aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/ivtv/ivtv-firmware.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/ivtv/ivtv-firmware.c')
-rw-r--r--drivers/media/video/ivtv/ivtv-firmware.c272
1 files changed, 272 insertions, 0 deletions
diff --git a/drivers/media/video/ivtv/ivtv-firmware.c b/drivers/media/video/ivtv/ivtv-firmware.c
new file mode 100644
index 000000000000..d4c910b782af
--- /dev/null
+++ b/drivers/media/video/ivtv/ivtv-firmware.c
@@ -0,0 +1,272 @@
1/*
2 ivtv firmware functions.
3 Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
4 Copyright (C) 2004 Chris Kennedy <c@groovy.org>
5 Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
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; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#include "ivtv-driver.h"
23#include "ivtv-mailbox.h"
24#include "ivtv-firmware.h"
25#include <linux/firmware.h>
26
27#define IVTV_MASK_SPU_ENABLE 0xFFFFFFFE
28#define IVTV_MASK_VPU_ENABLE15 0xFFFFFFF6
29#define IVTV_MASK_VPU_ENABLE16 0xFFFFFFFB
30#define IVTV_CMD_VDM_STOP 0x00000000
31#define IVTV_CMD_AO_STOP 0x00000005
32#define IVTV_CMD_APU_PING 0x00000000
33#define IVTV_CMD_VPU_STOP15 0xFFFFFFFE
34#define IVTV_CMD_VPU_STOP16 0xFFFFFFEE
35#define IVTV_CMD_HW_BLOCKS_RST 0xFFFFFFFF
36#define IVTV_CMD_SPU_STOP 0x00000001
37#define IVTV_CMD_SDRAM_PRECHARGE_INIT 0x0000001A
38#define IVTV_CMD_SDRAM_REFRESH_INIT 0x80000640
39#define IVTV_SDRAM_SLEEPTIME (60 * HZ / 100) /* 600 ms */
40
41#define IVTV_DECODE_INIT_MPEG_FILENAME "v4l-cx2341x-init.mpg"
42#define IVTV_DECODE_INIT_MPEG_SIZE (152*1024)
43
44/* Encoder/decoder firmware sizes */
45#define IVTV_FW_ENC_SIZE (376836)
46#define IVTV_FW_DEC_SIZE (256*1024)
47
48static int load_fw_direct(const char *fn, volatile u8 __iomem *mem, struct ivtv *itv, long size)
49{
50 const struct firmware *fw = NULL;
51 int retries = 3;
52
53retry:
54 if (retries && request_firmware(&fw, fn, &itv->dev->dev) == 0) {
55 int i;
56 volatile u32 __iomem *dst = (volatile u32 __iomem *)mem;
57 const u32 *src = (const u32 *)fw->data;
58
59 /* temporarily allow 256 KB encoding firmwares as well for
60 compatibility with blackbird cards */
61 if (fw->size != size && fw->size != 256 * 1024) {
62 /* Due to race conditions in firmware loading (esp. with udev <0.95)
63 the wrong file was sometimes loaded. So we check filesizes to
64 see if at least the right-sized file was loaded. If not, then we
65 retry. */
66 IVTV_INFO("retry: file loaded was not %s (expected size %ld, got %zd)\n", fn, size, fw->size);
67 release_firmware(fw);
68 retries--;
69 goto retry;
70 }
71 for (i = 0; i < fw->size; i += 4) {
72 /* no need for endianness conversion on the ppc */
73 __raw_writel(*src, dst);
74 dst++;
75 src++;
76 }
77 release_firmware(fw);
78 IVTV_INFO("loaded %s firmware (%zd bytes)\n", fn, fw->size);
79 return size;
80 }
81 IVTV_ERR("unable to open firmware %s (must be %ld bytes)\n", fn, size);
82 IVTV_ERR("did you put the firmware in the hotplug firmware directory?\n");
83 return -ENOMEM;
84}
85
86void ivtv_halt_firmware(struct ivtv *itv)
87{
