diff options
author | Ishizaki Kou <kou.ishizaki@toshiba.co.jp> | 2008-04-24 05:28:48 -0400 |
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committer | Paul Mackerras <paulus@samba.org> | 2008-04-24 07:08:13 -0400 |
commit | 8ae6e30d2d6b4a7a45bb0d4fa4ecd56e65d24740 (patch) | |
tree | fffced1db7d6a42aecafae84b2cd3a78d159c157 /arch/powerpc/platforms/celleb/iommu.c | |
parent | 5a96dfe84b53cc05abe8c7f4d1dfd7b03a3e314a (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.c | 116 |
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 | |||
34 | static 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 | |||
55 | static unsigned long celleb_dma_direct_offset; | ||
56 | |||
57 | static 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 | |||
77 | static 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 | |||
83 | static void celleb_pci_dma_dev_setup(struct pci_dev *pdev) | ||
84 | { | ||
85 | celleb_dma_dev_setup(&pdev->dev); | ||
86 | } | ||
87 | |||
88 | static 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 | |||
102 | static struct notifier_block celleb_of_bus_notifier = { | ||
103 | .notifier_call = celleb_of_bus_notify | ||
104 | }; | ||
105 | |||
106 | static 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 | |||
116 | machine_arch_initcall(celleb_beat, celleb_init_iommu); | ||