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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2006-11-11 01:25:02 -0500
committerPaul Mackerras <paulus@samba.org>2006-12-04 04:38:40 -0500
commit12d04eef927bf61328af2c7cbe756c96f98ac3bf (patch)
tree18865369100e9059c7e883dec93ea67f7b52a287
parent7c719871ff4d5f15b71f0138d08b758281b58631 (diff)
[POWERPC] Refactor 64 bits DMA operations
This patch completely refactors DMA operations for 64 bits powerpc. 32 bits is untouched for now. We use the new dev_archdata structure to add the dma operations pointer and associated data to struct device. While at it, we also add the OF node pointer and numa node. In the future, we might want to look into merging that with pci_dn as well. The old vio, pci-iommu and pci-direct DMA ops are gone. They are now replaced by a set of generic iommu and direct DMA ops (non PCI specific) that can be used by bus types. The toplevel implementation is now inline. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat
-rw-r--r--arch/powerpc/kernel/Makefile3
-rw-r--r--arch/powerpc/kernel/dma_64.c240
-rw-r--r--arch/powerpc/kernel/ibmebus.c6
-rw-r--r--arch/powerpc/kernel/iommu.c6
-rw-r--r--arch/powerpc/kernel/of_platform.c9
-rw-r--r--arch/powerpc/kernel/pci_64.c26
-rw-r--r--arch/powerpc/kernel/pci_direct_iommu.c98
-rw-r--r--arch/powerpc/kernel/pci_iommu.c164
-rw-r--r--arch/powerpc/kernel/setup_64.c1
-rw-r--r--arch/powerpc/kernel/vio.c94
-rw-r--r--arch/powerpc/platforms/cell/iommu.c21
-rw-r--r--arch/powerpc/platforms/iseries/iommu.c12
-rw-r--r--arch/powerpc/platforms/iseries/pci.c2
-rw-r--r--arch/powerpc/platforms/pasemi/setup.c16
-rw-r--r--arch/powerpc/platforms/pseries/iommu.c90
-rw-r--r--arch/powerpc/platforms/pseries/pci_dlpar.c4
-rw-r--r--arch/powerpc/sysdev/dart_iommu.c31
-rw-r--r--include/asm-powerpc/device.h19
-rw-r--r--include/asm-powerpc/dma-mapping.h180
-rw-r--r--include/asm-powerpc/ibmebus.h1
-rw-r--r--include/asm-powerpc/iommu.h20
-rw-r--r--include/asm-powerpc/iseries/iommu.h4
-rw-r--r--include/asm-powerpc/machdep.h4
-rw-r--r--include/asm-powerpc/of_device.h2
-rw-r--r--include/asm-powerpc/pci.h8
-rw-r--r--include/asm-powerpc/vio.h1
26 files changed, 451 insertions, 611 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 04fdbe568d7b..eba8d118e214 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -62,8 +62,7 @@ obj-$(CONFIG_PPC_UDBG_16550) += legacy_serial.o udbg_16550.o
62module-$(CONFIG_PPC64) += module_64.o 62module-$(CONFIG_PPC64) += module_64.o
63obj-$(CONFIG_MODULES) += $(module-y) 63obj-$(CONFIG_MODULES) += $(module-y)
64 64
65pci64-$(CONFIG_PPC64) += pci_64.o pci_dn.o pci_iommu.o \ 65pci64-$(CONFIG_PPC64) += pci_64.o pci_dn.o iomap.o
66 pci_direct_iommu.o iomap.o
67pci32-$(CONFIG_PPC32) := pci_32.o 66pci32-$(CONFIG_PPC32) := pci_32.o
68obj-$(CONFIG_PCI) += $(pci64-y) $(pci32-y) 67obj-$(CONFIG_PCI) += $(pci64-y) $(pci32-y)
69kexec-$(CONFIG_PPC64) := machine_kexec_64.o 68kexec-$(CONFIG_PPC64) := machine_kexec_64.o
diff --git a/arch/powerpc/kernel/dma_64.c b/arch/powerpc/kernel/dma_64.c
index 6c168f6ea142..4e6551199782 100644
--- a/arch/powerpc/kernel/dma_64.c
+++ b/arch/powerpc/kernel/dma_64.c
@@ -1,151 +1,185 @@
1/* 1/*
2 * Copyright (C) 2004 IBM Corporation 2 * Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corporation
3 * 3 *
4 * Implements the generic device dma API for ppc64. Handles 4 * Provide default implementations of the DMA mapping callbacks for
5 * the pci and vio busses 5 * directly mapped busses and busses using the iommu infrastructure
6 */ 6 */
7 7
8#include <linux/device.h> 8#include <linux/device.h>
9#include <linux/dma-mapping.h> 9#include <linux/dma-mapping.h>
10/* Include the busses we support */
11#include <linux/pci.h>
12#include <asm/vio.h>
13#include <asm/ibmebus.h>
14#include <asm/scatterlist.h>
15#include <asm/bug.h> 10#include <asm/bug.h>
11#include <asm/iommu.h>
12#include <asm/abs_addr.h>
16 13
17static struct dma_mapping_ops *get_dma_ops(struct device *dev) 14/*
18{ 15 * Generic iommu implementation
19#ifdef CONFIG_PCI 16 */
20 if (dev->bus == &pci_bus_type)
21 return &pci_dma_ops;
22#endif
23#ifdef CONFIG_IBMVIO
24 if (dev->bus == &vio_bus_type)
25 return &vio_dma_ops;
26#endif
27#ifdef CONFIG_IBMEBUS
28 if (dev->bus == &ibmebus_bus_type)
29 return &ibmebus_dma_ops;
30#endif
31 return NULL;
32}
33 17
34int dma_supported(struct device *dev, u64 mask) 18static inline unsigned long device_to_mask(struct device *dev)
35{ 19{
36 struct dma_mapping_ops *dma_ops = get_dma_ops(dev); 20 if (dev->dma_mask && *dev->dma_mask)
21 return *dev->dma_mask;
22 /* Assume devices without mask can take 32 bit addresses */
23 return 0xfffffffful;
24}
37 25
38 BUG_ON(!dma_ops);
39 26
40 return dma_ops->dma_supported(dev, mask); 27/* Allocates a contiguous real buffer and creates mappings over it.
28 * Returns the virtual address of the buffer and sets dma_handle
29 * to the dma address (mapping) of the first page.
30 */
31static void *dma_iommu_alloc_coherent(struct device *dev, size_t size,
32 dma_addr_t *dma_handle, gfp_t flag)
33{
34 return iommu_alloc_coherent(dev->archdata.dma_data, size, dma_handle,
35 device_to_mask(dev), flag,
36 dev->archdata.numa_node);
41} 37}
42EXPORT_SYMBOL(dma_supported);
43 38
44int dma_set_mask(struct device *dev, u64 dma_mask) 39static void dma_iommu_free_coherent(struct device *dev, size_t size,
40 void *vaddr, dma_addr_t dma_handle)
45{ 41{
46#ifdef CONFIG_PCI 42 iommu_free_coherent(dev->archdata.dma_data, size, vaddr, dma_handle);
47 if (dev->bus == &pci_bus_type)
48 return pci_set_dma_mask(to_pci_dev(dev), dma_mask);
49#endif
50#ifdef CONFIG_IBMVIO
51 if (dev->bus == &vio_bus_type)
52 return -EIO;
53#endif /* CONFIG_IBMVIO */
54#ifdef CONFIG_IBMEBUS
55 if (dev->bus == &ibmebus_bus_type)
56 return -EIO;
57#endif
58 BUG();
59 return 0;
60} 43}
61EXPORT_SYMBOL(dma_set_mask);
62 44
63void *dma_alloc_coherent(struct device *dev, size_t size, 45/* Creates TCEs for a user provided buffer. The user buffer must be
64 dma_addr_t *dma_handle, gfp_t flag) 46 * contiguous real kernel storage (not vmalloc). The address of the buffer
47 * passed here is the kernel (virtual) address of the buffer. The buffer
48 * need not be page aligned, the dma_addr_t returned will point to the same
49 * byte within the page as vaddr.
