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-rw-r--r--sound/soc/sof/intel/hda-stream.c1099
1 files changed, 1099 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/hda-stream.c b/sound/soc/sof/intel/hda-stream.c
new file mode 100644
index 000000000..be60e7785
--- /dev/null
+++ b/sound/soc/sof/intel/hda-stream.c
@@ -0,0 +1,1099 @@
+// 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 generic Intel audio DSP HDA IP
+ */
+
+#include <linux/pm_runtime.h>
+#include <sound/hdaudio_ext.h>
+#include <sound/hda_register.h>
+#include <sound/sof.h>
+#include <trace/events/sof_intel.h>
+#include "../ops.h"
+#include "../sof-audio.h"
+#include "hda.h"
+
+#define HDA_LTRP_GB_VALUE_US 95
+
+static inline const char *hda_hstream_direction_str(struct hdac_stream *hstream)
+{
+ if (hstream->direction == SNDRV_PCM_STREAM_PLAYBACK)
+ return "Playback";
+ else
+ return "Capture";
+}
+
+static char *hda_hstream_dbg_get_stream_info_str(struct hdac_stream *hstream)
+{
+ struct snd_soc_pcm_runtime *rtd;
+
+ if (hstream->substream)
+ rtd = asoc_substream_to_rtd(hstream->substream);
+ else if (hstream->cstream)
+ rtd = hstream->cstream->private_data;
+ else
+ /* Non audio DMA user, like dma-trace */
+ return kasprintf(GFP_KERNEL, "-- (%s, stream_tag: %u)",
+ hda_hstream_direction_str(hstream),
+ hstream->stream_tag);
+
+ return kasprintf(GFP_KERNEL, "dai_link \"%s\" (%s, stream_tag: %u)",
+ rtd->dai_link->name, hda_hstream_direction_str(hstream),
+ hstream->stream_tag);
+}
+
+/*
+ * set up one of BDL entries for a stream
+ */
+static int hda_setup_bdle(struct snd_sof_dev *sdev,
+ struct snd_dma_buffer *dmab,
+ struct hdac_stream *hstream,
+ struct sof_intel_dsp_bdl **bdlp,
+ int offset, int size, int ioc)
+{
+ struct hdac_bus *bus = sof_to_bus(sdev);
+ struct sof_intel_dsp_bdl *bdl = *bdlp;
+
+ while (size > 0) {
+ dma_addr_t addr;
+ int chunk;
+
+ if (hstream->frags >= HDA_DSP_MAX_BDL_ENTRIES) {
+ dev_err(sdev->dev, "error: stream frags exceeded\n");
+ return -EINVAL;
+ }
+
+ addr = snd_sgbuf_get_addr(dmab, offset);
+ /* program BDL addr */
+ bdl->addr_l = cpu_to_le32(lower_32_bits(addr));
+ bdl->addr_h = cpu_to_le32(upper_32_bits(addr));
+ /* program BDL size */
+ chunk = snd_sgbuf_get_chunk_size(dmab, offset, size);
+ /* one BDLE should not cross 4K boundary */
+ if (bus->align_bdle_4k) {
+ u32 remain = 0x1000 - (offset & 0xfff);
+
+ if (chunk > remain)
+ chunk = remain;
+ }
+ bdl->size = cpu_to_le32(chunk);
+ /* only program IOC when the whole segment is processed */
+ size -= chunk;
+ bdl->ioc = (size || !ioc) ? 0 : cpu_to_le32(0x01);
+ bdl++;
+ hstream->frags++;
+ offset += chunk;
+ }
+
+ *bdlp = bdl;
+ return offset;
+}
+
+/*
+ * set up Buffer Descriptor List (BDL) for host memory transfer
+ * BDL describes the location of the individual buffers and is little endian.
+ */
+int hda_dsp_stream_setup_bdl(struct snd_sof_dev *sdev,
+ struct snd_dma_buffer *dmab,
+ struct hdac_stream *hstream)
+{
+ struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
+ struct sof_intel_dsp_bdl *bdl;
+ int i, offset, period_bytes, periods;
+ int remain, ioc;
+
+ period_bytes = hstream->period_bytes;
+ dev_dbg(sdev->dev, "period_bytes:0x%x\n", period_bytes);
+ if (!period_bytes)
+ period_bytes = hstream->bufsize;
+
+ periods = hstream->bufsize / period_bytes;
+
+ dev_dbg(sdev->dev, "periods:%d\n", periods);
+
+ remain = hstream->bufsize % period_bytes;
+ if (remain)
+ periods++;
+
+ /* program the initial BDL entries */
+ bdl = (struct sof_intel_dsp_bdl *)hstream->bdl.area;
+ offset = 0;
+ hstream->frags = 0;
+
+ /*
+ * set IOC if don't use position IPC
+ * and period_wakeup needed.
