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-rw-r--r--meta-rcar-gen3-adas/recipes-kernel/kernel-module-mmngr/files/0003-kernelheap-cached-support.patch102
1 files changed, 102 insertions, 0 deletions
diff --git a/meta-rcar-gen3-adas/recipes-kernel/kernel-module-mmngr/files/0003-kernelheap-cached-support.patch b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-mmngr/files/0003-kernelheap-cached-support.patch
new file mode 100644
index 0000000..171eac1
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/kernel-module-mmngr/files/0003-kernelheap-cached-support.patch
@@ -0,0 +1,102 @@
+From d20b6893f3d22abd12ffb5421292fcee4820de33 Mon Sep 17 00:00:00 2001
+From: Andrey Dolnikov <andrey.dolnikov@cogentembedded.com>
+Date: Wed, 14 Feb 2018 17:12:01 +0300
+Subject: [PATCH] mmngr: Add kernelheap cached buffers support.
+
+---
+ .../mmngr/mmngr-module/files/mmngr/drv/mmngr_drv.c | 20 ++++++++++++++++----
+ .../files/mmngr/include/mmngr_private_cmn.h | 7 +++++++
+ .../files/mmngr/include/mmngr_public_cmn.h | 1 +
+ 4 files changed, 29 insertions(+), 4 deletions(-)
+
+diff --git a/mmngr_drv/mmngr/mmngr-module/files/mmngr/drv/mmngr_drv.c b/mmngr_drv/mmngr/mmngr-module/files/mmngr/drv/mmngr_drv.c
+index cd797f5..c38329d 100644
+--- a/mmngr_drv/mmngr/mmngr-module/files/mmngr/drv/mmngr_drv.c
++++ b/mmngr_drv/mmngr/mmngr-module/files/mmngr/drv/mmngr_drv.c
+@@ -736,7 +736,7 @@ static int close(struct inode *inode, struct file *file)
+ int entry = 0;
+
+ if (p) {
+- if ((p->flag == MM_KERNELHEAP)
++ if ((p->flag == MM_KERNELHEAP || p->flag == MM_KERNELHEAP_CACHED)
+ && (p->kernel_virt_addr != 0)) {
+ pr_err("MMD close kernelheap\n");
+ mm_dev = mm_drvdata->mm_dev;
+@@ -779,6 +779,7 @@ 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 device *mm_dev;
+
+ mm_dev = mm_drvdata->mm_dev;
+@@ -830,6 +831,14 @@ static long ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+ goto exit;
+ }
+ 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);
++ 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);
++ break;
+ default:
+ pr_err("MMD CMD EFAULT\n");
+ ret = -EFAULT;
+@@ -954,9 +963,12 @@ static int mmap(struct file *filp, struct vm_area_struct *vma)
+ off += start;
+ vma->vm_pgoff = off >> PAGE_SHIFT;
+
+- vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+-
+- vma->vm_flags |= (VM_IO | VM_DONTEXPAND | VM_DONTDUMP);
++ if (p->flag != MM_KERNELHEAP_CACHED) {
++ vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
++ vma->vm_flags |= (VM_IO | VM_DONTEXPAND | VM_DONTDUMP);
++ } else {
++ vma->vm_flags |= (VM_DONTEXPAND | VM_DONTDUMP);
++ }
+
+ if (remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+ vma->vm_end - vma->vm_start, vma->vm_page_prot))
+diff --git a/mmngr_drv/mmngr/mmngr-module/files/mmngr/include/mmngr_private_cmn.h b/mmngr_drv/mmngr/mmngr-module/files/mmngr/include/mmngr_private_cmn.h
+index f731ab6..5f137c6 100644
+--- a/mmngr_drv/mmngr/mmngr-module/files/mmngr/include/mmngr_private_cmn.h
++++ b/mmngr_drv/mmngr/mmngr-module/files/mmngr/include/mmngr_private_cmn.h
+@@ -72,6 +72,11 @@ struct MM_PARAM {
+ unsigned int flag;
+ };
+
++struct MM_CACHE_PARAM {
++ size_t offset;
++ size_t len;
++};
++
+ #define MM_IOC_MAGIC 'm'
+ #define MM_IOC_ALLOC _IOWR(MM_IOC_MAGIC, 0, struct MM_PARAM)
+ #define MM_IOC_FREE _IOWR(MM_IOC_MAGIC, 1, struct MM_PARAM)
+@@ -80,5 +85,7 @@ struct MM_PARAM {
+ #define MM_IOC_ALLOC_CO _IOWR(MM_IOC_MAGIC, 4, struct MM_PARAM)
+ #define MM_IOC_FREE_CO _IOWR(MM_IOC_MAGIC, 5, struct MM_PARAM)
+ #define MM_IOC_SHARE _IOWR(MM_IOC_MAGIC, 6, struct MM_PARAM)
++#define MM_IOC_FLUSH _IOWR(MM_IOC_MAGIC, 7, struct MM_CACHE_PARAM)
++#define MM_IOC_INVAL _IOWR(MM_IOC_MAGIC, 8, struct MM_CACHE_PARAM)
+
+ #endif /* __MMNGR_PRIVATE_CMN_H__ */
+diff --git a/mmngr_drv/mmngr/mmngr-module/files/mmngr/include/mmngr_public_cmn.h b/mmngr_drv/mmngr/mmngr-module/files/mmngr/include/mmngr_public_cmn.h
+index dce81a1..a668019 100644
+--- a/mmngr_drv/mmngr/mmngr-module/files/mmngr/include/mmngr_public_cmn.h
++++ b/mmngr_drv/mmngr/mmngr-module/files/mmngr/include/mmngr_public_cmn.h
+@@ -62,6 +62,7 @@
+ #define __MMNGR_PUBLIC_CMN_H__
+
+ #define MM_KERNELHEAP 0
++#define MM_KERNELHEAP_CACHED 5
+ #define MM_CARVEOUT 1
+ #define MM_CARVEOUT_SSP 3
+ #define MM_CARVEOUT_LOSSY 4
+--
+2.7.4
+