mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 09:12:39 +00:00
53ab9865c2
Signed-off-by: David Bauer <mail@david-bauer.net> [refreshed] Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com> * Sync the patches with the changes done for kernel 4.19 * Use KERNEL_TESTING_PATCHVER * Refresh the configuration * Fix multiple compile bugs in the patches * Only add own ag71xx files for kernel 4.19 and use upstream version for 5.4. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
100 lines
3.3 KiB
Diff
100 lines
3.3 KiB
Diff
From 3913dbe4b3256ead342572f7aba726a60ab5fd43 Mon Sep 17 00:00:00 2001
|
|
Message-Id: <3913dbe4b3256ead342572f7aba726a60ab5fd43.1577917078.git.chunkeey@gmail.com>
|
|
From: Christian Lamparter <chunkeey@gmail.com>
|
|
Date: Wed, 1 Jan 2020 22:28:28 +0100
|
|
Subject: [PATCH 1/2] crypto: crypto4xx - reduce memory fragmentation
|
|
To: linux-crypto@vger.kernel.org
|
|
Cc: Herbert Xu <herbert@gondor.apana.org.au>
|
|
|
|
With recent kernels (>5.2), the driver fails to probe, as the
|
|
allocation of the driver's scatter buffer fails with -ENOMEM.
|
|
|
|
This happens in crypto4xx_build_sdr(). Where the driver tries
|
|
to get 512KiB (=PPC4XX_SD_BUFFER_SIZE * PPC4XX_NUM_SD) of
|
|
continuous memory. This big chunk is by design, since the driver
|
|
uses this circumstance in the crypto4xx_copy_pkt_to_dst() to
|
|
its advantage:
|
|
"all scatter-buffers are all neatly organized in one big
|
|
continuous ringbuffer; So scatterwalk_map_and_copy() can be
|
|
instructed to copy a range of buffers in one go."
|
|
|
|
The PowerPC arch does not have support for DMA_CMA. Hence,
|
|
this patch reorganizes the order in which the memory
|
|
allocations are done. Since the driver itself is responsible
|
|
for some of the issues.
|
|
|
|
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
|
|
---
|
|
drivers/crypto/amcc/crypto4xx_core.c | 27 +++++++++++++--------------
|
|
1 file changed, 13 insertions(+), 14 deletions(-)
|
|
|
|
--- a/drivers/crypto/amcc/crypto4xx_core.c
|
|
+++ b/drivers/crypto/amcc/crypto4xx_core.c
|
|
@@ -286,7 +286,8 @@ static u32 crypto4xx_build_gdr(struct cr
|
|
|
|
static inline void crypto4xx_destroy_gdr(struct crypto4xx_device *dev)
|
|
{
|
|
- dma_free_coherent(dev->core_dev->device,
|
|
+ if (dev->gdr)
|
|
+ dma_free_coherent(dev->core_dev->device,
|
|
sizeof(struct ce_gd) * PPC4XX_NUM_GD,
|
|
dev->gdr, dev->gdr_pa);
|
|
}
|
|
@@ -354,13 +355,6 @@ static u32 crypto4xx_build_sdr(struct cr
|
|
{
|
|
int i;
|
|
|
|
- /* alloc memory for scatter descriptor ring */
|
|
- dev->sdr = dma_alloc_coherent(dev->core_dev->device,
|
|
- sizeof(struct ce_sd) * PPC4XX_NUM_SD,
|
|
- &dev->sdr_pa, GFP_ATOMIC);
|
|
- if (!dev->sdr)
|
|
- return -ENOMEM;
|
|
-
|
|
dev->scatter_buffer_va =
|
|
dma_alloc_coherent(dev->core_dev->device,
|
|
PPC4XX_SD_BUFFER_SIZE * PPC4XX_NUM_SD,
|
|
@@ -368,6 +362,13 @@ static u32 crypto4xx_build_sdr(struct cr
|
|
if (!dev->scatter_buffer_va)
|
|
return -ENOMEM;
|
|
|
|
+ /* alloc memory for scatter descriptor ring */
|
|
+ dev->sdr = dma_alloc_coherent(dev->core_dev->device,
|
|
+ sizeof(struct ce_sd) * PPC4XX_NUM_SD,
|
|
+ &dev->sdr_pa, GFP_ATOMIC);
|
|
+ if (!dev->sdr)
|
|
+ return -ENOMEM;
|
|
+
|
|
for (i = 0; i < PPC4XX_NUM_SD; i++) {
|
|
dev->sdr[i].ptr = dev->scatter_buffer_pa +
|
|
PPC4XX_SD_BUFFER_SIZE * i;
|
|
@@ -1439,16 +1440,15 @@ static int crypto4xx_probe(struct platfo
|
|
spin_lock_init(&core_dev->lock);
|
|
INIT_LIST_HEAD(&core_dev->dev->alg_list);
|
|
ratelimit_default_init(&core_dev->dev->aead_ratelimit);
|
|
+ rc = crypto4xx_build_sdr(core_dev->dev);
|
|
+ if (rc)
|
|
+ goto err_build_sdr;
|
|
rc = crypto4xx_build_pdr(core_dev->dev);
|
|
if (rc)
|
|
- goto err_build_pdr;
|
|
+ goto err_build_sdr;
|
|
|
|
rc = crypto4xx_build_gdr(core_dev->dev);
|
|
if (rc)
|
|
- goto err_build_pdr;
|
|
-
|
|
- rc = crypto4xx_build_sdr(core_dev->dev);
|
|
- if (rc)
|
|
goto err_build_sdr;
|
|
|
|
/* Init tasklet for bottom half processing */
|
|
@@ -1493,7 +1493,6 @@ err_iomap:
|
|
err_build_sdr:
|
|
crypto4xx_destroy_sdr(core_dev->dev);
|
|
crypto4xx_destroy_gdr(core_dev->dev);
|
|
-err_build_pdr:
|
|
crypto4xx_destroy_pdr(core_dev->dev);
|
|
kfree(core_dev->dev);
|
|
err_alloc_dev:
|