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/*
ivtv firmware functions.
Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
Copyright (C) 2004 Chris Kennedy <c@groovy.org>
Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "ivtv-driver.h"
#include "ivtv-mailbox.h"
#include "ivtv-firmware.h"
#include <linux/firmware.h>
#define IVTV_MASK_SPU_ENABLE 0xFFFFFFFE
#define IVTV_MASK_VPU_ENABLE15 0xFFFFFFF6
#define IVTV_MASK_VPU_ENABLE16 0xFFFFFFFB
#define IVTV_CMD_VDM_STOP 0x00000000
#define IVTV_CMD_AO_STOP 0x00000005
#define IVTV_CMD_APU_PING 0x00000000
#define IVTV_CMD_VPU_STOP15 0xFFFFFFFE
#define IVTV_CMD_VPU_STOP16 0xFFFFFFEE
#define IVTV_CMD_HW_BLOCKS_RST 0xFFFFFFFF
#define IVTV_CMD_SPU_STOP 0x00000001
#define IVTV_CMD_SDRAM_PRECHARGE_INIT 0x0000001A
#define IVTV_CMD_SDRAM_REFRESH_INIT 0x80000640
#define IVTV_SDRAM_SLEEPTIME (60 * HZ / 100) /* 600 ms */
#define IVTV_DECODE_INIT_MPEG_FILENAME "v4l-cx2341x-init.mpg"
#define IVTV_DECODE_INIT_MPEG_SIZE (152*1024)
/* Encoder/decoder firmware sizes */
#define IVTV_FW_ENC_SIZE (376836)
#define IVTV_FW_DEC_SIZE (256*1024)
static int load_fw_direct(const char *fn, volatile u8 __iomem *mem, struct ivtv *itv, long size)
{
const struct firmware *fw = NULL;
int retries = 3;
retry:
if (retries && request_firmware(&fw, fn, &itv->dev->dev) == 0) {
int i;
volatile u32 __iomem *dst = (volatile u32 __iomem *)mem;
const u32 *src = (const u32 *)fw->data;
if (fw->size != size) {
/* Due to race conditions in firmware loading (esp. with udev <0.95)
the wrong file was sometimes loaded. So we check filesizes to
see if at least the right-sized file was loaded. If not, then we
retry. */
IVTV_INFO("retry: file loaded was not %s (expected size %ld, got %zd)\n", fn, size, fw->size);
release_firmware(fw);
retries--;
goto retry;
}
for (i = 0; i < fw->size; i += 4) {
/* no need for endianness conversion on the ppc */
__raw_writel(*src, dst);
dst++;
src++;
}
release_firmware(fw);
IVTV_INFO("loaded %s firmware (%zd bytes)\n", fn, fw->size);
return size;
}
IVTV_ERR("unable to open firmware %s (must be %ld bytes)\n", fn, size);
IVTV_ERR("did you put the firmware in the hotplug firmware directory?\n");
return -ENOMEM;
}
void ivtv_halt_firmware(struct ivtv *itv)
{
IVTV_DEBUG_INFO("Preparing for firmware halt.\n");
if (itv->has_cx23415 && itv->dec_mbox.mbox)
ivtv_vapi(itv, CX2341X_DEC_HALT_FW, 0);
if (itv->enc_mbox.mbox)
ivtv_vapi(itv, CX2341X_ENC_HALT_FW, 0);
ivtv_sleep_timeout(HZ / 100, 0);
itv->enc_mbox.mbox = itv->dec_mbox.mbox = NULL;
IVTV_DEBUG_INFO("Stopping VDM\n");
write_reg(IVTV_CMD_VDM_STOP, IVTV_REG_VDM);
IVTV_DEBUG_INFO("Stopping AO\n");
write_reg(IVTV_CMD_AO_STOP, IVTV_REG_AO);
IVTV_DEBUG_INFO("pinging (?) APU\n");
write_reg(IVTV_CMD_APU_PING, IVTV_REG_APU);
IVTV_DEBUG_INFO("Stopping VPU\n");
if (!itv->has_cx23415)
write_reg(IVTV_CMD_VPU_STOP16, IVTV_REG_VPU);
else
write_reg(IVTV_CMD_VPU_STOP15, IVTV_REG_VPU);
IVTV_DEBUG_INFO("Resetting Hw Blocks\n");
write_reg(IVTV_CMD_HW_BLOCKS_RST, IVTV_REG_HW_BLOCKS);
IVTV_DEBUG_INFO("Stopping SPU\n");
write_reg(IVTV_CMD_SPU_STOP, IVTV_REG_SPU);
ivtv_sleep_timeout(HZ / 100, 0);
IVTV_DEBUG_INFO("init Encoder SDRAM pre-charge\n");
write_reg(IVTV_CMD_SDRAM_PRECHARGE_INIT, IVTV_REG_ENC_SDRAM_PRECHARGE);
IVTV_DEBUG_INFO("init Encoder SDRAM refresh to 1us\n");
write_reg(IVTV_CMD_SDRAM_REFRESH_INIT, IVTV_REG_ENC_SDRAM_REFRESH);
if (itv->has_cx23415) {
IVTV_DEBUG_INFO("init Decoder SDRAM pre-charge\n");
write_reg(IVTV_CMD_SDRAM_PRECHARGE_INIT, IVTV_REG_DEC_SDRAM_PRECHARGE);
IVTV_DEBUG_INFO("init Decoder SDRAM refresh to 1us\n");
write_reg(IVTV_CMD_SDRAM_REFRESH_INIT, IVTV_REG_DEC_SDRAM_REFRESH);
}
IVTV_DEBUG_INFO("Sleeping for %dms (600 recommended)\n",
(int)(IVTV_SDRAM_SLEEPTIME * 1000 / HZ));
ivtv_sleep_timeout(IVTV_SDRAM_SLEEPTIME, 0);
}
void ivtv_firmware_versions(struct ivtv *itv)
