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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license. When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2018 Intel Corporation. All rights reserved.
//
// Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>
// Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
// Rander Wang <rander.wang@intel.com>
// Keyon Jie <yang.jie@linux.intel.com>
//
/*
* Hardware interface for HDA DSP code loader
*/
#include <linux/firmware.h>
#include <sound/hdaudio_ext.h>
#include <sound/hda_register.h>
#include <sound/sof.h>
#include "ext_manifest.h"
#include "../ops.h"
#include "../sof-priv.h"
#include "hda.h"
#define HDA_CL_STREAM_FORMAT 0x40
static void hda_ssp_set_cbp_cfp(struct snd_sof_dev *sdev)
{
struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
const struct sof_intel_dsp_desc *chip = hda->desc;
int i;
/* DSP is powered up, set all SSPs to clock consumer/codec provider mode */
for (i = 0; i < chip->ssp_count; i++) {
snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR,
chip->ssp_base_offset
+ i * SSP_DEV_MEM_SIZE
+ SSP_SSC1_OFFSET,
SSP_SET_CBP_CFP,
SSP_SET_CBP_CFP);
}
}
static struct hdac_ext_stream *cl_stream_prepare(struct snd_sof_dev *sdev, unsigned int format,
unsigned int size, struct snd_dma_buffer *dmab,
int direction)
{
struct hdac_ext_stream *hext_stream;
struct hdac_stream *hstream;
struct pci_dev *pci = to_pci_dev(sdev->dev);
int ret;
hext_stream = hda_dsp_stream_get(sdev, direction, 0);
if (!hext_stream) {
dev_err(sdev->dev, "error: no stream available\n");
return ERR_PTR(-ENODEV);
}
hstream = &hext_stream->hstream;
hstream->substream = NULL;
/* allocate DMA buffer */
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV_SG, &pci->dev, size, dmab);
if (ret < 0) {
dev_err(sdev->dev, "error: memory alloc failed: %d\n", ret);
goto out_put;
}
hstream->period_bytes = 0;/* initialize period_bytes */
hstream->format_val = format;
hstream->bufsize = size;
if (direction == SNDRV_PCM_STREAM_CAPTURE) {
ret = hda_dsp_iccmax_stream_hw_params(sdev, hext_stream, dmab, NULL);
if (ret < 0) {
dev_err(sdev->dev, "error: iccmax stream prepare failed: %d\n", ret);
goto out_free;
}
} else {
ret = hda_dsp_stream_hw_params(sdev, hext_stream, dmab, NULL);
if (ret < 0) {
dev_err(sdev->dev, "error: hdac prepare failed: %d\n", ret);
goto out_free;
}
hda_dsp_stream_spib_config(sdev, hext_stream, HDA_DSP_SPIB_ENABLE, size);
}
return hext_stream;
out_free:
snd_dma_free_pages(dmab);
out_put:
hda_dsp_stream_put(sdev, direction, hstream->stream_tag);
return ERR_PTR(ret);
}
/*
* first boot sequence has some extra steps. core 0 waits for power
* status on core 1, so power up core 1 also momentarily, keep it in
* reset/stall and then turn it off
*/
static int cl_dsp_init(struct snd_sof_dev *sdev, int stream_tag)
{
struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
const struct sof_intel_dsp_desc *chip = hda->desc;
unsigned int status;
unsigned long mask;
char *dump_msg;
u32 flags, j;
int ret;
/* step 1: power up corex */
ret = hda_dsp_enable_core(sdev, chip->host_managed_cores_mask);
