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Apply fix to cache flush and secured buffer for RZ/V #8

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8a22031
mmngr_drv: mmngr: Supports problem where cache flush is not implemented
canhdao2896 Dec 20, 2023
dc9e13e
mmngr_drv: mmngrbuf: Add virtual mapping for the buffer into kernel a…
canhdao2896 Dec 20, 2023
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14 changes: 7 additions & 7 deletions mmngr_drv/mmngr/mmngr-module/files/mmngr/drv/mmngr_drv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -910,7 +910,7 @@ static long ioctl(struct file *file, unsigned int cmd, unsigned long arg)
int ercd;
int ret;
struct MM_PARAM *p = file->private_data;
struct MM_CACHE_PARAM *cachep;
struct MM_CACHE_PARAM cachep;
struct device *mm_dev;

mm_dev = mm_drvdata->mm_dev;
Expand Down Expand Up @@ -963,14 +963,14 @@ static long ioctl(struct file *file, unsigned int cmd, unsigned long arg)
}
break;
case MM_IOC_FLUSH:
cachep = (struct MM_CACHE_PARAM *)arg;
dma_sync_single_for_device(mm_dev, p->hard_addr + cachep->offset,
cachep->len, DMA_FROM_DEVICE);
copy_from_user(&cachep, arg, sizeof(struct MM_CACHE_PARAM));
dma_sync_single_for_device(mm_dev, p->hard_addr + cachep.offset,
cachep.len, DMA_FROM_DEVICE);
break;
case MM_IOC_INVAL:
cachep = (struct MM_CACHE_PARAM *)arg;
dma_sync_single_for_cpu(mm_dev, p->hard_addr + cachep->offset,
cachep->len, DMA_TO_DEVICE);
copy_from_user(&cachep, arg, sizeof(struct MM_CACHE_PARAM));
dma_sync_single_for_cpu(mm_dev, p->hard_addr + cachep.offset,
cachep.len, DMA_TO_DEVICE);
break;
default:
pr_err("%s MMD CMD EFAULT\n", __func__);
Expand Down
4 changes: 3 additions & 1 deletion mmngr_drv/mmngrbuf/mmngrbuf-module/files/mmngrbuf/drv/mmngr_buf_drv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -307,7 +307,9 @@ static int dmabuf_mmap(struct dma_buf *buf, struct vm_area_struct *vma)

static void *dmabuf_vmap(struct dma_buf *buf)
{
return NULL;
struct MM_BUF_PRIVATE *priv = buf->priv;

return phys_to_virt(priv->hard_addr);
}

static void dmabuf_vunmap(struct dma_buf *buf, void *vaddr)
Expand Down