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Commit 8512bffd authored by Vaibhav Jain's avatar Vaibhav Jain Committed by Michael Ellerman
Browse files

cxl: Set the valid bit in PE for dedicated mode 



Make sure to set the valid-bit in software-state field of the
populated PE. This was earlier missing for dedicated mode AFUs, hence
was causing a PSL freeze when the AFU was activated.

Signed-off-by: default avatarVaibhav Jain <vaibhav@linux.vnet.ibm.com>
Acked-by: default avatarFrederic Barrat <fbarrat@linux.vnet.ibm.com>
Acked-by: default avatarAndrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 03b8abed

drivers/misc/cxl/native.c

+8 −0
Original line number Diff line number Diff line
@@ -897,6 +897,14 @@ int cxl_attach_dedicated_process_psl9(struct cxl_context *ctx, u64 wed, u64 amr) 
	if (ctx->afu->adapter->native->sl_ops->update_dedicated_ivtes)

		afu->adapter->native->sl_ops->update_dedicated_ivtes(ctx);



	ctx->elem->software_state = cpu_to_be32(CXL_PE_SOFTWARE_STATE_V);

	/*

	 * Ideally we should do a wmb() here to make sure the changes to the

	 * PE are visible to the card before we call afu_enable.

	 * On ppc64 though all mmios are preceded by a 'sync' instruction hence

	 * we dont dont need one here.

	 */



	result = cxl_ops->afu_reset(afu);

	if (result)

		return result;