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