Manually stomp the DMA size to 128B for AR5418 devices. This patch should probably...

[madwifi/.git] / ath / if_ath_hal_extensions.h

diff --git a/ath/if_ath_hal_extensions.h b/ath/if_ath_hal_extensions.h
index 2c1f27daa701294bb3042feeceaf3b9536e50ab8..13ddcbd55ce1ec258cd652229b106e716320eff4 100644 (file)
--- a/ath/if_ath_hal_extensions.h
+++ b/ath/if_ath_hal_extensions.h
@@ -143,6 +143,34 @@
 #define DEFAULT_AR5K_PHY_SPUR_THRESH           2
 #define DEFAULT_AR5K_PHY_SIG_FIRSTEP           0
 
+/*
+ * Transmit configuration register
+ */
+#define AR5K_TXCFG             0x0030                  /* Register Address */
+#define AR5K_TXCFG_SDMAMR      0x00000007      /* DMA size */
+#define AR5K_TXCFG_SDMAMR_S    0
+
+/*
+ * Receive configuration register
+ */
+#define AR5K_RXCFG             0x0034                  /* Register Address */
+#define AR5K_RXCFG_SDMAMW      0x00000007      /* DMA size */
+#define AR5K_RXCFG_SDMAMW_S    0
+
+/*
+ * DMA size definitions (2^(n+2))
+ */
+enum ath5k_dmasize {
+       AR5K_DMASIZE_4B = 0,
+       AR5K_DMASIZE_8B,
+       AR5K_DMASIZE_16B,
+       AR5K_DMASIZE_32B,
+       AR5K_DMASIZE_64B,
+       AR5K_DMASIZE_128B,
+       AR5K_DMASIZE_256B,
+       AR5K_DMASIZE_512B
+};
+
 static inline unsigned long field_width(unsigned long mask, unsigned long shift)
 {
        unsigned long r = 0;
@@ -429,4 +457,9 @@ static inline void ath_hal_verify_default_intmit(struct ath_hal *ah) {
        VERIFICATION_WARNING(ah, AR5K_PHY_SPUR, AR5K_PHY_SPUR_THRESH, 0);
 }
 
+static inline void ath_hal_set_dmasize_pcie(struct ath_hal *ah) {
+       SET_FIELD(ah, AR5K_TXCFG, AR5K_TXCFG_SDMAMR, AR5K_DMASIZE_128B);
+       SET_FIELD(ah, AR5K_RXCFG, AR5K_RXCFG_SDMAMW, AR5K_DMASIZE_128B);
+}
+
 #endif /* _IF_ATH_HAL_EXTENSIONS_H_ */