Resign from ->alloc_dma_buf() and use snd_dma_alloc_pages() directly. For data i.e.: base firmware binary transfer, make use of SG allocation to better adapt to memory-limited environment. For BDL descriptor, given its small size this is not required.
Signed-off-by: Cezary Rojewski cezary.rojewski@intel.com --- sound/soc/intel/skylake/skl-sst-cldma.c | 27 +++++++++++++++---------- 1 file changed, 16 insertions(+), 11 deletions(-)
diff --git a/sound/soc/intel/skylake/skl-sst-cldma.c b/sound/soc/intel/skylake/skl-sst-cldma.c index b91f7a652a2b..b0204ea00f07 100644 --- a/sound/soc/intel/skylake/skl-sst-cldma.c +++ b/sound/soc/intel/skylake/skl-sst-cldma.c @@ -11,6 +11,7 @@ #include <linux/io.h> #include <linux/mm.h> #include <linux/delay.h> +#include <sound/hda_register.h> #include "../common/sst-dsp.h" #include "../common/sst-dsp-priv.h"
@@ -79,21 +80,25 @@ static void skl_cldma_setup_bdle(struct sst_dsp *ctx, __le32 **bdlp, int size, int with_ioc) { __le32 *bdl = *bdlp; + int remaining = ctx->cl_dev.bufsize; + int offset = 0;
ctx->cl_dev.frags = 0; - while (size > 0) { - phys_addr_t addr = virt_to_phys(dmab_data->area + - (ctx->cl_dev.frags * ctx->cl_dev.bufsize)); + while (remaining > 0) { + phys_addr_t addr; + int chunk;
+ addr = snd_sgbuf_get_addr(dmab_data, offset); bdl[0] = cpu_to_le32(lower_32_bits(addr)); bdl[1] = cpu_to_le32(upper_32_bits(addr)); + chunk = snd_sgbuf_get_chunk_size(dmab_data, offset, size); + bdl[2] = cpu_to_le32(chunk);
- bdl[2] = cpu_to_le32(ctx->cl_dev.bufsize); - - size -= ctx->cl_dev.bufsize; - bdl[3] = (size || !with_ioc) ? 0 : cpu_to_le32(0x01); + remaining -= chunk; + bdl[3] = (remaining > 0) ? 0 : cpu_to_le32(0x01);
bdl += 4; + offset += chunk; ctx->cl_dev.frags++; } } @@ -338,15 +343,15 @@ int skl_cldma_prepare(struct sst_dsp *ctx) ctx->cl_dev.ops.cl_stop_dma = skl_cldma_stop;
/* Allocate buffer*/ - ret = ctx->dsp_ops.alloc_dma_buf(ctx->dev, - &ctx->cl_dev.dmab_data, ctx->cl_dev.bufsize); + ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV_SG, ctx->dev, ctx->cl_dev.bufsize, + &ctx->cl_dev.dmab_data); if (ret < 0) { dev_err(ctx->dev, "Alloc buffer for base fw failed: %x\n", ret); return ret; } + /* Setup Code loader BDL */ - ret = ctx->dsp_ops.alloc_dma_buf(ctx->dev, - &ctx->cl_dev.dmab_bdl, PAGE_SIZE); + ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, ctx->dev, BDL_SIZE, &ctx->cl_dev.dmab_bdl); if (ret < 0) { dev_err(ctx->dev, "Alloc buffer for blde failed: %x\n", ret); ctx->dsp_ops.free_dma_buf(ctx->dev, &ctx->cl_dev.dmab_data);