u-boot.git/arch/riscv/include/asm/dma-mapping.h, branch master Unnamed repository; edit this file 'description' to name the repository. riscv: Remove common.h usage 2023-10-24T20:34:45+00:00 Tom Rini trini@konsulko.com 2023-10-12T23:03:59+00:00 0b9441ae76db88b6871adc31b7e59355286f2847 We can remove common.h from most cases of the code here, and only a few places need an additional header instead. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Rick Chen <rick@andestech.com> 
We can remove common.h from most cases of the code here, and only a few
places need an additional header instead.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Rick Chen <rick@andestech.com>
dma-mapping: move dma_map_(un)single() to <linux/dma-mapping.h> 2020-02-19T13:27:30+00:00 Masahiro Yamada yamada.masahiro@socionext.com 2020-02-14T07:40:19+00:00 9d86b89c590832c9bcb1c69d5ccdecdf731f97ae The implementation of dma_map_single() and dma_unmap_single() is exactly the same for all the architectures that support them. Factor them out to <linux/dma-mapping.h>, and make all drivers to include <linux/dma-mapping.h> instead of <asm/dma-mapping.h>. If we need to differentiate them for some architectures, we can move the generic definitions to <asm-generic/dma-mapping.h>. Add some comments to the helpers. The concept is quite similar to the DMA-API of Linux kernel. Drivers are agnostic about what is going on behind the scene. Just call dma_map_single() before the DMA, and dma_unmap_single() after it. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> 
The implementation of dma_map_single() and dma_unmap_single() is
exactly the same for all the architectures that support them.

Factor them out to <linux/dma-mapping.h>, and make all drivers to
include <linux/dma-mapping.h> instead of <asm/dma-mapping.h>.

If we need to differentiate them for some architectures, we can
move the generic definitions to <asm-generic/dma-mapping.h>.

Add some comments to the helpers. The concept is quite similar to
the DMA-API of Linux kernel. Drivers are agnostic about what is
going on behind the scene. Just call dma_map_single() before the
DMA, and dma_unmap_single() after it.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
dma-mapping: fix the prototype of dma_unmap_single() 2020-02-19T13:27:30+00:00 Masahiro Yamada yamada.masahiro@socionext.com 2020-02-14T07:40:18+00:00 950c5968672a22a65790534234d1106bd1303652 dma_unmap_single() takes the dma address, not virtual address. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> 
dma_unmap_single() takes the dma address, not virtual address.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
dma-mapping: fix the prototype of dma_map_single() 2020-02-19T13:27:30+00:00 Masahiro Yamada yamada.masahiro@socionext.com 2020-02-14T07:40:17+00:00 c22c0dbd7d3bb7ce47779b757d567d2e7746744b Make dma_map_single() return the dma address, and remove the pointless volatile. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> 
Make dma_map_single() return the dma address, and remove the
pointless volatile.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
asm: dma-mapping.h: Fix dma mapping functions 2020-01-25T17:04:36+00:00 Vignesh Raghavendra vigneshr@ti.com 2020-01-16T08:53:45+00:00 c0a5a81f746f18a5d8ed4bf2c062d03e3519ab5e Subsystems such as USB expect dma_map_single() and dma_unmap_single() to do dcache flush/invalidate operations as required. For example, see see drivers/usb/gadget/udc/udc-core.c::usb_gadget_map_request(). Currently drivers do this locally, (see drivers/usb/dwc3/ep0.c, drivers/mtd/nand/raw/denali.c etc..) Update arch specific dma_map_single() and dma_unmap_single() APIs to do cache flush/invalidate operations, so that drivers need not implement them locally. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Rick Chen <rick@andestech.com> 
Subsystems such as USB expect dma_map_single() and dma_unmap_single() to
do dcache flush/invalidate operations as required. For example, see
see drivers/usb/gadget/udc/udc-core.c::usb_gadget_map_request().
Currently drivers do this locally, (see drivers/usb/dwc3/ep0.c,
drivers/mtd/nand/raw/denali.c etc..)
Update arch specific dma_map_single() and dma_unmap_single() APIs to do
cache flush/invalidate  operations, so that drivers need not implement
them locally.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Rick Chen <rick@andestech.com>
riscv: Add asm/dma-mapping.h for DMA mappings 2019-02-27T01:12:33+00:00 Anup Patel Anup.Patel@wdc.com 2019-02-25T08:14:17+00:00 70b8562dcf03461cd01bcacab7520c7d1485176c This patch adds asm/dma-mapping.h for Linux-like DMA mappings APIs required by some of the drivers (such as, Cadance MACB Ethernet driver). Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Alexander Graf <agraf@suse.de> Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de> 
This patch adds asm/dma-mapping.h for Linux-like DMA mappings
APIs required by some of the drivers (such as, Cadance MACB
Ethernet driver).

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>