rt2x00: rt2800pci: move TX descriptor functions to the rt2800mmio module
Move the functions into a separate module, in order
to make those usable from other modules. Also move
the TX descriptor related defines from rt2800pci.h
into rt2800mmio.h.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2800mmio.c b/drivers/net/wireless/rt2x00/rt2800mmio.c
index a2b9848..d2ebb68 100644
--- a/drivers/net/wireless/rt2x00/rt2800mmio.c
+++ b/drivers/net/wireless/rt2x00/rt2800mmio.c
@@ -30,6 +30,74 @@
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/export.h>
+
+#include "rt2x00.h"
+#include "rt2x00mmio.h"
+#include "rt2800mmio.h"
+
+/*
+ * TX descriptor initialization
+ */
+__le32 *rt2800mmio_get_txwi(struct queue_entry *entry)
+{
+ return (__le32 *) entry->skb->data;
+}
+EXPORT_SYMBOL_GPL(rt2800mmio_get_txwi);
+
+void rt2800mmio_write_tx_desc(struct queue_entry *entry,
+ struct txentry_desc *txdesc)
+{
+ struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
+ struct queue_entry_priv_mmio *entry_priv = entry->priv_data;
+ __le32 *txd = entry_priv->desc;
+ u32 word;
+ const unsigned int txwi_size = entry->queue->winfo_size;
+
+ /*
+ * The buffers pointed by SD_PTR0/SD_LEN0 and SD_PTR1/SD_LEN1
+ * must contains a TXWI structure + 802.11 header + padding + 802.11
+ * data. We choose to have SD_PTR0/SD_LEN0 only contains TXWI and
+ * SD_PTR1/SD_LEN1 contains 802.11 header + padding + 802.11
+ * data. It means that LAST_SEC0 is always 0.
+ */
+
+ /*
+ * Initialize TX descriptor
+ */
+ word = 0;
+ rt2x00_set_field32(&word, TXD_W0_SD_PTR0, skbdesc->skb_dma);
+ rt2x00_desc_write(txd, 0, word);
+
+ word = 0;
+ rt2x00_set_field32(&word, TXD_W1_SD_LEN1, entry->skb->len);
+ rt2x00_set_field32(&word, TXD_W1_LAST_SEC1,
+ !test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
+ rt2x00_set_field32(&word, TXD_W1_BURST,
+ test_bit(ENTRY_TXD_BURST, &txdesc->flags));
+ rt2x00_set_field32(&word, TXD_W1_SD_LEN0, txwi_size);
+ rt2x00_set_field32(&word, TXD_W1_LAST_SEC0, 0);
+ rt2x00_set_field32(&word, TXD_W1_DMA_DONE, 0);
+ rt2x00_desc_write(txd, 1, word);
+
+ word = 0;
+ rt2x00_set_field32(&word, TXD_W2_SD_PTR1,
+ skbdesc->skb_dma + txwi_size);
+ rt2x00_desc_write(txd, 2, word);
+
+ word = 0;
+ rt2x00_set_field32(&word, TXD_W3_WIV,
+ !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc->flags));
+ rt2x00_set_field32(&word, TXD_W3_QSEL, 2);
+ rt2x00_desc_write(txd, 3, word);
+
+ /*
+ * Register descriptor details in skb frame descriptor.
+ */
+ skbdesc->desc = txd;
+ skbdesc->desc_len = TXD_DESC_SIZE;
+}
+EXPORT_SYMBOL_GPL(rt2800mmio_write_tx_desc);
#include "rt2x00.h"