+ */
+ ioc = hda->no_ipc_position ?
+ !hstream->no_period_wakeup : 0;
+
+ for (i = 0; i < periods; i++) {
+ if (i == (periods - 1) && remain)
+ /* set the last small entry */
+ offset = hda_setup_bdle(sdev, dmab,
+ hstream, &bdl, offset,
+ remain, 0);
+ else
+ offset = hda_setup_bdle(sdev, dmab,
+ hstream, &bdl, offset,
+ period_bytes, ioc);
+ }
+
+ return offset;
+}
+
+int hda_dsp_stream_spib_config(struct snd_sof_dev *sdev,
+ struct hdac_ext_stream *hext_stream,
+ int enable, u32 size)
+{
+ struct hdac_stream *hstream = &hext_stream->hstream;
+ u32 mask;
+
+ if (!sdev->bar[HDA_DSP_SPIB_BAR]) {
+ dev_err(sdev->dev, "error: address of spib capability is NULL\n");
+ return -EINVAL;
+ }
+
+ mask = (1 << hstream->index);
+
+ /* enable/disable SPIB for the stream */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_SPIB_BAR,
+ SOF_HDA_ADSP_REG_CL_SPBFIFO_SPBFCCTL, mask,
+ enable << hstream->index);
+
+ /* set the SPIB value */
+ sof_io_write(sdev, hext_stream->spib_addr, size);
+
+ return 0;
+}
+
+/* get next unused stream */
+struct hdac_ext_stream *
+hda_dsp_stream_get(struct snd_sof_dev *sdev, int direction, u32 flags)
+{
+ struct hdac_bus *bus = sof_to_bus(sdev);
+ struct sof_intel_hda_stream *hda_stream;
+ struct hdac_ext_stream *hext_stream = NULL;
+ struct hdac_stream *s;
+
+ spin_lock_irq(&bus->reg_lock);
+
+ /* get an unused stream */
+ list_for_each_entry(s, &bus->stream_list, list) {
+ if (s->direction == direction && !s->opened) {
+ hext_stream = stream_to_hdac_ext_stream(s);
+ hda_stream = container_of(hext_stream,
+ struct sof_intel_hda_stream,
+ hext_stream);
+ /* check if the host DMA channel is reserved */
+ if (hda_stream->host_reserved)
+ continue;
+
+ s->opened = true;
+ break;
+ }
+ }
+
+ spin_unlock_irq(&bus->reg_lock);
+
+ /* stream found ? */
+ if (!hext_stream) {
+ dev_err(sdev->dev, "error: no free %s streams\n",
+ direction == SNDRV_PCM_STREAM_PLAYBACK ?
+ "playback" : "capture");
+ return hext_stream;
+ }
+
+ hda_stream->flags = flags;
+
+ /*
+ * Prevent DMI Link L1 entry for streams that don't support it.
+ * Workaround to address a known issue with host DMA that results
+ * in xruns during pause/release in capture scenarios.
+ */
+ if (!(flags & SOF_HDA_STREAM_DMI_L1_COMPATIBLE))
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
+ HDA_VS_INTEL_EM2,
+ HDA_VS_INTEL_EM2_L1SEN, 0);
+
+ return hext_stream;
+}
+
+/* free a stream */
+int hda_dsp_stream_put(struct snd_sof_dev *sdev, int direction, int stream_tag)
+{
+ struct hdac_bus *bus = sof_to_bus(sdev);
+ struct sof_intel_hda_stream *hda_stream;
+ struct hdac_ext_stream *hext_stream;
+ struct hdac_stream *s;
+ bool dmi_l1_enable = true;
+ bool found = false;
+
+ spin_lock_irq(&bus->reg_lock);
+
+ /*
+ * close stream matching the stream tag and check if there are any open streams
+ * that are DMI L1 incompatible.
