From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/drivers/rknpu/rknpu_mem.c | 35 +++++++++++++++++++----------------
1 files changed, 19 insertions(+), 16 deletions(-)
diff --git a/kernel/drivers/rknpu/rknpu_mem.c b/kernel/drivers/rknpu/rknpu_mem.c
index 5242f15..858c21f 100644
--- a/kernel/drivers/rknpu/rknpu_mem.c
+++ b/kernel/drivers/rknpu/rknpu_mem.c
@@ -109,22 +109,27 @@
__LINE__, &phys, length);
}
- page_count = length >> PAGE_SHIFT;
- pages = vmalloc(page_count * sizeof(struct page));
- if (!pages) {
- LOG_ERROR("alloc pages failed\n");
- ret = -ENOMEM;
- goto err_detach_dma_buf;
- }
+ if (args.flags & RKNPU_MEM_KERNEL_MAPPING) {
+ page_count = length >> PAGE_SHIFT;
+ pages = vmalloc(page_count * sizeof(struct page));
+ if (!pages) {
+ LOG_ERROR("alloc pages failed\n");
+ ret = -ENOMEM;
+ goto err_detach_dma_buf;
+ }
- for (i = 0; i < page_count; i++)
- pages[i] = &page[i];
+ for (i = 0; i < page_count; i++)
+ pages[i] = &page[i];
- rknpu_obj->kv_addr = vmap(pages, page_count, VM_MAP, PAGE_KERNEL);
- if (!rknpu_obj->kv_addr) {
- LOG_ERROR("vmap pages addr failed\n");
- ret = -ENOMEM;
- goto err_free_pages;
+ rknpu_obj->kv_addr =
+ vmap(pages, page_count, VM_MAP, PAGE_KERNEL);
+ if (!rknpu_obj->kv_addr) {
+ LOG_ERROR("vmap pages addr failed\n");
+ ret = -ENOMEM;
+ goto err_free_pages;
+ }
+ vfree(pages);
+ pages = NULL;
}
rknpu_obj->size = PAGE_ALIGN(args.size);
@@ -148,8 +153,6 @@
goto err_unmap_kv_addr;
}
- vfree(pages);
- pages = NULL;
dma_buf_unmap_attachment(attachment, table, DMA_BIDIRECTIONAL);
dma_buf_detach(dmabuf, attachment);
--
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