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Commit 020f90f2 authored by Mitchel Humpherys's avatar Mitchel Humpherys Committed by Patrick Daly
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iommu/iommu-debug: Add support for secure domain profiling 



Secure domains do different amounts of work than non-secure domains, so
we need to be able to profile them separately.  Add another debugfs
file, "secure_profiling", that does the same thing as the "profiling"
file.

Change-Id: I6968036bfdcc63449f27336771b3956a2b7754f6
Signed-off-by: default avatarMitchel Humpherys <mitchelh@codeaurora.org>
Signed-off-by: default avatarPatrick Daly <pdaly@codeaurora.org>
parent 679567c9

drivers/iommu/iommu-debug.c

+44 −2
Original line number Diff line number Diff line
@@ -455,7 +455,8 @@ static const char * const _size_to_string(unsigned long size) 
	return "unknown size, please add to _size_to_string";

}



static void iommu_debug_device_profiling(struct seq_file *s, struct device *dev)

static void iommu_debug_device_profiling(struct seq_file *s, struct device *dev,

					 bool secure)

{

	unsigned long sizes[] = { SZ_4K, SZ_64K, SZ_2M, SZ_1M * 12,

				  SZ_1M * 20, 0 };
@@ -478,6 +479,17 @@ static void iommu_debug_device_profiling(struct seq_file *s, struct device *dev) 
		goto out_domain_free;

	}



	if (secure) {

		int secure_vmid = VMID_CP_PIXEL;



		if (iommu_domain_set_attr(domain, DOMAIN_ATTR_SECURE_VMID,

					  &secure_vmid)) {

			seq_printf(s, "Couldn't set secure vmid to %d\n",

				   secure_vmid);

			goto out_domain_free;

		}

	}



	if (iommu_attach_device(domain, dev)) {

		seq_puts(s,

			 "Couldn't attach new domain to device. Is it already attached?\n");
@@ -571,7 +583,7 @@ static int iommu_debug_profiling_show(struct seq_file *s, void *ignored) 
{

	struct iommu_debug_device *ddev = s->private;



	iommu_debug_device_profiling(s, ddev->dev);

	iommu_debug_device_profiling(s, ddev->dev, false);



	return 0;

}
@@ -588,6 +600,29 @@ static const struct file_operations iommu_debug_profiling_fops = { 
	.release = single_release,

};



static int iommu_debug_secure_profiling_show(struct seq_file *s, void *ignored)

{

	struct iommu_debug_device *ddev = s->private;



	iommu_debug_device_profiling(s, ddev->dev, true);



	return 0;

}



static int iommu_debug_secure_profiling_open(struct inode *inode,

					     struct file *file)

{

	return single_open(file, iommu_debug_secure_profiling_show,

			   inode->i_private);

}



static const struct file_operations iommu_debug_secure_profiling_fops = {

	.open	 = iommu_debug_secure_profiling_open,

	.read	 = seq_read,

	.llseek	 = seq_lseek,

	.release = single_release,

};



static int iommu_debug_attach_do_attach(struct iommu_debug_device *ddev,

					int val, bool is_secure)

{
@@ -952,6 +987,13 @@ static int snarf_iommu_devices(struct device *dev, void *ignored) 
		goto err_rmdir;

	}



	if (!debugfs_create_file("secure_profiling", S_IRUSR, dir, ddev,

				 &iommu_debug_secure_profiling_fops)) {

		pr_err("Couldn't create iommu/devices/%s/secure_profiling debugfs file\n",

		       dev_name(dev));

		goto err_rmdir;

	}



	if (!debugfs_create_file("attach", S_IRUSR, dir, ddev,

				 &iommu_debug_attach_fops)) {

		pr_err("Couldn't create iommu/devices/%s/attach debugfs file\n",