3 * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen IBM Corporation
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include <asm/types.h>
24 #include <linux/spinlock.h>
27 * NUM_TCE_LEVELS defines the largest contiguous block
28 * of dma (tce) space we can get. NUM_TCE_LEVELS = 10
29 * allows up to 2**9 pages (512 * 4096) = 2 MB
31 #define NUM_TCE_LEVELS 10
33 #define NO_TCE ((dma_addr_t)-1)
36 * Tces come in two formats, one for the virtual bus and a different
45 u64 cacheBits :6; /* Cache hash bits - not used */
47 u64 rpn :40; /* Absolute page number */
48 u64 valid :1; /* Tce is valid (vb only) */
49 u64 allIo :1; /* Tce is valid for all lps (vb only) */
50 u64 lpIndex :8; /* LpIndex for user of TCE (vb only) */
51 u64 pciWrite :1; /* Write allowed (pci only) */
52 u64 readWrite :1; /* Read allowed (pci), Write allowed (vb) */
57 unsigned long numBits;
58 unsigned long numBytes;
62 struct MultiLevelBitmap {
63 unsigned long maxLevel;
64 struct Bitmap level[NUM_TCE_LEVELS];
71 u64 base; /* pSeries native only */
75 struct MultiLevelBitmap mlbm;
78 struct TceTableManagerCB {
79 u64 busNumber; /* Bus number for this tce table */
80 u64 start; /* Will be NULL for secondary */
81 u64 totalSize; /* Size (in pages) of whole table */
82 u64 startOffset; /* Index into real tce table of the
83 start of our section */
84 u64 size; /* Size (in pages) of our section */
85 u64 index; /* Index of this tce table (token?) */
86 u16 maxTceTableIndex; /* Max num of tables for partition */
87 u8 virtualBusFlag; /* Flag to indicate virtual bus */
88 u8 logicalSlot; /* IOA Tce Slot Index */
92 extern struct TceTable virtBusTceTable; /* Tce table for virtual bus */
94 extern void create_tce_tables(void);
95 extern void create_pci_bus_tce_table(unsigned long);
97 void tce_init_pSeries(void);
98 void tce_init_iSeries(void);