This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-powerpc / tce.h

diff --git a/include/asm-powerpc/tce.h b/include/asm-powerpc/tce.h
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+/*
+ * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
+ * Rewrite, cleanup:
+ * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#ifndef _ASM_POWERPC_TCE_H
+#define _ASM_POWERPC_TCE_H
+#ifdef __KERNEL__
+
+/*
+ * Tces come in two formats, one for the virtual bus and a different
+ * format for PCI
+ */
+#define TCE_VB  0
+#define TCE_PCI 1
+
+/* TCE page size is 4096 bytes (1 << 12) */
+
+#define TCE_SHIFT      12
+#define TCE_PAGE_SIZE  (1 << TCE_SHIFT)
+#define TCE_PAGE_FACTOR        (PAGE_SHIFT - TCE_SHIFT)
+
+
+/* tce_entry
+ * Used by pSeries (SMP) and iSeries/pSeries LPAR, but there it's
+ * abstracted so layout is irrelevant.
+ */
+union tce_entry {
+       unsigned long te_word;
+       struct {
+               unsigned int  tb_cacheBits :6;  /* Cache hash bits - not used */
+               unsigned int  tb_rsvd      :6;
+               unsigned long tb_rpn       :40; /* Real page number */
+               unsigned int  tb_valid     :1;  /* Tce is valid (vb only) */
+               unsigned int  tb_allio     :1;  /* Tce is valid for all lps (vb only) */
+               unsigned int  tb_lpindex   :8;  /* LpIndex for user of TCE (vb only) */
+               unsigned int  tb_pciwr     :1;  /* Write allowed (pci only) */
+               unsigned int  tb_rdwr      :1;  /* Read allowed  (pci), Write allowed (vb) */
+       } te_bits;
+#define te_cacheBits te_bits.tb_cacheBits
+#define te_rpn       te_bits.tb_rpn
+#define te_valid     te_bits.tb_valid
+#define te_allio     te_bits.tb_allio
+#define te_lpindex   te_bits.tb_lpindex
+#define te_pciwr     te_bits.tb_pciwr
+#define te_rdwr      te_bits.tb_rdwr
+};
+
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_POWERPC_TCE_H */