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authorGeoff Levand <geoffrey.levand@am.sony.com>2007-01-30 18:20:27 -0500
committerPaul Mackerras <paulus@samba.org>2007-02-06 22:03:19 -0500
commit2a08ea69a3e448a5cc94e5da9eccc40cf13f9532 (patch)
tree76fe2d0788c533b1d5fc1a89a34606d84b79961a /arch/powerpc/platforms
parent63c2f782e8f6aafbc11b14b2cb291b3dc9fc217d (diff)
[POWERPC] PS3: Move system bus to platform directory
Move the PS3 system bus routines from drivers/ps3 to arch/powerpc/platforms/ps3. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/ps3/Makefile1
-rw-r--r--arch/powerpc/platforms/ps3/htab.c1
-rw-r--r--arch/powerpc/platforms/ps3/interrupt.c1
-rw-r--r--arch/powerpc/platforms/ps3/mm.c1
-rw-r--r--arch/powerpc/platforms/ps3/os-area.c1
-rw-r--r--arch/powerpc/platforms/ps3/platform.h151
-rw-r--r--arch/powerpc/platforms/ps3/repository.c3
-rw-r--r--arch/powerpc/platforms/ps3/setup.c1
-rw-r--r--arch/powerpc/platforms/ps3/smp.c1
-rw-r--r--arch/powerpc/platforms/ps3/spu.c3
-rw-r--r--arch/powerpc/platforms/ps3/system-bus.c363
11 files changed, 519 insertions, 8 deletions
diff --git a/arch/powerpc/platforms/ps3/Makefile b/arch/powerpc/platforms/ps3/Makefile
index 1994904f580f..a0048fcf0866 100644
--- a/arch/powerpc/platforms/ps3/Makefile
+++ b/arch/powerpc/platforms/ps3/Makefile
@@ -1,5 +1,6 @@
1obj-y += setup.o mm.o time.o hvcall.o htab.o repository.o 1obj-y += setup.o mm.o time.o hvcall.o htab.o repository.o
2obj-y += interrupt.o exports.o os-area.o 2obj-y += interrupt.o exports.o os-area.o
3obj-y += system-bus.o
3 4
4obj-$(CONFIG_SMP) += smp.o 5obj-$(CONFIG_SMP) += smp.o
5obj-$(CONFIG_SPU_BASE) += spu.o 6obj-$(CONFIG_SPU_BASE) += spu.o
diff --git a/arch/powerpc/platforms/ps3/htab.c b/arch/powerpc/platforms/ps3/htab.c
index 8fe1769655a3..a4b5a1bc60f4 100644
--- a/arch/powerpc/platforms/ps3/htab.c
+++ b/arch/powerpc/platforms/ps3/htab.c
@@ -23,7 +23,6 @@
23#include <asm/machdep.h> 23#include <asm/machdep.h>
24#include <asm/lmb.h> 24#include <asm/lmb.h>
25#include <asm/udbg.h> 25#include <asm/udbg.h>
26#include <asm/ps3.h>
27#include <asm/lv1call.h> 26#include <asm/lv1call.h>
28 27
29#include "platform.h" 28#include "platform.h"
diff --git a/arch/powerpc/platforms/ps3/interrupt.c b/arch/powerpc/platforms/ps3/interrupt.c
index 95b128ba9087..bb17283275aa 100644
--- a/arch/powerpc/platforms/ps3/interrupt.c
+++ b/arch/powerpc/platforms/ps3/interrupt.c
@@ -24,7 +24,6 @@
24 24
25#include <asm/machdep.h> 25#include <asm/machdep.h>
26#include <asm/udbg.h> 26#include <asm/udbg.h>
27#include <asm/ps3.h>
28#include <asm/lv1call.h> 27#include <asm/lv1call.h>
29 28
30#include "platform.h" 29#include "platform.h"
diff --git a/arch/powerpc/platforms/ps3/mm.c b/arch/powerpc/platforms/ps3/mm.c
index 49c0d010d491..42354de3f557 100644
--- a/arch/powerpc/platforms/ps3/mm.c
+++ b/arch/powerpc/platforms/ps3/mm.c
@@ -25,7 +25,6 @@
25#include <asm/firmware.h> 25#include <asm/firmware.h>
26#include <asm/lmb.h> 26#include <asm/lmb.h>
27#include <asm/udbg.h> 27#include <asm/udbg.h>
28#include <asm/ps3.h>
29#include <asm/lv1call.h> 28#include <asm/lv1call.h>
30 29
31#include "platform.h" 30#include "platform.h"