if (ret < 0) {
if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS)
dev_err(sdev->dev, "error: dsp core 0/1 power up failed\n");
goto err;
}
hda_ssp_set_cbp_cfp(sdev);
/* step 2: purge FW request */
snd_sof_dsp_write(sdev, HDA_DSP_BAR, chip->ipc_req,
chip->ipc_req_mask | (HDA_DSP_IPC_PURGE_FW |
((stream_tag - 1) << 9)));
/* step 3: unset core 0 reset state & unstall/run core 0 */
ret = hda_dsp_core_run(sdev, BIT(0));
if (ret < 0) {
if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS)
dev_err(sdev->dev,
"error: dsp core start failed %d\n", ret);
ret = -EIO;
goto err;
}
/* step 4: wait for IPC DONE bit from ROM */
ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR,
chip->ipc_ack, status,
((status & chip->ipc_ack_mask)
== chip->ipc_ack_mask),
HDA_DSP_REG_POLL_INTERVAL_US,
HDA_DSP_INIT_TIMEOUT_US);
if (ret < 0) {
if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS)
dev_err(sdev->dev,
"error: %s: timeout for HIPCIE done\n",
__func__);
goto err;
}
/* set DONE bit to clear the reply IPC message */
snd_sof_dsp_update_bits_forced(sdev, HDA_DSP_BAR,
chip->ipc_ack,
chip->ipc_ack_mask,
chip->ipc_ack_mask);
/* step 5: power down cores that are no longer needed */
ret = hda_dsp_core_reset_power_down(sdev, chip->host_managed_cores_mask &
~(chip->init_core_mask));
if (ret < 0) {
if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS)
dev_err(sdev->dev,
"error: dsp core x power down failed\n");
goto err;
}
/* step 6: enable IPC interrupts */
hda_dsp_ipc_int_enable(sdev);
/* step 7: wait for ROM init */
ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR,
HDA_DSP_SRAM_REG_ROM_STATUS, status,
((status & HDA_DSP_ROM_STS_MASK)
== HDA_DSP_ROM_INIT),
HDA_DSP_REG_POLL_INTERVAL_US,
chip->rom_init_timeout *
USEC_PER_MSEC);
if (!ret) {
/* set enabled cores mask and increment ref count for cores in init_core_mask */
sdev->enabled_cores_mask |= chip->init_core_mask;
mask = sdev->enabled_cores_mask;
for_each_set_bit(j, &mask, SOF_MAX_DSP_NUM_CORES)
sdev->dsp_core_ref_count[j]++;
return 0;
}
if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS)
dev_err(sdev->dev,
"error: %s: timeout HDA_DSP_SRAM_REG_ROM_STATUS read\n",
__func__);
err:
flags = SOF_DBG_DUMP_PCI | SOF_DBG_DUMP_MBOX | SOF_DBG_DUMP_OPTIONAL;
/* after max boot attempts make sure that the dump is printed */
if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS)
flags &= ~SOF_DBG_DUMP_OPTIONAL;
dump_msg = kasprintf(GFP_KERNEL, "Boot iteration failed: %d/%d",
hda->boot_iteration, HDA_FW_BOOT_ATTEMPTS);
snd_sof_dsp_dbg_dump(sdev, dump_msg, flags);
hda_dsp_core_reset_power_down(sdev, chip->host_managed_cores_mask);
kfree(dump_msg);
return ret;
}
static int cl_trigger(struct snd_sof_dev *sdev,
struct hdac_ext_stream *hext_stream, int cmd)
{
struct hdac_stream *hstream = &hext_stream->hstream;
int sd_offset = SOF_STREAM_SD_OFFSET(hstream);
/* code loader is special case that reuses stream ops */
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL,
1 << hstream->index,
1 << hstream->index);
snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
