// 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) 2018-2021 Intel Corporation
//
// Author: Liam Girdwood <[email protected]>
//
/*
* Hardware interface for audio DSP on Atom devices
*/
#include <linux/module.h>
#include <sound/sof.h>
#include <sound/sof/xtensa.h>
#include <sound/soc-acpi.h>
#include <sound/soc-acpi-intel-match.h>
#include <sound/intel-dsp-config.h>
#include "../ops.h"
#include "shim.h"
#include "atom.h"
#include "../sof-acpi-dev.h"
#include "../sof-audio.h"
#include "../../intel/common/soc-intel-quirks.h"
static void atom_host_done(struct snd_sof_dev *sdev);
static void atom_dsp_done(struct snd_sof_dev *sdev);
/*
* Debug
*/
static void atom_get_registers(struct snd_sof_dev *sdev,
struct sof_ipc_dsp_oops_xtensa *xoops,
struct sof_ipc_panic_info *panic_info,
u32 *stack, size_t stack_words)
{
u32 offset = sdev->dsp_oops_offset;
/* first read regsisters */
sof_mailbox_read(sdev, offset, xoops, sizeof(*xoops));
/* note: variable AR register array is not read */
/* then get panic info */
if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) {
dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n",
xoops->arch_hdr.totalsize);
return;
}
offset += xoops->arch_hdr.totalsize;
sof_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info));
/* then get the stack */
offset += sizeof(*panic_info);
sof_mailbox_read(sdev, offset, stack, stack_words * sizeof(u32));
}
void atom_dump(struct snd_sof_dev *sdev, u32 flags)
{
struct sof_ipc_dsp_oops_xtensa xoops;
struct sof_ipc_panic_info panic_info;
u32 stack[STACK_DUMP_SIZE];
u64 status, panic, imrd, imrx;
/* now try generic SOF status messages */
status = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCD);
panic = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCX);
atom_get_registers(sdev, &xoops, &panic_info, stack,
STACK_DUMP_SIZE);
sof_print_oops_and_stack(sdev, KERN_ERR, status, panic, &xoops,
&panic_info, stack, STACK_DUMP_SIZE);
/* provide some context for firmware debug */
imrx = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IMRX);
imrd = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IMRD);
dev_err(sdev->dev,
"error: ipc host -> DSP: pending %s complete %s raw 0x%llx\n",
(panic & SHIM_IPCX_BUSY) ? "yes" : "no",
(panic & SHIM_IPCX_DONE) ? "yes" : "no", panic);
dev_err(sdev->dev,
"error: mask host: pending %s complete %s raw 0x%llx\n",
(imrx & SHIM_IMRX_BUSY) ? "yes" : "no",
(imrx & SHIM_IMRX_DONE) ? "yes" : "no", imrx);
dev_err(sdev->dev,
"error: ipc DSP -> host: pending %s complete %s raw 0x%llx\n",
(status & SHIM_IPCD_BUSY) ? "yes" : "no",
(status & SHIM_IPCD_DONE) ? "yes" : "no", status);
dev_err(sdev->dev,
"error: mask DSP: pending %s complete %s raw 0x%llx\n",
(imrd & SHIM_IMRD_BUSY) ? "yes" : "no",
(imrd & SHIM_IMRD_DONE) ? "yes" : "no", imrd);
}
EXPORT_SYMBOL_NS(atom_dump, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
/*
* IPC Doorbell IRQ handler and thread.
