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-rw-r--r--arch/nios2/Kconfig35
-rw-r--r--arch/nios2/Kconfig.debug5
-rw-r--r--arch/nios2/include/asm/Kbuild1
-rw-r--r--arch/nios2/include/asm/dma-mapping.h20
-rw-r--r--arch/nios2/mm/dma-mapping.c139
5 files changed, 18 insertions, 182 deletions
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index 3d4ec88f1db1..f4ad1138e6b9 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -1,6 +1,10 @@
# SPDX-License-Identifier: GPL-2.0
config NIOS2
def_bool y
+ select ARCH_HAS_SYNC_DMA_FOR_CPU
+ select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_NO_SWAP
+ select DMA_NONCOHERENT_OPS
select TIMER_OF
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
@@ -38,27 +42,16 @@ config HAS_DMA
config FPU
def_bool n
-config SWAP
- def_bool n
-
config RWSEM_GENERIC_SPINLOCK
def_bool y
config TRACE_IRQFLAGS_SUPPORT
def_bool n
-source "init/Kconfig"
-
menu "Kernel features"
-source "kernel/Kconfig.preempt"
-
-source "kernel/Kconfig.freezer"
-
source "kernel/Kconfig.hz"
-source "mm/Kconfig"
-
config FORCE_MAX_ZONEORDER
int "Maximum zone order"
range 9 20
@@ -195,23 +188,3 @@ config NIOS2_IO_REGION_BASE
default "0xe0000000"
endmenu
-
-menu "Executable file formats"
-
-source "fs/Kconfig.binfmt"
-
-endmenu
-
-source "net/Kconfig"
-
-source "drivers/Kconfig"
-
-source "fs/Kconfig"
-
-source "arch/nios2/Kconfig.debug"
-
-source "security/Kconfig"
-
-source "crypto/Kconfig"
-
-source "lib/Kconfig"
diff --git a/arch/nios2/Kconfig.debug b/arch/nios2/Kconfig.debug
index edfeef049a51..7a49f0d28d14 100644
--- a/arch/nios2/Kconfig.debug
+++ b/arch/nios2/Kconfig.debug
@@ -1,11 +1,8 @@
# SPDX-License-Identifier: GPL-2.0
-menu "Kernel hacking"
config TRACE_IRQFLAGS_SUPPORT
def_bool y
-source "lib/Kconfig.debug"
-
config DEBUG_STACK_USAGE
bool "Enable stack utilization instrumentation"
depends on DEBUG_KERNEL
@@ -24,5 +21,3 @@ config EARLY_PRINTK
This is useful for kernel debugging when your machine crashes very
early before the console code is initialized.
You should normally say N here, unless you want to debug such a crash.
-
-endmenu
diff --git a/arch/nios2/include/asm/Kbuild b/arch/nios2/include/asm/Kbuild
index 64ed3d656956..8fde4fa2c34f 100644
--- a/arch/nios2/include/asm/Kbuild
+++ b/arch/nios2/include/asm/Kbuild
@@ -9,6 +9,7 @@ generic-y += current.h
generic-y += device.h
generic-y += div64.h
generic-y += dma.h
+generic-y += dma-mapping.h
generic-y += emergency-restart.h
generic-y += exec.h
generic-y += extable.h
diff --git a/arch/nios2/include/asm/dma-mapping.h b/arch/nios2/include/asm/dma-mapping.h
deleted file mode 100644
index 6ceb92251da0..000000000000
--- a/arch/nios2/include/asm/dma-mapping.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
- * Copyright (C) 2009 Wind River Systems Inc
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License. See the file COPYING in the main directory of this
- * archive for more details.