+ */
+ list_for_each_entry(s, &bus->stream_list, list) {
+ hext_stream = stream_to_hdac_ext_stream(s);
+ hda_stream = container_of(hext_stream, struct sof_intel_hda_stream, hext_stream);
+
+ if (!s->opened)
+ continue;
+
+ if (s->direction == direction && s->stream_tag == stream_tag) {
+ s->opened = false;
+ found = true;
+ } else if (!(hda_stream->flags & SOF_HDA_STREAM_DMI_L1_COMPATIBLE)) {
+ dmi_l1_enable = false;
+ }
+ }
+
+ spin_unlock_irq(&bus->reg_lock);
+
+ /* Enable DMI L1 if permitted */
+ if (dmi_l1_enable)
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, HDA_VS_INTEL_EM2,
+ HDA_VS_INTEL_EM2_L1SEN, HDA_VS_INTEL_EM2_L1SEN);
+
+ if (!found) {
+ dev_err(sdev->dev, "%s: stream_tag %d not opened!\n",
+ __func__, stream_tag);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int hda_dsp_stream_reset(struct snd_sof_dev *sdev, struct hdac_stream *hstream)
+{
+ int sd_offset = SOF_STREAM_SD_OFFSET(hstream);
+ int timeout = HDA_DSP_STREAM_RESET_TIMEOUT;
+ u32 val;
+
+ /* enter stream reset */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, sd_offset, SOF_STREAM_SD_OFFSET_CRST,
+ SOF_STREAM_SD_OFFSET_CRST);
+ do {
+ val = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR, sd_offset);
+ if (val & SOF_STREAM_SD_OFFSET_CRST)
+ break;
+ } while (--timeout);
+ if (timeout == 0) {
+ dev_err(sdev->dev, "timeout waiting for stream reset\n");
+ return -ETIMEDOUT;
+ }
+
+ timeout = HDA_DSP_STREAM_RESET_TIMEOUT;
+
+ /* exit stream reset and wait to read a zero before reading any other register */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, sd_offset, SOF_STREAM_SD_OFFSET_CRST, 0x0);
+
+ /* wait for hardware to report that stream is out of reset */
+ udelay(3);
+ do {
+ val = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR, sd_offset);
+ if ((val & SOF_STREAM_SD_OFFSET_CRST) == 0)
+ break;
+ } while (--timeout);
+ if (timeout == 0) {
+ dev_err(sdev->dev, "timeout waiting for stream to exit reset\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+int hda_dsp_stream_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);
+ u32 dma_start = SOF_HDA_SD_CTL_DMA_START;
+ int ret = 0;
+ u32 run;
+
+ /* cmd must be for audio stream */
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ 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);
+
+ ret = snd_sof_dsp_read_poll_timeout(sdev,
+ HDA_DSP_HDA_BAR,
+ sd_offset, run,
+ ((run & dma_start) == dma_start),
+ HDA_DSP_REG_POLL_INTERVAL_US,
+ HDA_DSP_STREAM_RUN_TIMEOUT);
+
+ if (ret >= 0)
+ hstream->running = true;
+
+ break;
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_STOP:
+ 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, 0x0);
+
+ ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_HDA_BAR,
+ sd_offset, run,
+ !(run & dma_start),
+ HDA_DSP_REG_POLL_INTERVAL_US,
+ HDA_DSP_STREAM_RUN_TIMEOUT);
+
+ if (ret >= 0) {
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_STS,
+ SOF_HDA_CL_DMA_SD_INT_MASK);
+
+ hstream->running = false;
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
+ SOF_HDA_INTCTL,
+ 1 << hstream->index, 0x0);
+ }
+ break;
+ default:
+ dev_err(sdev->dev, "error: unknown command: %d\n", cmd);
+ return -EINVAL;
+ }
+
+ if (ret < 0) {
+ char *stream_name = hda_hstream_dbg_get_stream_info_str(hstream);
+
+ dev_err(sdev->dev,
+ "%s: cmd %d on %s: timeout on STREAM_SD_OFFSET read\n",
+ __func__, cmd, stream_name ? stream_name : "unknown stream");
+ kfree(stream_name);
+ }
+
+ return ret;
+}
+
+/* minimal recommended programming for ICCMAX stream */
+int hda_dsp_iccmax_stream_hw_params(struct snd_sof_dev *sdev, struct hdac_ext_stream *hext_stream,
+ struct snd_dma_buffer *dmab,
+ struct snd_pcm_hw_params *params)
+{
+ struct hdac_bus *bus = sof_to_bus(sdev);
+ struct hdac_stream *hstream = &hext_stream->hstream;
+ int sd_offset = SOF_STREAM_SD_OFFSET(hstream);
+ int ret;
+ u32 mask = 0x1 << hstream->index;
+
+ if (!hext_stream) {
+ dev_err(sdev->dev, "error: no stream available\n");
+ return -ENODEV;
+ }
+
+ if (!dmab) {
+ dev_err(sdev->dev, "error: no dma buffer allocated!\n");
+ return -ENODEV;
+ }
+
+ if (hstream->posbuf)
+ *hstream->posbuf = 0;
+
+ /* reset BDL address */
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPL,
+ 0x0);
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPU,
+ 0x0);
+
+ hstream->frags = 0;
+
+ ret = hda_dsp_stream_setup_bdl(sdev, dmab, hstream);
+ if (ret < 0) {
