diff options
author | (no author) <(no author)@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> | 2006-09-09 01:08:38 +0000 |
---|---|---|
committer | (no author) <(no author)@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> | 2006-09-09 01:08:38 +0000 |
commit | 520784c7ba6a8325e413a293ab11840d982ba87d (patch) | |
tree | 44ee93d44102d47014c6ff696ebc93e8de402e01 /openpcd/firmware/src/os/req_ctx.c | |
parent | b0317c72667378333e1008c49559e974f3e7c15d (diff) |
- major reorganization, split source tree in
- os: core "operating system"
- pcd: PCD (reader) side
- picc: PICC (transponder) side
- rewrite linker script almost from scratch (for correct DFU operation)
git-svn-id: https://svn.openpcd.org:2342/trunk@142 6dc7ffe9-61d6-0310-9af1-9938baff3ed1
Diffstat (limited to 'openpcd/firmware/src/os/req_ctx.c')
-rw-r--r-- | openpcd/firmware/src/os/req_ctx.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/openpcd/firmware/src/os/req_ctx.c b/openpcd/firmware/src/os/req_ctx.c new file mode 100644 index 0000000..831d48e --- /dev/null +++ b/openpcd/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 ((void *)ctx - (void *)&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); +} |