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-rw-r--r--drivers/firewire/core.h293
-rw-r--r--drivers/firewire/fw-card.c6
-rw-r--r--drivers/firewire/fw-cdev.c5
-rw-r--r--drivers/firewire/fw-device.c9
-rw-r--r--drivers/firewire/fw-device.h190
-rw-r--r--drivers/firewire/fw-iso.c4
-rw-r--r--drivers/firewire/fw-ohci.c5
-rw-r--r--drivers/firewire/fw-sbp2.c4
-rw-r--r--drivers/firewire/fw-topology.c10
-rw-r--r--drivers/firewire/fw-topology.h77
-rw-r--r--drivers/firewire/fw-transaction.c8
-rw-r--r--drivers/firewire/fw-transaction.h446
-rw-r--r--drivers/firewire/ohci.h (renamed from drivers/firewire/fw-ohci.h)6
-rw-r--r--include/linux/firewire.h350
14 files changed, 676 insertions, 737 deletions
diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h
new file mode 100644
index 000000000000..273f0ab82928
--- /dev/null
+++ b/drivers/firewire/core.h
@@ -0,0 +1,293 @@
1#ifndef _FIREWIRE_CORE_H
2#define _FIREWIRE_CORE_H
3
4#include <linux/dma-mapping.h>
5#include <linux/fs.h>
6#include <linux/list.h>
7#include <linux/idr.h>
8#include <linux/mm_types.h>
9#include <linux/rwsem.h>
10#include <linux/slab.h>
11#include <linux/types.h>
12
13#include <asm/atomic.h>
14
15struct device;
16struct fw_card;
17struct fw_device;
18struct fw_iso_buffer;
19struct fw_iso_context;
20struct fw_iso_packet;
21struct fw_node;
22struct fw_packet;
23
24
25/* -card */
26
27/* bitfields within the PHY registers */
28#define PHY_LINK_ACTIVE 0x80
29#define PHY_CONTENDER 0x40
30#define PHY_BUS_RESET 0x40
31#define PHY_BUS_SHORT_RESET 0x40
32
33#define BANDWIDTH_AVAILABLE_INITIAL 4915
34#define BROADCAST_CHANNEL_INITIAL (1 << 31 | 31)
35#define BROADCAST_CHANNEL_VALID (1 << 30)
36
37struct fw_card_driver {
38 /*
39 * Enable the given card with the given initial config rom.
40 * This function is expected to activate the card, and either
41 * enable the PHY or set the link_on bit and initiate a bus
42 * reset.
43 */
44 int (*enable)(struct fw_card *card, u32 *config_rom, size_t length);
45
46 int (*update_phy_reg)(struct fw_card *card, int address,
47 int clear_bits, int set_bits);
48
49 /*
50 * Update the config rom for an enabled card. This function
51 * should change the config rom that is presented on the bus
52 * an initiate a bus reset.
53 */
54 int (*set_config_rom)(struct fw_card *card,
55 u32 *config_rom, size_t length);
56
57 void (*send_request)(struct fw_card *card, struct fw_packet *packet);
58 void (*send_response)(struct fw_card *card, struct fw_packet *packet);
59 /* Calling cancel is valid once a packet has been submitted. */
60 int (*cancel_packet)(struct fw_card *card, struct fw_packet *packet);
61
62 /*
63 * Allow the specified node ID to do direct DMA out and in of
64 * host memory. The card will disable this for all node when
65 * a bus reset happens, so driver need to reenable this after
66 * bus reset. Returns 0 on success, -ENODEV if the card
67 * doesn't support this, -ESTALE if the generation doesn't
68 * match.
69 */
70 int (*enable_phys_dma)(struct fw_card *card,
71 int node_id, int generation);
72
73 u64 (*get_bus_time)(struct fw_card *card);
74
75 struct fw_iso_context *
76 (*allocate_iso_context)(struct fw_card *card,
77 int type, int channel, size_t header_size);
78 void (*free_iso_context)(struct fw_iso_context *ctx);
79
80 int (*start_iso)(struct fw_iso_context *ctx,
81 s32 cycle, u32 sync, u32 tags);
82
83 int (*queue_iso)(struct fw_iso_context *ctx,
84 struct fw_iso_packet *packet,
85 struct fw_iso_buffer *buffer,
86 unsigned long payload);
87
88 int (*stop_iso)(struct fw_iso_context *ctx);
89};
90
91void fw_card_initialize(struct fw_card *card,
92 const struct fw_card_driver *driver, struct device *device);
93int fw_card_add(struct fw_card *card,
94 u32 max_receive, u32 link_speed, u64 guid);
95void fw_core_remove_card(struct fw_card *card);
96int fw_core_initiate_bus_reset(struct fw_card *card, int short_reset);
97int fw_compute_block_crc(u32 *block);
98void fw_schedule_bm_work(struct fw_card *card, unsigned long delay);
99
100struct fw_descriptor {
101 struct list_head link;
102 size_t length;
103 u32 immediate;
104 u32 key;
105 const u32 *data;
106};
107
108int fw_core_add_descriptor(struct fw_descriptor *desc);
109void fw_core_remove_descriptor(struct fw_descriptor *desc);
110
111
112/* -cdev */
113
114extern const struct file_operations fw_device_ops;
115
116void fw_device_cdev_update(struct fw_device *device);
117void fw_device_cdev_remove(struct fw_device *device);
118
119
120/* -device */
121
122extern struct rw_semaphore fw_device_rwsem;
123extern struct idr fw_device_idr;
124extern int fw_cdev_major;
125
126struct fw_device *fw_device_get_by_devt(dev_t devt);
127void fw_device_set_broadcast_channel(struct fw_device *device, int generation);
128void fw_node_event(struct fw_card *card, struct fw_node *node, int event);
129
130
131/* -iso */
132
133/*
134 * The iso packet format allows for an immediate header/payload part
135 * stored in 'header' immediately after the packet info plus an
136 * indirect payload part that is pointer to by the 'payload' field.
137 * Applications can use one or the other or both to implement simple
138 * low-bandwidth streaming (e.g. audio) or more advanced
139 * scatter-gather streaming (e.g. assembling video frame automatically).
140 */
141struct fw_iso_packet {
142 u16 payload_length; /* Length of indirect payload. */
143 u32 interrupt:1; /* Generate interrupt on this packet */
144 u32 skip:1; /* Set to not send packet at all. */
145 u32 tag:2;
146 u32 sy:4;
147 u32 header_length:8; /* Length of immediate header. */
148 u32 header[0];
149};
150
151#define FW_ISO_CONTEXT_TRANSMIT 0
152#define FW_ISO_CONTEXT_RECEIVE 1
153
154#define FW_ISO_CONTEXT_MATCH_TAG0 1
155#define FW_ISO_CONTEXT_MATCH_TAG1 2
156#define FW_ISO_CONTEXT_MATCH_TAG2 4
157#define FW_ISO_CONTEXT_MATCH_TAG3 8
158#define FW_ISO_CONTEXT_MATCH_ALL_TAGS 15
159
160/*
161 * An iso buffer is just a set of pages mapped for DMA in the
162 * specified direction. Since the pages are to be used for DMA, they
163 * are not mapped into the kernel virtual address space. We store the
164 * DMA address in the page private. The helper function
165 * fw_iso_buffer_map() will map the pages into a given vma.
