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r600/sfn: add callstack non-evergreen support

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Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5084>
This commit is contained in:
Dave Airlie 2020-05-18 16:36:46 +10:00 • committed by Marge Bot
parent 19273fb227
commit 4746796b82
1 changed files with 34 additions and 6 deletions
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40
src/gallium/drivers/r600/sfn/sfn_callstack.cpp
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@ -90,12 +90,40 @@ int CallStack::update_max_depth(unsigned type)
elements = (stack.loop + stack.push_wqm ) * entry_size;
elements += stack.push;
/* These next three lines are EVERGREEN specific and should
* be moved to a virtual function when other chipsets are to
* be supported */
assert(m_bc.chip_class == EVERGREEN);
if (type == FC_PUSH_VPM || stack.push > 0) {
elements += 1;
switch (m_bc.chip_class) {
case R600:
case R700:
/* pre-r8xx: if any non-WQM PUSH instruction is invoked, 2 elements on
* the stack must be reserved to hold the current active/continue
* masks */
if (type == FC_PUSH_VPM || stack.push > 0) {
elements += 2;
}
break;
case CAYMAN:
/* r9xx: any stack operation on empty stack consumes 2 additional
* elements */
elements += 2;
break;
case EVERGREEN:
/* r8xx+: 2 extra elements are not always required, but one extra
* element must be added for each of the following cases:
* 1. There is an ALU_ELSE_AFTER instruction at the point of greatest
* stack usage.
* (Currently we don't use ALU_ELSE_AFTER.)
* 2. There are LOOP/WQM frames on the stack when any flavor of non-WQM
* PUSH instruction executed.
*
* NOTE: it seems we also need to reserve additional element in some
* other cases, e.g. when we have 4 levels of PUSH_VPM in the shader,
* then STACK_SIZE should be 2 instead of 1 */
if (type == FC_PUSH_VPM || stack.push > 0) {
elements += 1;
}
break;
default:
assert(0);
break;
}
entry_size = 4;