				&pages_allocated);
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-	return 0;
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-}
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-
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-static void __exit io_pgtable_exit(void)
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-{
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-	debugfs_remove_recursive(io_pgtable_top);
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-}
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-
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-module_init(io_pgtable_init);
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-module_exit(io_pgtable_exit);