diff --git a/arch/powerpc/platforms/ps3/os-area.c b/arch/powerpc/platforms/ps3/os-area.c
index 6d0d2ac39bd8..5c3da08bc0c4 100644
--- a/arch/powerpc/platforms/ps3/os-area.c
+++ b/arch/powerpc/platforms/ps3/os-area.c
@@ -22,7 +22,6 @@
22#include <linux/io.h> 22#include <linux/io.h>
23 23
24#include <asm/lmb.h> 24#include <asm/lmb.h>
25#include <asm/ps3.h>
26 25
27#include "platform.h" 26#include "platform.h"
28 27
diff --git a/arch/powerpc/platforms/ps3/platform.h b/arch/powerpc/platforms/ps3/platform.h
index 23b111bea9d0..ca04f03305c7 100644
--- a/arch/powerpc/platforms/ps3/platform.h
+++ b/arch/powerpc/platforms/ps3/platform.h
@@ -22,6 +22,9 @@
22#define _PS3_PLATFORM_H 22#define _PS3_PLATFORM_H
23 23
24#include <linux/rtc.h> 24#include <linux/rtc.h>
25#include <scsi/scsi.h>
26
27#include <asm/ps3.h>
25 28
26/* htab */ 29/* htab */
27 30
@@ -65,4 +68,152 @@ void ps3_spu_set_platform (void);
65static inline void ps3_spu_set_platform (void) {} 68static inline void ps3_spu_set_platform (void) {}
66#endif 69#endif
67 70
71/* repository bus info */
72
73enum ps3_bus_type {
74 PS3_BUS_TYPE_SB = 4,
75 PS3_BUS_TYPE_STORAGE = 5,
76};
77
78enum ps3_dev_type {
79 PS3_DEV_TYPE_STOR_DISK = TYPE_DISK, /* 0 */
80 PS3_DEV_TYPE_SB_GELIC = 3,
81 PS3_DEV_TYPE_SB_USB = 4,
82 PS3_DEV_TYPE_STOR_ROM = TYPE_ROM, /* 5 */
83 PS3_DEV_TYPE_SB_GPIO = 6,
84 PS3_DEV_TYPE_STOR_FLASH = TYPE_RBC, /* 14 */
85};
86
87int ps3_repository_read_bus_str(unsigned int bus_index, const char *bus_str,
88 u64 *value);
89int ps3_repository_read_bus_id(unsigned int bus_index, unsigned int *bus_id);
90int ps3_repository_read_bus_type(unsigned int bus_index,
91 enum ps3_bus_type *bus_type);
92int ps3_repository_read_bus_num_dev(unsigned int bus_index,
93 unsigned int *num_dev);
94
95/* repository bus device info */
96
97enum ps3_interrupt_type {
98 PS3_INTERRUPT_TYPE_EVENT_PORT = 2,
99 PS3_INTERRUPT_TYPE_SB_OHCI = 3,
100 PS3_INTERRUPT_TYPE_SB_EHCI = 4,
101 PS3_INTERRUPT_TYPE_OTHER = 5,
102};
103
104enum ps3_reg_type {
105 PS3_REG_TYPE_SB_OHCI = 3,
106 PS3_REG_TYPE_SB_EHCI = 4,
107 PS3_REG_TYPE_SB_GPIO = 5,
108};
109
110int ps3_repository_read_dev_str(unsigned int bus_index,
111 unsigned int dev_index, const char *dev_str, u64 *value);
112int ps3_repository_read_dev_id(unsigned int bus_index, unsigned int dev_index,
113 unsigned int *dev_id);
114int ps3_repository_read_dev_type(unsigned int bus_index,
115 unsigned int dev_index, enum ps3_dev_type *dev_type);
116int ps3_repository_read_dev_intr(unsigned int bus_index,
117 unsigned int dev_index, unsigned int intr_index,
118 enum ps3_interrupt_type *intr_type, unsigned int *interrupt_id);
119int ps3_repository_read_dev_reg_type(unsigned int bus_index,
120 unsigned int dev_index, unsigned int reg_index,
121 enum ps3_reg_type *reg_type);
122int ps3_repository_read_dev_reg_addr(unsigned int bus_index,
123 unsigned int dev_index, unsigned int reg_index, u64 *bus_addr,
124 u64 *len);
125int ps3_repository_read_dev_reg(unsigned int bus_index,
126 unsigned int dev_index, unsigned int reg_index,
127 enum ps3_reg_type *reg_type, u64 *bus_addr, u64 *len);
128
129/* repository bus enumerators */
130
131struct ps3_repository_device {
132 unsigned int bus_index;
133 unsigned int dev_index;