50 */
51static dma_addr_t dma_iommu_map_single(struct device *dev, void *vaddr,
52 size_t size,
53 enum dma_data_direction direction)
65{ 54{
66 struct dma_mapping_ops *dma_ops = get_dma_ops(dev); 55 return iommu_map_single(dev->archdata.dma_data, vaddr, size,
67 56 device_to_mask(dev), direction);
68 BUG_ON(!dma_ops);
69
70 return dma_ops->alloc_coherent(dev, size, dma_handle, flag);
71} 57}
72EXPORT_SYMBOL(dma_alloc_coherent);
73 58
74void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, 59
75 dma_addr_t dma_handle) 60static void dma_iommu_unmap_single(struct device *dev, dma_addr_t dma_handle,
61 size_t size,
62 enum dma_data_direction direction)
76{ 63{
77 struct dma_mapping_ops *dma_ops = get_dma_ops(dev); 64 iommu_unmap_single(dev->archdata.dma_data, dma_handle, size, direction);
65}
78 66
79 BUG_ON(!dma_ops);
80 67
81 dma_ops->free_coherent(dev, size, cpu_addr, dma_handle); 68static int dma_iommu_map_sg(struct device *dev, struct scatterlist *sglist,
69 int nelems, enum dma_data_direction direction)
70{
71 return iommu_map_sg(dev->archdata.dma_data, sglist, nelems,
72 device_to_mask(dev), direction);
82} 73}
83EXPORT_SYMBOL(dma_free_coherent);
84 74
85dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, size_t size, 75static void dma_iommu_unmap_sg(struct device *dev, struct scatterlist *sglist,
86 enum dma_data_direction direction) 76 int nelems, enum dma_data_direction direction)
87{ 77{
88 struct dma_mapping_ops *dma_ops = get_dma_ops(dev); 78 iommu_unmap_sg(dev->archdata.dma_data, sglist, nelems, direction);
89
90 BUG_ON(!dma_ops);
91
92 return dma_ops->map_single(dev, cpu_addr, size, direction);
93} 79}
94EXPORT_SYMBOL(dma_map_single);
95 80
96void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, 81/* We support DMA to/from any memory page via the iommu */
97 enum dma_data_direction direction) 82static int dma_iommu_dma_supported(struct device *dev, u64 mask)
98{ 83{
99 struct dma_mapping_ops *dma_ops = get_dma_ops(dev); 84 struct iommu_table *tbl = dev->archdata.dma_data;
100 85
101 BUG_ON(!dma_ops); 86 if (!tbl || tbl->it_offset > mask) {
102 87 printk(KERN_INFO
103 dma_ops->unmap_single(dev, dma_addr, size, direction); 88 "Warning: IOMMU offset too big for device mask\n");
89 if (tbl)
90 printk(KERN_INFO
91 "mask: 0x%08lx, table offset: 0x%08lx\n",
92 mask, tbl->it_offset);
93 else
94 printk(KERN_INFO "mask: 0x%08lx, table unavailable\n",
95 mask);
96 return 0;
97 } else
98 return 1;
104} 99}
105EXPORT_SYMBOL(dma_unmap_single);
106 100
107dma_addr_t dma_map_page(struct device *dev, struct page *page, 101struct dma_mapping_ops dma_iommu_ops = {
108 unsigned long offset, size_t size, 102 .alloc_coherent = dma_iommu_alloc_coherent,
109 enum dma_data_direction direction) 103 .free_coherent = dma_iommu_free_coherent,
110{ 104 .map_single = dma_iommu_map_single,
111 struct dma_mapping_ops *dma_ops = get_dma_ops(dev); 105 .unmap_single = dma_iommu_unmap_single,
106 .map_sg = dma_iommu_map_sg,
107 .unmap_sg = dma_iommu_unmap_sg,
108 .dma_supported = dma_iommu_dma_supported,
109};
110EXPORT_SYMBOL(dma_iommu_ops);
112 111
113 BUG_ON(!dma_ops); 112/*
113 * Generic direct DMA implementation
114 */
114 115
115 return dma_ops->map_single(dev, page_address(page) + offset, size, 116static void *dma_direct_alloc_coherent(struct device *dev, size_t size,
116 direction); 117 dma_addr_t *dma_handle, gfp_t flag)
118{
119 void *ret;
120
121 /* TODO: Maybe use the numa node here too ? */
122 ret = (void *)__get_free_pages(flag, get_order(size));
123 if (ret != NULL) {
124 memset(ret, 0, size);
125 *dma_handle = virt_to_abs(ret);
126 }
127 return ret;
117} 128}
118EXPORT_SYMBOL(dma_map_page);
119 129
120void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, 130static void dma_direct_free_coherent(struct device *dev, size_t size,
121 enum dma_data_direction direction) 131 void *vaddr, dma_addr_t dma_handle)
122{ 132{
123 struct dma_mapping_ops *dma_ops = get_dma_ops(dev); 133 free_pages((unsigned long)vaddr, get_order(size));
134}
124 135
125 BUG_ON(!dma_ops); 136static dma_addr_t dma_direct_map_single(struct device *dev, void *ptr,
137 size_t size,
138 enum dma_data_direction direction)
139{
140 return virt_to_abs(ptr);
141}
126 142
127 dma_ops->unmap_single(dev, dma_address, size, direction); 143static void dma_direct_unmap_single(struct device *dev, dma_addr_t dma_addr,
144 size_t size,
145 enum dma_data_direction direction)
146{
128} 147}
129EXPORT_SYMBOL(dma_unmap_page);
130 148
131int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, 149static int dma_direct_map_sg(struct device *dev, struct scatterlist *sg,
132 enum dma_data_direction direction) 150 int nents, enum dma_data_direction direction)
133{ 151{
134 struct dma_mapping_ops *dma_ops = get_dma_ops(dev); 152 int i;
135 153
136 BUG_ON(!dma_ops); 154 for (i = 0; i < nents; i++, sg++) {
155 sg->dma_address = page_to_phys(sg->page) + sg->offset;
156 sg->dma_length = sg->length;
157 }
137 158
138 return dma_ops->map_sg(dev, sg, nents, direction); 159 return nents;
139} 160}
140EXPORT_SYMBOL(dma_map_sg);
141 161
142void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, 162static void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sg,
143 enum dma_data_direction direction) 163 int nents, enum dma_data_direction direction)
144{ 164{
145 struct dma_mapping_ops *dma_ops = get_dma_ops(dev); 165}
146
147 BUG_ON(!dma_ops);
148 166
149 dma_ops->unmap_sg(dev, sg, nhwentries, direction); 167static int dma_direct_dma_supported(struct device *dev, u64 mask)
168{
169 /* Could be improved to check for memory though it better be
170 * done via some global so platforms can set the limit in case
171 * they have limited DMA windows
172 */
173 return mask >= DMA_32BIT_MASK;
150} 174}
151EXPORT_SYMBOL(dma_unmap_sg); 175
176struct dma_mapping_ops dma_direct_ops = {
177 .alloc_coherent = dma_direct_alloc_coherent,
178 .free_coherent = dma_direct_free_coherent,
179 .map_single = dma_direct_map_single,
180 .unmap_single = dma_direct_unmap_single,
181 .map_sg = dma_direct_map_sg,
182 .unmap_sg = dma_direct_unmap_sg,
183 .dma_supported = dma_direct_dma_supported,
184};
185EXPORT_SYMBOL(dma_direct_ops);
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index 39db7a3affe1..8e515797de6a 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -112,7 +112,7 @@ static int ibmebus_dma_supported(struct device *dev, u64 mask)
112 return 1; 112 return 1;
113} 113}
114 114
115struct dma_mapping_ops ibmebus_dma_ops = { 115static struct dma_mapping_ops ibmebus_dma_ops = {
116 .alloc_coherent = ibmebus_alloc_coherent, 116 .alloc_coherent = ibmebus_alloc_coherent,
117 .free_coherent = ibmebus_free_coherent, 117 .free_coherent = ibmebus_free_coherent,
118 .map_single = ibmebus_map_single, 118 .map_single = ibmebus_map_single,
@@ -176,6 +176,10 @@ static struct ibmebus_dev* __devinit ibmebus_register_device_common(
176 dev->ofdev.dev.bus = &ibmebus_bus_type; 176 dev->ofdev.dev.bus = &ibmebus_bus_type;
177 dev->ofdev.dev.release = ibmebus_dev_release; 177 dev->ofdev.dev.release = ibmebus_dev_release;
178 178
179 dev->ofdev.dev.archdata.of_node = dev->ofdev.node;
180 dev->ofdev.dev.archdata.dma_ops = &ibmebus_dma_ops;
181 dev->ofdev.dev.archdata.numa_node = of_node_to_nid(dev->ofdev.node);
182
179 /* An ibmebusdev is based on a of_device. We have to change the 183 /* An ibmebusdev is based on a of_device. We have to change the
180 * bus type to use our own DMA mapping operations. 184 * bus type to use our own DMA mapping operations.
181 */ 185 */
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index ba6b7256084b..95edad4faf26 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -258,9 +258,9 @@ static void iommu_free(struct iommu_table *tbl, dma_addr_t dma_addr,
258 spin_unlock_irqrestore(&(tbl->it_lock), flags); 258 spin_unlock_irqrestore(&(tbl->it_lock), flags);
259} 259}
260 260
261int iommu_map_sg(struct device *dev, struct iommu_table *tbl, 261int iommu_map_sg(struct iommu_table *tbl, struct scatterlist *sglist,
262 struct scatterlist *sglist, int nelems, 262 int nelems, unsigned long mask,
263 unsigned long mask, enum dma_data_direction direction) 263 enum dma_data_direction direction)
264{ 264{
265 dma_addr_t dma_next = 0, dma_addr; 265 dma_addr_t dma_next = 0, dma_addr;
266 unsigned long flags; 266 unsigned long flags;
diff --git a/arch/powerpc/kernel/of_platform.c b/arch/powerpc/kernel/of_platform.c
index 25850ade8e68..7a0e77af7c9f 100644
--- a/arch/powerpc/kernel/of_platform.c
+++ b/arch/powerpc/kernel/of_platform.c
@@ -22,7 +22,7 @@
22#include <asm/dcr.h> 22#include <asm/dcr.h>
23#include <asm/of_device.h> 23#include <asm/of_device.h>
24#include <asm/of_platform.h> 24#include <asm/of_platform.h>
25 25#include <asm/topology.h>
26 26
27/* 27/*
28 * The list of OF IDs below is used for matching bus types in the 28 * The list of OF IDs below is used for matching bus types in the
@@ -221,6 +221,13 @@ struct of_device* of_platform_device_create(struct device_node *np,
221 dev->dev.parent = parent; 221 dev->dev.parent = parent;
222 dev->dev.bus = &of_platform_bus_type; 222 dev->dev.bus = &of_platform_bus_type;
223 dev->dev.release = of_release_dev; 223 dev->dev.release = of_release_dev;
224 dev->dev.archdata.of_node = np;
225 dev->dev.archdata.numa_node = of_node_to_nid(np);
226
227 /* We do not fill the DMA ops for platform devices by default.
