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From: Thomas Chou <thomas@wytron.com.tw>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v4] nios2: convert dma_alloc_coherent to use malloc_cache_aligned
Date: Wed, 14 Oct 2015 09:48:21 +0800	[thread overview]
Message-ID: <561DB465.6090902@wytron.com.tw> (raw)
In-Reply-To: <561C4DB1.9090502@wytron.com.tw>

Hi Marek,

>>> On 10/12/2015 06:32 PM, Marek Vasut wrote:
>>>> Wouldn't invalidate_dcache_range() be enough here ? You don't care
>>>> about
>>>> the data in the newly allocated area at this point I guess -- either
>>>> you
>>>> fill them in and then flush, for DMA from CPU to device OR you receive
>>>> data from device to CPU and then you invalidate this buffer again.

Thanks a lot for your suggestion. I added invalidate_dcache_range() 
which will check if the initda instruction is supported by the nios2 cpu.

Best regards,
Thomas

  reply	other threads:[~2015-10-14  1:48 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-05  2:57 [U-Boot] [PATCH] nios2: convert dma mapping to use dm cpu data Thomas Chou
2015-10-06  6:49 ` [U-Boot] [PATCH v2] nios2: convert dma_alloc_coherent to use memalign Thomas Chou
2015-10-08 21:43   ` Marek Vasut
2015-10-09  8:48     ` Thomas Chou
2015-10-09 11:35       ` Thomas Chou
2015-10-09 11:31 ` [U-Boot] [PATCH v3] " Thomas Chou
2015-10-09 14:49   ` Marek Vasut
2015-10-10  5:33     ` Thomas Chou
2015-10-10 18:19       ` Marek Vasut
2015-10-11  1:48         ` Thomas Chou
2015-10-11 12:15           ` Marek Vasut
2015-10-12  5:29 ` [U-Boot] [PATCH v4] nios2: convert dma_alloc_coherent to use malloc_cache_aligned Thomas Chou
2015-10-12 10:32   ` Marek Vasut
2015-10-12 12:55     ` Thomas Chou
2015-10-12 13:46       ` Marek Vasut
2015-10-13  0:17         ` Thomas Chou
2015-10-14  1:48           ` Thomas Chou [this message]
2015-10-16 22:53             ` Marek Vasut
2015-10-16 22:56           ` Marek Vasut
2015-10-17  2:59             ` Thomas Chou
2015-10-17 11:52               ` Marek Vasut
2015-10-19  5:52       ` Albert ARIBAUD
2015-10-19  8:18         ` Thomas Chou
2015-10-19  8:27           ` Albert ARIBAUD
2015-10-14  1:42 ` [U-Boot] [PATCH v5] " Thomas Chou
2015-10-16  8:29 ` [U-Boot] [PATCH v6] " Thomas Chou
2015-10-16 22:58   ` Marek Vasut
2015-10-18 23:46   ` Thomas Chou

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