Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / ethernet / ibm / emac / tah.h

diff --git a/kernel/drivers/net/ethernet/ibm/emac/tah.h b/kernel/drivers/net/ethernet/ibm/emac/tah.h
new file mode 100644 (file)
index 0000000..4d5f336
--- /dev/null
+++ b/kernel/drivers/net/ethernet/ibm/emac/tah.h
@@ -0,0 +1,95 @@
+/*
+ * drivers/net/ethernet/ibm/emac/tah.h
+ *
+ * Driver for PowerPC 4xx on-chip ethernet controller, TAH support.
+ *
+ * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
+ *                <benh@kernel.crashing.org>
+ *
+ * Based on the arch/ppc version of the driver:
+ *
+ * Copyright 2004 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * Copyright (c) 2005 Eugene Surovegin <ebs@ebshome.net>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __IBM_NEWEMAC_TAH_H
+#define __IBM_NEWEMAC_TAH_H
+
+/* TAH */
+struct tah_regs {
+       u32 revid;
+       u32 pad[3];
+       u32 mr;
+       u32 ssr0;
+       u32 ssr1;
+       u32 ssr2;
+       u32 ssr3;
+       u32 ssr4;
+       u32 ssr5;
+       u32 tsr;
+};
+
+
+/* TAH device */
+struct tah_instance {
+       struct tah_regs __iomem         *base;
+
+       /* Only one EMAC whacks us at a time */
+       struct mutex                    lock;
+
+       /* number of EMACs using this TAH */
+       int                             users;
+
+       /* OF device instance */
+       struct platform_device          *ofdev;
+};
+
+
+/* TAH engine */
+#define TAH_MR_CVR             0x80000000
+#define TAH_MR_SR              0x40000000
+#define TAH_MR_ST_256          0x01000000
+#define TAH_MR_ST_512          0x02000000
+#define TAH_MR_ST_768          0x03000000
+#define TAH_MR_ST_1024         0x04000000
+#define TAH_MR_ST_1280         0x05000000
+#define TAH_MR_ST_1536         0x06000000
+#define TAH_MR_TFS_16KB                0x00000000
+#define TAH_MR_TFS_2KB         0x00200000
+#define TAH_MR_TFS_4KB         0x00400000
+#define TAH_MR_TFS_6KB         0x00600000
+#define TAH_MR_TFS_8KB         0x00800000
+#define TAH_MR_TFS_10KB                0x00a00000
+#define TAH_MR_DTFP            0x00100000
+#define TAH_MR_DIG             0x00080000
+
+#ifdef CONFIG_IBM_EMAC_TAH
+
+int tah_init(void);
+void tah_exit(void);
+int tah_attach(struct platform_device *ofdev, int channel);
+void tah_detach(struct platform_device *ofdev, int channel);
+void tah_reset(struct platform_device *ofdev);
+int tah_get_regs_len(struct platform_device *ofdev);
+void *tah_dump_regs(struct platform_device *ofdev, void *buf);
+
+#else
+
+# define tah_init()            0
+# define tah_exit()            do { } while(0)
+# define tah_attach(x,y)       (-ENXIO)
+# define tah_detach(x,y)       do { } while(0)
+# define tah_reset(x)          do { } while(0)
+# define tah_get_regs_len(x)   0
+# define tah_dump_regs(x,buf)  (buf)
+
+#endif                         /* !CONFIG_IBM_EMAC_TAH */
+
+#endif /* __IBM_NEWEMAC_TAH_H */