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authorFelix Fietkau <nbd@nbd.name>2017-11-21 10:50:52 +0100
committerKalle Valo <kvalo@codeaurora.org>2017-12-07 15:35:55 +0200
commit17f1de56df051229988aab37e01971c9713c4a31 (patch)
tree5cb9fd220e548edcc5a2de1845737f1795594de9 /drivers/net/wireless/mediatek/mt76/dma.h
parent9402f8eb9bed7a3dc6ff776dfa7f0b78750f21ed (diff)
mt76: add common code shared between multiple chipsets
This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/dma.h')
-rw-r--r--drivers/net/wireless/mediatek/mt76/dma.h38
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/dma.h b/drivers/net/wireless/mediatek/mt76/dma.h
new file mode 100644
index 000000000000..1dad39697929
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/dma.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef __MT76_DMA_H
+#define __MT76_DMA_H
+
+#define MT_RING_SIZE 0x10
+
+#define MT_DMA_CTL_SD_LEN1 GENMASK(13, 0)
+#define MT_DMA_CTL_LAST_SEC1 BIT(14)
+#define MT_DMA_CTL_BURST BIT(15)
+#define MT_DMA_CTL_SD_LEN0 GENMASK(29, 16)
+#define MT_DMA_CTL_LAST_SEC0 BIT(30)
+#define MT_DMA_CTL_DMA_DONE BIT(31)
+
+struct mt76_desc {
+ __le32 buf0;
+ __le32 ctrl;
+ __le32 buf1;
+ __le32 info;
+} __packed __aligned(4);
+
+int mt76_dma_attach(struct mt76_dev *dev);
+void mt76_dma_cleanup(struct mt76_dev *dev);
+
+#endif