- */
-
-#ifndef _ASM_NIOS2_DMA_MAPPING_H
-#define _ASM_NIOS2_DMA_MAPPING_H
-
-extern const struct dma_map_ops nios2_dma_ops;
-
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
-{
- return &nios2_dma_ops;
-}
-
-#endif /* _ASM_NIOS2_DMA_MAPPING_H */
diff --git a/arch/nios2/mm/dma-mapping.c b/arch/nios2/mm/dma-mapping.c
index 4be815519dd4..4af9e5b5ba1c 100644
--- a/arch/nios2/mm/dma-mapping.c
+++ b/arch/nios2/mm/dma-mapping.c
@@ -12,18 +12,18 @@
#include <linux/types.h>
#include <linux/mm.h>
-#include <linux/export.h>
#include <linux/string.h>
-#include <linux/scatterlist.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/cache.h>
#include <asm/cacheflush.h>
-static inline void __dma_sync_for_device(void *vaddr, size_t size,
- enum dma_data_direction direction)
+void arch_sync_dma_for_device(struct device *dev, phys_addr_t paddr,
+ size_t size, enum dma_data_direction dir)
{
- switch (direction) {
+ void *vaddr = phys_to_virt(paddr);
+
+ switch (dir) {
case DMA_FROM_DEVICE:
invalidate_dcache_range((unsigned long)vaddr,
(unsigned long)(vaddr + size));
@@ -42,10 +42,12 @@ static inline void __dma_sync_for_device(void *vaddr, size_t size,
}
}
-static inline void __dma_sync_for_cpu(void *vaddr, size_t size,
- enum dma_data_direction direction)
+void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr,
+ size_t size, enum dma_data_direction dir)
{
- switch (direction) {
+ void *vaddr = phys_to_virt(paddr);
+
+ switch (dir) {
case DMA_BIDIRECTIONAL:
case DMA_FROM_DEVICE:
invalidate_dcache_range((unsigned long)vaddr,
@@ -58,8 +60,8 @@ static inline void __dma_sync_for_cpu(void *vaddr, size_t size,
}
}
-static void *nios2_dma_alloc(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
+void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,
+ gfp_t gfp, unsigned long attrs)
{
void *ret;
@@ -80,125 +82,10 @@ static void *nios2_dma_alloc(struct device *dev, size_t size,
return ret;
}
-static void nios2_dma_free(struct device *dev, size_t size, void *vaddr,
+void arch_dma_free(struct device *dev, size_t size, void *vaddr,
dma_addr_t dma_handle, unsigned long attrs)
{
unsigned long addr = (unsigned long) CAC_ADDR((unsigned long) vaddr);
free_pages(addr, get_order(size));
}
-
-static int nios2_dma_map_sg(struct device *dev, struct scatterlist *sg,
- int nents, enum dma_data_direction direction,
- unsigned long attrs)
-{
- int i;
-
- for_each_sg(sg, sg, nents, i) {
- void *addr = sg_virt(sg);
-
- if (!addr)
- continue;
-
- sg->dma_address = sg_phys(sg);
-
- if (attrs & DMA_ATTR_SKIP_CPU_SYNC)
- continue;
-
- __dma_sync_for_device(addr, sg->length, direction);
- }
-
- return nents;
-}
-
-static dma_addr_t nios2_dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction direction,
- unsigned long attrs)
-{
- void *addr = page_address(page) + offset;
-
- if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
- __dma_sync_for_device(addr, size, direction);
-
- return page_to_phys(page) + offset;
-}
-
-static void nios2_dma_unmap_page(struct device *dev, dma_addr_t dma_address,
- size_t size, enum dma_data_direction direction,
- unsigned long attrs)
-{
- if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
- __dma_sync_for_cpu(phys_to_virt(dma_address), size, direction);
-}
-
-static void nios2_dma_unmap_sg(struct device *dev, struct scatterlist *sg,
- int nhwentries, enum dma_data_direction direction,
- unsigned long attrs)
-{
- void *addr;
- int i;
-
- if (direction == DMA_TO_DEVICE)
- return;
-
- if (attrs & DMA_ATTR_SKIP_CPU_SYNC)
- return;
-
- for_each_sg(sg, sg, nhwentries, i) {
- addr = sg_virt(sg);
- if (addr)
- __dma_sync_for_cpu(addr, sg->length, direction);
- }
-}
-
-static void nios2_dma_sync_single_for_cpu(struct device *dev,
- dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction)
-{
- __dma_sync_for_cpu(phys_to_virt(dma_handle), size, direction);
-}
-
-static void nios2_dma_sync_single_for_device(struct device *dev,
- dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction)
-{
- __dma_sync_for_device(phys_to_virt(dma_handle), size, direction);
-}
-
-static void nios2_dma_sync_sg_for_cpu(struct device *dev,
- struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- int i;
-
- /* Make sure that gcc doesn't leave the empty loop body. */
- for_each_sg(sg, sg, nelems, i)
- __dma_sync_for_cpu(sg_virt(sg), sg->length, direction);
-}
-
-static void nios2_dma_sync_sg_for_device(struct device *dev,
- struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- int i;
-
- /* Make sure that gcc doesn't leave the empty loop body. */
- for_each_sg(sg, sg, nelems, i)
- __dma_sync_for_device(sg_virt(sg), sg->length, direction);
-
-}
-
-const struct dma_map_ops nios2_dma_ops = {
- .alloc = nios2_dma_alloc,
- .free = nios2_dma_free,
- .map_page = nios2_dma_map_page,
- .unmap_page = nios2_dma_unmap_page,
- .map_sg = nios2_dma_map_sg,
- .unmap_sg = nios2_dma_unmap_sg,
- .sync_single_for_device = nios2_dma_sync_single_for_device,
- .sync_single_for_cpu = nios2_dma_sync_single_for_cpu,
- .sync_sg_for_cpu = nios2_dma_sync_sg_for_cpu,
- .sync_sg_for_device = nios2_dma_sync_sg_for_device,
-};
-EXPORT_SYMBOL(nios2_dma_ops);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-24 14:37:39 +0300