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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: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Vaibhav Jain 2017-09-04 14:18:25 +05:30 committed by Michael Ellerman
parent 03b8abedf4
commit 8512bffd62
1 changed files with 8 additions and 0 deletions
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8
drivers/misc/cxl/native.c
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@ -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;