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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/reg.h')
-rw-r--r--drivers/net/wireless/ath/ath9k/reg.h15
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
index 49ec25f020f0..8e653fb937a1 100644
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
@@ -1332,13 +1332,22 @@ enum {
#define AR_MCAST_FIL0 0x8040
#define AR_MCAST_FIL1 0x8044
+/*
+ * AR_DIAG_SW - Register which can be used for diagnostics and testing purposes.
+ *
+ * The force RX abort (AR_DIAG_RX_ABORT, bit 25) can be used in conjunction with
+ * RX block (AR_DIAG_RX_DIS, bit 5) to help fast channel change to shut down
+ * receive. The force RX abort bit will kill any frame which is currently being
+ * transferred between the MAC and baseband. The RX block bit (AR_DIAG_RX_DIS)
+ * will prevent any new frames from getting started.
+ */
#define AR_DIAG_SW 0x8048
#define AR_DIAG_CACHE_ACK 0x00000001
#define AR_DIAG_ACK_DIS 0x00000002
#define AR_DIAG_CTS_DIS 0x00000004
#define AR_DIAG_ENCRYPT_DIS 0x00000008
#define AR_DIAG_DECRYPT_DIS 0x00000010
-#define AR_DIAG_RX_DIS 0x00000020
+#define AR_DIAG_RX_DIS 0x00000020 /* RX block */
#define AR_DIAG_LOOP_BACK 0x00000040
#define AR_DIAG_CORR_FCS 0x00000080
#define AR_DIAG_CHAN_INFO 0x00000100
@@ -1347,12 +1356,12 @@ enum {
#define AR_DIAG_FRAME_NV0 0x00020000
#define AR_DIAG_OBS_PT_SEL1 0x000C0000
#define AR_DIAG_OBS_PT_SEL1_S 18
-#define AR_DIAG_FORCE_RX_CLEAR 0x00100000
+#define AR_DIAG_FORCE_RX_CLEAR 0x00100000 /* force rx_clear high */
#define AR_DIAG_IGNORE_VIRT_CS 0x00200000
#define AR_DIAG_FORCE_CH_IDLE_HIGH 0x00400000
#define AR_DIAG_EIFS_CTRL_ENA 0x00800000
#define AR_DIAG_DUAL_CHAIN_INFO 0x01000000
-#define AR_DIAG_RX_ABORT 0x02000000
+#define AR_DIAG_RX_ABORT 0x02000000 /* Force RX abort */
#define AR_DIAG_SATURATE_CYCLE_CNT 0x04000000
#define AR_DIAG_OBS_PT_SEL2 0x08000000
#define AR_DIAG_RX_CLEAR_CTL_LOW 0x10000000