+ dev_err(sdev->dev, "error: set up of BDL failed\n");
+ return ret;
+ }
+
+ /* program BDL address */
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPL,
+ (u32)hstream->bdl.addr);
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPU,
+ upper_32_bits(hstream->bdl.addr));
+
+ /* program cyclic buffer length */
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_CBL,
+ hstream->bufsize);
+
+ /* program last valid index */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_LVI,
+ 0xffff, (hstream->frags - 1));
+
+ /* decouple host and link DMA, enable DSP features */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
+ mask, mask);
+
+ /* Follow HW recommendation to set the guardband value to 95us during FW boot */
+ snd_hdac_chip_updateb(bus, VS_LTRP, HDA_VS_INTEL_LTRP_GB_MASK, HDA_LTRP_GB_VALUE_US);
+
+ /* start DMA */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, sd_offset,
+ SOF_HDA_SD_CTL_DMA_START, SOF_HDA_SD_CTL_DMA_START);
+
+ return 0;
+}
+
+/*
+ * prepare for common hdac registers settings, for both code loader
+ * and normal stream.
+ */
+int hda_dsp_stream_hw_params(struct snd_sof_dev *sdev,
+ struct hdac_ext_stream *hext_stream,
+ struct snd_dma_buffer *dmab,
+ struct snd_pcm_hw_params *params)
+{
+ const struct sof_intel_dsp_desc *chip = get_chip_info(sdev->pdata);
+ struct hdac_bus *bus = sof_to_bus(sdev);
+ struct hdac_stream *hstream = &hext_stream->hstream;
+ int sd_offset = SOF_STREAM_SD_OFFSET(hstream);
+ int ret;
+ u32 dma_start = SOF_HDA_SD_CTL_DMA_START;
+ u32 mask;
+ u32 run;
+
+ if (!hext_stream) {
+ dev_err(sdev->dev, "error: no stream available\n");
+ return -ENODEV;
+ }
+
+ if (!dmab) {
+ dev_err(sdev->dev, "error: no dma buffer allocated!\n");
+ return -ENODEV;
+ }
+
+ /* decouple host and link DMA */
+ mask = 0x1 << hstream->index;
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
+ mask, mask);
+
+ /* clear stream status */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, sd_offset,
+ SOF_HDA_CL_DMA_SD_INT_MASK |
+ SOF_HDA_SD_CTL_DMA_START, 0);
+
+ ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_HDA_BAR,
+ sd_offset, run,
+ !(run & dma_start),
+ HDA_DSP_REG_POLL_INTERVAL_US,
+ HDA_DSP_STREAM_RUN_TIMEOUT);
+
+ if (ret < 0) {
+ char *stream_name = hda_hstream_dbg_get_stream_info_str(hstream);
+
+ dev_err(sdev->dev,
+ "%s: on %s: timeout on STREAM_SD_OFFSET read1\n",
+ __func__, stream_name ? stream_name : "unknown stream");
+ kfree(stream_name);
+ return ret;
+ }
+
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_STS,
+ SOF_HDA_CL_DMA_SD_INT_MASK,
+ SOF_HDA_CL_DMA_SD_INT_MASK);
+
+ /* stream reset */
+ ret = hda_dsp_stream_reset(sdev, hstream);
+ if (ret < 0)
+ return ret;
+
+ if (hstream->posbuf)
+ *hstream->posbuf = 0;
+
+ /* reset BDL address */
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPL,
+ 0x0);
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPU,
+ 0x0);
+
+ /* clear stream status */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, sd_offset,
+ SOF_HDA_CL_DMA_SD_INT_MASK |
+ SOF_HDA_SD_CTL_DMA_START, 0);
+
+ ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_HDA_BAR,
+ sd_offset, run,
+ !(run & dma_start),
+ HDA_DSP_REG_POLL_INTERVAL_US,
+ HDA_DSP_STREAM_RUN_TIMEOUT);
+
+ if (ret < 0) {
+ char *stream_name = hda_hstream_dbg_get_stream_info_str(hstream);
+
+ dev_err(sdev->dev,
+ "%s: on %s: timeout on STREAM_SD_OFFSET read1\n",
+ __func__, stream_name ? stream_name : "unknown stream");
+ kfree(stream_name);
+ return ret;
+ }
+
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_STS,
+ SOF_HDA_CL_DMA_SD_INT_MASK,
+ SOF_HDA_CL_DMA_SD_INT_MASK);
+
+ hstream->frags = 0;
+
+ ret = hda_dsp_stream_setup_bdl(sdev, dmab, hstream);
+ if (ret < 0) {
+ dev_err(sdev->dev, "error: set up of BDL failed\n");
+ return ret;
+ }
+
+ /* program stream tag to set up stream descriptor for DMA */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, sd_offset,
+ SOF_HDA_CL_SD_CTL_STREAM_TAG_MASK,
+ hstream->stream_tag <<
+ SOF_HDA_CL_SD_CTL_STREAM_TAG_SHIFT);
+
+ /* program cyclic buffer length */
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_CBL,
+ hstream->bufsize);
+
+ /*
+ * Recommended hardware programming sequence for HDAudio DMA format
+ * on earlier platforms - this is not needed on newer platforms
+ *
+ * 1. Put DMA into coupled mode by clearing PPCTL.PROCEN bit
+ * for corresponding stream index before the time of writing
+ * format to SDxFMT register.
