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Commit a11719cc authored by Mitchel Humpherys's avatar Mitchel Humpherys
Browse files

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



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: default avatarMitchel Humpherys <mitchelh@codeaurora.org>
parent 0c052e25

drivers/iommu/iommu-debug.c

+11 −0
Original line number Diff line number Diff line
@@ -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;

}