166 */
167struct fw_iso_buffer {
168 enum dma_data_direction direction;
169 struct page **pages;
170 int page_count;
171};
172
173typedef void (*fw_iso_callback_t)(struct fw_iso_context *context,
174 u32 cycle, size_t header_length,
175 void *header, void *data);
176
177struct fw_iso_context {
178 struct fw_card *card;
179 int type;
180 int channel;
181 int speed;
182 size_t header_size;
183 fw_iso_callback_t callback;
184 void *callback_data;
185};
186
187int fw_iso_buffer_init(struct fw_iso_buffer *buffer, struct fw_card *card,
188 int page_count, enum dma_data_direction direction);
189int fw_iso_buffer_map(struct fw_iso_buffer *buffer, struct vm_area_struct *vma);
190void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer, struct fw_card *card);
191
192struct fw_iso_context *fw_iso_context_create(struct fw_card *card,
193 int type, int channel, int speed, size_t header_size,
194 fw_iso_callback_t callback, void *callback_data);
195int fw_iso_context_queue(struct fw_iso_context *ctx,
196 struct fw_iso_packet *packet,
197 struct fw_iso_buffer *buffer,
198 unsigned long payload);
199int fw_iso_context_start(struct fw_iso_context *ctx,
200 int cycle, int sync, int tags);
201int fw_iso_context_stop(struct fw_iso_context *ctx);
202void fw_iso_context_destroy(struct fw_iso_context *ctx);
203
204void fw_iso_resource_manage(struct fw_card *card, int generation,
205 u64 channels_mask, int *channel, int *bandwidth, bool allocate);
206
207
208/* -topology */
209
210enum {
211 FW_NODE_CREATED,
212 FW_NODE_UPDATED,
213 FW_NODE_DESTROYED,
214 FW_NODE_LINK_ON,
215 FW_NODE_LINK_OFF,
216 FW_NODE_INITIATED_RESET,
217};
218
219struct fw_node {
220 u16 node_id;
221 u8 color;
222 u8 port_count;
223 u8 link_on:1;
224 u8 initiated_reset:1;
225 u8 b_path:1;
226 u8 phy_speed:2; /* As in the self ID packet. */
227 u8 max_speed:2; /* Minimum of all phy-speeds on the path from the
228 * local node to this node. */
229 u8 max_depth:4; /* Maximum depth to any leaf node */
230 u8 max_hops:4; /* Max hops in this sub tree */
231 atomic_t ref_count;
232
233 /* For serializing node topology into a list. */
234 struct list_head link;
235
236 /* Upper layer specific data. */
237 void *data;
238
239 struct fw_node *ports[0];
240};
241
242static inline struct fw_node *fw_node_get(struct fw_node *node)
243{
244 atomic_inc(&node->ref_count);
245
246 return node;
247}
248
249static inline void fw_node_put(struct fw_node *node)
250{
251 if (atomic_dec_and_test(&node->ref_count))
252 kfree(node);
253}
254
255void fw_core_handle_bus_reset(struct fw_card *card, int node_id,
256 int generation, int self_id_count, u32 *self_ids);
257void fw_destroy_nodes(struct fw_card *card);
258
259/*
260 * Check whether new_generation is the immediate successor of old_generation.
261 * Take counter roll-over at 255 (as per OHCI) into account.
262 */
263static inline bool is_next_generation(int new_generation, int old_generation)
264{
265 return (new_generation & 0xff) == ((old_generation + 1) & 0xff);
266}
267
268
269/* -transaction */
270
271#define TCODE_IS_READ_REQUEST(tcode) (((tcode) & ~1) == 4)
272#define TCODE_IS_BLOCK_PACKET(tcode) (((tcode) & 1) != 0)
273#define TCODE_IS_REQUEST(tcode) (((tcode) & 2) == 0)
274#define TCODE_IS_RESPONSE(tcode) (((tcode) & 2) != 0)
275#define TCODE_HAS_REQUEST_DATA(tcode) (((tcode) & 12) != 4)
276#define TCODE_HAS_RESPONSE_DATA(tcode) (((tcode) & 12) != 0)
277
278#define LOCAL_BUS 0xffc0
279
280void fw_core_handle_request(struct fw_card *card, struct fw_packet *request);
281void fw_core_handle_response(struct fw_card *card, struct fw_packet *packet);
282void fw_fill_response(struct fw_packet *response, u32 *request_header,
283 int rcode, void *payload, size_t length);
284void fw_flush_transactions(struct fw_card *card);
285void fw_send_phy_config(struct fw_card *card,
286 int node_id, int generation, int gap_count);
287
288static inline int fw_stream_packet_destination_id(int tag, int channel, int sy)
289{
290 return tag << 14 | channel << 8 | sy;
291}
292
293#endif /* _FIREWIRE_CORE_H */
diff --git a/drivers/firewire/fw-card.c b/drivers/firewire/fw-card.c
index b6f55e262e7f..ba6cd70b8518 100644
--- a/drivers/firewire/fw-card.c
+++ b/drivers/firewire/fw-card.c
@@ -21,6 +21,8 @@
21#include <linux/crc-itu-t.h> 21#include <linux/crc-itu-t.h>
22#include <linux/device.h> 22#include <linux/device.h>
23#include <linux/errno.h> 23#include <linux/errno.h>
24#include <linux/firewire.h>
25#include <linux/firewire-constants.h>
24#include <linux/jiffies.h> 26#include <linux/jiffies.h>
25#include <linux/kernel.h> 27#include <linux/kernel.h>
26#include <linux/kref.h> 28#include <linux/kref.h>
@@ -34,9 +36,7 @@
34#include <asm/atomic.h> 36#include <asm/atomic.h>
35#include <asm/byteorder.h> 37#include <asm/byteorder.h>
36 38
37#include "fw-device.h" 39#include "core.h"
38#include "fw-topology.h"
39#include "fw-transaction.h"
40 40
41int fw_compute_block_crc(u32 *block) 41int fw_compute_block_crc(u32 *block)
42{ 42{
diff --git a/drivers/firewire/fw-cdev.c b/drivers/firewire/fw-cdev.c
index 8a5e6ae2552c..042c04540474 100644
--- a/drivers/firewire/fw-cdev.c
+++ b/drivers/firewire/fw-cdev.c
@@ -22,6 +22,7 @@
22#include <linux/delay.h> 22#include <linux/delay.h>
23#include <linux/device.h> 23#include <linux/device.h>
24#include <linux/errno.h> 24#include <linux/errno.h>
25#include <linux/firewire.h>
25#include <linux/firewire-cdev.h> 26#include <linux/firewire-cdev.h>
26#include <linux/idr.h> 27#include <linux/idr.h>
27#include <linux/jiffies.h> 28#include <linux/jiffies.h>
@@ -41,9 +42,7 @@
41#include <asm/system.h> 42#include <asm/system.h>
42#include <asm/uaccess.h> 43#include <asm/uaccess.h>
43 44
44#include "fw-device.h" 45#include "core.h"
45#include "fw-topology.h"
46#include "fw-transaction.h"
47 46
48struct client { 47struct client {
49 u32 version; 48 u32 version;
diff --git a/drivers/firewire/fw-device.c b/drivers/firewire/fw-device.c
index 238acac5badb..65d84dd6c1de 100644
--- a/drivers/firewire/fw-device.c
+++ b/drivers/firewire/fw-device.c
@@ -22,6 +22,8 @@
22#include <linux/delay.h> 22#include <linux/delay.h>