+ * 2. Write SDxFMT
+ * 3. Set PPCTL.PROCEN bit for corresponding stream index to
+ * enable decoupled mode
+ */
+
+ if (chip->quirks & SOF_INTEL_PROCEN_FMT_QUIRK) {
+ /* couple host and link DMA, disable DSP features */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
+ mask, 0);
+ }
+
+ /* program stream format */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
+ sd_offset +
+ SOF_HDA_ADSP_REG_CL_SD_FORMAT,
+ 0xffff, hstream->format_val);
+
+ if (chip->quirks & SOF_INTEL_PROCEN_FMT_QUIRK) {
+ /* decouple host and link DMA, enable DSP features */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL,
+ mask, mask);
+ }
+
+ /* program last valid index */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_LVI,
+ 0xffff, (hstream->frags - 1));
+
+ /* program BDL address */
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPL,
+ (u32)hstream->bdl.addr);
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR,
+ sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPU,
+ upper_32_bits(hstream->bdl.addr));
+
+ /* enable position buffer, if needed */
+ if (bus->use_posbuf && bus->posbuf.addr &&
+ !(snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR, SOF_HDA_ADSP_DPLBASE)
+ & SOF_HDA_ADSP_DPLBASE_ENABLE)) {
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_ADSP_DPUBASE,
+ upper_32_bits(bus->posbuf.addr));
+ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, SOF_HDA_ADSP_DPLBASE,
+ (u32)bus->posbuf.addr |
+ SOF_HDA_ADSP_DPLBASE_ENABLE);
+ }
+
+ /* set interrupt enable bits */
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, sd_offset,
+ SOF_HDA_CL_DMA_SD_INT_MASK,
+ SOF_HDA_CL_DMA_SD_INT_MASK);
+
+ /* read FIFO size */
+ if (hstream->direction == SNDRV_PCM_STREAM_PLAYBACK) {
+ hstream->fifo_size =
+ snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR,
+ sd_offset +
+ SOF_HDA_ADSP_REG_CL_SD_FIFOSIZE);
+ hstream->fifo_size &= 0xffff;
+ hstream->fifo_size += 1;
+ } else {
+ hstream->fifo_size = 0;
+ }
+
+ return ret;
+}
+
+int hda_dsp_stream_hw_free(struct snd_sof_dev *sdev,
+ struct snd_pcm_substream *substream)
+{
+ struct hdac_stream *hstream = substream->runtime->private_data;
+ struct hdac_ext_stream *hext_stream = container_of(hstream,
+ struct hdac_ext_stream,
+ hstream);
+ struct hdac_bus *bus = sof_to_bus(sdev);
+ u32 mask = 0x1 << hstream->index;
+ int ret;
+
+ ret = hda_dsp_stream_reset(sdev, hstream);
+ if (ret < 0)
+ return ret;
+
+ spin_lock_irq(&bus->reg_lock);
+ /* couple host and link DMA if link DMA channel is idle */
+ if (!hext_stream->link_locked)
+ snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR,
+ SOF_HDA_REG_PP_PPCTL, mask, 0);
+ spin_unlock_irq(&bus->reg_lock);
+
+ hda_dsp_stream_spib_config(sdev, hext_stream, HDA_DSP_SPIB_DISABLE, 0);
+
+ hstream->substream = NULL;
+
+ return 0;
+}