*/
irqreturn_t atom_irq_handler(int irq, void *context)
{
struct snd_sof_dev *sdev = context;
u64 ipcx, ipcd;
int ret = IRQ_NONE;
ipcx = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCX);
ipcd = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCD);
if (ipcx & SHIM_BYT_IPCX_DONE) {
/* reply message from DSP, Mask Done interrupt first */
snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR,
SHIM_IMRX,
SHIM_IMRX_DONE,
SHIM_IMRX_DONE);
ret = IRQ_WAKE_THREAD;
}
if (ipcd & SHIM_BYT_IPCD_BUSY) {
/* new message from DSP, Mask Busy interrupt first */
snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR,
SHIM_IMRX,
SHIM_IMRX_BUSY,
SHIM_IMRX_BUSY);
ret = IRQ_WAKE_THREAD;
}
return ret;
}
EXPORT_SYMBOL_NS(atom_irq_handler, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
irqreturn_t atom_irq_thread(int irq, void *context)
{
struct snd_sof_dev *sdev = context;
u64 ipcx, ipcd;
ipcx = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCX);
ipcd = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCD);
/* reply message from DSP */
if (ipcx & SHIM_BYT_IPCX_DONE) {
spin_lock_irq(&sdev->ipc_lock);
/*
* handle immediate reply from DSP core. If the msg is
* found, set done bit in cmd_done which is called at the
* end of message processing function, else set it here
* because the done bit can't be set in cmd_done function
* which is triggered by msg
*/
snd_sof_ipc_process_reply(sdev, ipcx);
atom_dsp_done(sdev);
spin_unlock_irq(&sdev->ipc_lock);
}
/* new message from DSP */
if (ipcd & SHIM_BYT_IPCD_BUSY) {
/* Handle messages from DSP Core */
if ((ipcd & SOF_IPC_PANIC_MAGIC_MASK) == SOF_IPC_PANIC_MAGIC) {
snd_sof_dsp_panic(sdev, PANIC_OFFSET(ipcd) + MBOX_OFFSET,
true);
} else {
snd_sof_ipc_msgs_rx(sdev);
}
atom_host_done(sdev);
}
return IRQ_HANDLED;
}
EXPORT_SYMBOL_NS(atom_irq_thread, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
int atom_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
{
/* unmask and prepare to receive Done interrupt */
snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR, SHIM_IMRX,
SHIM_IMRX_DONE, 0);
/* send the message */
sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
msg->msg_size);
snd_sof_dsp_write64(sdev, DSP_BAR, SHIM_IPCX, SHIM_BYT_IPCX_BUSY);
return 0;
}
EXPORT_SYMBOL_NS(atom_send_msg, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
int atom_get_mailbox_offset(struct snd_sof_dev *sdev)
{
return MBOX_OFFSET;
}
EXPORT_SYMBOL_NS(atom_get_mailbox_offset, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
int atom_get_window_offset(struct snd_sof_dev *sdev, u32 id)
{
return MBOX_OFFSET;
}
EXPORT_SYMBOL_NS(atom_get_window_offset, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
static void atom_host_done(struct snd_sof_dev *sdev)
{
/* clear BUSY bit and set DONE bit - accept new messages */
snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR, SHIM_IPCD,
SHIM_BYT_IPCD_BUSY |
SHIM_BYT_IPCD_DONE,
SHIM_BYT_IPCD_DONE);
/* unmask and prepare to receive next new message */
snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR, SHIM_IMRX,
SHIM_IMRX_BUSY, 0);
}
static void atom_dsp_done(struct snd_sof_dev *sdev)
{
/* clear DONE bit - tell DSP we have completed */
snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR, SHIM_IPCX,
SHIM_BYT_IPCX_DONE, 0);
}
/*
* DSP control.