134 struct ps3_device_id did;
135};
136
137int ps3_repository_find_device(enum ps3_bus_type bus_type,
138 enum ps3_dev_type dev_type,
139 const struct ps3_repository_device *start_dev,
140 struct ps3_repository_device *dev);
141static inline int ps3_repository_find_first_device(
142 enum ps3_bus_type bus_type, enum ps3_dev_type dev_type,
143 struct ps3_repository_device *dev)
144{
145 return ps3_repository_find_device(bus_type, dev_type, NULL, dev);
146}
147int ps3_repository_find_interrupt(const struct ps3_repository_device *dev,
148 enum ps3_interrupt_type intr_type, unsigned int *interrupt_id);
149int ps3_repository_find_reg(const struct ps3_repository_device *dev,
150 enum ps3_reg_type reg_type, u64 *bus_addr, u64 *len);
151
152/* repository block device info */
153
154int ps3_repository_read_stor_dev_port(unsigned int bus_index,
155 unsigned int dev_index, u64 *port);
156int ps3_repository_read_stor_dev_blk_size(unsigned int bus_index,
157 unsigned int dev_index, u64 *blk_size);
158int ps3_repository_read_stor_dev_num_blocks(unsigned int bus_index,
159 unsigned int dev_index, u64 *num_blocks);
160int ps3_repository_read_stor_dev_num_regions(unsigned int bus_index,
161 unsigned int dev_index, unsigned int *num_regions);
162int ps3_repository_read_stor_dev_region_id(unsigned int bus_index,
163 unsigned int dev_index, unsigned int region_index,
164 unsigned int *region_id);
165int ps3_repository_read_stor_dev_region_size(unsigned int bus_index,
166 unsigned int dev_index, unsigned int region_index, u64 *region_size);
167int ps3_repository_read_stor_dev_region_start(unsigned int bus_index,
168 unsigned int dev_index, unsigned int region_index, u64 *region_start);
169int ps3_repository_read_stor_dev_info(unsigned int bus_index,
170 unsigned int dev_index, u64 *port, u64 *blk_size,
171 u64 *num_blocks, unsigned int *num_regions);
172int ps3_repository_read_stor_dev_region(unsigned int bus_index,
173 unsigned int dev_index, unsigned int region_index,
174 unsigned int *region_id, u64 *region_start, u64 *region_size);
175
176/* repository pu and memory info */
177
178int ps3_repository_read_num_pu(unsigned int *num_pu);
179int ps3_repository_read_ppe_id(unsigned int *pu_index, unsigned int *ppe_id);
180int ps3_repository_read_rm_base(unsigned int ppe_id, u64 *rm_base);
181int ps3_repository_read_rm_size(unsigned int ppe_id, u64 *rm_size);
182int ps3_repository_read_region_total(u64 *region_total);
183int ps3_repository_read_mm_info(u64 *rm_base, u64 *rm_size,
184 u64 *region_total);
185
186/* repository pme info */
187
188int ps3_repository_read_num_be(unsigned int *num_be);
189int ps3_repository_read_be_node_id(unsigned int be_index, u64 *node_id);
190int ps3_repository_read_tb_freq(u64 node_id, u64 *tb_freq);
191int ps3_repository_read_be_tb_freq(unsigned int be_index, u64 *tb_freq);
192
193/* repository 'Other OS' area */
194
195int ps3_repository_read_boot_dat_addr(u64 *lpar_addr);
196int ps3_repository_read_boot_dat_size(unsigned int *size);
197int ps3_repository_read_boot_dat_info(u64 *lpar_addr, unsigned int *size);
198
199/* repository spu info */
200
201/**
202 * enum spu_resource_type - Type of spu resource.