88 IVTV_DEBUG_INFO("Preparing for firmware halt.\n");
89 if (itv->has_cx23415 && itv->dec_mbox.mbox)
90 ivtv_vapi(itv, CX2341X_DEC_HALT_FW, 0);
91 if (itv->enc_mbox.mbox)
92 ivtv_vapi(itv, CX2341X_ENC_HALT_FW, 0);
93
94 ivtv_sleep_timeout(HZ / 100, 0);
95 itv->enc_mbox.mbox = itv->dec_mbox.mbox = NULL;
96
97 IVTV_DEBUG_INFO("Stopping VDM\n");
98 write_reg(IVTV_CMD_VDM_STOP, IVTV_REG_VDM);
99
100 IVTV_DEBUG_INFO("Stopping AO\n");
101 write_reg(IVTV_CMD_AO_STOP, IVTV_REG_AO);
102
103 IVTV_DEBUG_INFO("pinging (?) APU\n");
104 write_reg(IVTV_CMD_APU_PING, IVTV_REG_APU);
105
106 IVTV_DEBUG_INFO("Stopping VPU\n");
107 if (!itv->has_cx23415)
108 write_reg(IVTV_CMD_VPU_STOP16, IVTV_REG_VPU);
109 else
110 write_reg(IVTV_CMD_VPU_STOP15, IVTV_REG_VPU);
111
112 IVTV_DEBUG_INFO("Resetting Hw Blocks\n");
113 write_reg(IVTV_CMD_HW_BLOCKS_RST, IVTV_REG_HW_BLOCKS);
114
115 IVTV_DEBUG_INFO("Stopping SPU\n");
116 write_reg(IVTV_CMD_SPU_STOP, IVTV_REG_SPU);
117
118 ivtv_sleep_timeout(HZ / 100, 0);
119
120 IVTV_DEBUG_INFO("init Encoder SDRAM pre-charge\n");
121 write_reg(IVTV_CMD_SDRAM_PRECHARGE_INIT, IVTV_REG_ENC_SDRAM_PRECHARGE);
122
123 IVTV_DEBUG_INFO("init Encoder SDRAM refresh to 1us\n");
124 write_reg(IVTV_CMD_SDRAM_REFRESH_INIT, IVTV_REG_ENC_SDRAM_REFRESH);
125
126 if (itv->has_cx23415) {
127 IVTV_DEBUG_INFO("init Decoder SDRAM pre-charge\n");
128 write_reg(IVTV_CMD_SDRAM_PRECHARGE_INIT, IVTV_REG_DEC_SDRAM_PRECHARGE);
129
130 IVTV_DEBUG_INFO("init Decoder SDRAM refresh to 1us\n");
131 write_reg(IVTV_CMD_SDRAM_REFRESH_INIT, IVTV_REG_DEC_SDRAM_REFRESH);
132 }
133
134 IVTV_DEBUG_INFO("Sleeping for %dms (600 recommended)\n",
135 (int)(IVTV_SDRAM_SLEEPTIME * 1000 / HZ));
136 ivtv_sleep_timeout(IVTV_SDRAM_SLEEPTIME, 0);
137}
138
139void ivtv_firmware_versions(struct ivtv *itv)
140{
141 u32 data[CX2341X_MBOX_MAX_DATA];
142
143 /* Encoder */
144 ivtv_vapi_result(itv, data, CX2341X_ENC_GET_VERSION, 0);
145 IVTV_INFO("Encoder revision: 0x%08x\n", data[0]);
146
147 if (data[0] != 0x02060039)
148 IVTV_WARN("Recommended firmware version is 0x02060039.\n");
149
150 if (itv->has_cx23415) {
151 /* Decoder */
152 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_VERSION, 0);
153 IVTV_INFO("Decoder revision: 0x%08x\n", data[0]);
154 }
155}
156
157static int ivtv_firmware_copy(struct ivtv *itv)
158{
159 IVTV_DEBUG_INFO("Loading encoder image\n");
160 if (load_fw_direct(CX2341X_FIRM_ENC_FILENAME,
161 itv->enc_mem, itv, IVTV_FW_ENC_SIZE) != IVTV_FW_ENC_SIZE) {
162 IVTV_DEBUG_WARN("failed loading encoder firmware\n");
163 return -3;
164 }
165 if (!itv->has_cx23415)
166 return 0;
167
168 IVTV_DEBUG_INFO("Loading decoder image\n");
169 if (load_fw_direct(CX2341X_FIRM_DEC_FILENAME,
170 itv->dec_mem, itv, IVTV_FW_DEC_SIZE) != IVTV_FW_DEC_SIZE) {
171 IVTV_DEBUG_WARN("failed loading decoder firmware\n");
172 return -1;
173 }
174 return 0;
175}
176
177static volatile struct ivtv_mailbox __iomem *ivtv_search_mailbox(const volatile u8 __iomem *mem, u32 size)
178{
179 int i;
180
181 /* mailbox is preceeded by a 16 byte 'magic cookie' starting at a 256-byte
