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authorIshizaki Kou <kou.ishizaki@toshiba.co.jp>2008-04-24 05:28:48 -0400
committerPaul Mackerras <paulus@samba.org>2008-04-24 07:08:13 -0400
commit8ae6e30d2d6b4a7a45bb0d4fa4ecd56e65d24740 (patch)
treefffced1db7d6a42aecafae84b2cd3a78d159c157 /arch/powerpc/platforms/celleb/iommu.c
parent5a96dfe84b53cc05abe8c7f4d1dfd7b03a3e314a (diff)
[POWERPC] celleb: Move files for Beat mmu and iommu
This moves files for mmu and iommu on Beat into platforms/cell/. All files in this patch are used by celleb-beat only. Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/celleb/iommu.c')
-rw-r--r--arch/powerpc/platforms/celleb/iommu.c116
1 files changed, 0 insertions, 116 deletions
diff --git a/arch/powerpc/platforms/celleb/iommu.c b/arch/powerpc/platforms/celleb/iommu.c
deleted file mode 100644
index 3eda42381224..000000000000
--- a/arch/powerpc/platforms/celleb/iommu.c
+++ /dev/null
@@ -1,116 +0,0 @@
1/*
2 * Support for IOMMU on Celleb platform.
3 *
4 * (C) Copyright 2006-2007 TOSHIBA CORPORATION
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 */
20
21#include <linux/kernel.h>
22#include <linux/init.h>
23#include <linux/dma-mapping.h>
24#include <linux/pci.h>
25#include <linux/of_platform.h>
26
27#include <asm/machdep.h>
28
29#include "../cell/beat_wrapper.h"
30
31#define DMA_FLAGS 0xf800000000000000UL /* r/w permitted, coherency required,
32 strongest order */
33
34static int __init find_dma_window(u64 *io_space_id, u64 *ioid,
35 u64 *base, u64 *size, u64 *io_page_size)
36{
37 struct device_node *dn;
38 const unsigned long *dma_window;
39
40 for_each_node_by_type(dn, "ioif") {
41 dma_window = of_get_property(dn, "toshiba,dma-window", NULL);
42 if (dma_window) {
43 *io_space_id = (dma_window[0] >> 32) & 0xffffffffUL;
44 *ioid = dma_window[0] & 0x7ffUL;
45 *base = dma_window[1];
46 *size = dma_window[2];
47 *io_page_size = 1 << dma_window[3];
48 of_node_put(dn);
49 return 1;
50 }
51 }
52 return 0;
53}
54
55static unsigned long celleb_dma_direct_offset;
56
57static void __init celleb_init_direct_mapping(void)
58{
59 u64 lpar_addr, io_addr;
60 u64 io_space_id, ioid, dma_base, dma_size, io_page_size;
61
62 if (!find_dma_window(&io_space_id, &ioid, &dma_base, &dma_size,
63 &io_page_size)) {
64 pr_info("No dma window found !\n");
65 return;
66 }
67
68 for (lpar_addr = 0; lpar_addr < dma_size; lpar_addr += io_page_size) {
69 io_addr = lpar_addr + dma_base;
70 (void)beat_put_iopte(io_space_id, io_addr, lpar_addr,
71 ioid, DMA_FLAGS);
72 }
73
74 celleb_dma_direct_offset = dma_base;
75}
76
77static void celleb_dma_dev_setup(struct device *dev)
78{
79 dev->archdata.dma_ops = get_pci_dma_ops();
80 dev->archdata.dma_data = (void *)celleb_dma_direct_offset;
81}
82
83static void celleb_pci_dma_dev_setup(struct pci_dev *pdev)
84{
85 celleb_dma_dev_setup(&pdev->dev);
86}
87
88static int celleb_of_bus_notify(struct notifier_block *nb,
89 unsigned long action, void *data)
90{
91 struct device *dev = data;
92
93 /* We are only intereted in device addition */
94 if (action != BUS_NOTIFY_ADD_DEVICE)
95 return 0;
96
97 celleb_dma_dev_setup(dev);
98
99 return 0;
100}
101
102static struct notifier_block celleb_of_bus_notifier = {
103 .notifier_call = celleb_of_bus_notify
104};
105
106static int __init celleb_init_iommu(void)
107{
108 celleb_init_direct_mapping();
109 set_pci_dma_ops(&dma_direct_ops);
110 ppc_md.pci_dma_dev_setup = celleb_pci_dma_dev_setup;
111 bus_register_notifier(&of_platform_bus_type, &celleb_of_bus_notifier);
112
113 return 0;
114}
115
116machine_arch_initcall(celleb_beat, celleb_init_iommu);