blob: 440bca7afbf142874bf150a580eea27b91ae016b [file] [log] [blame]
/*
* bxt-sst.c - DSP library functions for BXT platform
*
* Copyright (C) 2015-16 Intel Corp
* Author:Rafal Redzimski <rafal.f.redzimski@intel.com>
* Jeeja KP <jeeja.kp@intel.com>
*
* 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; version 2 of the License.
*
* 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.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/device.h>
#include "../common/sst-dsp.h"
#include "../common/sst-dsp-priv.h"
#include "skl-sst-ipc.h"
#define BXT_BASEFW_TIMEOUT 3000
#define BXT_INIT_TIMEOUT 300
#define BXT_ROM_INIT_TIMEOUT 70
#define BXT_IPC_PURGE_FW 0x01004000
#define BXT_ROM_INIT 0x5
#define BXT_ADSP_SRAM0_BASE 0x80000
/* Firmware status window */
#define BXT_ADSP_FW_STATUS BXT_ADSP_SRAM0_BASE
#define BXT_ADSP_ERROR_CODE (BXT_ADSP_FW_STATUS + 0x4)
#define BXT_ADSP_SRAM1_BASE 0xA0000
#define BXT_INSTANCE_ID 0
#define BXT_BASE_FW_MODULE_ID 0
#define BXT_ADSP_FW_BIN_HDR_OFFSET 0x2000
/* Delay before scheduling D0i3 entry */
#define BXT_D0I3_DELAY 5000
#define BXT_FW_ROM_INIT_RETRY 3
static unsigned int bxt_get_errorcode(struct sst_dsp *ctx)
{
return sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE);
}
static int
bxt_load_library(struct sst_dsp *ctx, struct skl_lib_info *linfo, int lib_count)
{
struct snd_dma_buffer dmab;
struct skl_sst *skl = ctx->thread_context;
struct firmware stripped_fw;
int ret = 0, i, dma_id, stream_tag;
/* library indices start from 1 to N. 0 represents base FW */
for (i = 1; i < lib_count; i++) {
ret = skl_prepare_lib_load(skl, &skl->lib_info[i], &stripped_fw,
BXT_ADSP_FW_BIN_HDR_OFFSET, i);
if (ret < 0)
goto load_library_failed;
stream_tag = ctx->dsp_ops.prepare(ctx->dev, 0x40,
stripped_fw.size, &dmab);
if (stream_tag <= 0) {
dev_err(ctx->dev, "Lib prepare DMA err: %x\n",
stream_tag);
ret = stream_tag;
goto load_library_failed;
}
dma_id = stream_tag - 1;
memcpy(dmab.area, stripped_fw.data, stripped_fw.size);
ctx->dsp_ops.trigger(ctx->dev, true, stream_tag);
ret = skl_sst_ipc_load_library(&skl->ipc, dma_id, i, true);
if (ret < 0)
dev_err(ctx->dev, "IPC Load Lib for %s fail: %d\n",
linfo[i].name, ret);
ctx->dsp_ops.trigger(ctx->dev, false, stream_tag);
ctx->dsp_ops.cleanup(ctx->dev, &dmab, stream_tag);
}
return ret;
load_library_failed:
skl_release_library(linfo, lib_count);
return 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 sst_bxt_prepare_fw(struct sst_dsp *ctx,
const void *fwdata, u32 fwsize)
{
int stream_tag, ret;
stream_tag = ctx->dsp_ops.prepare(ctx->dev, 0x40, fwsize, &ctx->dmab);
if (stream_tag <= 0) {
dev_err(ctx->dev, "Failed to prepare DMA FW loading err: %x\n",
stream_tag);
return stream_tag;
}
ctx->dsp_ops.stream_tag = stream_tag;
memcpy(ctx->dmab.area, fwdata, fwsize);
/* Step 1: Power up core 0 and core1 */
ret = skl_dsp_core_power_up(ctx, SKL_DSP_CORE0_MASK |
SKL_DSP_CORE_MASK(1));
if (ret < 0) {
dev_err(ctx->dev, "dsp core0/1 power up failed\n");
goto base_fw_load_failed;
}
/* Step 2: Purge FW request */
sst_dsp_shim_write(ctx, SKL_ADSP_REG_HIPCI, SKL_ADSP_REG_HIPCI_BUSY |
(BXT_IPC_PURGE_FW | ((stream_tag - 1) << 9)));