23#include <linux/device.h> 23#include <linux/device.h>
24#include <linux/errno.h> 24#include <linux/errno.h>
25#include <linux/firewire.h>
26#include <linux/firewire-constants.h>
25#include <linux/idr.h> 27#include <linux/idr.h>
26#include <linux/jiffies.h> 28#include <linux/jiffies.h>
27#include <linux/kobject.h> 29#include <linux/kobject.h>
@@ -39,9 +41,7 @@
39#include <asm/byteorder.h> 41#include <asm/byteorder.h>
40#include <asm/system.h> 42#include <asm/system.h>
41 43
42#include "fw-device.h" 44#include "core.h"
43#include "fw-topology.h"
44#include "fw-transaction.h"
45 45
46void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 * p) 46void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 * p)
47{ 47{
@@ -94,8 +94,9 @@ static int fw_unit_match(struct device *dev, struct device_driver *drv)
94 return 0; 94 return 0;
95 95
96 device = fw_device(unit->device.parent); 96 device = fw_device(unit->device.parent);
97 id = container_of(drv, struct fw_driver, driver)->id_table;
97 98
98 for (id = fw_driver(drv)->id_table; id->match_flags != 0; id++) { 99 for (; id->match_flags != 0; id++) {
99 if (match_unit_directory(unit->directory, id->match_flags, id)) 100 if (match_unit_directory(unit->directory, id->match_flags, id))
100 return 1; 101 return 1;
101 102
diff --git a/drivers/firewire/fw-device.h b/drivers/firewire/fw-device.h
deleted file mode 100644
index e973c4361f48..000000000000
--- a/drivers/firewire/fw-device.h
+++ /dev/null
@@ -1,190 +0,0 @@
1/*
2 * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19#ifndef __fw_device_h
20#define __fw_device_h
21
22#include <linux/device.h>
23#include <linux/fs.h>
24#include <linux/idr.h>
25#include <linux/kernel.h>
26#include <linux/list.h>
27#include <linux/mod_devicetable.h>
28#include <linux/mutex.h>
29#include <linux/rwsem.h>
30#include <linux/sysfs.h>
31#include <linux/types.h>
32#include <linux/workqueue.h>
33
34#include <asm/atomic.h>
35
36enum fw_device_state {
37 FW_DEVICE_INITIALIZING,
38 FW_DEVICE_RUNNING,
39 FW_DEVICE_GONE,
40 FW_DEVICE_SHUTDOWN,
41};
42
43struct fw_attribute_group {
44 struct attribute_group *groups[2];
45 struct attribute_group group;
46 struct attribute *attrs[12];
47};
48
49struct fw_node;
50struct fw_card;
51
52/*
53 * Note, fw_device.generation always has to be read before fw_device.node_id.
54 * Use SMP memory barriers to ensure this. Otherwise requests will be sent
55 * to an outdated node_id if the generation was updated in the meantime due
56 * to a bus reset.
57 *
58 * Likewise, fw-core will take care to update .node_id before .generation so
59 * that whenever fw_device.generation is current WRT the actual bus generation,
60 * fw_device.node_id is guaranteed to be current too.
61 *
62 * The same applies to fw_device.card->node_id vs. fw_device.generation.
63 *
64 * fw_device.config_rom and fw_device.config_rom_length may be accessed during
65 * the lifetime of any fw_unit belonging to the fw_device, before device_del()
66 * was called on the last fw_unit. Alternatively, they may be accessed while
67 * holding fw_device_rwsem.
68 */
69struct fw_device {
70 atomic_t state;
71 struct fw_node *node;
72 int node_id;
73 int generation;
74 unsigned max_speed;
75 struct fw_card *card;
76 struct device device;
77
78 struct mutex client_list_mutex;
79 struct list_head client_list;
80
81 u32 *config_rom;
82 size_t config_rom_length;
83 int config_rom_retries;
84 unsigned is_local:1;
85 unsigned cmc:1;
86 unsigned bc_implemented:2;
87
88 struct delayed_work work;
89 struct fw_attribute_group attribute_group;
90};
91
92static inline struct fw_device *fw_device(struct device *dev)
93{
94 return container_of(dev, struct fw_device, device);
95}
96
97static inline int fw_device_is_shutdown(struct fw_device *device)
98{
99 return atomic_read(&device->state) == FW_DEVICE_SHUTDOWN;
100}
101
102static inline struct fw_device *fw_device_get(struct fw_device *device)
103{
104 get_device(&device->device);
105
106 return device;
107}
108
109static inline void fw_device_put(struct fw_device *device)
110{
111 put_device(&device->device);
112}
113
114struct fw_device *fw_device_get_by_devt(dev_t devt);
115int fw_device_enable_phys_dma(struct fw_device *device);
116void fw_device_set_broadcast_channel(struct fw_device *device, int generation);
117
118void fw_device_cdev_update(struct fw_device *device);
119void fw_device_cdev_remove(struct fw_device *device);
120
121extern struct rw_semaphore fw_device_rwsem;
122extern struct idr fw_device_idr;
123extern int fw_cdev_major;
124
125/*
126 * fw_unit.directory must not be accessed after device_del(&fw_unit.device).
127 */
128struct fw_unit {
129 struct device device;
130 u32 *directory;
131 struct fw_attribute_group attribute_group;
132};
133
134static inline struct fw_unit *fw_unit(struct device *dev)
135{
136 return container_of(dev, struct fw_unit, device);
137}
138
139static inline struct fw_unit *fw_unit_get(struct fw_unit *unit)
140{
141 get_device(&unit->device);
142
143 return unit;
144}
145
146static inline void fw_unit_put(struct fw_unit *unit)
147{
148 put_device(&unit->device);
149}
150
151#define CSR_OFFSET 0x40
152#define CSR_LEAF 0x80
153#define CSR_DIRECTORY 0xc0
154
155#define CSR_DESCRIPTOR 0x01
156#define CSR_VENDOR 0x03
157#define CSR_HARDWARE_VERSION 0x04
158#define CSR_NODE_CAPABILITIES 0x0c
159#define CSR_UNIT 0x11
160#define CSR_SPECIFIER_ID 0x12
161#define CSR_VERSION 0x13
162#define CSR_DEPENDENT_INFO 0x14
163#define CSR_MODEL 0x17
164#define CSR_INSTANCE 0x18
165#define CSR_DIRECTORY_ID 0x20
166
167struct fw_csr_iterator {
168 u32 *p;
169 u32 *end;
170};
171
172void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 *p);
173int fw_csr_iterator_next(struct fw_csr_iterator *ci,
174 int *key, int *value);
175
176struct fw_driver {
177 struct device_driver driver;
178 /* Called when the parent device sits through a bus reset. */
179 void (*update)(struct fw_unit *unit);
180 const struct ieee1394_device_id *id_table;
181};
182
183static inline struct fw_driver *fw_driver(struct device_driver *drv)
184{
185 return container_of(drv, struct fw_driver, driver);
186}
187