228 * This is currently the responsibility of the platform code
229 * to do such, possibly using a device notifier
230 */
224 231
225 if (bus_id) 232 if (bus_id)
226 strlcpy(dev->dev.bus_id, bus_id, BUS_ID_SIZE); 233 strlcpy(dev->dev.bus_id, bus_id, BUS_ID_SIZE);
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 9a6bb80a8cd4..88b78484b944 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -61,7 +61,7 @@ void iSeries_pcibios_init(void);
61 61
62LIST_HEAD(hose_list); 62LIST_HEAD(hose_list);
63 63
64struct dma_mapping_ops pci_dma_ops; 64struct dma_mapping_ops *pci_dma_ops;
65EXPORT_SYMBOL(pci_dma_ops); 65EXPORT_SYMBOL(pci_dma_ops);
66 66
67int global_phb_number; /* Global phb counter */ 67int global_phb_number; /* Global phb counter */
@@ -1205,15 +1205,35 @@ void __devinit pcibios_fixup_device_resources(struct pci_dev *dev,
1205} 1205}
1206EXPORT_SYMBOL(pcibios_fixup_device_resources); 1206EXPORT_SYMBOL(pcibios_fixup_device_resources);
1207 1207
1208void __devinit pcibios_setup_new_device(struct pci_dev *dev)
1209{
1210 struct dev_archdata *sd = &dev->dev.archdata;
1211
1212 sd->of_node = pci_device_to_OF_node(dev);
1213
1214 DBG("PCI device %s OF node: %s\n", pci_name(dev),
1215 sd->of_node ? sd->of_node->full_name : "<none>");
1216
1217 sd->dma_ops = pci_dma_ops;
1218#ifdef CONFIG_NUMA
1219 sd->numa_node = pcibus_to_node(dev->bus);
1220#else
1221 sd->numa_node = -1;
1222#endif
1223 if (ppc_md.pci_dma_dev_setup)
1224 ppc_md.pci_dma_dev_setup(dev);
1225}
1226EXPORT_SYMBOL(pcibios_setup_new_device);
1208 1227
1209static void __devinit do_bus_setup(struct pci_bus *bus) 1228static void __devinit do_bus_setup(struct pci_bus *bus)
1210{ 1229{
1211 struct pci_dev *dev; 1230 struct pci_dev *dev;
1212 1231
1213 ppc_md.iommu_bus_setup(bus); 1232 if (ppc_md.pci_dma_bus_setup)
1233 ppc_md.pci_dma_bus_setup(bus);
1214 1234
1215 list_for_each_entry(dev, &bus->devices, bus_list) 1235 list_for_each_entry(dev, &bus->devices, bus_list)
1216 ppc_md.iommu_dev_setup(dev); 1236 pcibios_setup_new_device(dev);
1217 1237
1218 /* Read default IRQs and fixup if necessary */ 1238 /* Read default IRQs and fixup if necessary */
1219 list_for_each_entry(dev, &bus->devices, bus_list) { 1239 list_for_each_entry(dev, &bus->devices, bus_list) {
diff --git a/arch/powerpc/kernel/pci_direct_iommu.c b/arch/powerpc/kernel/pci_direct_iommu.c
deleted file mode 100644
index 72ce082ce738..000000000000
--- a/arch/powerpc/kernel/pci_direct_iommu.c
+++ /dev/null
@@ -1,98 +0,0 @@
1/*
2 * Support for DMA from PCI devices to main memory on
3 * machines without an iommu or with directly addressable
4 * RAM (typically a pmac with 2Gb of RAM or less)
5 *
6 * Copyright (C) 2003 Benjamin Herrenschmidt (benh@kernel.crashing.org)
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
12 */
13
14#include <linux/kernel.h>
15#include <linux/pci.h>
16#include <linux/delay.h>
17#include <linux/string.h>
18#include <linux/init.h>
19#include <linux/bootmem.h>
20#include <linux/mm.h>
21#include <linux/dma-mapping.h>
22
23#include <asm/sections.h>
24#include <asm/io.h>
25#include <asm/prom.h>
26#include <asm/pci-bridge.h>
27#include <asm/machdep.h>
28#include <asm/pmac_feature.h>
29#include <asm/abs_addr.h>
30#include <asm/ppc-pci.h>
31
32static void *pci_direct_alloc_coherent(struct device *hwdev, size_t size,
33 dma_addr_t *dma_handle, gfp_t flag)
34{
35 void *ret;
36
37 ret = (void *)__get_free_pages(flag, get_order(size));
38 if (ret != NULL) {
39 memset(ret, 0, size);
40 *dma_handle = virt_to_abs(ret);
41 }
42 return ret;
43}
44
45static void pci_direct_free_coherent(struct device *hwdev, size_t size,
46 void *vaddr, dma_addr_t dma_handle)
47{
48 free_pages((unsigned long)vaddr, get_order(size));
49}
50
51static dma_addr_t pci_direct_map_single(struct device *hwdev, void *ptr,
52 size_t size, enum dma_data_direction direction)
53{
54 return virt_to_abs(ptr);
55}
56
57static void pci_direct_unmap_single(struct device *hwdev, dma_addr_t dma_addr,
58 size_t size, enum dma_data_direction direction)
59{
60}
61
62static int pci_direct_map_sg(struct device *hwdev, struct scatterlist *sg,
63 int nents, enum dma_data_direction direction)
64{
65 int i;
66
67 for (i = 0; i < nents; i++, sg++) {
68 sg->dma_address = page_to_phys(sg->page) + sg->offset;
69 sg->dma_length = sg->length;
70 }
71
72 return nents;
73}
74
75static void pci_direct_unmap_sg(struct device *hwdev, struct scatterlist *sg,
76 int nents, enum dma_data_direction direction)
77{
78}
79
80static int pci_direct_dma_supported(struct device *dev, u64 mask)
81{
82 return mask < 0x100000000ull;
83}
84
85static struct dma_mapping_ops pci_direct_ops = {
86 .alloc_coherent = pci_direct_alloc_coherent,
87 .free_coherent = pci_direct_free_coherent,
88 .map_single = pci_direct_map_single,
89 .unmap_single = pci_direct_unmap_single,
90 .map_sg = pci_direct_map_sg,
91 .unmap_sg = pci_direct_unmap_sg,
92 .dma_supported = pci_direct_dma_supported,
93};
94
95void __init pci_direct_iommu_init(void)
96{
97 pci_dma_ops = pci_direct_ops;
98}
diff --git a/arch/powerpc/kernel/pci_iommu.c b/arch/powerpc/kernel/pci_iommu.c
deleted file mode 100644
index 0688b2534acb..000000000000
--- a/arch/powerpc/kernel/pci_iommu.c
+++ /dev/null
@@ -1,164 +0,0 @@
1/*
2 * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
3 *
4 * Rewrite, cleanup, new allocation schemes:
5 * Copyright (C) 2004 Olof Johansson, IBM Corporation
6 *
7 * Dynamic DMA mapping support, platform-independent parts.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24
25#include <linux/init.h>
26#include <linux/types.h>
27#include <linux/slab.h>
28#include <linux/mm.h>
29#include <linux/spinlock.h>
30#include <linux/string.h>
31#include <linux/pci.h>
32#include <linux/dma-mapping.h>
33#include <asm/io.h>
34#include <asm/prom.h>
35#include <asm/iommu.h>
36#include <asm/pci-bridge.h>
37#include <asm/machdep.h>
38#include <asm/ppc-pci.h>
39
40/*
41 * We can use ->sysdata directly and avoid the extra work in
42 * pci_device_to_OF_node since ->sysdata will have been initialised
43 * in the iommu init code for all devices.
44 */
45#define PCI_GET_DN(dev) ((struct device_node *)((dev)->sysdata))
46
47static inline struct iommu_table *device_to_table(struct device *hwdev)
48{
49 struct pci_dev *pdev;
50
51 if (!hwdev) {
52 pdev = ppc64_isabridge_dev;
53 if (!pdev)
54 return NULL;
55 } else
56 pdev = to_pci_dev(hwdev);
57
58 return PCI_DN(PCI_GET_DN(pdev))->iommu_table;
59}
60
61
62static inline unsigned long device_to_mask(struct device *hwdev)
63{
64 struct pci_dev *pdev;
65
66 if (!hwdev) {
67 pdev = ppc64_isabridge_dev;
68 if (!pdev) /* This is the best guess we can do */
69 return 0xfffffffful;
70 } else
71 pdev = to_pci_dev(hwdev);
72
73 if (pdev->dma_mask)
74 return pdev->dma_mask;
75
76 /* Assume devices without mask can take 32 bit addresses */
77 return 0xfffffffful;
78}
79
80
81/* Allocates a contiguous real buffer and creates mappings over it.
82 * Returns the virtual address of the buffer and sets dma_handle
83 * to the dma address (mapping) of the first page.
84 */
85static void *pci_iommu_alloc_coherent(struct device *hwdev, size_t size,
86 dma_addr_t *dma_handle, gfp_t flag)
87{
88 return iommu_alloc_coherent(device_to_table(hwdev), size, dma_handle,
89 device_to_mask(hwdev), flag,
90 pcibus_to_node(to_pci_dev(hwdev)->bus));
91}
92
93static void pci_iommu_free_coherent(struct device *hwdev, size_t size,
94 void *vaddr, dma_addr_t dma_handle)
95{
96 iommu_free_coherent(device_to_table(hwdev), size, vaddr, dma_handle);
97}
98
99/* Creates TCEs for a user provided buffer. The user buffer must be
100 * contiguous real kernel storage (not vmalloc). The address of the buffer
101 * passed here is the kernel (virtual) address of the buffer. The buffer
102 * need not be page aligned, the dma_addr_t returned will point to the same
103 * byte within the page as vaddr.
104 */
105static dma_addr_t pci_iommu_map_single(struct device *hwdev, void *vaddr,
106 size_t size, enum dma_data_direction direction)
107{
108 return iommu_map_single(device_to_table(hwdev), vaddr, size,
109 device_to_mask(hwdev), direction);
110}
111
112
113static void pci_iommu_unmap_single(struct device *hwdev, dma_addr_t dma_handle,
114 size_t size, enum dma_data_direction direction)
115{
116 iommu_unmap_single(device_to_table(hwdev), dma_handle, size, direction);
117}
118
119
120static int pci_iommu_map_sg(struct device *pdev, struct scatterlist *sglist,
121 int nelems, enum dma_data_direction direction)
122{
123 return iommu_map_sg(pdev, device_to_table(pdev), sglist,
124 nelems, device_to_mask(pdev), direction);
125}
126
127static void pci_iommu_unmap_sg(struct device *pdev, struct scatterlist *sglist,
128 int nelems, enum dma_data_direction direction)
129{
130 iommu_unmap_sg(device_to_table(pdev), sglist, nelems, direction);
131}
132
133/* We support DMA to/from any memory page via the iommu */
134static int pci_iommu_dma_supported(struct device *dev, u64 mask)
135{
136 struct iommu_table *tbl = device_to_table(dev);
137
138 if (!tbl || tbl->it_offset > mask) {
139 printk(KERN_INFO "Warning: IOMMU table offset too big for device mask\n");
140 if (tbl)
141 printk(KERN_INFO "mask: 0x%08lx, table offset: 0x%08lx\n",
142 mask, tbl->it_offset);
143 else
144 printk(KERN_INFO "mask: 0x%08lx, table unavailable\n",
145 mask);
146 return 0;
147 } else
148 return 1;
149}
150
151struct dma_mapping_ops pci_iommu_ops = {
152 .alloc_coherent = pci_iommu_alloc_coherent,
153 .free_coherent = pci_iommu_free_coherent,
154 .map_single = pci_iommu_map_single,
155 .unmap_single = pci_iommu_unmap_single,
156 .map_sg = pci_iommu_map_sg,
157 .unmap_sg = pci_iommu_unmap_sg,
158 .dma_supported = pci_iommu_dma_supported,
159};
160
161void pci_iommu_init(void)
162{
163 pci_dma_ops = pci_iommu_ops;
164}
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index b0f1c82df994..f7ad64acf47e 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -33,6 +33,7 @@
33#include <linux/serial.h> 33#include <linux/serial.h>
34#include <linux/serial_8250.h> 34#include <linux/serial_8250.h>
35#include <linux/bootmem.h> 35#include <linux/bootmem.h>
36#include <linux/pci.h>
36#include <asm/io.h> 37#include <asm/io.h>
37#include <asm/kdump.h> 38#include <asm/kdump.h>
38#include <asm/prom.h> 39#include <asm/prom.h>
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index ed007878d1bf..a80f8f1d2e5d 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -81,15 +81,15 @@ static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev)
81 struct iommu_table *tbl; 81 struct iommu_table *tbl;
82 unsigned long offset, size; 82 unsigned long offset, size;
83 83
84 dma_window = get_property(dev->dev.platform_data, 84 dma_window = get_property(dev->dev.archdata.of_node,
85 "ibm,my-dma-window", NULL); 85 "ibm,my-dma-window", NULL);
86 if (!dma_window) 86 if (!dma_window)
87 return NULL; 87 return NULL;
88 88
89 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL); 89 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
90 90
91 of_parse_dma_window(dev->dev.platform_data, dma_window, 91 of_parse_dma_window(dev->dev.archdata.of_node, dma_window,
92 &tbl->it_index, &offset, &size); 92 &tbl->it_index, &offset, &size);
93 93
94 /* TCE table size - measured in tce entries */ 94 /* TCE table size - measured in tce entries */
95 tbl->it_size = size >> IOMMU_PAGE_SHIFT; 95 tbl->it_size = size >> IOMMU_PAGE_SHIFT;
@@ -117,7 +117,8 @@ static const struct vio_device_id *vio_match_device(
117{ 117{
118 while (ids->type[0] != '\0') { 118 while (ids->type[0] != '\0') {
119 if ((strncmp(dev->type, ids->type, strlen(ids->type)) == 0) && 119 if ((strncmp(dev->type, ids->type, strlen(ids->type)) == 0) &&
120 device_is_compatible(dev->dev.platform_data, ids->compat)) 120 device_is_compatible(dev->dev.archdata.of_node,
121 ids->compat))
121 return ids; 122 return ids;
122 ids++; 123 ids++;
123 } 124 }
@@ -198,9 +199,9 @@ EXPORT_SYMBOL(vio_unregister_driver);
198/* vio_dev refcount hit 0 */ 199/* vio_dev refcount hit 0 */
199static void __devinit vio_dev_release(struct device *dev) 200static void __devinit vio_dev_release(struct device *dev)
200{ 201{
201 if (dev->platform_data) { 202 if (dev->archdata.of_node) {
202 /* XXX free TCE table */ 203 /* XXX should free TCE table */
203 of_node_put(dev->platform_data); 204 of_node_put(dev->archdata.of_node);
204 } 205 }
205 kfree(to_vio_dev(dev)); 206 kfree(to_vio_dev(dev));
206} 207}
@@ -210,7 +211,7 @@ static void __devinit vio_dev_release(struct device *dev)
210 * @of_node: The OF node for this device. 211 * @of_node: The OF node for this device.
