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| // SPDX-License-Identifier: GPL-2.0
| /*
| * Copyright (C) STMicroelectronics SA 2015
| * Author: Hugues Fruchet <hugues.fruchet@st.com> for STMicroelectronics.
| */
|
| #include "delta.h"
| #include "delta-mem.h"
|
| int hw_alloc(struct delta_ctx *ctx, u32 size, const char *name,
| struct delta_buf *buf)
| {
| struct delta_dev *delta = ctx->dev;
| dma_addr_t dma_addr;
| void *addr;
| unsigned long attrs = DMA_ATTR_WRITE_COMBINE;
|
| addr = dma_alloc_attrs(delta->dev, size, &dma_addr,
| GFP_KERNEL | __GFP_NOWARN, attrs);
| if (!addr) {
| dev_err(delta->dev,
| "%s hw_alloc:dma_alloc_coherent failed for %s (size=%d)\n",
| ctx->name, name, size);
| ctx->sys_errors++;
| return -ENOMEM;
| }
|
| buf->size = size;
| buf->paddr = dma_addr;
| buf->vaddr = addr;
| buf->name = name;
| buf->attrs = attrs;
|
| dev_dbg(delta->dev,
| "%s allocate %d bytes of HW memory @(virt=0x%p, phy=0x%pad): %s\n",
| ctx->name, size, buf->vaddr, &buf->paddr, buf->name);
|
| return 0;
| }
|
| void hw_free(struct delta_ctx *ctx, struct delta_buf *buf)
| {
| struct delta_dev *delta = ctx->dev;
|
| dev_dbg(delta->dev,
| "%s free %d bytes of HW memory @(virt=0x%p, phy=0x%pad): %s\n",
| ctx->name, buf->size, buf->vaddr, &buf->paddr, buf->name);
|
| dma_free_attrs(delta->dev, buf->size,
| buf->vaddr, buf->paddr, buf->attrs);
| }
|
|