+
+bool hda_dsp_check_stream_irq(struct snd_sof_dev *sdev)
+{
+ struct hdac_bus *bus = sof_to_bus(sdev);
+ bool ret = false;
+ u32 status;
+
+ /* The function can be called at irq thread, so use spin_lock_irq */
+ spin_lock_irq(&bus->reg_lock);
+
+ status = snd_hdac_chip_readl(bus, INTSTS);
+ trace_sof_intel_hda_dsp_check_stream_irq(sdev, status);
+
+ /* if Register inaccessible, ignore it.*/
+ if (status != 0xffffffff)
+ ret = true;
+
+ spin_unlock_irq(&bus->reg_lock);
+
+ return ret;
+}
+
+static void
+hda_dsp_compr_bytes_transferred(struct hdac_stream *hstream, int direction)
+{
+ u64 buffer_size = hstream->bufsize;
+ u64 prev_pos, pos, num_bytes;
+
+ div64_u64_rem(hstream->curr_pos, buffer_size, &prev_pos);
+ pos = hda_dsp_stream_get_position(hstream, direction, false);
+
+ if (pos < prev_pos)
+ num_bytes = (buffer_size - prev_pos) + pos;
+ else
+ num_bytes = pos - prev_pos;
+
+ hstream->curr_pos += num_bytes;
+}
+
+static bool hda_dsp_stream_check(struct hdac_bus *bus, u32 status)
+{
+ struct sof_intel_hda_dev *sof_hda = bus_to_sof_hda(bus);
+ struct hdac_stream *s;
+ bool active = false;
+ u32 sd_status;
+
+ list_for_each_entry(s, &bus->stream_list, list) {
+ if (status & BIT(s->index) && s->opened) {
+ sd_status = snd_hdac_stream_readb(s, SD_STS);
+
+ trace_sof_intel_hda_dsp_stream_status(bus->dev, s, sd_status);
+
+ snd_hdac_stream_writeb(s, SD_STS, sd_status);
+
+ active = true;
+ if ((!s->substream && !s->cstream) ||
+ !s->running ||
+ (sd_status & SOF_HDA_CL_DMA_SD_INT_COMPLETE) == 0)
+ continue;
+
+ /* Inform ALSA only in case not do that with IPC */
+ if (s->substream && sof_hda->no_ipc_position) {
+ snd_sof_pcm_period_elapsed(s->substream);
+ } else if (s->cstream) {
+ hda_dsp_compr_bytes_transferred(s, s->cstream->direction);
+ snd_compr_fragment_elapsed(s->cstream);
+ }
+ }
+ }
+
+ return active;
+}
+
+irqreturn_t hda_dsp_stream_threaded_handler(int irq, void *context)
+{
+ struct snd_sof_dev *sdev = context;
+ struct hdac_bus *bus = sof_to_bus(sdev);
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+ u32 rirb_status;
+#endif
+ bool active;
+ u32 status;
+ int i;
+
+ /*
+ * Loop 10 times to handle missed interrupts caused by
+ * unsolicited responses from the codec
+ */
+ for (i = 0, active = true; i < 10 && active; i++) {
+ spin_lock_irq(&bus->reg_lock);
+
+ status = snd_hdac_chip_readl(bus, INTSTS);
+
+ /* check streams */
+ active = hda_dsp_stream_check(bus, status);
+
+ /* check and clear RIRB interrupt */
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+ if (status & AZX_INT_CTRL_EN) {
+ rirb_status = snd_hdac_chip_readb(bus, RIRBSTS);
+ if (rirb_status & RIRB_INT_MASK) {
+ /*
+ * Clearing the interrupt status here ensures
+ * that no interrupt gets masked after the RIRB
+ * wp is read in snd_hdac_bus_update_rirb.