211 * 212 *
212 * Creates and initializes a vio_dev structure from the data in 213 * Creates and initializes a vio_dev structure from the data in
213 * of_node (dev.platform_data) and adds it to the list of virtual devices. 214 * of_node and adds it to the list of virtual devices.
214 * Returns a pointer to the created vio_dev or NULL if node has 215 * Returns a pointer to the created vio_dev or NULL if node has
215 * NULL device_type or compatible fields. 216 * NULL device_type or compatible fields.
216 */ 217 */
@@ -240,8 +241,6 @@ struct vio_dev * __devinit vio_register_device_node(struct device_node *of_node)
240 if (viodev == NULL) 241 if (viodev == NULL)
241 return NULL; 242 return NULL;
242 243
243 viodev->dev.platform_data = of_node_get(of_node);
244
245 viodev->irq = irq_of_parse_and_map(of_node, 0); 244 viodev->irq = irq_of_parse_and_map(of_node, 0);
246 245
247 snprintf(viodev->dev.bus_id, BUS_ID_SIZE, "%x", *unit_address); 246 snprintf(viodev->dev.bus_id, BUS_ID_SIZE, "%x", *unit_address);
@@ -254,7 +253,10 @@ struct vio_dev * __devinit vio_register_device_node(struct device_node *of_node)
254 if (unit_address != NULL) 253 if (unit_address != NULL)
255 viodev->unit_address = *unit_address; 254 viodev->unit_address = *unit_address;
256 } 255 }
257 viodev->iommu_table = vio_build_iommu_table(viodev); 256 viodev->dev.archdata.of_node = of_node_get(of_node);
257 viodev->dev.archdata.dma_ops = &dma_iommu_ops;
258 viodev->dev.archdata.dma_data = vio_build_iommu_table(viodev);
259 viodev->dev.archdata.numa_node = of_node_to_nid(of_node);
258 260
259 /* init generic 'struct device' fields: */ 261 /* init generic 'struct device' fields: */
260 viodev->dev.parent = &vio_bus_device.dev; 262 viodev->dev.parent = &vio_bus_device.dev;
@@ -285,10 +287,11 @@ static int __init vio_bus_init(void)
285#ifdef CONFIG_PPC_ISERIES 287#ifdef CONFIG_PPC_ISERIES
286 if (firmware_has_feature(FW_FEATURE_ISERIES)) { 288 if (firmware_has_feature(FW_FEATURE_ISERIES)) {
287 iommu_vio_init(); 289 iommu_vio_init();
288 vio_bus_device.iommu_table = &vio_iommu_table; 290 vio_bus_device.dev.archdata.dma_ops = &dma_iommu_ops;
291 vio_bus_device.dev.archdata.dma_data = &vio_iommu_table;
289 iSeries_vio_dev = &vio_bus_device.dev; 292 iSeries_vio_dev = &vio_bus_device.dev;
290 } 293 }
291#endif 294#endif /* CONFIG_PPC_ISERIES */
292 295
293 err = bus_register(&vio_bus_type); 296 err = bus_register(&vio_bus_type);
294 if (err) { 297 if (err) {
@@ -336,7 +339,7 @@ static ssize_t name_show(struct device *dev,
336static ssize_t devspec_show(struct device *dev, 339static ssize_t devspec_show(struct device *dev,
337 struct device_attribute *attr, char *buf) 340 struct device_attribute *attr, char *buf)
338{ 341{
339 struct device_node *of_node = dev->platform_data; 342 struct device_node *of_node = dev->archdata.of_node;
340 343
341 return sprintf(buf, "%s\n", of_node ? of_node->full_name : "none"); 344 return sprintf(buf, "%s\n", of_node ? of_node->full_name : "none");
342} 345}
@@ -353,62 +356,6 @@ void __devinit vio_unregister_device(struct vio_dev *viodev)
353} 356}
354EXPORT_SYMBOL(vio_unregister_device); 357EXPORT_SYMBOL(vio_unregister_device);
355 358
356static dma_addr_t vio_map_single(struct device *dev, void *vaddr,
357 size_t size, enum dma_data_direction direction)
358{
359 return iommu_map_single(to_vio_dev(dev)->iommu_table, vaddr, size,
360 ~0ul, direction);
361}
362
363static void vio_unmap_single(struct device *dev, dma_addr_t dma_handle,
364 size_t size, enum dma_data_direction direction)
365{
366 iommu_unmap_single(to_vio_dev(dev)->iommu_table, dma_handle, size,
367 direction);
368}
369
370static int vio_map_sg(struct device *dev, struct scatterlist *sglist,
371 int nelems, enum dma_data_direction direction)
372{
373 return iommu_map_sg(dev, to_vio_dev(dev)->iommu_table, sglist,
374 nelems, ~0ul, direction);
375}
376
377static void vio_unmap_sg(struct device *dev, struct scatterlist *sglist,
378 int nelems, enum dma_data_direction direction)
379{
380 iommu_unmap_sg(to_vio_dev(dev)->iommu_table, sglist, nelems, direction);
381}
382
383static void *vio_alloc_coherent(struct device *dev, size_t size,
384 dma_addr_t *dma_handle, gfp_t flag)
385{
386 return iommu_alloc_coherent(to_vio_dev(dev)->iommu_table, size,
387 dma_handle, ~0ul, flag, -1);
388}
389
390static void vio_free_coherent(struct device *dev, size_t size,
391 void *vaddr, dma_addr_t dma_handle)
392{
393 iommu_free_coherent(to_vio_dev(dev)->iommu_table, size, vaddr,
394 dma_handle);
395}
396
397static int vio_dma_supported(struct device *dev, u64 mask)
398{
399 return 1;
400}
401
402struct dma_mapping_ops vio_dma_ops = {
403 .alloc_coherent = vio_alloc_coherent,
404 .free_coherent = vio_free_coherent,
405 .map_single = vio_map_single,
406 .unmap_single = vio_unmap_single,
407 .map_sg = vio_map_sg,
408 .unmap_sg = vio_unmap_sg,
409 .dma_supported = vio_dma_supported,
410};
411
412static int vio_bus_match(struct device *dev, struct device_driver *drv) 359static int vio_bus_match(struct device *dev, struct device_driver *drv)
413{ 360{
414 const struct vio_dev *vio_dev = to_vio_dev(dev); 361 const struct vio_dev *vio_dev = to_vio_dev(dev);
@@ -422,13 +369,14 @@ static int vio_hotplug(struct device *dev, char **envp, int num_envp,
422 char *buffer, int buffer_size) 369 char *buffer, int buffer_size)
423{ 370{
424 const struct vio_dev *vio_dev = to_vio_dev(dev); 371 const struct vio_dev *vio_dev = to_vio_dev(dev);
425 struct device_node *dn = dev->platform_data; 372 struct device_node *dn;
426 const char *cp; 373 const char *cp;
427 int length; 374 int length;
428 375
429 if (!num_envp) 376 if (!num_envp)
430 return -ENOMEM; 377 return -ENOMEM;
431 378
379 dn = dev->archdata.of_node;
432 if (!dn) 380 if (!dn)
433 return -ENODEV; 381 return -ENODEV;
434 cp = get_property(dn, "compatible", &length); 382 cp = get_property(dn, "compatible", &length);
@@ -465,7 +413,7 @@ struct bus_type vio_bus_type = {
465*/ 413*/
466const void *vio_get_attribute(struct vio_dev *vdev, char *which, int *length) 414const void *vio_get_attribute(struct vio_dev *vdev, char *which, int *length)
467{ 415{
468 return get_property(vdev->dev.platform_data, which, length); 416 return get_property(vdev->dev.archdata.of_node, which, length);
469} 417}
470EXPORT_SYMBOL(vio_get_attribute); 418EXPORT_SYMBOL(vio_get_attribute);
471 419
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index aca4c3db0dde..0e6ab8a55ef7 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -255,9 +255,6 @@ static void enable_mapping(void __iomem *base, void __iomem *mmio_base)
255 set_iost_origin(mmio_base); 255 set_iost_origin(mmio_base);
256} 256}
257 257
258static void iommu_dev_setup_null(struct pci_dev *d) { }
259static void iommu_bus_setup_null(struct pci_bus *b) { }
260
261struct cell_iommu { 258struct cell_iommu {
262 unsigned long base; 259 unsigned long base;
263 unsigned long mmio_base; 260 unsigned long mmio_base;
@@ -306,12 +303,15 @@ static void cell_do_map_iommu(struct cell_iommu *iommu,
306 } 303 }
307} 304}
308 305
309static void iommu_devnode_setup(struct device_node *d) 306static void pci_dma_cell_bus_setup(struct pci_bus *b)
310{ 307{
311 const unsigned int *ioid; 308 const unsigned int *ioid;
312 unsigned long map_start, map_size, token; 309 unsigned long map_start, map_size, token;
313 const unsigned long *dma_window; 310 const unsigned long *dma_window;
314 struct cell_iommu *iommu; 311 struct cell_iommu *iommu;
312 struct device_node *d;
313
314 d = pci_bus_to_OF_node(b);
315 315
316 ioid = get_property(d, "ioid", NULL); 316 ioid = get_property(d, "ioid", NULL);
317 if (!ioid) 317 if (!ioid)
@@ -330,12 +330,6 @@ static void iommu_devnode_setup(struct device_node *d)
330 cell_do_map_iommu(iommu, *ioid, map_start, map_size); 330 cell_do_map_iommu(iommu, *ioid, map_start, map_size);
331} 331}
332 332
333static void iommu_bus_setup(struct pci_bus *b)
334{
335 struct device_node *d = (struct device_node *)b->sysdata;
336 iommu_devnode_setup(d);
337}
338
339 333
340static int cell_map_iommu_hardcoded(int num_nodes) 334static int cell_map_iommu_hardcoded(int num_nodes)
341{ 335{
@@ -499,16 +493,13 @@ void cell_init_iommu(void)
499 493
500 if (setup_bus) { 494 if (setup_bus) {
501 pr_debug("%s: IOMMU mapping activated\n", __FUNCTION__); 495 pr_debug("%s: IOMMU mapping activated\n", __FUNCTION__);
