add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/include/linux/io-mapping.h
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@@ -1,18 +1,6 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Copyright © 2008 Keith Packard <keithp@keithp.com>
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- *
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- * This file is free software; you can redistribute it and/or modify
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- * it under the terms of version 2 of the GNU General Public License
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- * as 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, write to the Free Software Foundation,
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- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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  */
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 #ifndef _LINUX_IO_MAPPING_H
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@@ -22,13 +10,14 @@
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 #include <linux/slab.h>
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 #include <linux/bug.h>
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 #include <linux/io.h>
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+#include <linux/pgtable.h>
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 #include <asm/page.h>
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 /*
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  * The io_mapping mechanism provides an abstraction for mapping
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  * individual pages from an io device to the CPU in an efficient fashion.
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  *
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- * See Documentation/io-mapping.txt
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+ * See Documentation/driver-api/io-mapping.rst
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  */
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 struct io_mapping {
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@@ -40,6 +29,7 @@
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 #ifdef CONFIG_HAVE_ATOMIC_IOMAP
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+#include <linux/pfn.h>
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 #include <asm/iomap.h>
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 /*
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  * For small address space machines, mapping large objects
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@@ -70,24 +60,20 @@
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 	iomap_free(mapping->base, mapping->size);
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 }
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-/* Atomic map/unmap */
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+/* Temporary mappings which are only valid in the current context */
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 static inline void __iomem *
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-io_mapping_map_atomic_wc(struct io_mapping *mapping,
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-			 unsigned long offset)
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+io_mapping_map_local_wc(struct io_mapping *mapping, unsigned long offset)
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 {
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 	resource_size_t phys_addr;
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-	unsigned long pfn;
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 	BUG_ON(offset >= mapping->size);
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 	phys_addr = mapping->base + offset;
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-	pfn = (unsigned long) (phys_addr >> PAGE_SHIFT);
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-	return iomap_atomic_prot_pfn(pfn, mapping->prot);
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+	return __iomap_local_pfn_prot(PHYS_PFN(phys_addr), mapping->prot);
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 }
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-static inline void
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-io_mapping_unmap_atomic(void __iomem *vaddr)
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+static inline void io_mapping_unmap_local(void __iomem *vaddr)
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 {
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-	iounmap_atomic(vaddr);
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+	kunmap_local_indexed((void __force *)vaddr);
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 }
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 static inline void __iomem *
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@@ -109,10 +95,9 @@
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 	iounmap(vaddr);
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 }
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-#else
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+#else  /* HAVE_ATOMIC_IOMAP */
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 #include <linux/uaccess.h>
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-#include <asm/pgtable.h>
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 /* Create the io_mapping object*/
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 static inline struct io_mapping *
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@@ -157,25 +142,19 @@
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 {
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 }
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-/* Atomic map/unmap */
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+/* Temporary mappings which are only valid in the current context */
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 static inline void __iomem *
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-io_mapping_map_atomic_wc(struct io_mapping *mapping,
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-			 unsigned long offset)
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+io_mapping_map_local_wc(struct io_mapping *mapping, unsigned long offset)
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 {
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-	preempt_disable();
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-	pagefault_disable();
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 	return io_mapping_map_wc(mapping, offset, PAGE_SIZE);
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 }
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-static inline void
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-io_mapping_unmap_atomic(void __iomem *vaddr)
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+static inline void io_mapping_unmap_local(void __iomem *vaddr)
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 {
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 	io_mapping_unmap(vaddr);
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-	pagefault_enable();
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-	preempt_enable();
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 }
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-#endif /* HAVE_ATOMIC_IOMAP */
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+#endif /* !HAVE_ATOMIC_IOMAP */
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 static inline struct io_mapping *
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 io_mapping_create_wc(resource_size_t base,