/* Step 3: Unset core0 reset state & unstall/run core0 */
ret = skl_dsp_start_core(ctx, SKL_DSP_CORE0_MASK);
if (ret < 0) {
dev_err(ctx->dev, "Start dsp core failed ret: %d\n", ret);
ret = -EIO;
goto base_fw_load_failed;
}
/* Step 4: Wait for DONE Bit */
ret = sst_dsp_register_poll(ctx, SKL_ADSP_REG_HIPCIE,
SKL_ADSP_REG_HIPCIE_DONE,
SKL_ADSP_REG_HIPCIE_DONE,
BXT_INIT_TIMEOUT, "HIPCIE Done");
if (ret < 0) {
dev_err(ctx->dev, "Timeout for Purge Request%d\n", ret);
goto base_fw_load_failed;
}
/* Step 5: power down core1 */
ret = skl_dsp_core_power_down(ctx, SKL_DSP_CORE_MASK(1));
if (ret < 0) {
dev_err(ctx->dev, "dsp core1 power down failed\n");
goto base_fw_load_failed;
}
/* Step 6: Enable Interrupt */
skl_ipc_int_enable(ctx);
skl_ipc_op_int_enable(ctx);
/* Step 7: Wait for ROM init */
ret = sst_dsp_register_poll(ctx, BXT_ADSP_FW_STATUS, SKL_FW_STS_MASK,
SKL_FW_INIT, BXT_ROM_INIT_TIMEOUT, "ROM Load");
if (ret < 0) {
dev_err(ctx->dev, "Timeout for ROM init, ret:%d\n", ret);
goto base_fw_load_failed;
}
return ret;
base_fw_load_failed:
ctx->dsp_ops.cleanup(ctx->dev, &ctx->dmab, stream_tag);
skl_dsp_core_power_down(ctx, SKL_DSP_CORE_MASK(1));
skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK);
return ret;
}
static int sst_transfer_fw_host_dma(struct sst_dsp *ctx)
{
int ret;
ctx->dsp_ops.trigger(ctx->dev, true, ctx->dsp_ops.stream_tag);
ret = sst_dsp_register_poll(ctx, BXT_ADSP_FW_STATUS, SKL_FW_STS_MASK,
BXT_ROM_INIT, BXT_BASEFW_TIMEOUT, "Firmware boot");
ctx->dsp_ops.trigger(ctx->dev, false, ctx->dsp_ops.stream_tag);
ctx->dsp_ops.cleanup(ctx->dev, &ctx->dmab, ctx->dsp_ops.stream_tag);
return ret;
}
static int bxt_load_base_firmware(struct sst_dsp *ctx)
{
struct firmware stripped_fw;
struct skl_sst *skl = ctx->thread_context;
int ret, i;
if (ctx->fw == NULL) {
ret = request_firmware(&ctx->fw, ctx->fw_name, ctx->dev);
if (ret < 0) {
dev_err(ctx->dev, "Request firmware failed %d\n", ret);
return ret;
}
}
/* prase uuids on first boot */
if (skl->is_first_boot) {
ret = snd_skl_parse_uuids(ctx, ctx->fw, BXT_ADSP_FW_BIN_HDR_OFFSET, 0);
if (ret < 0)
goto sst_load_base_firmware_failed;
}
stripped_fw.data = ctx->fw->data;
stripped_fw.size = ctx->fw->size;
skl_dsp_strip_extended_manifest(&stripped_fw);
for (i = 0; i < BXT_FW_ROM_INIT_RETRY; i++) {
ret = sst_bxt_prepare_fw(ctx, stripped_fw.data, stripped_fw.size);
if (ret == 0)
break;
}
if (ret < 0) {
dev_err(ctx->dev, "Error code=0x%x: FW status=0x%x\n",
sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE),
sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS));
dev_err(ctx->dev, "Core En/ROM load fail:%d\n", ret);
goto sst_load_base_firmware_failed;
}
ret = sst_transfer_fw_host_dma(ctx);
if (ret < 0) {
dev_err(ctx->dev, "Transfer firmware failed %d\n", ret);
dev_info(ctx->dev, "Error code=0x%x: FW status=0x%x\n",
sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE),
sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS));
skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK);
} else {
dev_dbg(ctx->dev, "Firmware download successful\n");
ret = wait_event_timeout(skl->boot_wait, skl->boot_complete,
msecs_to_jiffies(SKL_IPC_BOOT_MSECS));
if (ret == 0) {