502 ppc_md.iommu_dev_setup = iommu_dev_setup_null; 496 ppc_md.pci_dma_bus_setup = pci_dma_cell_bus_setup;
503 ppc_md.iommu_bus_setup = iommu_bus_setup;
504 } else { 497 } else {
505 pr_debug("%s: IOMMU mapping activated, " 498 pr_debug("%s: IOMMU mapping activated, "
506 "no device action necessary\n", __FUNCTION__); 499 "no device action necessary\n", __FUNCTION__);
507 /* Direct I/O, IOMMU off */ 500 /* Direct I/O, IOMMU off */
508 ppc_md.iommu_dev_setup = iommu_dev_setup_null;
509 ppc_md.iommu_bus_setup = iommu_bus_setup_null;
510 } 501 }
511 } 502 }
512 503
513 pci_dma_ops = cell_iommu_ops; 504 pci_dma_ops = &cell_iommu_ops;
514} 505}
diff --git a/arch/powerpc/platforms/iseries/iommu.c b/arch/powerpc/platforms/iseries/iommu.c
index 218817d13c5c..ee0a4e42e4f0 100644
--- a/arch/powerpc/platforms/iseries/iommu.c
+++ b/arch/powerpc/platforms/iseries/iommu.c
@@ -27,6 +27,7 @@
27#include <linux/types.h> 27#include <linux/types.h>
28#include <linux/dma-mapping.h> 28#include <linux/dma-mapping.h>
29#include <linux/list.h> 29#include <linux/list.h>
30#include <linux/pci.h>
30 31
31#include <asm/iommu.h> 32#include <asm/iommu.h>
32#include <asm/tce.h> 33#include <asm/tce.h>
@@ -168,7 +169,7 @@ static struct iommu_table *iommu_table_find(struct iommu_table * tbl)
168} 169}
169 170
170 171
171void iommu_devnode_init_iSeries(struct device_node *dn) 172void iommu_devnode_init_iSeries(struct pci_dev *pdev, struct device_node *dn)
172{ 173{
173 struct iommu_table *tbl; 174 struct iommu_table *tbl;
174 struct pci_dn *pdn = PCI_DN(dn); 175 struct pci_dn *pdn = PCI_DN(dn);
@@ -186,19 +187,14 @@ void iommu_devnode_init_iSeries(struct device_node *dn)
186 pdn->iommu_table = iommu_init_table(tbl, -1); 187 pdn->iommu_table = iommu_init_table(tbl, -1);
187 else 188 else
188 kfree(tbl); 189 kfree(tbl);
190 pdev->dev.archdata.dma_data = pdn->iommu_table;
189} 191}
190#endif 192#endif
191 193
192static void iommu_dev_setup_iSeries(struct pci_dev *dev) { }
193static void iommu_bus_setup_iSeries(struct pci_bus *bus) { }
194
195void iommu_init_early_iSeries(void) 194void iommu_init_early_iSeries(void)
196{ 195{
197 ppc_md.tce_build = tce_build_iSeries; 196 ppc_md.tce_build = tce_build_iSeries;
198 ppc_md.tce_free = tce_free_iSeries; 197 ppc_md.tce_free = tce_free_iSeries;
199 198
200 ppc_md.iommu_dev_setup = iommu_dev_setup_iSeries; 199 pci_dma_ops = &dma_iommu_ops;
201 ppc_md.iommu_bus_setup = iommu_bus_setup_iSeries;
202
203 pci_iommu_init();
204} 200}
diff --git a/arch/powerpc/platforms/iseries/pci.c b/arch/powerpc/platforms/iseries/pci.c
index 4aa165e010d9..a90ae42a7bc2 100644
--- a/arch/powerpc/platforms/iseries/pci.c
+++ b/arch/powerpc/platforms/iseries/pci.c
@@ -253,7 +253,7 @@ void __init iSeries_pci_final_fixup(void)
253 PCI_DN(node)->pcidev = pdev; 253 PCI_DN(node)->pcidev = pdev;
254 allocate_device_bars(pdev); 254 allocate_device_bars(pdev);
255 iSeries_Device_Information(pdev, DeviceCount); 255 iSeries_Device_Information(pdev, DeviceCount);
256 iommu_devnode_init_iSeries(node); 256 iommu_devnode_init_iSeries(pdev, node);
257 } else 257 } else
258 printk("PCI: Device Tree not found for 0x%016lX\n", 258 printk("PCI: Device Tree not found for 0x%016lX\n",
259 (unsigned long)pdev); 259 (unsigned long)pdev);
diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c
index eb2457567f8a..89d6e295dbf7 100644
--- a/arch/powerpc/platforms/pasemi/setup.c
+++ b/arch/powerpc/platforms/pasemi/setup.c
@@ -26,6 +26,7 @@
26#include <linux/kernel.h> 26#include <linux/kernel.h>
27#include <linux/delay.h> 27#include <linux/delay.h>
28#include <linux/console.h> 28#include <linux/console.h>
29#include <linux/pci.h>
29 30
30#include <asm/prom.h> 31#include <asm/prom.h>
31#include <asm/system.h> 32#include <asm/system.h>
@@ -71,6 +72,9 @@ void __init pas_setup_arch(void)
71 /* Setup SMP callback */ 72 /* Setup SMP callback */
72 smp_ops = &pas_smp_ops; 73 smp_ops = &pas_smp_ops;
73#endif 74#endif
75 /* no iommu yet */
76 pci_dma_ops = &dma_direct_ops;
77
74 /* Lookup PCI hosts */ 78 /* Lookup PCI hosts */
75 pas_pci_init(); 79 pas_pci_init();
76 80
@@ -81,17 +85,6 @@ void __init pas_setup_arch(void)
81 printk(KERN_DEBUG "Using default idle loop\n"); 85 printk(KERN_DEBUG "Using default idle loop\n");
82} 86}
83 87
84static void iommu_dev_setup_null(struct pci_dev *dev) { }
85static void iommu_bus_setup_null(struct pci_bus *bus) { }
86
87static void __init pas_init_early(void)
88{
89 /* No iommu code yet */
90 ppc_md.iommu_dev_setup = iommu_dev_setup_null;
91 ppc_md.iommu_bus_setup = iommu_bus_setup_null;
92 pci_direct_iommu_init();
93}
94
95/* No legacy IO on our parts */ 88/* No legacy IO on our parts */
96static int pas_check_legacy_ioport(unsigned int baseport) 89static int pas_check_legacy_ioport(unsigned int baseport)
97{ 90{
@@ -173,7 +166,6 @@ define_machine(pas) {
173 .name = "PA Semi PA6T-1682M", 166 .name = "PA Semi PA6T-1682M",
174 .probe = pas_probe, 167 .probe = pas_probe,
175 .setup_arch = pas_setup_arch, 168 .setup_arch = pas_setup_arch,
176 .init_early = pas_init_early,
177 .init_IRQ = pas_init_IRQ, 169 .init_IRQ = pas_init_IRQ,
178 .get_irq = mpic_get_irq, 170 .get_irq = mpic_get_irq,
179 .restart = pas_restart, 171 .restart = pas_restart,
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index 556c279a789d..3c95392f4f41 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -309,7 +309,7 @@ static void iommu_table_setparms_lpar(struct pci_controller *phb,
309 tbl->it_size = size >> IOMMU_PAGE_SHIFT; 309 tbl->it_size = size >> IOMMU_PAGE_SHIFT;
310} 310}
311 311
312static void iommu_bus_setup_pSeries(struct pci_bus *bus) 312static void pci_dma_bus_setup_pSeries(struct pci_bus *bus)
313{ 313{
314 struct device_node *dn; 314 struct device_node *dn;
315 struct iommu_table *tbl; 315 struct iommu_table *tbl;
@@ -318,10 +318,9 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus)
318 struct pci_dn *pci; 318 struct pci_dn *pci;
319 int children; 319 int children;
320 320
321 DBG("iommu_bus_setup_pSeries, bus %p, bus->self %p\n", bus, bus->self);
322
323 dn = pci_bus_to_OF_node(bus); 321 dn = pci_bus_to_OF_node(bus);
324 pci = PCI_DN(dn); 322
323 DBG("pci_dma_bus_setup_pSeries: setting up bus %s\n", dn->full_name);
325 324
326 if (bus->self) { 325 if (bus->self) {
327 /* This is not a root bus, any setup will be done for the 326 /* This is not a root bus, any setup will be done for the
@@ -329,6 +328,7 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus)
329 */ 328 */
330 return; 329 return;
331 } 330 }
331 pci = PCI_DN(dn);
332 332
333 /* Check if the ISA bus on the system is under 333 /* Check if the ISA bus on the system is under
334 * this PHB. 334 * this PHB.
@@ -390,17 +390,17 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus)
390} 390}
391 391
392 392
393static void iommu_bus_setup_pSeriesLP(struct pci_bus *bus) 393static void pci_dma_bus_setup_pSeriesLP(struct pci_bus *bus)
394{ 394{
395 struct iommu_table *tbl; 395 struct iommu_table *tbl;
396 struct device_node *dn, *pdn; 396 struct device_node *dn, *pdn;
397 struct pci_dn *ppci; 397 struct pci_dn *ppci;
398 const void *dma_window = NULL; 398 const void *dma_window = NULL;
399 399
400 DBG("iommu_bus_setup_pSeriesLP, bus %p, bus->self %p\n", bus, bus->self);
401
402 dn = pci_bus_to_OF_node(bus); 400 dn = pci_bus_to_OF_node(bus);
403 401
402 DBG("pci_dma_bus_setup_pSeriesLP: setting up bus %s\n", dn->full_name);
403
404 /* Find nearest ibm,dma-window, walking up the device tree */ 404 /* Find nearest ibm,dma-window, walking up the device tree */
405 for (pdn = dn; pdn != NULL; pdn = pdn->parent) { 405 for (pdn = dn; pdn != NULL; pdn = pdn->parent) {
406 dma_window = get_property(pdn, "ibm,dma-window", NULL); 406 dma_window = get_property(pdn, "ibm,dma-window", NULL);
@@ -409,11 +409,15 @@ static void iommu_bus_setup_pSeriesLP(struct pci_bus *bus)
409 } 409 }
410 410
411 if (dma_window == NULL) { 411 if (dma_window == NULL) {
412 DBG("iommu_bus_setup_pSeriesLP: bus %s seems to have no ibm,dma-window property\n", dn->full_name); 412 DBG(" no ibm,dma-window property !\n");
413 return; 413 return;
414 } 414 }
415 415
416 ppci = PCI_DN(pdn); 416 ppci = PCI_DN(pdn);
417
418 DBG(" parent is %s, iommu_table: 0x%p\n",
419 pdn->full_name, ppci->iommu_table);
420
417 if (!ppci->iommu_table) { 421 if (!ppci->iommu_table) {
418 /* Bussubno hasn't been copied yet. 422 /* Bussubno hasn't been copied yet.
