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authorOlof Johansson <olof@lixom.net>2006-04-28 22:51:59 -0500
committerPaul Mackerras <paulus@samba.org>2006-04-29 18:07:54 +1000
commitbc97ce951cfb697eaac9d5b6a2fbe4544fdf1a7c (patch)
treeae880181c00f47a28e805f5328ab7e9a15620ee9 /include/asm-powerpc/tce.h
parentc7f0e8cb5654a50986c6097b3c0cca972e406899 (diff)
[PATCH] powerpc: kill union tce_entry
It's been long overdue to kill the union tce_entry in the pSeries/iSeries TCE code, especially since I asked the Summit guys to do it on the code they copied from us. Also, while I was at it, I cleaned up some whitespace. Built and booted on pSeries, built on iSeries. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/tce.h')
-rw-r--r--include/asm-powerpc/tce.h35
1 files changed, 9 insertions, 26 deletions
diff --git a/include/asm-powerpc/tce.h b/include/asm-powerpc/tce.h
index 6fa200ad7a7..c9483adbf59 100644
--- a/include/asm-powerpc/tce.h
+++ b/include/asm-powerpc/tce.h
@@ -35,32 +35,15 @@
#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
-};
-
+#define TCE_ENTRY_SIZE 8 /* each TCE is 64 bits */
+
+#define TCE_RPN_MASK 0xfffffffffful /* 40-bit RPN (4K pages) */
+#define TCE_RPN_SHIFT 12
+#define TCE_VALID 0x800 /* TCE valid */
+#define TCE_ALLIO 0x400 /* TCE valid for all lpars */
+#define TCE_PCI_WRITE 0x2 /* write from PCI allowed */
+#define TCE_PCI_READ 0x1 /* read from PCI allowed */
+#define TCE_VB_WRITE 0x1 /* write from VB allowed */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_TCE_H */