![Hans Verkuil](/assets/img/avatar_default.png)
This ioctl is defined as IOW, so pass the argument by value instead of by reference. I could have chosen to add const instead, but this is 1) easier to handle in drivers and 2) consistent with the s_std subdev operation. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Jonathan Corbet <corbet@lwn.net> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
403 lines
12 KiB
C
403 lines
12 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 "ivtv-ioctl.h"
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#include "ivtv-cards.h"
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#include <linux/firmware.h>
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#include <media/saa7127.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->pdev->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 preceded 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->cxhdl.width; /* YUV source width */
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data[2] = itv->cxhdl.height;
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data[3] = itv->cxhdl.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, 2, 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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/* Try to restart the card & restore previous settings */
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static int ivtv_firmware_restart(struct ivtv *itv)
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{
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int rc = 0;
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v4l2_std_id std;
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if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)
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/* Display test image during restart */
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ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_routing,
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SAA7127_INPUT_TYPE_TEST_IMAGE,
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itv->card->video_outputs[itv->active_output].video_output,
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0);
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mutex_lock(&itv->udma.lock);
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rc = ivtv_firmware_init(itv);
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if (rc) {
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mutex_unlock(&itv->udma.lock);
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return rc;
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}
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/* Allow settings to reload */
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ivtv_mailbox_cache_invalidate(itv);
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/* Restore encoder video standard */
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std = itv->std;
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itv->std = 0;
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ivtv_s_std_enc(itv, std);
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if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
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ivtv_init_mpeg_decoder(itv);
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/* Restore decoder video standard */
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std = itv->std_out;
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itv->std_out = 0;
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ivtv_s_std_dec(itv, std);
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/* Restore framebuffer if active */
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if (itv->ivtvfb_restore)
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itv->ivtvfb_restore(itv);
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/* Restore alpha settings */
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ivtv_set_osd_alpha(itv);
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/* Restore normal output */
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ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_routing,
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SAA7127_INPUT_TYPE_NORMAL,
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itv->card->video_outputs[itv->active_output].video_output,
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0);
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}
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mutex_unlock(&itv->udma.lock);
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return rc;
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}
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/* Check firmware running state. The checks fall through
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allowing multiple failures to be logged. */
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int ivtv_firmware_check(struct ivtv *itv, char *where)
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{
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int res = 0;
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/* Check encoder is still running */
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if (ivtv_vapi(itv, CX2341X_ENC_PING_FW, 0) < 0) {
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IVTV_WARN("Encoder has died : %s\n", where);
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res = -1;
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}
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/* Also check audio. Only check if not in use & encoder is okay */
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if (!res && !atomic_read(&itv->capturing) &&
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(!atomic_read(&itv->decoding) ||
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(atomic_read(&itv->decoding) < 2 && test_bit(IVTV_F_I_DEC_YUV,
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&itv->i_flags)))) {
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if (ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12) < 0) {
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IVTV_WARN("Audio has died (Encoder OK) : %s\n", where);
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res = -2;
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}
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}
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if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
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/* Second audio check. Skip if audio already failed */
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if (res != -2 && read_dec(0x100) != read_dec(0x104)) {
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/* Wait & try again to be certain. */
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ivtv_msleep_timeout(14, 0);
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if (read_dec(0x100) != read_dec(0x104)) {
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IVTV_WARN("Audio has died (Decoder) : %s\n",
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where);
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res = -1;
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}
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}
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/* Check decoder is still running */
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if (ivtv_vapi(itv, CX2341X_DEC_PING_FW, 0) < 0) {
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IVTV_WARN("Decoder has died : %s\n", where);
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res = -1;
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}
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}
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/* If something failed & currently idle, try to reload */
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if (res && !atomic_read(&itv->capturing) &&
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!atomic_read(&itv->decoding)) {
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IVTV_INFO("Detected in %s that firmware had failed - "
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"Reloading\n", where);
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res = ivtv_firmware_restart(itv);
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/*
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* Even if restarted ok, still signal a problem had occurred.
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* The caller can come through this function again to check
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* if things are really ok after the restart.
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*/
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if (!res) {
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IVTV_INFO("Firmware restart okay\n");
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res = -EAGAIN;
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} else {
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IVTV_INFO("Firmware restart failed\n");
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}
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} else if (res) {
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res = -EIO;
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}
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return res;
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}
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MODULE_FIRMWARE(CX2341X_FIRM_ENC_FILENAME);
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MODULE_FIRMWARE(CX2341X_FIRM_DEC_FILENAME);
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MODULE_FIRMWARE(IVTV_DECODE_INIT_MPEG_FILENAME);
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