419 * Do it now because iommu_table_setparms_lpar needs it. 423 * Do it now because iommu_table_setparms_lpar needs it.
@@ -427,6 +431,7 @@ static void iommu_bus_setup_pSeriesLP(struct pci_bus *bus)
427 iommu_table_setparms_lpar(ppci->phb, pdn, tbl, dma_window); 431 iommu_table_setparms_lpar(ppci->phb, pdn, tbl, dma_window);
428 432
429 ppci->iommu_table = iommu_init_table(tbl, ppci->phb->node); 433 ppci->iommu_table = iommu_init_table(tbl, ppci->phb->node);
434 DBG(" created table: %p\n", ppci->iommu_table);
430 } 435 }
431 436
432 if (pdn != dn) 437 if (pdn != dn)
@@ -434,27 +439,27 @@ static void iommu_bus_setup_pSeriesLP(struct pci_bus *bus)
434} 439}
435 440
436 441
437static void iommu_dev_setup_pSeries(struct pci_dev *dev) 442static void pci_dma_dev_setup_pSeries(struct pci_dev *dev)
438{ 443{
439 struct device_node *dn, *mydn; 444 struct device_node *dn;
440 struct iommu_table *tbl; 445 struct iommu_table *tbl;
441 446
442 DBG("iommu_dev_setup_pSeries, dev %p (%s)\n", dev, pci_name(dev)); 447 DBG("pci_dma_dev_setup_pSeries: %s\n", pci_name(dev));
443 448
444 mydn = dn = pci_device_to_OF_node(dev); 449 dn = dev->dev.archdata.of_node;
445 450
446 /* If we're the direct child of a root bus, then we need to allocate 451 /* If we're the direct child of a root bus, then we need to allocate
447 * an iommu table ourselves. The bus setup code should have setup 452 * an iommu table ourselves. The bus setup code should have setup
448 * the window sizes already. 453 * the window sizes already.
449 */ 454 */
450 if (!dev->bus->self) { 455 if (!dev->bus->self) {
456 struct pci_controller *phb = PCI_DN(dn)->phb;
457
451 DBG(" --> first child, no bridge. Allocating iommu table.\n"); 458 DBG(" --> first child, no bridge. Allocating iommu table.\n");
452 tbl = kmalloc_node(sizeof(struct iommu_table), GFP_KERNEL, 459 tbl = kmalloc_node(sizeof(struct iommu_table), GFP_KERNEL,
453 PCI_DN(dn)->phb->node); 460 phb->node);
454 iommu_table_setparms(PCI_DN(dn)->phb, dn, tbl); 461 iommu_table_setparms(phb, dn, tbl);
455 PCI_DN(dn)->iommu_table = iommu_init_table(tbl, 462 dev->dev.archdata.dma_data = iommu_init_table(tbl, phb->node);
456 PCI_DN(dn)->phb->node);
457
458 return; 463 return;
459 } 464 }
460 465
@@ -465,11 +470,11 @@ static void iommu_dev_setup_pSeries(struct pci_dev *dev)
465 while (dn && PCI_DN(dn) && PCI_DN(dn)->iommu_table == NULL) 470 while (dn && PCI_DN(dn) && PCI_DN(dn)->iommu_table == NULL)
466 dn = dn->parent; 471 dn = dn->parent;
467 472
468 if (dn && PCI_DN(dn)) { 473 if (dn && PCI_DN(dn))
469 PCI_DN(mydn)->iommu_table = PCI_DN(dn)->iommu_table; 474 dev->dev.archdata.dma_data = PCI_DN(dn)->iommu_table;
470 } else { 475 else
471 DBG("iommu_dev_setup_pSeries, dev %p (%s) has no iommu table\n", dev, pci_name(dev)); 476 printk(KERN_WARNING "iommu: Device %s has no iommu table\n",
472 } 477 pci_name(dev));
473} 478}
474 479
475static int iommu_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *node) 480static int iommu_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *node)
@@ -495,13 +500,15 @@ static struct notifier_block iommu_reconfig_nb = {
495 .notifier_call = iommu_reconfig_notifier, 500 .notifier_call = iommu_reconfig_notifier,
496}; 501};
497 502
498static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev) 503static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev)
499{ 504{
500 struct device_node *pdn, *dn; 505 struct device_node *pdn, *dn;
501 struct iommu_table *tbl; 506 struct iommu_table *tbl;
502 const void *dma_window = NULL; 507 const void *dma_window = NULL;
503 struct pci_dn *pci; 508 struct pci_dn *pci;
504 509
510 DBG("pci_dma_dev_setup_pSeriesLP: %s\n", pci_name(dev));
511
505 /* dev setup for LPAR is a little tricky, since the device tree might 512 /* dev setup for LPAR is a little tricky, since the device tree might
506 * contain the dma-window properties per-device and not neccesarily 513 * contain the dma-window properties per-device and not neccesarily
507 * for the bus. So we need to search upwards in the tree until we 514 * for the bus. So we need to search upwards in the tree until we
@@ -509,9 +516,7 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
509 * already allocated. 516 * already allocated.
510 */ 517 */
511 dn = pci_device_to_OF_node(dev); 518 dn = pci_device_to_OF_node(dev);
512 519 DBG(" node is %s\n", dn->full_name);
513 DBG("iommu_dev_setup_pSeriesLP, dev %p (%s) %s\n",
514 dev, pci_name(dev), dn->full_name);
515 520
516 for (pdn = dn; pdn && PCI_DN(pdn) && !PCI_DN(pdn)->iommu_table; 521 for (pdn = dn; pdn && PCI_DN(pdn) && !PCI_DN(pdn)->iommu_table;
517 pdn = pdn->parent) { 522 pdn = pdn->parent) {
@@ -520,16 +525,17 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
520 break; 525 break;
521 } 526 }
522 527
528 DBG(" parent is %s\n", pdn->full_name);
529
523 /* Check for parent == NULL so we don't try to setup the empty EADS 530 /* Check for parent == NULL so we don't try to setup the empty EADS
524 * slots on POWER4 machines. 531 * slots on POWER4 machines.
525 */ 532 */
526 if (dma_window == NULL || pdn->parent == NULL) { 533 if (dma_window == NULL || pdn->parent == NULL) {
527 DBG("No dma window for device, linking to parent\n"); 534 DBG(" no dma window for device, linking to parent\n");
528 PCI_DN(dn)->iommu_table = PCI_DN(pdn)->iommu_table; 535 dev->dev.archdata.dma_data = PCI_DN(pdn)->iommu_table;
529 return; 536 return;
530 } else {
531 DBG("Found DMA window, allocating table\n");
532 } 537 }
538 DBG(" found DMA window, table: %p\n", pci->iommu_table);
533 539
534 pci = PCI_DN(pdn); 540 pci = PCI_DN(pdn);
535 if (!pci->iommu_table) { 541 if (!pci->iommu_table) {
@@ -542,24 +548,20 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
542 iommu_table_setparms_lpar(pci->phb, pdn, tbl, dma_window); 548 iommu_table_setparms_lpar(pci->phb, pdn, tbl, dma_window);
543 549
544 pci->iommu_table = iommu_init_table(tbl, pci->phb->node); 550 pci->iommu_table = iommu_init_table(tbl, pci->phb->node);
551 DBG(" created table: %p\n", pci->iommu_table);
545 } 552 }
546 553
547 if (pdn != dn) 554 dev->dev.archdata.dma_data = pci->iommu_table;
548 PCI_DN(dn)->iommu_table = pci->iommu_table;
549} 555}
550 556
551static void iommu_bus_setup_null(struct pci_bus *b) { }
552static void iommu_dev_setup_null(struct pci_dev *d) { }
553
554/* These are called very early. */ 557/* These are called very early. */
555void iommu_init_early_pSeries(void) 558void iommu_init_early_pSeries(void)
556{ 559{
557 if (of_chosen && get_property(of_chosen, "linux,iommu-off", NULL)) { 560 if (of_chosen && get_property(of_chosen, "linux,iommu-off", NULL)) {
558 /* Direct I/O, IOMMU off */ 561 /* Direct I/O, IOMMU off */
559 ppc_md.iommu_dev_setup = iommu_dev_setup_null; 562 ppc_md.pci_dma_dev_setup = NULL;
560 ppc_md.iommu_bus_setup = iommu_bus_setup_null; 563 ppc_md.pci_dma_bus_setup = NULL;
561 pci_direct_iommu_init(); 564 pci_dma_ops = &dma_direct_ops;
562
563 return; 565 return;
564 } 566 }
565 567
@@ -572,19 +574,19 @@ void iommu_init_early_pSeries(void)
572 ppc_md.tce_free = tce_free_pSeriesLP; 574 ppc_md.tce_free = tce_free_pSeriesLP;