188extern const struct file_operations fw_device_ops;
189
190#endif /* __fw_device_h */
diff --git a/drivers/firewire/fw-iso.c b/drivers/firewire/fw-iso.c
index 0ff3e9c42eb1..28076c892d7e 100644
--- a/drivers/firewire/fw-iso.c
+++ b/drivers/firewire/fw-iso.c
@@ -22,6 +22,7 @@
22 22
23#include <linux/dma-mapping.h> 23#include <linux/dma-mapping.h>
24#include <linux/errno.h> 24#include <linux/errno.h>
25#include <linux/firewire.h>
25#include <linux/firewire-constants.h> 26#include <linux/firewire-constants.h>
26#include <linux/kernel.h> 27#include <linux/kernel.h>
27#include <linux/mm.h> 28#include <linux/mm.h>
@@ -30,8 +31,7 @@
30 31
31#include <asm/byteorder.h> 32#include <asm/byteorder.h>
32 33
33#include "fw-topology.h" 34#include "core.h"
34#include "fw-transaction.h"
35 35
36/* 36/*
37 * Isochronous DMA context management 37 * Isochronous DMA context management
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c
index d296d12909d6..ecddd11b797a 100644
--- a/drivers/firewire/fw-ohci.c
+++ b/drivers/firewire/fw-ohci.c
@@ -22,6 +22,7 @@
22#include <linux/delay.h> 22#include <linux/delay.h>
23#include <linux/device.h> 23#include <linux/device.h>
24#include <linux/dma-mapping.h> 24#include <linux/dma-mapping.h>
25#include <linux/firewire.h>
25#include <linux/firewire-constants.h> 26#include <linux/firewire-constants.h>
26#include <linux/gfp.h> 27#include <linux/gfp.h>
27#include <linux/init.h> 28#include <linux/init.h>
@@ -45,8 +46,8 @@
45#include <asm/pmac_feature.h> 46#include <asm/pmac_feature.h>
46#endif 47#endif
47 48
48#include "fw-ohci.h" 49#include "core.h"
49#include "fw-transaction.h" 50#include "ohci.h"
50 51
51#define DESCRIPTOR_OUTPUT_MORE 0 52#define DESCRIPTOR_OUTPUT_MORE 0
52#define DESCRIPTOR_OUTPUT_LAST (1 << 12) 53#define DESCRIPTOR_OUTPUT_LAST (1 << 12)
diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c
index 027b91f4a6e7..d41cb6e455bc 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -34,6 +34,7 @@
34#include <linux/delay.h> 34#include <linux/delay.h>
35#include <linux/device.h> 35#include <linux/device.h>
36#include <linux/dma-mapping.h> 36#include <linux/dma-mapping.h>
37#include <linux/firewire.h>
37#include <linux/firewire-constants.h> 38#include <linux/firewire-constants.h>
38#include <linux/init.h> 39#include <linux/init.h>
39#include <linux/jiffies.h> 40#include <linux/jiffies.h>
@@ -58,9 +59,6 @@
58#include <scsi/scsi_device.h> 59#include <scsi/scsi_device.h>
59#include <scsi/scsi_host.h> 60#include <scsi/scsi_host.h>
60 61
61#include "fw-device.h"
62#include "fw-transaction.h"
63
64/* 62/*
65 * So far only bridges from Oxford Semiconductor are known to support 63 * So far only bridges from Oxford Semiconductor are known to support
66 * concurrent logins. Depending on firmware, four or two concurrent logins 64 * concurrent logins. Depending on firmware, four or two concurrent logins
diff --git a/drivers/firewire/fw-topology.c b/drivers/firewire/fw-topology.c
index 6d0ea1bb7e23..fddf2b358936 100644
--- a/drivers/firewire/fw-topology.c
+++ b/drivers/firewire/fw-topology.c
@@ -20,6 +20,8 @@
20 20
21#include <linux/bug.h> 21#include <linux/bug.h>
22#include <linux/errno.h> 22#include <linux/errno.h>
23#include <linux/firewire.h>
24#include <linux/firewire-constants.h>
23#include <linux/jiffies.h> 25#include <linux/jiffies.h>
24#include <linux/kernel.h> 26#include <linux/kernel.h>
25#include <linux/list.h> 27#include <linux/list.h>
@@ -31,8 +33,7 @@
31#include <asm/atomic.h> 33#include <asm/atomic.h>
32#include <asm/system.h> 34#include <asm/system.h>
33 35
34#include "fw-topology.h" 36#include "core.h"
35#include "fw-transaction.h"
36 37
37#define SELF_ID_PHY_ID(q) (((q) >> 24) & 0x3f) 38#define SELF_ID_PHY_ID(q) (((q) >> 24) & 0x3f)
38#define SELF_ID_EXTENDED(q) (((q) >> 23) & 0x01) 39#define SELF_ID_EXTENDED(q) (((q) >> 23) & 0x01)
@@ -45,6 +46,11 @@
45 46
46#define SELF_ID_EXT_SEQUENCE(q) (((q) >> 20) & 0x07) 47#define SELF_ID_EXT_SEQUENCE(q) (((q) >> 20) & 0x07)
47 48
49#define SELFID_PORT_CHILD 0x3
50#define SELFID_PORT_PARENT 0x2
51#define SELFID_PORT_NCONN 0x1
52#define SELFID_PORT_NONE 0x0
53
48static u32 *count_ports(u32 *sid, int *total_port_count, int *child_port_count) 54static u32 *count_ports(u32 *sid, int *total_port_count, int *child_port_count)
49{ 55{
50 u32 q; 56 u32 q;
diff --git a/drivers/firewire/fw-topology.h b/drivers/firewire/fw-topology.h
deleted file mode 100644
index 3c497bb4fae4..000000000000
--- a/drivers/firewire/fw-topology.h
+++ /dev/null
@@ -1,77 +0,0 @@
1/*
2 * Copyright (C) 2003-2006 Kristian Hoegsberg <krh@bitplanet.net>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19#ifndef __fw_topology_h
20#define __fw_topology_h
21
22#include <linux/list.h>
23#include <linux/slab.h>
24
25#include <asm/atomic.h>
26
27enum {
28 FW_NODE_CREATED,
29 FW_NODE_UPDATED,
30 FW_NODE_DESTROYED,
31 FW_NODE_LINK_ON,
32 FW_NODE_LINK_OFF,
33 FW_NODE_INITIATED_RESET,
34};
35
36struct fw_node {
37 u16 node_id;
38 u8 color;
39 u8 port_count;
40 u8 link_on : 1;
41 u8 initiated_reset : 1;
42 u8 b_path : 1;
43 u8 phy_speed : 2; /* As in the self ID packet. */
44 u8 max_speed : 2; /* Minimum of all phy-speeds on the path from the
45 * local node to this node. */
46 u8 max_depth : 4; /* Maximum depth to any leaf node */
47 u8 max_hops : 4; /* Max hops in this sub tree */
48 atomic_t ref_count;
49
50 /* For serializing node topology into a list. */
51 struct list_head link;
52
53 /* Upper layer specific data. */
54 void *data;
55
56 struct fw_node *ports[0];
57};
58
59static inline struct fw_node *fw_node_get(struct fw_node *node)
60{
61 atomic_inc(&node->ref_count);
62
63 return node;
64}
65
66static inline void fw_node_put(struct fw_node *node)
67{
68 if (atomic_dec_and_test(&node->ref_count))
69 kfree(node);
70}
71
72struct fw_card;
73void fw_destroy_nodes(struct fw_card *card);
74
75int fw_compute_block_crc(u32 *block);
76
77#endif /* __fw_topology_h */
diff --git a/drivers/firewire/fw-transaction.c b/drivers/firewire/fw-transaction.c
index 7008214e3336..9a6ce9ab2a67 100644
--- a/drivers/firewire/fw-transaction.c
+++ b/drivers/firewire/fw-transaction.c
@@ -22,6 +22,7 @@