dev_err(ctx->dev, "DSP boot fail, FW Ready timeout\n");
skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK);
ret = -EIO;
} else {
ret = 0;
skl->fw_loaded = true;
}
}
return ret;
sst_load_base_firmware_failed:
release_firmware(ctx->fw);
ctx->fw = NULL;
return ret;
}
/*
* Decide the D0i3 state that can be targeted based on the usecase
* ref counts and DSP state
*
* Decision Matrix: (X= dont care; state = target state)
*
* DSP state != SKL_DSP_RUNNING ; state = no d0i3
*
* DSP state == SKL_DSP_RUNNING , the following matrix applies
* non_d0i3 >0; streaming =X; non_streaming =X; state = no d0i3
* non_d0i3 =X; streaming =0; non_streaming =0; state = no d0i3
* non_d0i3 =0; streaming >0; non_streaming =X; state = streaming d0i3
* non_d0i3 =0; streaming =0; non_streaming =X; state = non-streaming d0i3
*/
static int bxt_d0i3_target_state(struct sst_dsp *ctx)
{
struct skl_sst *skl = ctx->thread_context;
struct skl_d0i3_data *d0i3 = &skl->d0i3;
if (skl->cores.state[SKL_DSP_CORE0_ID] != SKL_DSP_RUNNING)
return SKL_DSP_D0I3_NONE;
if (d0i3->non_d0i3)
return SKL_DSP_D0I3_NONE;
else if (d0i3->streaming)
return SKL_DSP_D0I3_STREAMING;
else if (d0i3->non_streaming)
return SKL_DSP_D0I3_NON_STREAMING;
else
return SKL_DSP_D0I3_NONE;
}
static void bxt_set_dsp_D0i3(struct work_struct *work)
{
int ret;
struct skl_ipc_d0ix_msg msg;
struct skl_sst *skl = container_of(work,
struct skl_sst, d0i3.work.work);
struct sst_dsp *ctx = skl->dsp;
struct skl_d0i3_data *d0i3 = &skl->d0i3;
int target_state;
dev_dbg(ctx->dev, "In %s:\n", __func__);
/* D0i3 entry allowed only if core 0 alone is running */
if (skl_dsp_get_enabled_cores(ctx) != SKL_DSP_CORE0_MASK) {
dev_warn(ctx->dev,
"D0i3 allowed when only core0 running:Exit\n");
return;
}
target_state = bxt_d0i3_target_state(ctx);
if (target_state == SKL_DSP_D0I3_NONE)
return;
msg.instance_id = 0;
msg.module_id = 0;
msg.wake = 1;
msg.streaming = 0;
if (target_state == SKL_DSP_D0I3_STREAMING)
msg.streaming = 1;
ret = skl_ipc_set_d0ix(&skl->ipc, &msg);
if (ret < 0) {
dev_err(ctx->dev, "Failed to set DSP to D0i3 state\n");
return;
}
/* Set Vendor specific register D0I3C.I3 to enable D0i3*/
if (skl->update_d0i3c)
skl->update_d0i3c(skl->dev, true);
d0i3->state = target_state;
skl->cores.state[SKL_DSP_CORE0_ID] = SKL_DSP_RUNNING_D0I3;
}
static int bxt_schedule_dsp_D0i3(struct sst_dsp *ctx)
{
struct skl_sst *skl = ctx->thread_context;
struct skl_d0i3_data *d0i3 = &skl->d0i3;
/* Schedule D0i3 only if the usecase ref counts are appropriate */
if (bxt_d0i3_target_state(ctx) != SKL_DSP_D0I3_NONE) {
dev_dbg(ctx->dev, "%s: Schedule D0i3\n", __func__);
schedule_delayed_work(&d0i3->work,
msecs_to_jiffies(BXT_D0I3_DELAY));
}
return 0;
}
static int bxt_set_dsp_D0i0(struct sst_dsp *ctx)
{
int ret;
struct skl_ipc_d0ix_msg msg;
struct skl_sst *skl = ctx->thread_context;
dev_dbg(ctx->dev, "In %s:\n", __func__);
/* First Cancel any pending attempt to put DSP to D0i3 */
cancel_delayed_work_sync(&skl->d0i3.work);
/* If DSP is currently in D0i3, bring it to D0i0 */
if (skl->cores.state[SKL_DSP_CORE0_ID] != SKL_DSP_RUNNING_D0I3)
return 0;
dev_dbg(ctx->dev, "Set DSP to D0i0\n");
msg.instance_id = 0;
msg.module_id = 0;
msg.streaming = 0;
