overhaul meshes

+ Previous name was grid

1 files changed, 0 insertions, 178 deletions

diff --git a/src/grid/node.c b/src/grid/node.c
deleted file mode 100644
index 512cae3..0000000
--- a/src/grid/node.c
+++ /dev/null
@@ -1,178 +0,0 @@
-/* very simple grid node with 32bit private region, does not currently signal
- * being busy or anything. I think I might have to refine the message passing
- * interface I have, but this is good enough.
- *
- * Each node should have a router beneath it, just to simplify my life. A router
- * is basically a bus with a fallback ascension path.
- */
-#include <stdbool.h>
-
-#include <gran/grid/node.h>
-
-struct port {
-	struct component *send;
-	struct packet pkt;
-	bool busy;
-};
-
-struct grid_node {
-	struct component component;
-	uint16_t x, y;
-
-	struct port left, right, up, down, lower;
-
-	unsigned priority;
-};
-
-static stat port_clock(struct grid_node *grid, struct port *to, struct port *from)
-{
-	assert(from->busy);
-	stat r = SEND(grid, to->send, from->pkt);
-	if (r == EBUSY) {
-		grid->priority++;
-		return OK;
-	}
-
-	from->busy = false;
-	return OK;
-}
-
-static struct port *select_input(struct grid_node *grid)
-{
-	struct port *ports[5] = {
-		&grid->left,
-		&grid->right,
-		&grid->up,
-		&grid->down,
-		&grid->lower,
-	};
-	for (size_t i = 0; i < 5; ++i) {
-		size_t idx = (i + grid->priority) % 5;
-		struct port *port = ports[idx];
-		if (!port)
-			continue;
-
-		if (!port->busy)
-			continue;
-
-		return port;
-	}
-
-	return NULL;
-}
-
-static stat clock_once(struct grid_node *grid)
-{
-	struct port *input = select_input(grid);
-	if (!input)
-		return OK;
-
-	uint16_t x;
-	uint16_t y;
-	uint64_t addr = input->pkt.to;
-	addr_grid(addr, NULL, &x, &y);
-
-	if (grid->x == x && grid->y == y) {
-		if (!grid->lower.send)
-			goto nosuch;
-
-		return port_clock(grid, &grid->lower, input);
-	}
-
-	if (y < grid->y) {
-		if (!grid->down.send)
-			goto nosuch;
-
-		return port_clock(grid, &grid->down, input);
-	}
-
-	if (y > grid->y) {
-		if (!grid->up.send)
-			goto nosuch;
-
-		return port_clock(grid, &grid->up, input);
-	}
-
-	if (x < grid->x) {
-		if (!grid->left.send)
-			goto nosuch;
-
-		return port_clock(grid, &grid->left, input);
-	}
-
-	if (x > grid->x) {
-		if (!grid->right.send)
-			goto nosuch;
-
-		return port_clock(grid, &grid->right, input);
-	}
-
-nosuch:
-	abort();
-	return OK;
-}
-
-static stat grid_clock(struct grid_node *grid)
-{
-	clock_once(grid);
-	return OK;
-}
-
-
-static stat port_receive(struct port *port, struct packet pkt)
-{
-	if (port->busy)
-		return EBUSY;
-
-	port->pkt = pkt;
-	port->busy = true;
-	return OK;
-}
-
-static stat grid_receive(struct grid_node *grid, struct component *from, struct packet pkt)
-{
-	if (from == grid->lower.send)
-		return port_receive(&grid->lower, pkt);
-
-	if (from == grid->left.send)
-		return port_receive(&grid->left, pkt);
-
-	if (from == grid->right.send)
-		return port_receive(&grid->right, pkt);
-
-	if (from == grid->down.send)
-		return port_receive(&grid->down, pkt);
-
-	if (from == grid->up.send)
-		return port_receive(&grid->up, pkt);
-
-	abort();
-	return OK;
-}
-
-struct component *create_grid_node(uint16_t x, uint16_t y)
-{
-	struct grid_node *node = calloc(1, sizeof(struct grid_node));
-	if (!node)
-		return NULL;
-
-	node->component.receive = (receive_callback)grid_receive;
-	node->component.clock = (clock_callback)grid_clock;
-	node->x = x;
-	node->y = y;
-	return (struct component *)node;
-}
-
-stat grid_node_connect(struct component *node,
-		struct component *left, struct component *right,
-		struct component *up, struct component *down,
-		struct component *lower)
-{
-	struct grid_node *n = (struct grid_node *)node;
-	n->left.send = left;
-	n->right.send = right;
-	n->up.send = up;
-	n->down.send = down;
-	n->lower.send = lower;
-	return OK;
-}