22#include <linux/completion.h> 22#include <linux/completion.h>
23#include <linux/device.h> 23#include <linux/device.h>
24#include <linux/errno.h> 24#include <linux/errno.h>
25#include <linux/firewire.h>
25#include <linux/firewire-constants.h> 26#include <linux/firewire-constants.h>
26#include <linux/fs.h> 27#include <linux/fs.h>
27#include <linux/init.h> 28#include <linux/init.h>
@@ -38,8 +39,7 @@
38 39
39#include <asm/byteorder.h> 40#include <asm/byteorder.h>
40 41
41#include "fw-device.h" /* for fw_device_ops */ 42#include "core.h"
42#include "fw-transaction.h"
43 43
44#define HEADER_PRI(pri) ((pri) << 0) 44#define HEADER_PRI(pri) ((pri) << 0)
45#define HEADER_TCODE(tcode) ((tcode) << 4) 45#define HEADER_TCODE(tcode) ((tcode) << 4)
@@ -64,6 +64,10 @@
64#define HEADER_DESTINATION_IS_BROADCAST(q) \ 64#define HEADER_DESTINATION_IS_BROADCAST(q) \
65 (((q) & HEADER_DESTINATION(0x3f)) == HEADER_DESTINATION(0x3f)) 65 (((q) & HEADER_DESTINATION(0x3f)) == HEADER_DESTINATION(0x3f))
66 66
67#define PHY_PACKET_CONFIG 0x0
68#define PHY_PACKET_LINK_ON 0x1
69#define PHY_PACKET_SELF_ID 0x2
70
67#define PHY_CONFIG_GAP_COUNT(gap_count) (((gap_count) << 16) | (1 << 22)) 71#define PHY_CONFIG_GAP_COUNT(gap_count) (((gap_count) << 16) | (1 << 22))
68#define PHY_CONFIG_ROOT_ID(node_id) ((((node_id) & 0x3f) << 24) | (1 << 23)) 72#define PHY_CONFIG_ROOT_ID(node_id) ((((node_id) & 0x3f) << 24) | (1 << 23))
69#define PHY_IDENTIFIER(id) ((id) << 30) 73#define PHY_IDENTIFIER(id) ((id) << 30)
diff --git a/drivers/firewire/fw-transaction.h b/drivers/firewire/fw-transaction.h
deleted file mode 100644
index dfa799068f89..000000000000
--- a/drivers/firewire/fw-transaction.h
+++ /dev/null
@@ -1,446 +0,0 @@
1/*
2 * Copyright (C) 2003-2006 Kristian Hoegsberg <krh@bitplanet.net>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19#ifndef __fw_transaction_h
20#define __fw_transaction_h
21
22#include <linux/completion.h>
23#include <linux/device.h>
24#include <linux/dma-mapping.h>
25#include <linux/firewire-constants.h>
26#include <linux/kref.h>
27#include <linux/list.h>
28#include <linux/spinlock_types.h>
29#include <linux/timer.h>
30#include <linux/types.h>
31#include <linux/workqueue.h>
32
33#define TCODE_IS_READ_REQUEST(tcode) (((tcode) & ~1) == 4)
34#define TCODE_IS_BLOCK_PACKET(tcode) (((tcode) & 1) != 0)
35#define TCODE_IS_REQUEST(tcode) (((tcode) & 2) == 0)
36#define TCODE_IS_RESPONSE(tcode) (((tcode) & 2) != 0)
37#define TCODE_HAS_REQUEST_DATA(tcode) (((tcode) & 12) != 4)
38#define TCODE_HAS_RESPONSE_DATA(tcode) (((tcode) & 12) != 0)
39
40#define LOCAL_BUS 0xffc0
41
42#define SELFID_PORT_CHILD 0x3
43#define SELFID_PORT_PARENT 0x2
44#define SELFID_PORT_NCONN 0x1
45#define SELFID_PORT_NONE 0x0
46
47#define PHY_PACKET_CONFIG 0x0
48#define PHY_PACKET_LINK_ON 0x1
49#define PHY_PACKET_SELF_ID 0x2
50
51/* Bit fields _within_ the PHY registers. */
52#define PHY_LINK_ACTIVE 0x80
53#define PHY_CONTENDER 0x40
54#define PHY_BUS_RESET 0x40
55#define PHY_BUS_SHORT_RESET 0x40
56
57#define CSR_REGISTER_BASE 0xfffff0000000ULL
58
59/* register offsets relative to CSR_REGISTER_BASE */
60#define CSR_STATE_CLEAR 0x0
61#define CSR_STATE_SET 0x4
62#define CSR_NODE_IDS 0x8
63#define CSR_RESET_START 0xc
64#define CSR_SPLIT_TIMEOUT_HI 0x18
65#define CSR_SPLIT_TIMEOUT_LO 0x1c
66#define CSR_CYCLE_TIME 0x200
67#define CSR_BUS_TIME 0x204
68#define CSR_BUSY_TIMEOUT 0x210
69#define CSR_BUS_MANAGER_ID 0x21c
70#define CSR_BANDWIDTH_AVAILABLE 0x220
71#define CSR_CHANNELS_AVAILABLE 0x224
72#define CSR_CHANNELS_AVAILABLE_HI 0x224
73#define CSR_CHANNELS_AVAILABLE_LO 0x228
74#define CSR_BROADCAST_CHANNEL 0x234
75#define CSR_CONFIG_ROM 0x400
76#define CSR_CONFIG_ROM_END 0x800
77#define CSR_FCP_COMMAND 0xB00
78#define CSR_FCP_RESPONSE 0xD00
79#define CSR_FCP_END 0xF00
80#define CSR_TOPOLOGY_MAP 0x1000
81#define CSR_TOPOLOGY_MAP_END 0x1400
82#define CSR_SPEED_MAP 0x2000
83#define CSR_SPEED_MAP_END 0x3000
84
85#define BANDWIDTH_AVAILABLE_INITIAL 4915
86#define BROADCAST_CHANNEL_INITIAL (1 << 31 | 31)
87#define BROADCAST_CHANNEL_VALID (1 << 30)
88
89#define fw_notify(s, args...) printk(KERN_NOTICE KBUILD_MODNAME ": " s, ## args)
90#define fw_error(s, args...) printk(KERN_ERR KBUILD_MODNAME ": " s, ## args)
91
92static inline void fw_memcpy_from_be32(void *_dst, void *_src, size_t size)
93{
94 u32 *dst = _dst;
95 __be32 *src = _src;
96 int i;
97
98 for (i = 0; i < size / 4; i++)
99 dst[i] = be32_to_cpu(src[i]);
100}
101
102static inline void fw_memcpy_to_be32(void *_dst, void *_src, size_t size)
103{
104 fw_memcpy_from_be32(_dst, _src, size);
105}
106
107struct fw_card;
108struct fw_packet;
109struct fw_node;
110struct fw_request;
111
112struct fw_descriptor {
113 struct list_head link;
114 size_t length;
115 u32 immediate;
116 u32 key;
117 const u32 *data;
118};
119
120int fw_core_add_descriptor(struct fw_descriptor *desc);
121void fw_core_remove_descriptor(struct fw_descriptor *desc);
122
123typedef void (*fw_packet_callback_t)(struct fw_packet *packet,
124 struct fw_card *card, int status);
125
126typedef void (*fw_transaction_callback_t)(struct fw_card *card, int rcode,
127 void *data, size_t length,
128 void *callback_data);
129
130/*
131 * Important note: The callback must guarantee that either fw_send_response()
132 * or kfree() is called on the @request.
133 */
134typedef void (*fw_address_callback_t)(struct fw_card *card,
135 struct fw_request *request,
136 int tcode, int destination, int source,
137 int generation, int speed,
138 unsigned long long offset,
139 void *data, size_t length,
140 void *callback_data);
141
142struct fw_packet {
143 int speed;
144 int generation;
145 u32 header[4];
146 size_t header_length;
147 void *payload;
148 size_t payload_length;
149 dma_addr_t payload_bus;
150 u32 timestamp;
151
152 /*
153 * This callback is called when the packet transmission has
154 * completed; for successful transmission, the status code is
155 * the ack received from the destination, otherwise it's a
156 * negative errno: ENOMEM, ESTALE, ETIMEDOUT, ENODEV, EIO.
157 * The callback can be called from tasklet context and thus
158 * must never block.