sd_offset,
SOF_HDA_SD_CTL_DMA_START |
SOF_HDA_CL_DMA_SD_INT_MASK,
SOF_HDA_SD_CTL_DMA_START |
SOF_HDA_CL_DMA_SD_INT_MASK);
hstream->running = true;
return 0;
default:
return hda_dsp_stream_trigger(sdev, hext_stream, cmd);
}
}
static int cl_cleanup(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab,
struct hdac_ext_stream *hext_stream)
{
struct hdac_stream *hstream = &hext_stream->hstream;
int sd_offset = SOF_STREAM_SD_OFFSET(hstream);
int ret = 0;
if (hstream->direction == SNDRV_PCM_STREAM_PLAYBACK)
ret = hda_dsp_stream_spib_config(sdev, hext_stream, HDA_DSP_SPIB_DISABLE, 0);
else
snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, sd_offset,
SOF_HDA_SD_CTL_DMA_START, 0);
hda_dsp_stream_put(sdev, hstream->direction, hstream->stream_tag);
hstream->running = 0;
hstream->substream = NULL;
/* reset BDL address */
snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPL, 0);
snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPU, 0);
snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, sd_offset, 0);
snd_dma_free_pages(dmab);
dmab->area = NULL;
hstream->bufsize = 0;
hstream->format_val = 0;
return ret;
}
static int cl_copy_fw(struct snd_sof_dev *sdev, struct hdac_ext_stream *hext_stream)
{
unsigned int reg;
int ret, status;
ret = cl_trigger(sdev, hext_stream, SNDRV_PCM_TRIGGER_START);
if (ret < 0) {
dev_err(sdev->dev, "error: DMA trigger start failed\n");
return ret;
}
status = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR,
HDA_DSP_SRAM_REG_ROM_STATUS, reg,
((reg & HDA_DSP_ROM_STS_MASK)
== HDA_DSP_ROM_FW_ENTERED),
HDA_DSP_REG_POLL_INTERVAL_US,
HDA_DSP_BASEFW_TIMEOUT_US);
/*
* even in case of errors we still need to stop the DMAs,
* but we return the initial error should the DMA stop also fail
*/
if (status < 0) {
dev_err(sdev->dev,
"error: %s: timeout HDA_DSP_SRAM_REG_ROM_STATUS read\n",
__func__);
}
ret = cl_trigger(sdev, hext_stream, SNDRV_PCM_TRIGGER_STOP);
if (ret < 0) {
dev_err(sdev->dev, "error: DMA trigger stop failed\n");
if (!status)
status = ret;
}
return status;
}
int hda_dsp_cl_boot_firmware_iccmax(struct snd_sof_dev *sdev)
{
struct snd_sof_pdata *plat_data = sdev->pdata;
struct hdac_ext_stream *iccmax_stream;
struct hdac_bus *bus = sof_to_bus(sdev);
struct firmware stripped_firmware;
int ret, ret1;
u8 original_gb;
/* save the original LTRP guardband value */
original_gb = snd_hdac_chip_readb(bus, VS_LTRP) & HDA_VS_INTEL_LTRP_GB_MASK;
if (plat_data->fw->size <= plat_data->fw_offset) {
dev_err(sdev->dev, "error: firmware size must be greater than firmware offset\n");
return -EINVAL;
}
stripped_firmware.size = plat_data->fw->size - plat_data->fw_offset;
/* prepare capture stream for ICCMAX */
iccmax_stream = cl_stream_prepare(sdev, HDA_CL_STREAM_FORMAT, stripped_firmware.size,
&sdev->dmab_bdl, SNDRV_PCM_STREAM_CAPTURE);
if (IS_ERR(iccmax_stream)) {
dev_err(sdev->dev, "error: dma prepare for ICCMAX stream failed\n");
return PTR_ERR(iccmax_stream);
}
ret = hda_dsp_cl_boot_firmware(sdev);
/*
* Perform iccmax stream cleanup. This should be done even if firmware loading fails.