+ */
+ snd_hdac_chip_writeb(bus, RIRBSTS,
+ RIRB_INT_MASK);
+ active = true;
+ if (rirb_status & RIRB_INT_RESPONSE)
+ snd_hdac_bus_update_rirb(bus);
+ }
+ }
+#endif
+ spin_unlock_irq(&bus->reg_lock);
+ }
+
+ return IRQ_HANDLED;
+}
+
+int hda_dsp_stream_init(struct snd_sof_dev *sdev)
+{
+ struct hdac_bus *bus = sof_to_bus(sdev);
+ struct hdac_ext_stream *hext_stream;
+ struct hdac_stream *hstream;
+ struct pci_dev *pci = to_pci_dev(sdev->dev);
+ struct sof_intel_hda_dev *sof_hda = bus_to_sof_hda(bus);
+ int sd_offset;
+ int i, num_playback, num_capture, num_total, ret;
+ u32 gcap;
+
+ gcap = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR, SOF_HDA_GCAP);
+ dev_dbg(sdev->dev, "hda global caps = 0x%x\n", gcap);
+
+ /* get stream count from GCAP */
+ num_capture = (gcap >> 8) & 0x0f;
+ num_playback = (gcap >> 12) & 0x0f;
+ num_total = num_playback + num_capture;
+
+ dev_dbg(sdev->dev, "detected %d playback and %d capture streams\n",
+ num_playback, num_capture);
+
+ if (num_playback >= SOF_HDA_PLAYBACK_STREAMS) {
+ dev_err(sdev->dev, "error: too many playback streams %d\n",
+ num_playback);
+ return -EINVAL;
+ }
+
+ if (num_capture >= SOF_HDA_CAPTURE_STREAMS) {
+ dev_err(sdev->dev, "error: too many capture streams %d\n",
+ num_playback);
+ return -EINVAL;
+ }
+
+ /*
+ * mem alloc for the position buffer
+ * TODO: check position buffer update
+ */
+ ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &pci->dev,
+ SOF_HDA_DPIB_ENTRY_SIZE * num_total,
+ &bus->posbuf);
+ if (ret < 0) {
+ dev_err(sdev->dev, "error: posbuffer dma alloc failed\n");
+ return -ENOMEM;
+ }
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+ /* mem alloc for the CORB/RIRB ringbuffers */
+ ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &pci->dev,
+ PAGE_SIZE, &bus->rb);
+ if (ret < 0) {
+ dev_err(sdev->dev, "error: RB alloc failed\n");
+ return -ENOMEM;
+ }
+#endif
+
+ /* create capture streams */
+ for (i = 0; i < num_capture; i++) {
+ struct sof_intel_hda_stream *hda_stream;
+
+ hda_stream = devm_kzalloc(sdev->dev, sizeof(*hda_stream),
+ GFP_KERNEL);
+ if (!hda_stream)
+ return -ENOMEM;
+
+ hda_stream->sdev = sdev;
+
+ hext_stream = &hda_stream->hext_stream;
+
+ hext_stream->pphc_addr = sdev->bar[HDA_DSP_PP_BAR] +
+ SOF_HDA_PPHC_BASE + SOF_HDA_PPHC_INTERVAL * i;
+
+ hext_stream->pplc_addr = sdev->bar[HDA_DSP_PP_BAR] +
+ SOF_HDA_PPLC_BASE + SOF_HDA_PPLC_MULTI * num_total +
+ SOF_HDA_PPLC_INTERVAL * i;
+
+ /* do we support SPIB */
+ if (sdev->bar[HDA_DSP_SPIB_BAR]) {
+ hext_stream->spib_addr = sdev->bar[HDA_DSP_SPIB_BAR] +
+ SOF_HDA_SPIB_BASE + SOF_HDA_SPIB_INTERVAL * i +
+ SOF_HDA_SPIB_SPIB;
+
+ hext_stream->fifo_addr = sdev->bar[HDA_DSP_SPIB_BAR] +
+ SOF_HDA_SPIB_BASE + SOF_HDA_SPIB_INTERVAL * i +
+ SOF_HDA_SPIB_MAXFIFO;
+ }
+
+ hstream = &hext_stream->hstream;
+ hstream->bus = bus;
+ hstream->sd_int_sta_mask = 1 << i;
+ hstream->index = i;
+ sd_offset = SOF_STREAM_SD_OFFSET(hstream);
+ hstream->sd_addr = sdev->bar[HDA_DSP_HDA_BAR] + sd_offset;
+ hstream->stream_tag = i + 1;
+ hstream->opened = false;
+ hstream->running = false;
+ hstream->direction = SNDRV_PCM_STREAM_CAPTURE;
+
+ /* memory alloc for stream BDL */
+ ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &pci->dev,
+ HDA_DSP_BDL_SIZE, &hstream->bdl);
+ if (ret < 0) {
+ dev_err(sdev->dev, "error: stream bdl dma alloc failed\n");
+ return -ENOMEM;
+ }
+ hstream->posbuf = (__le32 *)(bus->posbuf.area +
+ (hstream->index) * 8);
+
+ list_add_tail(&hstream->list, &bus->stream_list);