{
u32 data[CX2341X_MBOX_MAX_DATA];
/* Encoder */
ivtv_vapi_result(itv, data, CX2341X_ENC_GET_VERSION, 0);
IVTV_INFO("Encoder revision: 0x%08x\n", data[0]);
if (data[0] != 0x02060039)
IVTV_WARN("Recommended firmware version is 0x02060039.\n");
if (itv->has_cx23415) {
/* Decoder */
ivtv_vapi_result(itv, data, CX2341X_DEC_GET_VERSION, 0);
IVTV_INFO("Decoder revision: 0x%08x\n", data[0]);
}
}
static int ivtv_firmware_copy(struct ivtv *itv)
{
IVTV_DEBUG_INFO("Loading encoder image\n");
if (load_fw_direct(CX2341X_FIRM_ENC_FILENAME,
itv->enc_mem, itv, IVTV_FW_ENC_SIZE) != IVTV_FW_ENC_SIZE) {
IVTV_DEBUG_WARN("failed loading encoder firmware\n");
return -3;
}
if (!itv->has_cx23415)
return 0;
IVTV_DEBUG_INFO("Loading decoder image\n");
if (load_fw_direct(CX2341X_FIRM_DEC_FILENAME,
itv->dec_mem, itv, IVTV_FW_DEC_SIZE) != IVTV_FW_DEC_SIZE) {
IVTV_DEBUG_WARN("failed loading decoder firmware\n");
return -1;
}
return 0;
}
static volatile struct ivtv_mailbox __iomem *ivtv_search_mailbox(const volatile u8 __iomem *mem, u32 size)
{
int i;
/* mailbox is preceeded by a 16 byte 'magic cookie' starting at a 256-byte
address boundary */
for (i = 0; i < size; i += 0x100) {
if (readl(mem + i) == 0x12345678 &&
readl(mem + i + 4) == 0x34567812 &&
readl(mem + i + 8) == 0x56781234 &&
readl(mem + i + 12) == 0x78123456) {
return (volatile struct ivtv_mailbox __iomem *)(mem + i + 16);
}
}
return NULL;
}
int ivtv_firmware_init(struct ivtv *itv)
{
int err;
ivtv_halt_firmware(itv);
/* load firmware */
err = ivtv_firmware_copy(itv);
if (err) {
IVTV_DEBUG_WARN("Error %d loading firmware\n", err);
return err;
}
/* start firmware */
write_reg(read_reg(IVTV_REG_SPU) & IVTV_MASK_SPU_ENABLE, IVTV_REG_SPU);
ivtv_sleep_timeout(HZ / 10, 0);
if (itv->has_cx23415)
write_reg(read_reg(IVTV_REG_VPU) & IVTV_MASK_VPU_ENABLE15, IVTV_REG_VPU);
else
write_reg(read_reg(IVTV_REG_VPU) & IVTV_MASK_VPU_ENABLE16, IVTV_REG_VPU);
ivtv_sleep_timeout(HZ / 10, 0);
/* find mailboxes and ping firmware */
itv->enc_mbox.mbox = ivtv_search_mailbox(itv->enc_mem, IVTV_ENCODER_SIZE);
if (itv->enc_mbox.mbox == NULL)
IVTV_ERR("Encoder mailbox not found\n");
else if (ivtv_vapi(itv, CX2341X_ENC_PING_FW, 0)) {
IVTV_ERR("Encoder firmware dead!\n");
itv->enc_mbox.mbox = NULL;
}
if (itv->enc_mbox.mbox == NULL)
return -ENODEV;
if (!itv->has_cx23415)
return 0;
itv->dec_mbox.mbox = ivtv_search_mailbox(itv->dec_mem, IVTV_DECODER_SIZE);
if (itv->dec_mbox.mbox == NULL)
IVTV_ERR("Decoder mailbox not found\n");
else if (itv->has_cx23415 && ivtv_vapi(itv, CX2341X_DEC_PING_FW, 0)) {
IVTV_ERR("Decoder firmware dead!\n");
itv->dec_mbox.mbox = NULL;
}
return itv->dec_mbox.mbox ? 0 : -ENODEV;
}
void ivtv_init_mpeg_decoder(struct ivtv *itv)
{
u32 data[CX2341X_MBOX_MAX_DATA];
long readbytes;
volatile u8 __iomem *mem_offset;
data[0] = 0;
data[1] = itv->params.width; /* YUV source width */
data[2] = itv->params.height;
data[3] = itv->params.audio_properties; /* Audio settings to use,
bitmap. see docs. */
if (ivtv_api(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, data)) {
IVTV_ERR("ivtv_init_mpeg_decoder failed to set decoder source\n");
return;
}
if (ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1) != 0) {
IVTV_ERR("ivtv_init_mpeg_decoder failed to start playback\n");
return;
}
ivtv_api_get_data(&itv->dec_mbox, IVTV_MBOX_DMA, data);
mem_offset = itv->dec_mem + data[1];
if ((readbytes = load_fw_direct(IVTV_DECODE_INIT_MPEG_FILENAME,
mem_offset, itv, IVTV_DECODE_INIT_MPEG_SIZE)) <= 0) {
IVTV_DEBUG_WARN("failed to read mpeg decoder initialisation file %s\n",
IVTV_DECODE_INIT_MPEG_FILENAME);
} else {
ivtv_vapi(itv, CX2341X_DEC_SCHED_DMA_FROM_HOST, 3, 0, readbytes, 0);
ivtv_sleep_timeout(HZ / 10, 0);
}
ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 4, 0, 0, 0, 1);
}
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