* If the cleanup also fails, we return the initial error
*/
ret1 = cl_cleanup(sdev, &sdev->dmab_bdl, iccmax_stream);
if (ret1 < 0) {
dev_err(sdev->dev, "error: ICCMAX stream cleanup failed\n");
/* set return value to indicate cleanup failure */
if (!ret)
ret = ret1;
}
/* restore the original guardband value after FW boot */
snd_hdac_chip_updateb(bus, VS_LTRP, HDA_VS_INTEL_LTRP_GB_MASK, original_gb);
return ret;
}
static int hda_dsp_boot_imr(struct snd_sof_dev *sdev)
{
struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
const struct sof_intel_dsp_desc *chip = hda->desc;
unsigned long mask;
u32 j;
int ret;
/* power up & unstall/run the cores to run the firmware */
ret = hda_dsp_enable_core(sdev, chip->init_core_mask);
if (ret < 0) {
dev_err(sdev->dev, "dsp core start failed %d\n", ret);
return -EIO;
}
/* set enabled cores mask and increment ref count for cores in init_core_mask */
sdev->enabled_cores_mask |= chip->init_core_mask;
mask = sdev->enabled_cores_mask;
for_each_set_bit(j, &mask, SOF_MAX_DSP_NUM_CORES)
sdev->dsp_core_ref_count[j]++;
hda_ssp_set_cbp_cfp(sdev);
/* enable IPC interrupts */
hda_dsp_ipc_int_enable(sdev);
/* process wakes */
hda_sdw_process_wakeen(sdev);
return ret;
}
int hda_dsp_cl_boot_firmware(struct snd_sof_dev *sdev)
{
struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
struct snd_sof_pdata *plat_data = sdev->pdata;
const struct sof_dev_desc *desc = plat_data->desc;
const struct sof_intel_dsp_desc *chip_info;
struct hdac_ext_stream *hext_stream;
struct firmware stripped_firmware;
int ret, ret1, i;
if ((sdev->fw_ready.flags & SOF_IPC_INFO_D3_PERSISTENT) &&
!(sof_debug_check_flag(SOF_DBG_IGNORE_D3_PERSISTENT)) &&
!sdev->first_boot) {
dev_dbg(sdev->dev, "IMR restore supported, booting from IMR directly\n");
return hda_dsp_boot_imr(sdev);
}
chip_info = desc->chip_info;
if (plat_data->fw->size <= plat_data->fw_offset) {
dev_err(sdev->dev, "error: firmware size must be greater than firmware offset\n");
return -EINVAL;
}
stripped_firmware.data = plat_data->fw->data + plat_data->fw_offset;
stripped_firmware.size = plat_data->fw->size - plat_data->fw_offset;
/* init for booting wait */
init_waitqueue_head(&sdev->boot_wait);
/* prepare DMA for code loader stream */
hext_stream = cl_stream_prepare(sdev, HDA_CL_STREAM_FORMAT, stripped_firmware.size,
&sdev->dmab, SNDRV_PCM_STREAM_PLAYBACK);
if (IS_ERR(hext_stream)) {
dev_err(sdev->dev, "error: dma prepare for fw loading failed\n");
return PTR_ERR(hext_stream);
}
memcpy(sdev->dmab.area, stripped_firmware.data,
stripped_firmware.size);
/* try ROM init a few times before giving up */
for (i = 0; i < HDA_FW_BOOT_ATTEMPTS; i++) {
dev_dbg(sdev->dev,
"Attempting iteration %d of Core En/ROM load...\n", i);
hda->boot_iteration = i + 1;
ret = cl_dsp_init(sdev, hext_stream->hstream.stream_tag);
/* don't retry anymore if successful */
if (!ret)
break;
}
if (i == HDA_FW_BOOT_ATTEMPTS) {
dev_err(sdev->dev, "error: dsp init failed after %d attempts with err: %d\n",
i, ret);
goto cleanup;
}
/*
* When a SoundWire link is in clock stop state, a Slave
* device may trigger in-band wakes for events such as jack
* insertion or acoustic event detection. This event will lead
* to a WAKEEN interrupt, handled by the PCI device and routed
* to PME if the PCI device is in D3. The resume function in
* audio PCI driver will be invoked by ACPI for PME event and
* initialize the device and process WAKEEN interrupt.
