1 files changed, 131 insertions, 0 deletions
diff --git a/drivers/net/ibm_emac/ibm_emac_mal.h b/drivers/net/ibm_emac/ibm_emac_mal.h
new file mode 100644
index 000000000000..dd9f0dabc6e0
--- /dev/null
+++ b/drivers/net/ibm_emac/ibm_emac_mal.h
@@ -0,0 +1,131 @@
+#ifndef _IBM_EMAC_MAL_H
+#define _IBM_EMAC_MAL_H
+
+#include <linux/list.h>
+
+#define MAL_DT_ALIGN	(4096)	/* Alignment for each channel's descriptor table */
+
+#define MAL_CHAN_MASK(chan)	(0x80000000 >> (chan))
+
+/* MAL Buffer Descriptor structure */
+struct mal_descriptor {
+	unsigned short ctrl;	/* MAL / Commac status control bits */
+	short data_len;		/* Max length is 4K-1 (12 bits)     */
+	unsigned char *data_ptr;	/* pointer to actual data buffer    */
+} __attribute__ ((packed));
+
+/* the following defines are for the MadMAL status and control registers. */
+/* MADMAL transmit and receive status/control bits  */
+#define MAL_RX_CTRL_EMPTY		0x8000
+#define MAL_RX_CTRL_WRAP		0x4000
+#define MAL_RX_CTRL_CM			0x2000
+#define MAL_RX_CTRL_LAST		0x1000
+#define MAL_RX_CTRL_FIRST		0x0800
+#define MAL_RX_CTRL_INTR		0x0400
+
+#define MAL_TX_CTRL_READY		0x8000
+#define MAL_TX_CTRL_WRAP		0x4000
+#define MAL_TX_CTRL_CM			0x2000
+#define MAL_TX_CTRL_LAST		0x1000
+#define MAL_TX_CTRL_INTR		0x0400
+
+struct mal_commac_ops {
+	void (*txeob) (void *dev, u32 chanmask);
+	void (*txde) (void *dev, u32 chanmask);
+	void (*rxeob) (void *dev, u32 chanmask);
+	void (*rxde) (void *dev, u32 chanmask);
+};
+
+struct mal_commac {
+	struct mal_commac_ops *ops;
+	void *dev;
+	u32 tx_chan_mask, rx_chan_mask;
+	struct list_head list;
+};
+
+struct ibm_ocp_mal {
+	int dcrbase;
+
+	struct list_head commac;
+	u32 tx_chan_mask, rx_chan_mask;
+
+	dma_addr_t tx_phys_addr;
+	struct mal_descriptor *tx_virt_addr;
+
+	dma_addr_t rx_phys_addr;
+	struct mal_descriptor *rx_virt_addr;
+};
+
+#define GET_MAL_STANZA(base,dcrn) \
+	case base: \
+		x = mfdcr(dcrn(base)); \
+		break;
+
+#define SET_MAL_STANZA(base,dcrn, val) \
+	case base: \
+		mtdcr(dcrn(base), (val)); \
+		break;
+
+#define GET_MAL0_STANZA(dcrn) GET_MAL_STANZA(DCRN_MAL_BASE,dcrn)
+#define SET_MAL0_STANZA(dcrn,val) SET_MAL_STANZA(DCRN_MAL_BASE,dcrn,val)
+
+#ifdef DCRN_MAL1_BASE
+#define GET_MAL1_STANZA(dcrn) GET_MAL_STANZA(DCRN_MAL1_BASE,dcrn)
+#define SET_MAL1_STANZA(dcrn,val) SET_MAL_STANZA(DCRN_MAL1_BASE,dcrn,val)
+#else				/* ! DCRN_MAL1_BASE */
+#define GET_MAL1_STANZA(dcrn)
+#define SET_MAL1_STANZA(dcrn,val)
+#endif
+
+#define get_mal_dcrn(mal, dcrn) ({ \
+	u32 x; \
+	switch ((mal)->dcrbase) { \
+		GET_MAL0_STANZA(dcrn) \
+		GET_MAL1_STANZA(dcrn) \
+	default: \
+		x = 0; \
+		BUG(); \
+	} \
+x; })
+
+#define set_mal_dcrn(mal, dcrn, val) do { \
+	switch ((mal)->dcrbase) { \
+		SET_MAL0_STANZA(dcrn,val) \
+		SET_MAL1_STANZA(dcrn,val) \
+	default: \
+		BUG(); \
+	} } while (0)
+
+static inline void mal_enable_tx_channels(struct ibm_ocp_mal *mal, u32 chanmask)
+{
+	set_mal_dcrn(mal, DCRN_MALTXCASR,
+		     get_mal_dcrn(mal, DCRN_MALTXCASR) | chanmask);
+}
+
+static inline void mal_disable_tx_channels(struct ibm_ocp_mal *mal,
+					   u32 chanmask)
+{
+	set_mal_dcrn(mal, DCRN_MALTXCARR, chanmask);
+}
+
+static inline void mal_enable_rx_channels(struct ibm_ocp_mal *mal, u32 chanmask)
+{
+	set_mal_dcrn(mal, DCRN_MALRXCASR,
+		     get_mal_dcrn(mal, DCRN_MALRXCASR) | chanmask);
+}
+
+static inline void mal_disable_rx_channels(struct ibm_ocp_mal *mal,
+					   u32 chanmask)
+{
+	set_mal_dcrn(mal, DCRN_MALRXCARR, chanmask);
+}
+
+extern int mal_register_commac(struct ibm_ocp_mal *mal,
+			       struct mal_commac *commac);
+extern int mal_unregister_commac(struct ibm_ocp_mal *mal,
+				 struct mal_commac *commac);
+
+extern int mal_set_rcbs(struct ibm_ocp_mal *mal, int channel,
+			unsigned long size);
+
+#endif				/* _IBM_EMAC_MAL_H */