Author: adrian
Date: Wed Aug 15 06:48:34 2012
New Revision: 239282
URL: http://svn.freebsd.org/changeset/base/239282
Log:
Implement a sequential descriptor ID value and stuff it in the ath_buf.
This will be used by the EDMA TX code to assign descriptor IDs in order
to provide some debugging.
Modified:
head/sys/dev/ath/if_ath.c
head/sys/dev/ath/if_athvar.h
Modified: head/sys/dev/ath/if_ath.c
==============================================================================
--- head/sys/dev/ath/if_ath.c Wed Aug 15 06:31:32 2012 (r239281)
+++ head/sys/dev/ath/if_ath.c Wed Aug 15 06:48:34 2012 (r239282)
@@ -2344,6 +2344,14 @@ _ath_getbuf_locked(struct ath_softc *sc,
bf->bf_comp = NULL; /* XXX again, just to be sure */
bzero(&bf->bf_state, sizeof(bf->bf_state));
+ /*
+ * Track the descriptor ID only if doing EDMA
+ */
+ if (sc->sc_isedma) {
+ bf->bf_descid = sc->sc_txbuf_descid;
+ sc->sc_txbuf_descid++;
+ }
+
return bf;
}
Modified: head/sys/dev/ath/if_athvar.h
==============================================================================
--- head/sys/dev/ath/if_athvar.h Wed Aug 15 06:31:32 2012
(r239281)
+++ head/sys/dev/ath/if_athvar.h Wed Aug 15 06:48:34 2012
(r239282)
@@ -191,6 +191,7 @@ struct ath_buf {
int bf_nseg;
HAL_STATUS bf_rxstatus;
uint16_t bf_flags; /* status flags (below) */
+ uint16_t bf_descid; /* 16 bit descriptor ID */
struct ath_desc *bf_desc; /* virtual addr of desc */
struct ath_desc_status bf_status; /* tx/rx status */
bus_addr_t bf_daddr; /* physical addr of desc */
@@ -576,6 +577,7 @@ struct ath_softc {
u_int sc_monpass; /* frames to pass in mon.mode */
struct ath_descdma sc_txdma; /* TX descriptors */
+ uint16_t sc_txbuf_descid;
ath_bufhead sc_txbuf; /* transmit buffer */
int sc_txbuf_cnt; /* how many buffers avail */
struct ath_descdma sc_txdma_mgmt; /* mgmt TX descriptors */
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