203 * @spu_resource_type_shared: Logical spu is shared with other partions.
204 * @spu_resource_type_exclusive: Logical spu is not shared with other partions.
205 *
206 * Returned by ps3_repository_read_spu_resource_id().
207 */
208
209enum ps3_spu_resource_type {
210 PS3_SPU_RESOURCE_TYPE_SHARED = 0,
211 PS3_SPU_RESOURCE_TYPE_EXCLUSIVE = 0x8000000000000000UL,
212};
213
214int ps3_repository_read_num_spu_reserved(unsigned int *num_spu_reserved);
215int ps3_repository_read_num_spu_resource_id(unsigned int *num_resource_id);
216int ps3_repository_read_spu_resource_id(unsigned int res_index,
217 enum ps3_spu_resource_type* resource_type, unsigned int *resource_id);
218
68#endif 219#endif
diff --git a/arch/powerpc/platforms/ps3/repository.c b/arch/powerpc/platforms/ps3/repository.c
index 2416bfadec9e..ae586a0e5d3f 100644
--- a/arch/powerpc/platforms/ps3/repository.c
+++ b/arch/powerpc/platforms/ps3/repository.c
@@ -18,9 +18,10 @@
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */ 19 */
20 20
21#include <asm/ps3.h>
22#include <asm/lv1call.h> 21#include <asm/lv1call.h>
23 22
23#include "platform.h"
24
24enum ps3_vendor_id { 25enum ps3_vendor_id {
25 PS3_VENDOR_ID_NONE = 0, 26 PS3_VENDOR_ID_NONE = 0,
26 PS3_VENDOR_ID_SONY = 0x8000000000000000UL, 27 PS3_VENDOR_ID_SONY = 0x8000000000000000UL,
diff --git a/arch/powerpc/platforms/ps3/setup.c b/arch/powerpc/platforms/ps3/setup.c
index cb91a81352bf..e62505e18813 100644
--- a/arch/powerpc/platforms/ps3/setup.c
+++ b/arch/powerpc/platforms/ps3/setup.c
@@ -32,7 +32,6 @@
32#include <asm/udbg.h> 32#include <asm/udbg.h>
33#include <asm/prom.h> 33#include <asm/prom.h>
34#include <asm/lv1call.h> 34#include <asm/lv1call.h>
35#include <asm/ps3.h>
36 35
37#include "platform.h" 36#include "platform.h"
38 37
diff --git a/arch/powerpc/platforms/ps3/smp.c b/arch/powerpc/platforms/ps3/smp.c
index bde71b0572bd..6fb887961a6d 100644
--- a/arch/powerpc/platforms/ps3/smp.c
+++ b/arch/powerpc/platforms/ps3/smp.c
@@ -23,7 +23,6 @@
23 23
24#include <asm/machdep.h> 24#include <asm/machdep.h>
25#include <asm/udbg.h> 25#include <asm/udbg.h>
26#include <asm/ps3.h>
27 26
28#include "platform.h" 27#include "platform.h"
29 28
diff --git a/arch/powerpc/platforms/ps3/spu.c b/arch/powerpc/platforms/ps3/spu.c
index 9f6edc58568d..d1929721b0e4 100644
--- a/arch/powerpc/platforms/ps3/spu.c
+++ b/arch/powerpc/platforms/ps3/spu.c
@@ -26,9 +26,10 @@
26 26
27#include <asm/spu.h> 27#include <asm/spu.h>
28#include <asm/spu_priv1.h> 28#include <asm/spu_priv1.h>
29#include <asm/ps3.h>
30#include <asm/lv1call.h> 29#include <asm/lv1call.h>
31 30
31#include "platform.h"
32
32/* spu_management_ops */ 33/* spu_management_ops */
33 34
34/** 35/**
diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
new file mode 100644
index 000000000000..9f2c6a909e4d
--- /dev/null
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -0,0 +1,363 @@
1/*
2 * PS3 system bus driver.
