Commit 405e2f12 authored by Suravee Suthikulpanit's avatar Suravee Suthikulpanit Committed by Joerg Roedel
Browse files

iommu/amd: Add support for page response 



This generates AMD IOMMU COMPLETE_PPR_REQUEST for the specified device
with the specified PRI Response Code.

Also update amd_iommu_complete_ppr() to accept 'struct device' instead
of pdev as it just need device reference.

Signed-off-by: default avatarSuravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: default avatarWei Huang <wei.huang2@amd.com>
Co-developed-by: default avatarVasant Hegde <vasant.hegde@amd.com>
Signed-off-by: default avatarVasant Hegde <vasant.hegde@amd.com>
Reviewed-by: default avatarJason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20240418103400.6229-11-vasant.hegde@amd.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 61928bab

drivers/iommu/amd/amd_iommu.h

+3 −2
Original line number Diff line number Diff line
@@ -49,6 +49,8 @@ bool amd_iommu_pasid_supported(void); 
/* IOPF */

int amd_iommu_iopf_init(struct amd_iommu *iommu);

void amd_iommu_iopf_uninit(struct amd_iommu *iommu);

void amd_iommu_page_response(struct device *dev, struct iopf_fault *evt,

			     struct iommu_page_response *resp);



/* GCR3 setup */

int amd_iommu_set_gcr3(struct iommu_dev_data *dev_data,
@@ -60,8 +62,7 @@ int __init amd_iommu_alloc_ppr_log(struct amd_iommu *iommu); 
void __init amd_iommu_free_ppr_log(struct amd_iommu *iommu);

void amd_iommu_enable_ppr_log(struct amd_iommu *iommu);

void amd_iommu_poll_ppr_log(struct amd_iommu *iommu);

int amd_iommu_complete_ppr(struct pci_dev *pdev, u32 pasid,

			   int status, int tag);

int amd_iommu_complete_ppr(struct device *dev, u32 pasid, int status, int tag);



/*

 * This function flushes all internal caches of

drivers/iommu/amd/iommu.c

+4 −4
Original line number Diff line number Diff line
@@ -1628,15 +1628,14 @@ void amd_iommu_domain_update(struct protection_domain *domain) 
	amd_iommu_domain_flush_all(domain);

}



int amd_iommu_complete_ppr(struct pci_dev *pdev, u32 pasid,

			   int status, int tag)

int amd_iommu_complete_ppr(struct device *dev, u32 pasid, int status, int tag)

{

	struct iommu_dev_data *dev_data;

	struct amd_iommu *iommu;

	struct iommu_cmd cmd;



	dev_data = dev_iommu_priv_get(&pdev->dev);

	iommu    = get_amd_iommu_from_dev(&pdev->dev);

	dev_data = dev_iommu_priv_get(dev);

	iommu    = get_amd_iommu_from_dev(dev);



	build_complete_ppr(&cmd, dev_data->devid, pasid, status,

			   tag, dev_data->pri_tlp);
@@ -2852,6 +2851,7 @@ const struct iommu_ops amd_iommu_ops = { 
	.def_domain_type = amd_iommu_def_domain_type,

	.dev_enable_feat = amd_iommu_dev_enable_feature,

	.dev_disable_feat = amd_iommu_dev_disable_feature,

	.page_response = amd_iommu_page_response,

	.default_domain_ops = &(const struct iommu_domain_ops) {

		.attach_dev	= amd_iommu_attach_device,

		.map_pages	= amd_iommu_map_pages,

drivers/iommu/amd/ppr.c

+6 −0
Original line number Diff line number Diff line
@@ -139,3 +139,9 @@ void amd_iommu_iopf_uninit(struct amd_iommu *iommu) 
	iopf_queue_free(iommu->iopf_queue);

	iommu->iopf_queue = NULL;

}



void amd_iommu_page_response(struct device *dev, struct iopf_fault *evt,

			     struct iommu_page_response *resp)

{

	amd_iommu_complete_ppr(dev, resp->pasid, resp->code, resp->grpid);

}