*
* The WAKEEN interrupt should be processed ASAP to prevent an
* interrupt flood, otherwise other interrupts, such IPC,
* cannot work normally. The WAKEEN is handled after the ROM
* is initialized successfully, which ensures power rails are
* enabled before accessing the SoundWire SHIM registers
*/
if (!sdev->first_boot)
hda_sdw_process_wakeen(sdev);
/*
* Set the boot_iteration to the last attempt, indicating that the
* DSP ROM has been initialized and from this point there will be no
* retry done to boot.
*
* Continue with code loading and firmware boot
*/
hda->boot_iteration = HDA_FW_BOOT_ATTEMPTS;
ret = cl_copy_fw(sdev, hext_stream);
if (!ret)
dev_dbg(sdev->dev, "Firmware download successful, booting...\n");
else
snd_sof_dsp_dbg_dump(sdev, "Firmware download failed",
SOF_DBG_DUMP_PCI | SOF_DBG_DUMP_MBOX);
cleanup:
/*
* Perform codeloader stream cleanup.
* This should be done even if firmware loading fails.
* If the cleanup also fails, we return the initial error
*/
ret1 = cl_cleanup(sdev, &sdev->dmab, hext_stream);
if (ret1 < 0) {
dev_err(sdev->dev, "error: Code loader DSP cleanup failed\n");
/* set return value to indicate cleanup failure */
if (!ret)
ret = ret1;
}
/*
* return primary core id if both fw copy
* and stream clean up are successful
*/
if (!ret)
return chip_info->init_core_mask;
/* disable DSP */
snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR,
SOF_HDA_REG_PP_PPCTL,
SOF_HDA_PPCTL_GPROCEN, 0);
return ret;
}
/* pre fw run operations */
int hda_dsp_pre_fw_run(struct snd_sof_dev *sdev)
{
/* disable clock gating and power gating */
return hda_dsp_ctrl_clock_power_gating(sdev, false);
}
/* post fw run operations */
int hda_dsp_post_fw_run(struct snd_sof_dev *sdev)
{
int ret;
if (sdev->first_boot) {
ret = hda_sdw_startup(sdev);
if (ret < 0) {
dev_err(sdev->dev,
"error: could not startup SoundWire links\n");
return ret;
}
}
hda_sdw_int_enable(sdev, true);
/* re-enable clock gating and power gating */
return hda_dsp_ctrl_clock_power_gating(sdev, true);
}
int hda_dsp_ext_man_get_cavs_config_data(struct snd_sof_dev *sdev,
const struct sof_ext_man_elem_header *hdr)
{
const struct sof_ext_man_cavs_config_data *config_data =
container_of(hdr, struct sof_ext_man_cavs_config_data, hdr);
struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
int i, elem_num;
/* calculate total number of config data elements */
elem_num = (hdr->size - sizeof(struct sof_ext_man_elem_header))
/ sizeof(struct sof_config_elem);
if (elem_num <= 0) {
dev_err(sdev->dev, "cavs config data is inconsistent: %d\n", elem_num);
return -EINVAL;
}
for (i = 0; i < elem_num; i++)
switch (config_data->elems[i].token) {
case SOF_EXT_MAN_CAVS_CONFIG_EMPTY:
/* skip empty token */
break;
case SOF_EXT_MAN_CAVS_CONFIG_CAVS_LPRO:
hda->clk_config_lpro = config_data->elems[i].value;
dev_dbg(sdev->dev, "FW clock config: %s\n",
hda->clk_config_lpro ? "LPRO" : "HPRO");
break;
case SOF_EXT_MAN_CAVS_CONFIG_OUTBOX_SIZE:
case SOF_EXT_MAN_CAVS_CONFIG_INBOX_SIZE:
/* These elements are defined but not being used yet. No warn is required */
break;
default:
dev_info(sdev->dev, "unsupported token type: %d\n",
config_data->elems[i].token);
}
return 0;
}