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Signed-off-by: Heinrich Toews <ht@twx-software.de>
This commit is contained in:
Heinrich Toews
2025-11-17 07:41:21 +01:00
parent df60c83b96
commit 19f3200ea3
2 changed files with 28 additions and 4 deletions
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arch/arm64/boot/dts/ti/k3-am623-pfc-750-84xx-wosm.dtsi
+2 -2
View File
@@ -81,10 +81,10 @@
/*
* FSS Memory Region: External Memory Space (Region 3)
* OSPI EVERSPIN MRAM
* OSPI EVERSPIN MRAM em008lxo (8Mb)
*
*/
reg = <0x05 0x00000000 0x01 0x00000000>;
reg = <0x05 0x00000000 0x00 0x00100000>;
};
};
drivers/uio/uio.c
+26 -2
View File
@@ -745,10 +745,18 @@ static int uio_mmap_physical(struct vm_area_struct *vma)
pr_info("TWx: %s:%d\n", __func__, __LINE__);
vma->vm_ops = &uio_physical_vm_ops;
if (idev->info->mem[mi].memtype == UIO_MEM_PHYS)
if (idev->info->mem[mi].memtype == UIO_MEM_PHYS) {
pr_info("TWx: %s:%d pgprot_noncached() config.\n",
__func__, __LINE__);
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
}
pr_info("TWx: %s:%d\n", __func__, __LINE__);
pr_info("TWx: %s:%d vma->vm_start 0x%lx mem->addr 0x%llx pfn 0x%llx size 0x%lx.\n",
__func__, __LINE__,
vma->vm_start,
mem->addr,
mem->addr >> PAGE_SHIFT,
vma->vm_end - vma->vm_start);
/*
* We cannot use the vm_iomap_memory() helper here,
* because vma->vm_pgoff is the map index we looked
@@ -763,6 +771,22 @@ static int uio_mmap_physical(struct vm_area_struct *vma)
mem->addr >> PAGE_SHIFT,
vma->vm_end - vma->vm_start,
vma->vm_page_prot);
#if 0
/**
* remap_pfn_range - remap kernel memory to userspace
* @vma: user vma to map to
* @addr: target page aligned user address to start at
* @pfn: page frame number of kernel physical memory address
* @size: size of mapping area
* @prot: page protection flags for this mapping
*
* Note: this is only safe if the mm semaphore is held when called.
*
* Return: %0 on success, negative error code otherwise.
*/
int remap_pfn_range(struct vm_area_struct *vma, unsigned long addr,
unsigned long pfn, unsigned long size, pgprot_t prot)
#endif
}
static int uio_mmap(struct file *filep, struct vm_area_struct *vma)