159 */
160 fw_packet_callback_t callback;
161 int ack;
162 struct list_head link;
163 void *driver_data;
164};
165
166struct fw_transaction {
167 int node_id; /* The generation is implied; it is always the current. */
168 int tlabel;
169 int timestamp;
170 struct list_head link;
171
172 struct fw_packet packet;
173
174 /*
175 * The data passed to the callback is valid only during the
176 * callback.
177 */
178 fw_transaction_callback_t callback;
179 void *callback_data;
180};
181
182struct fw_address_handler {
183 u64 offset;
184 size_t length;
185 fw_address_callback_t address_callback;
186 void *callback_data;
187 struct list_head link;
188};
189
190struct fw_address_region {
191 u64 start;
192 u64 end;
193};
194
195extern const struct fw_address_region fw_high_memory_region;
196
197int fw_core_add_address_handler(struct fw_address_handler *handler,
198 const struct fw_address_region *region);
199void fw_core_remove_address_handler(struct fw_address_handler *handler);
200void fw_fill_response(struct fw_packet *response, u32 *request_header,
201 int rcode, void *payload, size_t length);
202void fw_send_response(struct fw_card *card,
203 struct fw_request *request, int rcode);
204
205extern struct bus_type fw_bus_type;
206
207struct fw_card {
208 const struct fw_card_driver *driver;
209 struct device *device;
210 struct kref kref;
211 struct completion done;
212
213 int node_id;
214 int generation;
215 int current_tlabel, tlabel_mask;
216 struct list_head transaction_list;
217 struct timer_list flush_timer;
218 unsigned long reset_jiffies;
219
220 unsigned long long guid;
221 unsigned max_receive;
222 int link_speed;
223 int config_rom_generation;
224
225 spinlock_t lock; /* Take this lock when handling the lists in
226 * this struct. */
227 struct fw_node *local_node;
228 struct fw_node *root_node;
229 struct fw_node *irm_node;
230 u8 color; /* must be u8 to match the definition in struct fw_node */
231 int gap_count;
232 bool beta_repeaters_present;
233
234 int index;
235
236 struct list_head link;
237
238 /* Work struct for BM duties. */
239 struct delayed_work work;
240 int bm_retries;
241 int bm_generation;
242
243 bool broadcast_channel_allocated;
244 u32 broadcast_channel;
245 u32 topology_map[(CSR_TOPOLOGY_MAP_END - CSR_TOPOLOGY_MAP) / 4];
246};
247
248static inline struct fw_card *fw_card_get(struct fw_card *card)
249{
250 kref_get(&card->kref);
251
252 return card;
253}
254
255void fw_card_release(struct kref *kref);
256
257static inline void fw_card_put(struct fw_card *card)
258{
259 kref_put(&card->kref, fw_card_release);
260}
261
262extern void fw_schedule_bm_work(struct fw_card *card, unsigned long delay);
263
264/*
265 * Check whether new_generation is the immediate successor of old_generation.
266 * Take counter roll-over at 255 (as per to OHCI) into account.
267 */
268static inline bool is_next_generation(int new_generation, int old_generation)
269{
270 return (new_generation & 0xff) == ((old_generation + 1) & 0xff);
271}
272
273/*
274 * The iso packet format allows for an immediate header/payload part
275 * stored in 'header' immediately after the packet info plus an
276 * indirect payload part that is pointer to by the 'payload' field.
277 * Applications can use one or the other or both to implement simple
278 * low-bandwidth streaming (e.g. audio) or more advanced
279 * scatter-gather streaming (e.g. assembling video frame automatically).
280 */
281
282struct fw_iso_packet {
283 u16 payload_length; /* Length of indirect payload. */
284 u32 interrupt : 1; /* Generate interrupt on this packet */
285 u32 skip : 1; /* Set to not send packet at all. */
286 u32 tag : 2;
287 u32 sy : 4;
288 u32 header_length : 8; /* Length of immediate header. */
289 u32 header[0];
290};
291
292#define FW_ISO_CONTEXT_TRANSMIT 0
293#define FW_ISO_CONTEXT_RECEIVE 1
294
295#define FW_ISO_CONTEXT_MATCH_TAG0 1
296#define FW_ISO_CONTEXT_MATCH_TAG1 2
297#define FW_ISO_CONTEXT_MATCH_TAG2 4
298#define FW_ISO_CONTEXT_MATCH_TAG3 8
299#define FW_ISO_CONTEXT_MATCH_ALL_TAGS 15
300
301struct fw_iso_context;
302
303typedef void (*fw_iso_callback_t)(struct fw_iso_context *context,
304 u32 cycle, size_t header_length,
305 void *header, void *data);
306
307/*
308 * An iso buffer is just a set of pages mapped for DMA in the
309 * specified direction. Since the pages are to be used for DMA, they
310 * are not mapped into the kernel virtual address space. We store the
311 * DMA address in the page private. The helper function
312 * fw_iso_buffer_map() will map the pages into a given vma.
313 */
314
315struct fw_iso_buffer {
316 enum dma_data_direction direction;
317 struct page **pages;
318 int page_count;
319};
320
321struct fw_iso_context {
322 struct fw_card *card;
323 int type;
324 int channel;
325 int speed;
326 size_t header_size;
327 fw_iso_callback_t callback;
328 void *callback_data;
329};
330
331int fw_iso_buffer_init(struct fw_iso_buffer *buffer, struct fw_card *card,
332 int page_count, enum dma_data_direction direction);
333int fw_iso_buffer_map(struct fw_iso_buffer *buffer, struct vm_area_struct *vma);
334void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer, struct fw_card *card);
335
336struct fw_iso_context *fw_iso_context_create(struct fw_card *card,
337 int type, int channel, int speed, size_t header_size,
338 fw_iso_callback_t callback, void *callback_data);
339int fw_iso_context_queue(struct fw_iso_context *ctx,
340 struct fw_iso_packet *packet,
341 struct fw_iso_buffer *buffer,
342 unsigned long payload);
343int fw_iso_context_start(struct fw_iso_context *ctx,
344 int cycle, int sync, int tags);
345int fw_iso_context_stop(struct fw_iso_context *ctx);
346void fw_iso_context_destroy(struct fw_iso_context *ctx);
347
348void fw_iso_resource_manage(struct fw_card *card, int generation,
349 u64 channels_mask, int *channel, int *bandwidth, bool allocate);
350
351struct fw_card_driver {
352 /*
353 * Enable the given card with the given initial config rom.
354 * This function is expected to activate the card, and either
355 * enable the PHY or set the link_on bit and initiate a bus
356 * reset.
357 */
358 int (*enable)(struct fw_card *card, u32 *config_rom, size_t length);
359
360 int (*update_phy_reg)(struct fw_card *card, int address,
361 int clear_bits, int set_bits);
362
363 /*
364 * Update the config rom for an enabled card. This function
365 * should change the config rom that is presented on the bus
366 * an initiate a bus reset.
367 */
368 int (*set_config_rom)(struct fw_card *card,
369 u32 *config_rom, size_t length);
370
371 void (*send_request)(struct fw_card *card, struct fw_packet *packet);
372 void (*send_response)(struct fw_card *card, struct fw_packet *packet);
373 /* Calling cancel is valid once a packet has been submitted. */
374 int (*cancel_packet)(struct fw_card *card, struct fw_packet *packet);
375
376 /*
377 * Allow the specified node ID to do direct DMA out and in of
378 * host memory. The card will disable this for all node when
379 * a bus reset happens, so driver need to reenable this after
380 * bus reset. Returns 0 on success, -ENODEV if the card
381 * doesn't support this, -ESTALE if the generation doesn't
382 * match.