*/
int atom_run(struct snd_sof_dev *sdev)
{
int tries = 10;
/* release stall and wait to unstall */
snd_sof_dsp_update_bits64(sdev, DSP_BAR, SHIM_CSR,
SHIM_BYT_CSR_STALL, 0x0);
while (tries--) {
if (!(snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_CSR) &
SHIM_BYT_CSR_PWAITMODE))
break;
msleep(100);
}
if (tries < 0)
return -ENODEV;
/* return init core mask */
return 1;
}
EXPORT_SYMBOL_NS(atom_run, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
int atom_reset(struct snd_sof_dev *sdev)
{
/* put DSP into reset, set reset vector and stall */
snd_sof_dsp_update_bits64(sdev, DSP_BAR, SHIM_CSR,
SHIM_BYT_CSR_RST | SHIM_BYT_CSR_VECTOR_SEL |
SHIM_BYT_CSR_STALL,
SHIM_BYT_CSR_RST | SHIM_BYT_CSR_VECTOR_SEL |
SHIM_BYT_CSR_STALL);
usleep_range(10, 15);
/* take DSP out of reset and keep stalled for FW loading */
snd_sof_dsp_update_bits64(sdev, DSP_BAR, SHIM_CSR,
SHIM_BYT_CSR_RST, 0);
return 0;
}
EXPORT_SYMBOL_NS(atom_reset, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
static const char *fixup_tplg_name(struct snd_sof_dev *sdev,
const char *sof_tplg_filename,
const char *ssp_str)
{
const char *tplg_filename = NULL;
const char *split_ext;
char *filename, *tmp;
filename = kstrdup(sof_tplg_filename, GFP_KERNEL);
if (!filename)
return NULL;
/* this assumes a .tplg extension */
tmp = filename;
split_ext = strsep(&tmp, ".");
if (split_ext)
tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL,
"%s-%s.tplg",
split_ext, ssp_str);
kfree(filename);
return tplg_filename;
}
struct snd_soc_acpi_mach *atom_machine_select(struct snd_sof_dev *sdev)
{
struct snd_sof_pdata *sof_pdata = sdev->pdata;
const struct sof_dev_desc *desc = sof_pdata->desc;
struct snd_soc_acpi_mach *mach;
struct platform_device *pdev;
const char *tplg_filename;
mach = snd_soc_acpi_find_machine(desc->machines);
if (!mach) {
dev_warn(sdev->dev, "warning: No matching ASoC machine driver found\n");
return NULL;
}
pdev = to_platform_device(sdev->dev);
if (soc_intel_is_byt_cr(pdev)) {
dev_dbg(sdev->dev,
"BYT-CR detected, SSP0 used instead of SSP2\n");
tplg_filename = fixup_tplg_name(sdev,
mach->sof_tplg_filename,
"ssp0");
} else {
tplg_filename = mach->sof_tplg_filename;
}
if (!tplg_filename) {
dev_dbg(sdev->dev,
"error: no topology filename\n");
return NULL;
}
sof_pdata->tplg_filename = tplg_filename;
mach->mach_params.acpi_ipc_irq_index = desc->irqindex_host_ipc;
return mach;
}
EXPORT_SYMBOL_NS(atom_machine_select, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
/* Atom DAIs */
struct snd_soc_dai_driver atom_dai[] = {
{
.name = "ssp0-port",
.playback = {
.channels_min = 1,
.channels_max = 8,
},
.capture = {
.channels_min = 1,
.channels_max = 8,
},
},
{
.name = "ssp1-port",
.playback = {
.channels_min = 1,
.channels_max = 8,
},
.capture = {
.channels_min = 1,
.channels_max = 8,
},
},
{
.name = "ssp2-port",
.playback = {
.channels_min = 1,
.channels_max = 8,
},
.capture = {
.channels_min = 1,
.channels_max = 8,
}
},
{
.name = "ssp3-port",
.playback = {
.channels_min = 1,
.channels_max = 8,
},
.capture = {
.channels_min = 1,
.channels_max = 8,
},
},
{
.name = "ssp4-port",
.playback = {
.channels_min = 1,
.channels_max = 8,
},
.capture = {
.channels_min = 1,
.channels_max = 8,
},
},
{
.name = "ssp5-port",
.playback = {
.channels_min = 1,
.channels_max = 8,
},
.capture = {
.channels_min = 1,
.channels_max = 8,
},
},
};
EXPORT_SYMBOL_NS(atom_dai, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
void atom_set_mach_params(struct snd_soc_acpi_mach *mach,
struct snd_sof_dev *sdev)
{
struct snd_sof_pdata *pdata = sdev->pdata;
const struct sof_dev_desc *desc = pdata->desc;
struct snd_soc_acpi_mach_params *mach_params;
mach_params = &mach->mach_params;
mach_params->platform = dev_name(sdev->dev);
mach_params->num_dai_drivers = desc->ops->num_drv;
mach_params->dai_drivers = desc->ops->drv;
}
EXPORT_SYMBOL_NS(atom_set_mach_params, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("SOF support for Atom platforms");
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