3 *
4 * Copyright (C) 2006 Sony Computer Entertainment Inc.
5 * Copyright 2006 Sony Corp.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
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
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21#include <linux/kernel.h>
22#include <linux/init.h>
23#include <linux/module.h>
24#include <linux/dma-mapping.h>
25#include <linux/err.h>
26
27#include <asm/udbg.h>
28#include <asm/lv1call.h>
29#include <asm/firmware.h>
30
31#include "platform.h"
32
33#define dump_mmio_region(_a) _dump_mmio_region(_a, __func__, __LINE__)
34static void _dump_mmio_region(const struct ps3_mmio_region* r,
35 const char* func, int line)
36{
37 pr_debug("%s:%d: dev %u:%u\n", func, line, r->did.bus_id,
38 r->did.dev_id);
39 pr_debug("%s:%d: bus_addr %lxh\n", func, line, r->bus_addr);
40 pr_debug("%s:%d: len %lxh\n", func, line, r->len);
41 pr_debug("%s:%d: lpar_addr %lxh\n", func, line, r->lpar_addr);
42}
43
44int ps3_mmio_region_create(struct ps3_mmio_region *r)
45{
46 int result;
47
48 result = lv1_map_device_mmio_region(r->did.bus_id, r->did.dev_id,
49 r->bus_addr, r->len, r->page_size, &r->lpar_addr);
50
51 if (result) {
52 pr_debug("%s:%d: lv1_map_device_mmio_region failed: %s\n",
53 __func__, __LINE__, ps3_result(result));
54 r->lpar_addr = 0;
55 }
56
57 dump_mmio_region(r);
58 return result;
59}
60
61int ps3_free_mmio_region(struct ps3_mmio_region *r)
62{
63 int result;
64
65 result = lv1_unmap_device_mmio_region(r->did.bus_id, r->did.dev_id,
66 r->lpar_addr);
67
68 if (result)
69 pr_debug("%s:%d: lv1_unmap_device_mmio_region failed: %s\n",
70 __func__, __LINE__, ps3_result(result));
71
72 r->lpar_addr = 0;
73 return result;
74}
75
76static int ps3_system_bus_match(struct device *_dev,
77 struct device_driver *_drv)
78{
79 int result;
80 struct ps3_system_bus_driver *drv = to_ps3_system_bus_driver(_drv);
81 struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
82
83 result = dev->match_id == drv->match_id;
84
85 pr_info("%s:%d: dev=%u(%s), drv=%u(%s): %s\n", __func__, __LINE__,
86 dev->match_id, dev->core.bus_id, drv->match_id, drv->core.name,
87 (result ? "match" : "miss"));
88 return result;
89}
90
91static int ps3_system_bus_probe(struct device *_dev)
92{
93 int result;
94 struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
95 struct ps3_system_bus_driver *drv =
96 to_ps3_system_bus_driver(_dev->driver);
97
98 result = lv1_open_device(dev->did.bus_id, dev->did.dev_id, 0);
99
100 if (result) {
101 pr_debug("%s:%d: lv1_open_device failed (%d)\n",
102 __func__, __LINE__, result);
103 result = -EACCES;
104 goto clean_none;
105 }
106
107 if (dev->d_region->did.bus_id) {
108 result = ps3_dma_region_create(dev->d_region);
109
110 if (result) {
111 pr_debug("%s:%d: ps3_dma_region_create failed (%d)\n",
112 __func__, __LINE__, result);
113 BUG_ON("check region type");
114 result = -EINVAL;
115 goto clean_device;
116 }
117 }
118
119 BUG_ON(!drv);
120
121 if (drv->probe)
122 result = drv->probe(dev);
123 else
124 pr_info("%s:%d: %s no probe method\n", __func__, __LINE__,
125 dev->core.bus_id);
