2 * FireDTV driver (formerly known as FireSAT)
4 * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
5 * Copyright (C) 2007-2008 Ben Backx <ben@bbackx.com>
6 * Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
14 #include <linux/device.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
17 #include <linux/list.h>
18 #include <linux/spinlock.h>
19 #include <linux/types.h>
23 #include <highlevel.h>
31 static LIST_HEAD(node_list);
32 static DEFINE_SPINLOCK(node_list_lock);
34 #define FIREWIRE_HEADER_SIZE 4
35 #define CIP_HEADER_SIZE 8
37 static void rawiso_activity_cb(struct hpsb_iso *iso)
39 struct firedtv *f, *fdtv = NULL;
40 unsigned int i, num, packet;
45 spin_lock_irqsave(&node_list_lock, flags);
46 list_for_each_entry(f, &node_list, list)
47 if (f->backend_data == iso) {
51 spin_unlock_irqrestore(&node_list_lock, flags);
53 packet = iso->first_packet;
54 num = hpsb_iso_n_ready(iso);
57 dev_err(fdtv->device, "received at unknown iso channel\n");
61 for (i = 0; i < num; i++, packet = (packet + 1) % iso->buf_packets) {
62 buf = dma_region_i(&iso->data_buf, unsigned char,
63 iso->infos[packet].offset + CIP_HEADER_SIZE);
64 count = (iso->infos[packet].len - CIP_HEADER_SIZE) /
65 (188 + FIREWIRE_HEADER_SIZE);
67 /* ignore empty packet */
68 if (iso->infos[packet].len <= CIP_HEADER_SIZE)
72 if (buf[FIREWIRE_HEADER_SIZE] == 0x47)
73 dvb_dmx_swfilter_packets(&fdtv->demux,
74 &buf[FIREWIRE_HEADER_SIZE], 1);
77 "skipping invalid packet\n");
78 buf += 188 + FIREWIRE_HEADER_SIZE;
82 hpsb_iso_recv_release_packets(iso, num);
85 static inline struct node_entry *node_of(struct firedtv *fdtv)
87 return container_of(fdtv->device, struct unit_directory, device)->ne;
90 static int node_lock(struct firedtv *fdtv, u64 addr, __be32 data[])
94 ret = hpsb_node_lock(node_of(fdtv), addr, EXTCODE_COMPARE_SWAP,
95 (__force quadlet_t *)&data[1], (__force quadlet_t)data[0]);
101 static int node_read(struct firedtv *fdtv, u64 addr, void *data, size_t len)
103 return hpsb_node_read(node_of(fdtv), addr, data, len);
106 static int node_write(struct firedtv *fdtv, u64 addr, void *data, size_t len)
108 return hpsb_node_write(node_of(fdtv), addr, data, len);
111 #define FDTV_ISO_BUFFER_PACKETS 256
112 #define FDTV_ISO_BUFFER_SIZE (FDTV_ISO_BUFFER_PACKETS * 200)
114 static int start_iso(struct firedtv *fdtv)
116 struct hpsb_iso *iso_handle;
119 iso_handle = hpsb_iso_recv_init(node_of(fdtv)->host,
120 FDTV_ISO_BUFFER_SIZE, FDTV_ISO_BUFFER_PACKETS,
121 fdtv->isochannel, HPSB_ISO_DMA_DEFAULT,
122 -1, /* stat.config.irq_interval */
124 if (iso_handle == NULL) {
125 dev_err(fdtv->device, "cannot initialize iso receive\n");
128 fdtv->backend_data = iso_handle;
130 ret = hpsb_iso_recv_start(iso_handle, -1, -1, 0);
132 dev_err(fdtv->device, "cannot start iso receive\n");
133 hpsb_iso_shutdown(iso_handle);
134 fdtv->backend_data = NULL;
139 static void stop_iso(struct firedtv *fdtv)
141 struct hpsb_iso *iso_handle = fdtv->backend_data;
143 if (iso_handle != NULL) {
144 hpsb_iso_stop(iso_handle);
145 hpsb_iso_shutdown(iso_handle);
147 fdtv->backend_data = NULL;
150 static const struct firedtv_backend fdtv_1394_backend = {
154 .start_iso = start_iso,
155 .stop_iso = stop_iso,
158 static void fcp_request(struct hpsb_host *host, int nodeid, int direction,
159 int cts, u8 *data, size_t length)
161 struct firedtv *f, *fdtv = NULL;
165 if (length == 0 || (data[0] & 0xf0) != 0)
170 spin_lock_irqsave(&node_list_lock, flags);
171 list_for_each_entry(f, &node_list, list)
172 if (node_of(f)->host == host &&
173 node_of(f)->nodeid == nodeid &&
174 (f->subunit == su || (f->subunit == 0 && su == 0x7))) {
178 spin_unlock_irqrestore(&node_list_lock, flags);
181 avc_recv(fdtv, data, length);
184 static int node_probe(struct device *dev)
186 struct unit_directory *ud =
187 container_of(dev, struct unit_directory, device);
188 struct firedtv *fdtv;
192 kv_len = (ud->model_name_kv->value.leaf.len - 2) * sizeof(quadlet_t);
193 kv_str = CSR1212_TEXTUAL_DESCRIPTOR_LEAF_DATA(ud->model_name_kv);
195 fdtv = fdtv_alloc(dev, &fdtv_1394_backend, kv_str, kv_len);
200 * Work around a bug in udev's path_id script: Use the fw-host's dev
201 * instead of the unit directory's dev as parent of the input device.
203 err = fdtv_register_rc(fdtv, dev->parent->parent);
207 spin_lock_irq(&node_list_lock);
208 list_add_tail(&fdtv->list, &node_list);
209 spin_unlock_irq(&node_list_lock);
211 err = avc_identify_subunit(fdtv);
215 err = fdtv_dvb_register(fdtv);
219 avc_register_remote_control(fdtv);
223 spin_lock_irq(&node_list_lock);
224 list_del(&fdtv->list);
225 spin_unlock_irq(&node_list_lock);
226 fdtv_unregister_rc(fdtv);
233 static int node_remove(struct device *dev)
235 struct firedtv *fdtv = dev_get_drvdata(dev);
237 fdtv_dvb_unregister(fdtv);
239 spin_lock_irq(&node_list_lock);
240 list_del(&fdtv->list);
241 spin_unlock_irq(&node_list_lock);
243 fdtv_unregister_rc(fdtv);
249 static int node_update(struct unit_directory *ud)
251 struct firedtv *fdtv = dev_get_drvdata(&ud->device);
253 if (fdtv->isochannel >= 0)
254 cmp_establish_pp_connection(fdtv, fdtv->subunit,
259 static struct hpsb_protocol_driver fdtv_driver = {
261 .update = node_update,
264 .remove = node_remove,
268 static struct hpsb_highlevel fdtv_highlevel = {
270 .fcp_request = fcp_request,
273 int __init fdtv_1394_init(struct ieee1394_device_id id_table[])
277 hpsb_register_highlevel(&fdtv_highlevel);
278 fdtv_driver.id_table = id_table;
279 ret = hpsb_register_protocol(&fdtv_driver);
281 printk(KERN_ERR "firedtv: failed to register protocol\n");
282 hpsb_unregister_highlevel(&fdtv_highlevel);
287 void __exit fdtv_1394_exit(void)
289 hpsb_unregister_protocol(&fdtv_driver);
290 hpsb_unregister_highlevel(&fdtv_highlevel);