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crypto: ux500/hash - Set DMA configuration though dma_slave_config()

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The DMA controller currently takes configuration information from
information passed though dma_channel_request(), but it shouldn't.
Using the API, the DMA channel should only be configured during
a dma_slave_config() call.

Cc: David S. Miller <davem@davemloft.net>
Cc: Andreas Westin <andreas.westin@stericsson.com>
Cc: linux-crypto@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Lee Jones 2013-05-15 10:51:36 +01:00 committed by Linus Walleij
parent 58ba67dd36
commit 85c5632d1f
2 changed files with 14 additions and 1 deletions
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5
drivers/crypto/ux500/hash/hash_alg.h
View File

@ -11,6 +11,7 @@
#include <linux/bitops.h>
#define HASH_BLOCK_SIZE 64
#define HASH_DMA_FIFO 4
#define HASH_DMA_ALIGN_SIZE 4
#define HASH_DMA_PERFORMANCE_MIN_SIZE 1024
#define HASH_BYTES_PER_WORD 4
@ -347,7 +348,8 @@ struct hash_req_ctx {
/**
* struct hash_device_data - structure for a hash device.
* @base: Pointer to the hardware base address.
* @base: Pointer to virtual base address of the hash device.
* @phybase: Pointer to physical memory location of the hash device.
* @list_node: For inclusion in klist.
* @dev: Pointer to the device dev structure.
* @ctx_lock: Spinlock for current_ctx.
@ -361,6 +363,7 @@ struct hash_req_ctx {
*/
struct hash_device_data {
struct hash_register __iomem *base;
phys_addr_t phybase;
struct klist_node list_node;
struct device *dev;
struct spinlock ctx_lock;

10
drivers/crypto/ux500/hash/hash_core.c
View File

@ -122,6 +122,13 @@ static void hash_dma_setup_channel(struct hash_device_data *device_data,
struct device *dev)
{
struct hash_platform_data *platform_data = dev->platform_data;
struct dma_slave_config conf = {
.direction = DMA_MEM_TO_DEV,
.dst_addr = device_data->phybase + HASH_DMA_FIFO,
.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
.dst_maxburst = 16,
};
dma_cap_zero(device_data->dma.mask);
dma_cap_set(DMA_SLAVE, device_data->dma.mask);
@ -131,6 +138,8 @@ static void hash_dma_setup_channel(struct hash_device_data *device_data,
platform_data->dma_filter,
device_data->dma.cfg_mem2hash);
dmaengine_slave_config(device_data->dma.chan_mem2hash, &conf);
init_completion(&device_data->dma.complete);
}
@ -1699,6 +1708,7 @@ static int ux500_hash_probe(struct platform_device *pdev)
goto out_kfree;
}
device_data->phybase = res->start;
device_data->base = ioremap(res->start, resource_size(res));
if (!device_data->base) {
dev_err(dev, "[%s] ioremap() failed!",