126
127 if (result) {
128 pr_debug("%s:%d: drv->probe failed\n", __func__, __LINE__);
129 goto clean_dma;
130 }
131
132 return result;
133
134clean_dma:
135 ps3_dma_region_free(dev->d_region);
136clean_device:
137 lv1_close_device(dev->did.bus_id, dev->did.dev_id);
138clean_none:
139 return result;
140}
141
142static int ps3_system_bus_remove(struct device *_dev)
143{
144 struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
145 struct ps3_system_bus_driver *drv =
146 to_ps3_system_bus_driver(_dev->driver);
147
148 if (drv->remove)
149 drv->remove(dev);
150 else
151 pr_info("%s:%d: %s no remove method\n", __func__, __LINE__,
152 dev->core.bus_id);
153
154 ps3_dma_region_free(dev->d_region);
155 ps3_free_mmio_region(dev->m_region);
156 lv1_close_device(dev->did.bus_id, dev->did.dev_id);
157
158 return 0;
159}
160
161struct bus_type ps3_system_bus_type = {
162 .name = "ps3_system_bus",
163 .match = ps3_system_bus_match,
164 .probe = ps3_system_bus_probe,
165 .remove = ps3_system_bus_remove,
166};
167
168int __init ps3_system_bus_init(void)
169{
170 int result;
171
172 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
173 return 0;
174
175 result = bus_register(&ps3_system_bus_type);
176 BUG_ON(result);
177 return result;
178}
179
180core_initcall(ps3_system_bus_init);
181
182/* Allocates a contiguous real buffer and creates mappings over it.
183 * Returns the virtual address of the buffer and sets dma_handle
184 * to the dma address (mapping) of the first page.
185 */
186
187static void * ps3_alloc_coherent(struct device *_dev, size_t size,
188 dma_addr_t *dma_handle, gfp_t flag)
189{
190 int result;
191 struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
192 unsigned long virt_addr;
193
194 BUG_ON(!dev->d_region->bus_addr);
195
196 flag &= ~(__GFP_DMA | __GFP_HIGHMEM);
197 flag |= __GFP_ZERO;
198
199 virt_addr = __get_free_pages(flag, get_order(size));
200
201 if (!virt_addr) {
202 pr_debug("%s:%d: get_free_pages failed\n", __func__, __LINE__);
203 goto clean_none;
204 }
205
206 result = ps3_dma_map(dev->d_region, virt_addr, size, dma_handle);
207
208 if (result) {
209 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
210 __func__, __LINE__, result);
211 BUG_ON("check region type");
212 goto clean_alloc;
213 }
214
215 return (void*)virt_addr;
216
217clean_alloc:
218 free_pages(virt_addr, get_order(size));
219clean_none:
220 dma_handle = NULL;
221 return NULL;
222}
223
224static void ps3_free_coherent(struct device *_dev, size_t size, void *vaddr,
225 dma_addr_t dma_handle)
226{
227 struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
228
229 ps3_dma_unmap(dev->d_region, dma_handle, size);
230 free_pages((unsigned long)vaddr, get_order(size));
231}
232
233/* Creates TCEs for a user provided buffer. The user buffer must be
234 * contiguous real kernel storage (not vmalloc). The address of the buffer
235 * passed here is the kernel (virtual) address of the buffer. The buffer
236 * need not be page aligned, the dma_addr_t returned will point to the same
237 * byte within the page as vaddr.
