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Changes to estimatePosition API

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Signed-off-by: Clifford Wolf <clifford@clifford.at>
This commit is contained in:
Clifford Wolf 2018-06-20 12:57:38 +02:00
parent c3837027b2
commit cb9c6c6ef2
5 changed files with 18 additions and 18 deletions
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19
common/place_sa.cc
View File

@ -51,7 +51,8 @@ class SAPlacer
int num_bel_types = 0;
for (auto bel : ctx->getBels()) {
int x, y;
ctx->estimatePosition(bel, x, y);
bool gb;
ctx->estimatePosition(bel, x, y, gb);
BelType type = ctx->getBelType(bel);
int type_idx;
if (bel_types.find(type) == bel_types.end()) {
@ -288,18 +289,17 @@ class SAPlacer
float get_wirelength(NetInfo *net)
{
float wirelength = 0;
int driver_x = 0, driver_y = 0;
bool consider_driver = false;
int driver_x, driver_y;
bool driver_gb;
CellInfo *driver_cell = net->driver.cell;
if (!driver_cell)
return 0;
if (driver_cell->bel == BelId())
return 0;
consider_driver =
ctx->estimatePosition(driver_cell->bel, driver_x, driver_y);
ctx->estimatePosition(driver_cell->bel, driver_x, driver_y, driver_gb);
WireId drv_wire = ctx->getWireBelPin(
driver_cell->bel, ctx->portPinFromId(net->driver.port));
if (!consider_driver)
if (driver_gb)
return 0;
for (auto load : net->users) {
if (load.cell == nullptr)
@ -307,7 +307,7 @@ class SAPlacer
CellInfo *load_cell = load.cell;
if (load_cell->bel == BelId())
continue;
// ctx->estimatePosition(load_cell->bel, load_x, load_y);
// ctx->estimatePosition(load_cell->bel, load_x, load_y, load_gb);
WireId user_wire = ctx->getWireBelPin(
load_cell->bel, ctx->portPinFromId(load.port));
// wirelength += std::abs(load_x - driver_x) + std::abs(load_y -
@ -405,8 +405,9 @@ class SAPlacer
BelId random_bel_for_cell(CellInfo *cell)
{
BelType targetType = ctx->belTypeFromId(cell->type);
int x = 0, y = 0;
ctx->estimatePosition(cell->bel, x, y);
int x, y;
bool gb;
ctx->estimatePosition(cell->bel, x, y, gb);
while (true) {
int nx = ctx->rng(2 * diameter + 1) + std::max(x - diameter, 0);
int ny = ctx->rng(2 * diameter + 1) + std::max(y - diameter, 0);

8
dummy/arch.cc
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@ -141,11 +141,11 @@ const std::vector<PipId> &Arch::getWireAliases(WireId wire) const
// ---------------------------------------------------------------
bool Arch::estimatePosition(BelId bel, int &x, int &y) const
void Arch::estimatePosition(BelId bel, int &x, int &y, bool &gb) const
{
x = 0.0;
y = 0.0;
return false;
x = 0;
y = 0;
gb = false;
}
delay_t Arch::estimateDelay(WireId src, WireId dst) const { return 0.0; }

2
dummy/arch.h
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@ -118,7 +118,7 @@ struct Arch : BaseCtx
const std::vector<PipId> &getPipsUphill(WireId wire) const;
const std::vector<PipId> &getWireAliases(WireId wire) const;
bool estimatePosition(BelId bel, int &x, int &y) const;
void estimatePosition(BelId bel, int &x, int &y, bool &gb) const;
delay_t estimateDelay(WireId src, WireId dst) const;
delay_t getDelayEpsilon() const { return 0.01; }
float getDelayNS(delay_t v) const { return v; }

5
ice40/arch.cc
View File

@ -295,13 +295,12 @@ std::string Arch::getBelPackagePin(BelId bel) const
}
// -----------------------------------------------------------------------
bool Arch::estimatePosition(BelId bel, int &x, int &y) const
void Arch::estimatePosition(BelId bel, int &x, int &y, bool &gb) const
{
assert(bel != BelId());
x = chip_info->bel_data[bel.index].x;
y = chip_info->bel_data[bel.index].y;
return chip_info->bel_data[bel.index].type != TYPE_SB_GB;
gb = chip_info->bel_data[bel.index].type == TYPE_SB_GB;
}
delay_t Arch::estimateDelay(WireId src, WireId dst) const

2
ice40/arch.h
View File

@ -753,7 +753,7 @@ struct Arch : BaseCtx
// -------------------------------------------------
bool estimatePosition(BelId bel, int &x, int &y) const;
void estimatePosition(BelId bel, int &x, int &y, bool &gb) const;
delay_t estimateDelay(WireId src, WireId dst) const;
delay_t getDelayEpsilon() const { return 10; }
float getDelayNS(delay_t v) const { return v * 0.001; }