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Commit 7aa2227a authored by Oded Gabbay's avatar Oded Gabbay
Browse files

habanalabs: initialize MMU context for driver 



This patch initializes the MMU structures for the kernel context. This is
needed before we can configure mappings for the kernel context.

Signed-off-by: default avatarOded Gabbay <oded.gabbay@gmail.com>
parent 37d68ce5

drivers/misc/habanalabs/context.c

+7 −0
Original line number Diff line number Diff line
@@ -36,6 +36,8 @@ static void hl_ctx_fini(struct hl_ctx *ctx) 


		hl_vm_ctx_fini(ctx);

		hl_asid_free(hdev, ctx->asid);

	} else {

		hl_mmu_ctx_fini(ctx);

	}

}
@@ -119,6 +121,11 @@ int hl_ctx_init(struct hl_device *hdev, struct hl_ctx *ctx, bool is_kernel_ctx) 


	if (is_kernel_ctx) {

		ctx->asid = HL_KERNEL_ASID_ID; /* KMD gets ASID 0 */

		rc = hl_mmu_ctx_init(ctx);

		if (rc) {

			dev_err(hdev->dev, "Failed to init mmu ctx module\n");

			goto mem_ctx_err;

		}

	} else {

		ctx->asid = hl_asid_alloc(hdev);

		if (!ctx->asid) {

drivers/misc/habanalabs/mmu.c

+6 −4
Original line number Diff line number Diff line
@@ -241,8 +241,9 @@ static int dram_default_mapping_init(struct hl_ctx *ctx) 
		hop2_pte_addr, hop3_pte_addr, pte_val;

	int rc, i, j, hop3_allocated = 0;



	if (!hdev->dram_supports_virtual_memory ||

			!hdev->dram_default_page_mapping)

	if ((!hdev->dram_supports_virtual_memory) ||

			(!hdev->dram_default_page_mapping) ||

			(ctx->asid == HL_KERNEL_ASID_ID))

		return 0;



	num_of_hop3 = prop->dram_size_for_default_page_mapping;
@@ -340,8 +341,9 @@ static void dram_default_mapping_fini(struct hl_ctx *ctx) 
		hop2_pte_addr, hop3_pte_addr;

	int i, j;



	if (!hdev->dram_supports_virtual_memory ||

			!hdev->dram_default_page_mapping)

	if ((!hdev->dram_supports_virtual_memory) ||

			(!hdev->dram_default_page_mapping) ||

			(ctx->asid == HL_KERNEL_ASID_ID))

		return;



	num_of_hop3 = prop->dram_size_for_default_page_mapping;