238 */
239
240static dma_addr_t ps3_map_single(struct device *_dev, void *ptr, size_t size,
241 enum dma_data_direction direction)
242{
243 struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
244 int result;
245 unsigned long bus_addr;
246
247 result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
248 &bus_addr);
249
250 if (result) {
251 pr_debug("%s:%d: ps3_dma_map failed (%d)\n",
252 __func__, __LINE__, result);
253 }
254
255 return bus_addr;
256}
257
258static void ps3_unmap_single(struct device *_dev, dma_addr_t dma_addr,
259 size_t size, enum dma_data_direction direction)
260{
261 struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
262 int result;
263
264 result = ps3_dma_unmap(dev->d_region, dma_addr, size);
265
266 if (result) {
267 pr_debug("%s:%d: ps3_dma_unmap failed (%d)\n",
268 __func__, __LINE__, result);
269 }
270}
271
272static int ps3_map_sg(struct device *_dev, struct scatterlist *sg, int nents,
273 enum dma_data_direction direction)
274{
275#if defined(CONFIG_PS3_DYNAMIC_DMA)
276 BUG_ON("do");
277#endif
278 return 0;
279}
280
281static void ps3_unmap_sg(struct device *_dev, struct scatterlist *sg,
282 int nents, enum dma_data_direction direction)
283{
284#if defined(CONFIG_PS3_DYNAMIC_DMA)
285 BUG_ON("do");
286#endif
287}
288
289static int ps3_dma_supported(struct device *_dev, u64 mask)
290{
291 return 1;
292}
293
294static struct dma_mapping_ops ps3_dma_ops = {
295 .alloc_coherent = ps3_alloc_coherent,
296 .free_coherent = ps3_free_coherent,
297 .map_single = ps3_map_single,
298 .unmap_single = ps3_unmap_single,
299 .map_sg = ps3_map_sg,
300 .unmap_sg = ps3_unmap_sg,
301 .dma_supported = ps3_dma_supported
302};
303
304/**
305 * ps3_system_bus_release_device - remove a device from the system bus
306 */
307
308static void ps3_system_bus_release_device(struct device *_dev)
309{
310 struct ps3_system_bus_device *dev = to_ps3_system_bus_device(_dev);
311 kfree(dev);
312}
313
314/**
315 * ps3_system_bus_device_register - add a device to the system bus
316 *
317 * ps3_system_bus_device_register() expects the dev object to be allocated
318 * dynamically by the caller. The system bus takes ownership of the dev
319 * object and frees the object in ps3_system_bus_release_device().
320 */
321
322int ps3_system_bus_device_register(struct ps3_system_bus_device *dev)
323{
324 int result;
325 static unsigned int dev_count = 1;
326
327 dev->core.parent = NULL;
328 dev->core.bus = &ps3_system_bus_type;
329 dev->core.release = ps3_system_bus_release_device;
330
331 dev->core.archdata.of_node = NULL;
332 dev->core.archdata.dma_ops = &ps3_dma_ops;
333 dev->core.archdata.numa_node = 0;
334
335 snprintf(dev->core.bus_id, sizeof(dev->core.bus_id), "sb_%02x",
336 dev_count++);
337
338 pr_debug("%s:%d add %s\n", __func__, __LINE__, dev->core.bus_id);
339
340 result = device_register(&dev->core);
341 return result;
342}
343
344EXPORT_SYMBOL_GPL(ps3_system_bus_device_register);
345
346int ps3_system_bus_driver_register(struct ps3_system_bus_driver *drv)
347{
348 int result;
349
350 drv->core.bus = &ps3_system_bus_type;
351
352 result = driver_register(&drv->core);
353 return result;
354}
355
356EXPORT_SYMBOL_GPL(ps3_system_bus_driver_register);
357
358void ps3_system_bus_driver_unregister(struct ps3_system_bus_driver *drv)
359{
360 driver_unregister(&drv->core);
361}
362
363EXPORT_SYMBOL_GPL(ps3_system_bus_driver_unregister);