evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

iommu/iommu-debug: Show secure VMID in attach info

Browse source 
It can be useful to know a domain's secure VMID value.  Add this
information to the attach info debugfs file.

Change-Id: Ic8a73000b8337639f95376b13ef58a0e2a089dde
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
This commit is contained in:
Mitchel Humpherys 2015-07-30 19:25:54 -07:00 • committed by David Keitel
parent 880ae03739
commit 75cd28f90d
1 changed files with 11 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
drivers/iommu/iommu-debug.c
View file

@ -21,6 +21,7 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <soc/qcom/secure_buffer.h>
#ifdef CONFIG_IOMMU_DEBUG_TRACKING
@ -40,6 +41,7 @@ static int iommu_debug_attachment_info_show(struct seq_file *s, void *ignored)
struct iommu_debug_attachment *attach = s->private;
phys_addr_t pt_phys;
int coherent_htw_disable;
int secure_vmid;
seq_printf(s, "Domain: 0x%p\n", attach->domain);
if (iommu_domain_get_attr(attach->domain, DOMAIN_ATTR_PT_BASE_ADDR,
@ -60,6 +62,15 @@ static int iommu_debug_attachment_info_show(struct seq_file *s, void *ignored)
else
seq_printf(s, "%d\n", coherent_htw_disable);
seq_puts(s, "SECURE_VMID: ");
if (iommu_domain_get_attr(attach->domain,
DOMAIN_ATTR_SECURE_VMID,
&secure_vmid))
seq_puts(s, "(Unknown)\n");
else
seq_printf(s, "%s (0x%x)\n",
msm_secure_vmid_to_string(secure_vmid), secure_vmid);
return 0;
}