383 */
384 int (*enable_phys_dma)(struct fw_card *card,
385 int node_id, int generation);
386
387 u64 (*get_bus_time)(struct fw_card *card);
388
389 struct fw_iso_context *
390 (*allocate_iso_context)(struct fw_card *card,
391 int type, int channel, size_t header_size);
392 void (*free_iso_context)(struct fw_iso_context *ctx);
393
394 int (*start_iso)(struct fw_iso_context *ctx,
395 s32 cycle, u32 sync, u32 tags);
396
397 int (*queue_iso)(struct fw_iso_context *ctx,
398 struct fw_iso_packet *packet,
399 struct fw_iso_buffer *buffer,
400 unsigned long payload);
401
402 int (*stop_iso)(struct fw_iso_context *ctx);
403};
404
405int fw_core_initiate_bus_reset(struct fw_card *card, int short_reset);
406
407void fw_send_request(struct fw_card *card, struct fw_transaction *t,
408 int tcode, int destination_id, int generation, int speed,
409 unsigned long long offset, void *payload, size_t length,
410 fw_transaction_callback_t callback, void *callback_data);
411int fw_cancel_transaction(struct fw_card *card,
412 struct fw_transaction *transaction);
413void fw_flush_transactions(struct fw_card *card);
414int fw_run_transaction(struct fw_card *card, int tcode, int destination_id,
415 int generation, int speed, unsigned long long offset,
416 void *payload, size_t length);
417void fw_send_phy_config(struct fw_card *card,
418 int node_id, int generation, int gap_count);
419
420static inline int fw_stream_packet_destination_id(int tag, int channel, int sy)
421{
422 return tag << 14 | channel << 8 | sy;
423}
424
425/*
426 * Called by the topology code to inform the device code of node
427 * activity; found, lost, or updated nodes.
428 */
429void fw_node_event(struct fw_card *card, struct fw_node *node, int event);
430
431/* API used by card level drivers */
432
433void fw_card_initialize(struct fw_card *card,
434 const struct fw_card_driver *driver, struct device *device);
435int fw_card_add(struct fw_card *card,
436 u32 max_receive, u32 link_speed, u64 guid);
437void fw_core_remove_card(struct fw_card *card);
438void fw_core_handle_bus_reset(struct fw_card *card, int node_id,
439 int generation, int self_id_count, u32 *self_ids);
440void fw_core_handle_request(struct fw_card *card, struct fw_packet *request);
441void fw_core_handle_response(struct fw_card *card, struct fw_packet *packet);
442
443extern int fw_irm_set_broadcast_channel_register(struct device *dev,
444 void *data);
445
446#endif /* __fw_transaction_h */
diff --git a/drivers/firewire/fw-ohci.h b/drivers/firewire/ohci.h
index a2fbb6240ca7..ba492d85c516 100644
--- a/drivers/firewire/fw-ohci.h
+++ b/drivers/firewire/ohci.h
@@ -1,5 +1,5 @@
1#ifndef __fw_ohci_h 1#ifndef _FIREWIRE_OHCI_H
2#define __fw_ohci_h 2#define _FIREWIRE_OHCI_H
3 3
4/* OHCI register map */ 4/* OHCI register map */
5 5
@@ -154,4 +154,4 @@
154 154
155#define OHCI1394_phy_tcode 0xe 155#define OHCI1394_phy_tcode 0xe
156 156
157#endif /* __fw_ohci_h */ 157#endif /* _FIREWIRE_OHCI_H */
diff --git a/include/linux/firewire.h b/include/linux/firewire.h
new file mode 100644
index 000000000000..e979f9b22cb6
--- /dev/null
+++ b/include/linux/firewire.h
@@ -0,0 +1,350 @@
1#ifndef _LINUX_FIREWIRE_H
2#define _LINUX_FIREWIRE_H
3
4#include <linux/completion.h>
5#include <linux/device.h>
6#include <linux/kernel.h>
7#include <linux/kref.h>
8#include <linux/list.h>
9#include <linux/mutex.h>
10#include <linux/spinlock.h>
11#include <linux/sysfs.h>
12#include <linux/timer.h>
13#include <linux/types.h>
14#include <linux/workqueue.h>
15
16#include <asm/atomic.h>
17#include <asm/byteorder.h>
18
19#define fw_notify(s, args...) printk(KERN_NOTICE KBUILD_MODNAME ": " s, ## args)
20#define fw_error(s, args...) printk(KERN_ERR KBUILD_MODNAME ": " s, ## args)
21
22static inline void fw_memcpy_from_be32(void *_dst, void *_src, size_t size)
23{
24 u32 *dst = _dst;
25 __be32 *src = _src;
26 int i;
27
28 for (i = 0; i < size / 4; i++)
29 dst[i] = be32_to_cpu(src[i]);
30}
31
32static inline void fw_memcpy_to_be32(void *_dst, void *_src, size_t size)
33{
34 fw_memcpy_from_be32(_dst, _src, size);
35}
36#define CSR_REGISTER_BASE 0xfffff0000000ULL
37
38/* register offsets are relative to CSR_REGISTER_BASE */
39#define CSR_STATE_CLEAR 0x0
40#define CSR_STATE_SET 0x4
41#define CSR_NODE_IDS 0x8
42#define CSR_RESET_START 0xc
43#define CSR_SPLIT_TIMEOUT_HI 0x18
44#define CSR_SPLIT_TIMEOUT_LO 0x1c
45#define CSR_CYCLE_TIME 0x200
46#define CSR_BUS_TIME 0x204
47#define CSR_BUSY_TIMEOUT 0x210
48#define CSR_BUS_MANAGER_ID 0x21c
49#define CSR_BANDWIDTH_AVAILABLE 0x220
50#define CSR_CHANNELS_AVAILABLE 0x224
51#define CSR_CHANNELS_AVAILABLE_HI 0x224
52#define CSR_CHANNELS_AVAILABLE_LO 0x228
53#define CSR_BROADCAST_CHANNEL 0x234
54#define CSR_CONFIG_ROM 0x400
55#define CSR_CONFIG_ROM_END 0x800
56#define CSR_FCP_COMMAND 0xB00
57#define CSR_FCP_RESPONSE 0xD00
58#define CSR_FCP_END 0xF00
59#define CSR_TOPOLOGY_MAP 0x1000
60#define CSR_TOPOLOGY_MAP_END 0x1400
61#define CSR_SPEED_MAP 0x2000
62#define CSR_SPEED_MAP_END 0x3000
63
64#define CSR_OFFSET 0x40
65#define CSR_LEAF 0x80
66#define CSR_DIRECTORY 0xc0
67
68#define CSR_DESCRIPTOR 0x01
69#define CSR_VENDOR 0x03
70#define CSR_HARDWARE_VERSION 0x04
71#define CSR_NODE_CAPABILITIES 0x0c
72#define CSR_UNIT 0x11
73#define CSR_SPECIFIER_ID 0x12
74#define CSR_VERSION 0x13
75#define CSR_DEPENDENT_INFO 0x14
76#define CSR_MODEL 0x17
77#define CSR_INSTANCE 0x18
78#define CSR_DIRECTORY_ID 0x20
79
80struct fw_csr_iterator {
81 u32 *p;
82 u32 *end;
83};
84
85void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 *p);
86int fw_csr_iterator_next(struct fw_csr_iterator *ci, int *key, int *value);
87
88extern struct bus_type fw_bus_type;
89
90struct fw_card_driver;
91struct fw_node;
92
93struct fw_card {
94 const struct fw_card_driver *driver;
95 struct device *device;
96 struct kref kref;
97 struct completion done;
98
99 int node_id;
100 int generation;
101 int current_tlabel, tlabel_mask;
102 struct list_head transaction_list;
103 struct timer_list flush_timer;
104 unsigned long reset_jiffies;
105
106 unsigned long long guid;
107 unsigned max_receive;
108 int link_speed;
109 int config_rom_generation;
110
111 spinlock_t lock; /* Take this lock when handling the lists in
112 * this struct. */
113 struct fw_node *local_node;
114 struct fw_node *root_node;
115 struct fw_node *irm_node;
116 u8 color; /* must be u8 to match the definition in struct fw_node */
117 int gap_count;
118 bool beta_repeaters_present;
119
120 int index;
121
122 struct list_head link;
123
124 /* Work struct for BM duties. */
125 struct delayed_work work;
126 int bm_retries;
127 int bm_generation;
128
129 bool broadcast_channel_allocated;
130 u32 broadcast_channel;
131 u32 topology_map[(CSR_TOPOLOGY_MAP_END - CSR_TOPOLOGY_MAP) / 4];
132};
133
134static inline struct fw_card *fw_card_get(struct fw_card *card)
135{
136 kref_get(&card->kref);
137
138 return card;
139}
140
141void fw_card_release(struct kref *kref);
142
143static inline void fw_card_put(struct fw_card *card)
144{
145 kref_put(&card->kref, fw_card_release);
146}
147
148struct fw_attribute_group {
149 struct attribute_group *groups[2];
150 struct attribute_group group;
151 struct attribute *attrs[12];
152};
153
154enum fw_device_state {
155 FW_DEVICE_INITIALIZING,
156 FW_DEVICE_RUNNING,
157 FW_DEVICE_GONE,
158 FW_DEVICE_SHUTDOWN,
159};
160
161/*
162 * Note, fw_device.generation always has to be read before fw_device.node_id.