182 address boundary */
183 for (i = 0; i < size; i += 0x100) {
184 if (readl(mem + i) == 0x12345678 &&
185 readl(mem + i + 4) == 0x34567812 &&
186 readl(mem + i + 8) == 0x56781234 &&
187 readl(mem + i + 12) == 0x78123456) {
188 return (volatile struct ivtv_mailbox __iomem *)(mem + i + 16);
189 }
190 }
191 return NULL;
192}
193
194int ivtv_firmware_init(struct ivtv *itv)
195{
196 int err;
197
198 ivtv_halt_firmware(itv);
199
200 /* load firmware */
201 err = ivtv_firmware_copy(itv);
202 if (err) {
203 IVTV_DEBUG_WARN("Error %d loading firmware\n", err);
204 return err;
205 }
206
207 /* start firmware */
208 write_reg(read_reg(IVTV_REG_SPU) & IVTV_MASK_SPU_ENABLE, IVTV_REG_SPU);
209 ivtv_sleep_timeout(HZ / 10, 0);
210 if (itv->has_cx23415)
211 write_reg(read_reg(IVTV_REG_VPU) & IVTV_MASK_VPU_ENABLE15, IVTV_REG_VPU);
212 else
213 write_reg(read_reg(IVTV_REG_VPU) & IVTV_MASK_VPU_ENABLE16, IVTV_REG_VPU);
214 ivtv_sleep_timeout(HZ / 10, 0);
215
216 /* find mailboxes and ping firmware */
217 itv->enc_mbox.mbox = ivtv_search_mailbox(itv->enc_mem, IVTV_ENCODER_SIZE);
218 if (itv->enc_mbox.mbox == NULL)
219 IVTV_ERR("Encoder mailbox not found\n");
220 else if (ivtv_vapi(itv, CX2341X_ENC_PING_FW, 0)) {
221 IVTV_ERR("Encoder firmware dead!\n");
222 itv->enc_mbox.mbox = NULL;
223 }
224 if (itv->enc_mbox.mbox == NULL)
225 return -ENODEV;
226
227 if (!itv->has_cx23415)
228 return 0;
229
230 itv->dec_mbox.mbox = ivtv_search_mailbox(itv->dec_mem, IVTV_DECODER_SIZE);
231 if (itv->dec_mbox.mbox == NULL)
232 IVTV_ERR("Decoder mailbox not found\n");
233 else if (itv->has_cx23415 && ivtv_vapi(itv, CX2341X_DEC_PING_FW, 0)) {
234 IVTV_ERR("Decoder firmware dead!\n");
235 itv->dec_mbox.mbox = NULL;
236 }
237 return itv->dec_mbox.mbox ? 0 : -ENODEV;
238}
239
240void ivtv_init_mpeg_decoder(struct ivtv *itv)
241{
242 u32 data[CX2341X_MBOX_MAX_DATA];
243 long readbytes;
244 volatile u8 __iomem *mem_offset;
245
246 data[0] = 0;
247 data[1] = itv->params.width; /* YUV source width */
248 data[2] = itv->params.height;
249 data[3] = itv->params.audio_properties; /* Audio settings to use,
250 bitmap. see docs. */
251 if (ivtv_api(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, data)) {
252 IVTV_ERR("ivtv_init_mpeg_decoder failed to set decoder source\n");
253 return;
254 }
255
256 if (ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1) != 0) {
257 IVTV_ERR("ivtv_init_mpeg_decoder failed to start playback\n");
258 return;
259 }
260 ivtv_api_get_data(&itv->dec_mbox, IVTV_MBOX_DMA, data);
261 mem_offset = itv->dec_mem + data[1];
262
263 if ((readbytes = load_fw_direct(IVTV_DECODE_INIT_MPEG_FILENAME,
264 mem_offset, itv, IVTV_DECODE_INIT_MPEG_SIZE)) <= 0) {
265 IVTV_DEBUG_WARN("failed to read mpeg decoder initialisation file %s\n",
266 IVTV_DECODE_INIT_MPEG_FILENAME);
267 } else {
268 ivtv_vapi(itv, CX2341X_DEC_SCHED_DMA_FROM_HOST, 3, 0, readbytes, 0);
269 ivtv_sleep_timeout(HZ / 10, 0);
270 }
271 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 4, 0, 0, 0, 1);
272}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-03 02:47:56 -0500