573 } 575 }
574 ppc_md.tce_get = tce_get_pSeriesLP; 576 ppc_md.tce_get = tce_get_pSeriesLP;
575 ppc_md.iommu_bus_setup = iommu_bus_setup_pSeriesLP; 577 ppc_md.pci_dma_bus_setup = pci_dma_bus_setup_pSeriesLP;
576 ppc_md.iommu_dev_setup = iommu_dev_setup_pSeriesLP; 578 ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_pSeriesLP;
577 } else { 579 } else {
578 ppc_md.tce_build = tce_build_pSeries; 580 ppc_md.tce_build = tce_build_pSeries;
579 ppc_md.tce_free = tce_free_pSeries; 581 ppc_md.tce_free = tce_free_pSeries;
580 ppc_md.tce_get = tce_get_pseries; 582 ppc_md.tce_get = tce_get_pseries;
581 ppc_md.iommu_bus_setup = iommu_bus_setup_pSeries; 583 ppc_md.pci_dma_bus_setup = pci_dma_bus_setup_pSeries;
582 ppc_md.iommu_dev_setup = iommu_dev_setup_pSeries; 584 ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_pSeries;
583 } 585 }
584 586
585 587
586 pSeries_reconfig_notifier_register(&iommu_reconfig_nb); 588 pSeries_reconfig_notifier_register(&iommu_reconfig_nb);
587 589
588 pci_iommu_init(); 590 pci_dma_ops = &dma_iommu_ops;
589} 591}
590 592
diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c
index 6bfacc217085..bb0cb5c5b565 100644
--- a/arch/powerpc/platforms/pseries/pci_dlpar.c
+++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
@@ -93,8 +93,8 @@ pcibios_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus)
93 if (list_empty(&dev->global_list)) { 93 if (list_empty(&dev->global_list)) {
94 int i; 94 int i;
95 95
96 /* Need to setup IOMMU tables */ 96 /* Fill device archdata and setup iommu table */
97 ppc_md.iommu_dev_setup(dev); 97 pcibios_setup_new_device(dev);
98 98
99 if(fix_bus) 99 if(fix_bus)
100 pcibios_fixup_device_resources(dev, bus); 100 pcibios_fixup_device_resources(dev, bus);
diff --git a/arch/powerpc/sysdev/dart_iommu.c b/arch/powerpc/sysdev/dart_iommu.c
index 572b7846cc77..ac784bb57289 100644
--- a/arch/powerpc/sysdev/dart_iommu.c
+++ b/arch/powerpc/sysdev/dart_iommu.c
@@ -289,24 +289,15 @@ static void iommu_table_dart_setup(void)
289 set_bit(iommu_table_dart.it_size - 1, iommu_table_dart.it_map); 289 set_bit(iommu_table_dart.it_size - 1, iommu_table_dart.it_map);
290} 290}
291 291
292static void iommu_dev_setup_dart(struct pci_dev *dev) 292static void pci_dma_dev_setup_dart(struct pci_dev *dev)
293{ 293{
294 struct device_node *dn;
295
296 /* We only have one iommu table on the mac for now, which makes 294 /* We only have one iommu table on the mac for now, which makes
297 * things simple. Setup all PCI devices to point to this table 295 * things simple. Setup all PCI devices to point to this table
298 *
299 * We must use pci_device_to_OF_node() to make sure that
300 * we get the real "final" pointer to the device in the
301 * pci_dev sysdata and not the temporary PHB one
302 */ 296 */
303 dn = pci_device_to_OF_node(dev); 297 dev->dev.archdata.dma_data = &iommu_table_dart;
304
305 if (dn)
306 PCI_DN(dn)->iommu_table = &iommu_table_dart;
307} 298}
308 299
309static void iommu_bus_setup_dart(struct pci_bus *bus) 300static void pci_dma_bus_setup_dart(struct pci_bus *bus)
310{ 301{
311 struct device_node *dn; 302 struct device_node *dn;
312 303
@@ -321,9 +312,6 @@ static void iommu_bus_setup_dart(struct pci_bus *bus)
321 PCI_DN(dn)->iommu_table = &iommu_table_dart; 312 PCI_DN(dn)->iommu_table = &iommu_table_dart;
322} 313}
323 314
324static void iommu_dev_setup_null(struct pci_dev *dev) { }
325static void iommu_bus_setup_null(struct pci_bus *bus) { }
326
327void iommu_init_early_dart(void) 315void iommu_init_early_dart(void)
328{ 316{
329 struct device_node *dn; 317 struct device_node *dn;
@@ -344,22 +332,21 @@ void iommu_init_early_dart(void)
344 332
345 /* Initialize the DART HW */ 333 /* Initialize the DART HW */
346 if (dart_init(dn) == 0) { 334 if (dart_init(dn) == 0) {
347 ppc_md.iommu_dev_setup = iommu_dev_setup_dart; 335 ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_dart;
348 ppc_md.iommu_bus_setup = iommu_bus_setup_dart; 336 ppc_md.pci_dma_bus_setup = pci_dma_bus_setup_dart;
349 337
350 /* Setup pci_dma ops */ 338 /* Setup pci_dma ops */
351 pci_iommu_init(); 339 pci_dma_ops = &dma_iommu_ops;
352
353 return; 340 return;
354 } 341 }
355 342
356 bail: 343 bail:
357 /* If init failed, use direct iommu and null setup functions */ 344 /* If init failed, use direct iommu and null setup functions */
358 ppc_md.iommu_dev_setup = iommu_dev_setup_null; 345 ppc_md.pci_dma_dev_setup = NULL;
359 ppc_md.iommu_bus_setup = iommu_bus_setup_null; 346 ppc_md.pci_dma_bus_setup = NULL;
360 347
361 /* Setup pci_dma ops */ 348 /* Setup pci_dma ops */
362 pci_direct_iommu_init(); 349 pci_dma_ops = &dma_direct_ops;
363} 350}
364 351
365 352
diff --git a/include/asm-powerpc/device.h b/include/asm-powerpc/device.h
index d8f9872b0e2d..228ab2a315b9 100644
--- a/include/asm-powerpc/device.h
+++ b/include/asm-powerpc/device.h
@@ -3,5 +3,22 @@
3 * 3 *
4 * This file is released under the GPLv2 4 * This file is released under the GPLv2
5 */ 5 */
6#include <asm-generic/device.h> 6#ifndef _ASM_POWERPC_DEVICE_H
7#define _ASM_POWERPC_DEVICE_H
7 8
9struct dma_mapping_ops;
10struct device_node;
11
12struct dev_archdata {
13 /* Optional pointer to an OF device node */
14 struct device_node *of_node;
15
16 /* DMA operations on that device */
17 struct dma_mapping_ops *dma_ops;
18 void *dma_data;
19
20 /* NUMA node if applicable */
21 int numa_node;
22};
23
24#endif /* _ASM_POWERPC_DEVICE_H */
diff --git a/include/asm-powerpc/dma-mapping.h b/include/asm-powerpc/dma-mapping.h
index 2ab9baf78bb4..8367810c994c 100644
--- a/include/asm-powerpc/dma-mapping.h
+++ b/include/asm-powerpc/dma-mapping.h
@@ -44,26 +44,148 @@ extern void __dma_sync_page(struct page *page, unsigned long offset,
44#endif /* ! CONFIG_NOT_COHERENT_CACHE */ 44#endif /* ! CONFIG_NOT_COHERENT_CACHE */
45 45
46#ifdef CONFIG_PPC64 46#ifdef CONFIG_PPC64
47/*
48 * DMA operations are abstracted for G5 vs. i/pSeries, PCI vs. VIO
49 */
50struct dma_mapping_ops {
51 void * (*alloc_coherent)(struct device *dev, size_t size,
52 dma_addr_t *dma_handle, gfp_t flag);
53 void (*free_coherent)(struct device *dev, size_t size,
54 void *vaddr, dma_addr_t dma_handle);
55 dma_addr_t (*map_single)(struct device *dev, void *ptr,
56 size_t size, enum dma_data_direction direction);
57 void (*unmap_single)(struct device *dev, dma_addr_t dma_addr,
58 size_t size, enum dma_data_direction direction);
59 int (*map_sg)(struct device *dev, struct scatterlist *sg,
60 int nents, enum dma_data_direction direction);
61 void (*unmap_sg)(struct device *dev, struct scatterlist *sg,
62 int nents, enum dma_data_direction direction);
63 int (*dma_supported)(struct device *dev, u64 mask);
64 int (*dac_dma_supported)(struct device *dev, u64 mask);
65 int (*set_dma_mask)(struct device *dev, u64 dma_mask);
66};
67
68static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
69{
70 /* We don't handle the NULL dev case for ISA for now. We could
71 * do it via an out of line call but it is not needed for now. The
72 * only ISA DMA device we support is the floppy and we have a hack
73 * in the floppy driver directly to get a device for us.