163 * Use SMP memory barriers to ensure this. Otherwise requests will be sent
164 * to an outdated node_id if the generation was updated in the meantime due
165 * to a bus reset.
166 *
167 * Likewise, fw-core will take care to update .node_id before .generation so
168 * that whenever fw_device.generation is current WRT the actual bus generation,
169 * fw_device.node_id is guaranteed to be current too.
170 *
171 * The same applies to fw_device.card->node_id vs. fw_device.generation.
172 *
173 * fw_device.config_rom and fw_device.config_rom_length may be accessed during
174 * the lifetime of any fw_unit belonging to the fw_device, before device_del()
175 * was called on the last fw_unit. Alternatively, they may be accessed while
176 * holding fw_device_rwsem.
177 */
178struct fw_device {
179 atomic_t state;
180 struct fw_node *node;
181 int node_id;
182 int generation;
183 unsigned max_speed;
184 struct fw_card *card;
185 struct device device;
186
187 struct mutex client_list_mutex;
188 struct list_head client_list;
189
190 u32 *config_rom;
191 size_t config_rom_length;
192 int config_rom_retries;
193 unsigned is_local:1;
194 unsigned cmc:1;
195 unsigned bc_implemented:2;
196
197 struct delayed_work work;
198 struct fw_attribute_group attribute_group;
199};
200
201static inline struct fw_device *fw_device(struct device *dev)
202{
203 return container_of(dev, struct fw_device, device);
204}
205
206static inline int fw_device_is_shutdown(struct fw_device *device)
207{
208 return atomic_read(&device->state) == FW_DEVICE_SHUTDOWN;
209}
210
211static inline struct fw_device *fw_device_get(struct fw_device *device)
212{
213 get_device(&device->device);
214
215 return device;
216}
217
218static inline void fw_device_put(struct fw_device *device)
219{
220 put_device(&device->device);
221}
222
223int fw_device_enable_phys_dma(struct fw_device *device);
224
225/*
226 * fw_unit.directory must not be accessed after device_del(&fw_unit.device).
227 */
228struct fw_unit {
229 struct device device;
230 u32 *directory;
231 struct fw_attribute_group attribute_group;
232};
233
234static inline struct fw_unit *fw_unit(struct device *dev)
235{
236 return container_of(dev, struct fw_unit, device);
237}
238
239static inline struct fw_unit *fw_unit_get(struct fw_unit *unit)
240{
241 get_device(&unit->device);
242
243 return unit;
244}
245
246static inline void fw_unit_put(struct fw_unit *unit)
247{
248 put_device(&unit->device);
249}
250
251struct ieee1394_device_id;
252
253struct fw_driver {
254 struct device_driver driver;
255 /* Called when the parent device sits through a bus reset. */
256 void (*update)(struct fw_unit *unit);
257 const struct ieee1394_device_id *id_table;
258};
259
260struct fw_packet;
261struct fw_request;
262
263typedef void (*fw_packet_callback_t)(struct fw_packet *packet,
264 struct fw_card *card, int status);
265typedef void (*fw_transaction_callback_t)(struct fw_card *card, int rcode,
266 void *data, size_t length,
267 void *callback_data);
268/*
269 * Important note: The callback must guarantee that either fw_send_response()
270 * or kfree() is called on the @request.
271 */
272typedef void (*fw_address_callback_t)(struct fw_card *card,
273 struct fw_request *request,
274 int tcode, int destination, int source,
275 int generation, int speed,
276 unsigned long long offset,
277 void *data, size_t length,
278 void *callback_data);
279
280struct fw_packet {
281 int speed;
282 int generation;
283 u32 header[4];
284 size_t header_length;
285 void *payload;
286 size_t payload_length;
287 dma_addr_t payload_bus;
288 u32 timestamp;
289
290 /*
291 * This callback is called when the packet transmission has
292 * completed; for successful transmission, the status code is
293 * the ack received from the destination, otherwise it's a
294 * negative errno: ENOMEM, ESTALE, ETIMEDOUT, ENODEV, EIO.
295 * The callback can be called from tasklet context and thus
296 * must never block.
297 */
298 fw_packet_callback_t callback;
299 int ack;
300 struct list_head link;
301 void *driver_data;
302};
303
304struct fw_transaction {
305 int node_id; /* The generation is implied; it is always the current. */
306 int tlabel;
307 int timestamp;
308 struct list_head link;
309
310 struct fw_packet packet;
311
312 /*
313 * The data passed to the callback is valid only during the
314 * callback.
315 */
316 fw_transaction_callback_t callback;
317 void *callback_data;
318};
319
320struct fw_address_handler {
321 u64 offset;
322 size_t length;
323 fw_address_callback_t address_callback;
324 void *callback_data;
325 struct list_head link;
326};
327
328struct fw_address_region {
329 u64 start;
330 u64 end;
331};
332
333extern const struct fw_address_region fw_high_memory_region;
334
335int fw_core_add_address_handler(struct fw_address_handler *handler,
336 const struct fw_address_region *region);
337void fw_core_remove_address_handler(struct fw_address_handler *handler);
338void fw_send_response(struct fw_card *card,
339 struct fw_request *request, int rcode);
340void fw_send_request(struct fw_card *card, struct fw_transaction *t,
341 int tcode, int destination_id, int generation, int speed,
342 unsigned long long offset, void *payload, size_t length,
343 fw_transaction_callback_t callback, void *callback_data);
344int fw_cancel_transaction(struct fw_card *card,
345 struct fw_transaction *transaction);
346int fw_run_transaction(struct fw_card *card, int tcode, int destination_id,
347 int generation, int speed, unsigned long long offset,
348 void *payload, size_t length);
349
350#endif /* _LINUX_FIREWIRE_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-27 21:30:30 -0500