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authorlaforge <laforge@6dc7ffe9-61d6-0310-9af1-9938baff3ed1>2006-09-12 17:35:30 +0000
committerlaforge <laforge@6dc7ffe9-61d6-0310-9af1-9938baff3ed1>2006-09-12 17:35:30 +0000
commitd256545b2fd62d78910efcc6273c3b70abd3aa13 (patch)
treea05e17ec752cfbcc0b79fdbfba81fb949545a112 /firmware/src/os/req_ctx.c
parent04e0441914eeb25e042189679b55c9577fc96d2a (diff)
move to new directory
git-svn-id: https://svn.openpcd.org:2342/trunk@191 6dc7ffe9-61d6-0310-9af1-9938baff3ed1
Diffstat (limited to 'firmware/src/os/req_ctx.c')
-rw-r--r--firmware/src/os/req_ctx.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/firmware/src/os/req_ctx.c b/firmware/src/os/req_ctx.c
new file mode 100644
index 0000000..99d248b
--- /dev/null
+++ b/firmware/src/os/req_ctx.c
@@ -0,0 +1,50 @@
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <asm/bitops.h>
+#include <os/dbgu.h>
+#include <os/req_ctx.h>
+
+#include "../openpcd.h"
+
+/* FIXME: locking, FIFO order processing */
+
+static struct req_ctx req_ctx[NUM_REQ_CTX];
+
+struct req_ctx *req_ctx_find_get(unsigned long old_state, unsigned long new_state)
+{
+ unsigned long flags;
+ u_int8_t i;
+
+ for (i = 0; i < NUM_REQ_CTX; i++) {
+ local_irq_save(flags);
+ if (req_ctx[i].state == old_state) {
+ req_ctx[i].state = new_state;
+ local_irq_restore(flags);
+ return &req_ctx[i];
+ }
+ local_irq_restore(flags);
+ }
+
+ return NULL;
+}
+
+u_int8_t req_ctx_num(struct req_ctx *ctx)
+{
+ return ((char *)ctx - (char *)&req_ctx[0])/sizeof(*ctx);
+}
+
+void req_ctx_set_state(struct req_ctx *ctx, unsigned long new_state)
+{
+ unsigned long flags;
+
+ /* FIXME: do we need this kind of locking, we're UP! */
+ local_irq_save(flags);
+ ctx->state = new_state;
+ local_irq_restore(flags);
+}
+
+void req_ctx_put(struct req_ctx *ctx)
+{
+ req_ctx_set_state(ctx, RCTX_STATE_FREE);
+}