74 */
75 if (unlikely(dev == NULL || dev->archdata.dma_ops == NULL))
76 return NULL;
77 return dev->archdata.dma_ops;
78}
79
80static inline int dma_supported(struct device *dev, u64 mask)
81{
82 struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
83
84 if (unlikely(dma_ops == NULL))
85 return 0;
86 if (dma_ops->dma_supported == NULL)
87 return 1;
88 return dma_ops->dma_supported(dev, mask);
89}
90
91static inline int dma_set_mask(struct device *dev, u64 dma_mask)
92{
93 struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
94
95 if (unlikely(dma_ops == NULL))
96 return -EIO;
97 if (dma_ops->set_dma_mask != NULL)
98 return dma_ops->set_dma_mask(dev, dma_mask);
99 if (!dev->dma_mask || !dma_supported(dev, *dev->dma_mask))
100 return -EIO;
101 *dev->dma_mask = dma_mask;
102 return 0;
103}
104
105static inline void *dma_alloc_coherent(struct device *dev, size_t size,
106 dma_addr_t *dma_handle, gfp_t flag)
107{
108 struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
109
110 BUG_ON(!dma_ops);
111 return dma_ops->alloc_coherent(dev, size, dma_handle, flag);
112}
113
114static inline void dma_free_coherent(struct device *dev, size_t size,
115 void *cpu_addr, dma_addr_t dma_handle)
116{
117 struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
118
119 BUG_ON(!dma_ops);
120 dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
121}
122
123static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
124 size_t size,
125 enum dma_data_direction direction)
126{
127 struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
128
129 BUG_ON(!dma_ops);
130 return dma_ops->map_single(dev, cpu_addr, size, direction);
131}
132
133static inline void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
134 size_t size,
135 enum dma_data_direction direction)
136{
137 struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
138
139 BUG_ON(!dma_ops);
140 dma_ops->unmap_single(dev, dma_addr, size, direction);
141}
142
143static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
144 unsigned long offset, size_t size,
145 enum dma_data_direction direction)
146{
147 struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
148
149 BUG_ON(!dma_ops);
150 return dma_ops->map_single(dev, page_address(page) + offset, size,
151 direction);
152}
153
154static inline void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
155 size_t size,
156 enum dma_data_direction direction)
157{
158 struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
159
160 BUG_ON(!dma_ops);
161 dma_ops->unmap_single(dev, dma_address, size, direction);
162}
163
164static inline int dma_map_sg(struct device *dev, struct scatterlist *sg,
165 int nents, enum dma_data_direction direction)
166{
167 struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
168
169 BUG_ON(!dma_ops);
170 return dma_ops->map_sg(dev, sg, nents, direction);
171}
172
173static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
174 int nhwentries,
175 enum dma_data_direction direction)
176{
177 struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
178
179 BUG_ON(!dma_ops);
180 dma_ops->unmap_sg(dev, sg, nhwentries, direction);
181}
47 182
48extern int dma_supported(struct device *dev, u64 mask); 183
49extern int dma_set_mask(struct device *dev, u64 dma_mask); 184/*
50extern void *dma_alloc_coherent(struct device *dev, size_t size, 185 * Available generic sets of operations
51 dma_addr_t *dma_handle, gfp_t flag); 186 */
52extern void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, 187extern struct dma_mapping_ops dma_iommu_ops;
53 dma_addr_t dma_handle); 188extern struct dma_mapping_ops dma_direct_ops;
54extern dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
55 size_t size, enum dma_data_direction direction);
56extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
57 size_t size, enum dma_data_direction direction);
58extern dma_addr_t dma_map_page(struct device *dev, struct page *page,
59 unsigned long offset, size_t size,
60 enum dma_data_direction direction);
61extern void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
62 size_t size, enum dma_data_direction direction);
63extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
64 enum dma_data_direction direction);
65extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
66 int nhwentries, enum dma_data_direction direction);
67 189
68#else /* CONFIG_PPC64 */ 190#else /* CONFIG_PPC64 */
69 191
@@ -261,25 +383,5 @@ static inline void dma_cache_sync(void *vaddr, size_t size,
261 __dma_sync(vaddr, size, (int)direction); 383 __dma_sync(vaddr, size, (int)direction);
262} 384}
263 385
264/*
265 * DMA operations are abstracted for G5 vs. i/pSeries, PCI vs. VIO
266 */
267struct dma_mapping_ops {
268 void * (*alloc_coherent)(struct device *dev, size_t size,
269 dma_addr_t *dma_handle, gfp_t flag);
270 void (*free_coherent)(struct device *dev, size_t size,
271 void *vaddr, dma_addr_t dma_handle);
272 dma_addr_t (*map_single)(struct device *dev, void *ptr,
273 size_t size, enum dma_data_direction direction);
274 void (*unmap_single)(struct device *dev, dma_addr_t dma_addr,
275 size_t size, enum dma_data_direction direction);
276 int (*map_sg)(struct device *dev, struct scatterlist *sg,
277 int nents, enum dma_data_direction direction);
278 void (*unmap_sg)(struct device *dev, struct scatterlist *sg,
279 int nents, enum dma_data_direction direction);
280 int (*dma_supported)(struct device *dev, u64 mask);
281 int (*dac_dma_supported)(struct device *dev, u64 mask);
282};
283
284#endif /* __KERNEL__ */ 386#endif /* __KERNEL__ */
285#endif /* _ASM_DMA_MAPPING_H */ 387#endif /* _ASM_DMA_MAPPING_H */
diff --git a/include/asm-powerpc/ibmebus.h b/include/asm-powerpc/ibmebus.h
index 3493429b70f5..66112114b8c5 100644
--- a/include/asm-powerpc/ibmebus.h
+++ b/include/asm-powerpc/ibmebus.h
@@ -44,7 +44,6 @@
44#include <linux/mod_devicetable.h> 44#include <linux/mod_devicetable.h>
45#include <asm/of_device.h> 45#include <asm/of_device.h>
46 46
47extern struct dma_mapping_ops ibmebus_dma_ops;
48extern struct bus_type ibmebus_bus_type; 47extern struct bus_type ibmebus_bus_type;
49 48
50struct ibmebus_dev { 49struct ibmebus_dev {
diff --git a/include/asm-powerpc/iommu.h b/include/asm-powerpc/iommu.h
index 19e6f7e0a607..19403183dbbc 100644
--- a/include/asm-powerpc/iommu.h
+++ b/include/asm-powerpc/iommu.h
@@ -79,22 +79,22 @@ extern void iommu_free_table(struct device_node *dn);
79extern struct iommu_table *iommu_init_table(struct iommu_table * tbl, 79extern struct iommu_table *iommu_init_table(struct iommu_table * tbl,
80 int nid); 80 int nid);
81 81
82extern int iommu_map_sg(struct device *dev, struct iommu_table *tbl, 82extern int iommu_map_sg(struct iommu_table *tbl, struct scatterlist *sglist,
83 struct scatterlist *sglist, int nelems, unsigned long mask, 83 int nelems, unsigned long mask,
84 enum dma_data_direction direction); 84 enum dma_data_direction direction);
85extern void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist, 85extern void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist,
86 int nelems, enum dma_data_direction direction); 86 int nelems, enum dma_data_direction direction);
87 87
88extern void *iommu_alloc_coherent(struct iommu_table *tbl, size_t size, 88extern void *iommu_alloc_coherent(struct iommu_table *tbl, size_t size,
89 dma_addr_t *dma_handle, unsigned long mask, 89 dma_addr_t *dma_handle, unsigned long mask,
90 gfp_t flag, int node); 90 gfp_t flag, int node);
91extern void iommu_free_coherent(struct iommu_table *tbl, size_t size, 91extern void iommu_free_coherent(struct iommu_table *tbl, size_t size,
92 void *vaddr, dma_addr_t dma_handle); 92 void *vaddr, dma_addr_t dma_handle);
93extern dma_addr_t iommu_map_single(struct iommu_table *tbl, void *vaddr, 93extern dma_addr_t iommu_map_single(struct iommu_table *tbl, void *vaddr,
94 size_t size, unsigned long mask, 94 size_t size, unsigned long mask,
95 enum dma_data_direction direction); 95 enum dma_data_direction direction);
96extern void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle, 96extern void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle,
97 size_t size, enum dma_data_direction direction); 97 size_t size, enum dma_data_direction direction);
98 98
99extern void iommu_init_early_pSeries(void); 99extern void iommu_init_early_pSeries(void);
100extern void iommu_init_early_iSeries(void); 100extern void iommu_init_early_iSeries(void);
diff --git a/include/asm-powerpc/iseries/iommu.h b/include/asm-powerpc/iseries/iommu.h
index 0edbfe10cb37..6e323a13ac30 100644
--- a/include/asm-powerpc/iseries/iommu.h
+++ b/include/asm-powerpc/iseries/iommu.h
@@ -21,11 +21,13 @@
21 * Boston, MA 02111-1307 USA 21 * Boston, MA 02111-1307 USA
22 */ 22 */
23 23
24struct pci_dev;
24struct device_node; 25struct device_node;
25struct iommu_table; 26struct iommu_table;
26 27
27/* Creates table for an individual device node */ 28/* Creates table for an individual device node */
28extern void iommu_devnode_init_iSeries(struct device_node *dn); 29extern void iommu_devnode_init_iSeries(struct pci_dev *pdev,
30 struct device_node *dn);
29 31
30/* Get table parameters from HV */ 32/* Get table parameters from HV */
31extern void iommu_table_getparms_iSeries(unsigned long busno, 33extern void iommu_table_getparms_iSeries(unsigned long busno,
diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h
index 162205f62641..ccc29744656e 100644
--- a/include/asm-powerpc/machdep.h
+++ b/include/asm-powerpc/machdep.h
@@ -84,8 +84,8 @@ struct machdep_calls {
84 unsigned long (*tce_get)(struct iommu_table *tbl, 84 unsigned long (*tce_get)(struct iommu_table *tbl,
85 long index); 85 long index);
86 void (*tce_flush)(struct iommu_table *tbl); 86 void (*tce_flush)(struct iommu_table *tbl);
87 void (*iommu_dev_setup)(struct pci_dev *dev); 87 void (*pci_dma_dev_setup)(struct pci_dev *dev);
88 void (*iommu_bus_setup)(struct pci_bus *bus); 88 void (*pci_dma_bus_setup)(struct pci_bus *bus);
89#endif /* CONFIG_PPC64 */ 89#endif /* CONFIG_PPC64 */
90 90
91 int (*probe)(void); 91 int (*probe)(void);
diff --git a/include/asm-powerpc/of_device.h b/include/asm-powerpc/of_device.h
index 1ef7e9edd1a7..a889b2005bf5 100644
--- a/include/asm-powerpc/of_device.h
+++ b/include/asm-powerpc/of_device.h
@@ -14,7 +14,7 @@
14 */ 14 */
15struct of_device 15struct of_device
16{ 16{
17 struct device_node *node; /* OF device node */ 17 struct device_node *node; /* to be obsoleted */
18 u64 dma_mask; /* DMA mask */ 18 u64 dma_mask; /* DMA mask */
19 struct device dev; /* Generic device interface */ 19 struct device dev; /* Generic device interface */
20}; 20};
diff --git a/include/asm-powerpc/pci.h b/include/asm-powerpc/pci.h
index c77286051496..16f13319c769 100644
--- a/include/asm-powerpc/pci.h
+++ b/include/asm-powerpc/pci.h
@@ -70,15 +70,15 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
70 */ 70 */
71#define PCI_DISABLE_MWI 71#define PCI_DISABLE_MWI
72 72
73extern struct dma_mapping_ops pci_dma_ops; 73extern struct dma_mapping_ops *pci_dma_ops;
74 74
75/* For DAC DMA, we currently don't support it by default, but 75/* For DAC DMA, we currently don't support it by default, but
76 * we let 64-bit platforms override this. 76 * we let 64-bit platforms override this.
77 */ 77 */
78static inline int pci_dac_dma_supported(struct pci_dev *hwdev,u64 mask) 78static inline int pci_dac_dma_supported(struct pci_dev *hwdev,u64 mask)
79{ 79{
80 if (pci_dma_ops.dac_dma_supported) 80 if (pci_dma_ops && pci_dma_ops->dac_dma_supported)
81 return pci_dma_ops.dac_dma_supported(&hwdev->dev, mask); 81 return pci_dma_ops->dac_dma_supported(&hwdev->dev, mask);
82 return 0; 82 return 0;
83} 83}
84 84
@@ -210,6 +210,8 @@ extern int remap_bus_range(struct pci_bus *bus);
210extern void pcibios_fixup_device_resources(struct pci_dev *dev, 210extern void pcibios_fixup_device_resources(struct pci_dev *dev,
211 struct pci_bus *bus); 211 struct pci_bus *bus);
212 212
213extern void pcibios_setup_new_device(struct pci_dev *dev);
214
213extern void pcibios_claim_one_bus(struct pci_bus *b); 215extern void pcibios_claim_one_bus(struct pci_bus *b);
214 216
215extern struct pci_controller *init_phb_dynamic(struct device_node *dn); 217extern struct pci_controller *init_phb_dynamic(struct device_node *dn);
diff --git a/include/asm-powerpc/vio.h b/include/asm-powerpc/vio.h
index 4b51d42e1419..0117b544ecbc 100644
--- a/include/asm-powerpc/vio.h
+++ b/include/asm-powerpc/vio.h
@@ -45,7 +45,6 @@ struct iommu_table;
45 * The vio_dev structure is used to describe virtual I/O devices. 45 * The vio_dev structure is used to describe virtual I/O devices.
46 */ 46 */
47struct vio_dev { 47struct vio_dev {
48 struct iommu_table *iommu_table; /* vio_map_* uses this */
49 const char *name; 48 const char *name;
50 const char *type; 49 const char *type;
51 uint32_t unit_address; 50 uint32_t unit_address;
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-22 11:27:39 -0400