msg.wake = 0;
if (skl->d0i3.state == SKL_DSP_D0I3_STREAMING)
msg.streaming = 1;
/* Clear Vendor specific register D0I3C.I3 to disable D0i3*/
if (skl->update_d0i3c)
skl->update_d0i3c(skl->dev, false);
ret = skl_ipc_set_d0ix(&skl->ipc, &msg);
if (ret < 0) {
dev_err(ctx->dev, "Failed to set DSP to D0i0\n");
return ret;
}
skl->cores.state[SKL_DSP_CORE0_ID] = SKL_DSP_RUNNING;
skl->d0i3.state = SKL_DSP_D0I3_NONE;
return 0;
}
static int bxt_set_dsp_D0(struct sst_dsp *ctx, unsigned int core_id)
{
struct skl_sst *skl = ctx->thread_context;
int ret;
struct skl_ipc_dxstate_info dx;
unsigned int core_mask = SKL_DSP_CORE_MASK(core_id);
if (skl->fw_loaded == false) {
skl->boot_complete = false;
ret = bxt_load_base_firmware(ctx);
if (ret < 0) {
dev_err(ctx->dev, "reload fw failed: %d\n", ret);
return ret;
}
if (skl->lib_count > 1) {
ret = bxt_load_library(ctx, skl->lib_info,
skl->lib_count);
if (ret < 0) {
dev_err(ctx->dev, "reload libs failed: %d\n", ret);
return ret;
}
}
skl->cores.state[core_id] = SKL_DSP_RUNNING;
return ret;
}
/* If core 0 is being turned on, turn on core 1 as well */
if (core_id == SKL_DSP_CORE0_ID)
ret = skl_dsp_core_power_up(ctx, core_mask |
SKL_DSP_CORE_MASK(1));
else
ret = skl_dsp_core_power_up(ctx, core_mask);
if (ret < 0)
goto err;
if (core_id == SKL_DSP_CORE0_ID) {
/*
* Enable interrupt after SPA is set and before
* DSP is unstalled
*/
skl_ipc_int_enable(ctx);
skl_ipc_op_int_enable(ctx);
skl->boot_complete = false;
}
ret = skl_dsp_start_core(ctx, core_mask);
if (ret < 0)
goto err;
if (core_id == SKL_DSP_CORE0_ID) {
ret = wait_event_timeout(skl->boot_wait,
skl->boot_complete,
msecs_to_jiffies(SKL_IPC_BOOT_MSECS));
/* If core 1 was turned on for booting core 0, turn it off */
skl_dsp_core_power_down(ctx, SKL_DSP_CORE_MASK(1));
if (ret == 0) {
dev_err(ctx->dev, "%s: DSP boot timeout\n", __func__);
dev_err(ctx->dev, "Error code=0x%x: FW status=0x%x\n",
sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE),
sst_dsp_shim_read(ctx, BXT_ADSP_FW_STATUS));
dev_err(ctx->dev, "Failed to set core0 to D0 state\n");
ret = -EIO;
goto err;
}
}
/* Tell FW if additional core in now On */
if (core_id != SKL_DSP_CORE0_ID) {
dx.core_mask = core_mask;
dx.dx_mask = core_mask;
ret = skl_ipc_set_dx(&skl->ipc, BXT_INSTANCE_ID,
BXT_BASE_FW_MODULE_ID, &dx);
if (ret < 0) {
dev_err(ctx->dev, "IPC set_dx for core %d fail: %d\n",
core_id, ret);
goto err;
}
}
skl->cores.state[core_id] = SKL_DSP_RUNNING;
return 0;
err:
if (core_id == SKL_DSP_CORE0_ID)
core_mask |= SKL_DSP_CORE_MASK(1);
skl_dsp_disable_core(ctx, core_mask);
return ret;
}
static int bxt_set_dsp_D3(struct sst_dsp *ctx, unsigned int core_id)
{
int ret;
struct skl_ipc_dxstate_info dx;
struct skl_sst *skl = ctx->thread_context;
unsigned int core_mask = SKL_DSP_CORE_MASK(core_id);
dx.core_mask = core_mask;
dx.dx_mask = SKL_IPC_D3_MASK;
dev_dbg(ctx->dev, "core mask=%x dx_mask=%x\n",
dx.core_mask, dx.dx_mask);
ret = skl_ipc_set_dx(&skl->ipc, BXT_INSTANCE_ID,
BXT_BASE_FW_MODULE_ID, &dx);
if (ret < 0) {
dev_err(ctx->dev,
"Failed to set DSP to D3:core id = %d;Continue reset\n",
core_id);
/*
* In case of D3 failure, re-download the firmware, so set
* fw_loaded to false.
*/
skl->fw_loaded = false;
}
if (core_id == SKL_DSP_CORE0_ID) {
/* disable Interrupt */
skl_ipc_op_int_disable(ctx);
skl_ipc_int_disable(ctx);
}
ret = skl_dsp_disable_core(ctx, core_mask);
if (ret < 0) {
dev_err(ctx->dev, "Failed to disable core %d\n", ret);
return ret;
}
skl->cores.state[core_id] = SKL_DSP_RESET;
return 0;
}
static const struct skl_dsp_fw_ops bxt_fw_ops = {
.set_state_D0 = bxt_set_dsp_D0,
.set_state_D3 = bxt_set_dsp_D3,
.set_state_D0i3 = bxt_schedule_dsp_D0i3,
.set_state_D0i0 = bxt_set_dsp_D0i0,
.load_fw = bxt_load_base_firmware,
.get_fw_errcode = bxt_get_errorcode,
.load_library = bxt_load_library,
};
static struct sst_ops skl_ops = {
.irq_handler = skl_dsp_sst_interrupt,
.write = sst_shim32_write,
.read = sst_shim32_read,
.ram_read = sst_memcpy_fromio_32,
.ram_write = sst_memcpy_toio_32,
.free = skl_dsp_free,
};
static struct sst_dsp_device skl_dev = {
.thread = skl_dsp_irq_thread_handler,
.ops = &skl_ops,
};
int bxt_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
const char *fw_name, struct skl_dsp_loader_ops dsp_ops,
struct skl_sst **dsp)
{
struct skl_sst *skl;
struct sst_dsp *sst;
int ret;
ret = skl_sst_ctx_init(dev, irq, fw_name, dsp_ops, dsp, &skl_dev);
if (ret < 0) {
dev_err(dev, "%s: no device\n", __func__);
return ret;
}
skl = *dsp;
sst = skl->dsp;
sst->fw_ops = bxt_fw_ops;
sst->addr.lpe = mmio_base;
sst->addr.shim = mmio_base;
sst->addr.sram0_base = BXT_ADSP_SRAM0_BASE;
sst->addr.sram1_base = BXT_ADSP_SRAM1_BASE;
sst->addr.w0_stat_sz = SKL_ADSP_W0_STAT_SZ;
sst->addr.w0_up_sz = SKL_ADSP_W0_UP_SZ;
sst_dsp_mailbox_init(sst, (BXT_ADSP_SRAM0_BASE + SKL_ADSP_W0_STAT_SZ),
SKL_ADSP_W0_UP_SZ, BXT_ADSP_SRAM1_BASE, SKL_ADSP_W1_SZ);
ret = skl_ipc_init(dev, skl);
if (ret) {
skl_dsp_free(sst);
return ret;
}
/* set the D0i3 check */
skl->ipc.ops.check_dsp_lp_on = skl_ipc_check_D0i0;
skl->boot_complete = false;
init_waitqueue_head(&skl->boot_wait);
INIT_DELAYED_WORK(&skl->d0i3.work, bxt_set_dsp_D0i3);
skl->d0i3.state = SKL_DSP_D0I3_NONE;
return skl_dsp_acquire_irq(sst);
}
EXPORT_SYMBOL_GPL(bxt_sst_dsp_init);
int bxt_sst_init_fw(struct device *dev, struct skl_sst *ctx)
{
int ret;
struct sst_dsp *sst = ctx->dsp;
ret = sst->fw_ops.load_fw(sst);
if (ret < 0) {
dev_err(dev, "Load base fw failed: %x\n", ret);
return ret;
}
skl_dsp_init_core_state(sst);
if (ctx->lib_count > 1) {
ret = sst->fw_ops.load_library(sst, ctx->lib_info,
ctx->lib_count);
if (ret < 0) {
dev_err(dev, "Load Library failed : %x\n", ret);
return ret;
}
}
ctx->is_first_boot = false;
return 0;
}
EXPORT_SYMBOL_GPL(bxt_sst_init_fw);
void bxt_sst_dsp_cleanup(struct device *dev, struct skl_sst *ctx)
{
skl_release_library(ctx->lib_info, ctx->lib_count);
if (ctx->dsp->fw)
release_firmware(ctx->dsp->fw);
skl_freeup_uuid_list(ctx);
skl_ipc_free(&ctx->ipc);
ctx->dsp->ops->free(ctx->dsp);
}
EXPORT_SYMBOL_GPL(bxt_sst_dsp_cleanup);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel Broxton IPC driver");