+ }
+
+ /* create playback streams */
+ for (i = num_capture; i < num_total; i++) {
+ struct sof_intel_hda_stream *hda_stream;
+
+ hda_stream = devm_kzalloc(sdev->dev, sizeof(*hda_stream),
+ GFP_KERNEL);
+ if (!hda_stream)
+ return -ENOMEM;
+
+ hda_stream->sdev = sdev;
+
+ hext_stream = &hda_stream->hext_stream;
+
+ /* we always have DSP support */
+ hext_stream->pphc_addr = sdev->bar[HDA_DSP_PP_BAR] +
+ SOF_HDA_PPHC_BASE + SOF_HDA_PPHC_INTERVAL * i;
+
+ hext_stream->pplc_addr = sdev->bar[HDA_DSP_PP_BAR] +
+ SOF_HDA_PPLC_BASE + SOF_HDA_PPLC_MULTI * num_total +
+ SOF_HDA_PPLC_INTERVAL * i;
+
+ /* do we support SPIB */
+ if (sdev->bar[HDA_DSP_SPIB_BAR]) {
+ hext_stream->spib_addr = sdev->bar[HDA_DSP_SPIB_BAR] +
+ SOF_HDA_SPIB_BASE + SOF_HDA_SPIB_INTERVAL * i +
+ SOF_HDA_SPIB_SPIB;
+
+ hext_stream->fifo_addr = sdev->bar[HDA_DSP_SPIB_BAR] +
+ SOF_HDA_SPIB_BASE + SOF_HDA_SPIB_INTERVAL * i +
+ SOF_HDA_SPIB_MAXFIFO;
+ }
+
+ hstream = &hext_stream->hstream;
+ hstream->bus = bus;
+ hstream->sd_int_sta_mask = 1 << i;
+ hstream->index = i;
+ sd_offset = SOF_STREAM_SD_OFFSET(hstream);
+ hstream->sd_addr = sdev->bar[HDA_DSP_HDA_BAR] + sd_offset;
+ hstream->stream_tag = i - num_capture + 1;
+ hstream->opened = false;
+ hstream->running = false;
+ hstream->direction = SNDRV_PCM_STREAM_PLAYBACK;
+
+ /* mem alloc for stream BDL */
+ ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &pci->dev,
+ HDA_DSP_BDL_SIZE, &hstream->bdl);
+ if (ret < 0) {
+ dev_err(sdev->dev, "error: stream bdl dma alloc failed\n");
+ return -ENOMEM;
+ }
+
+ hstream->posbuf = (__le32 *)(bus->posbuf.area +
+ (hstream->index) * 8);
+
+ list_add_tail(&hstream->list, &bus->stream_list);
+ }
+
+ /* store total stream count (playback + capture) from GCAP */
+ sof_hda->stream_max = num_total;
+
+ return 0;
+}
+
+void hda_dsp_stream_free(struct snd_sof_dev *sdev)
+{
+ struct hdac_bus *bus = sof_to_bus(sdev);
+ struct hdac_stream *s, *_s;
+ struct hdac_ext_stream *hext_stream;
+ struct sof_intel_hda_stream *hda_stream;
+
+ /* free position buffer */
+ if (bus->posbuf.area)
+ snd_dma_free_pages(&bus->posbuf);
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
+ /* free position buffer */
+ if (bus->rb.area)
+ snd_dma_free_pages(&bus->rb);
+#endif
+
+ list_for_each_entry_safe(s, _s, &bus->stream_list, list) {
+ /* TODO: decouple */
+
+ /* free bdl buffer */
+ if (s->bdl.area)
+ snd_dma_free_pages(&s->bdl);
+ list_del(&s->list);
+ hext_stream = stream_to_hdac_ext_stream(s);
+ hda_stream = container_of(hext_stream, struct sof_intel_hda_stream,
+ hext_stream);
+ devm_kfree(sdev->dev, hda_stream);
+ }
+}
+
+snd_pcm_uframes_t hda_dsp_stream_get_position(struct hdac_stream *hstream,
+ int direction, bool can_sleep)
+{
+ struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream);
+ struct sof_intel_hda_stream *hda_stream = hstream_to_sof_hda_stream(hext_stream);
+ struct snd_sof_dev *sdev = hda_stream->sdev;
+ snd_pcm_uframes_t pos;
+
+ switch (sof_hda_position_quirk) {
+ case SOF_HDA_POSITION_QUIRK_USE_SKYLAKE_LEGACY:
+ /*
+ * This legacy code, inherited from the Skylake driver,
+ * mixes DPIB registers and DPIB DDR updates and
+ * does not seem to follow any known hardware recommendations.
+ * It's not clear e.g. why there is a different flow
+ * for capture and playback, the only information that matters is
+ * what traffic class is used, and on all SOF-enabled platforms
+ * only VC0 is supported so the work-around was likely not necessary
+ * and quite possibly wrong.
+ */
+
+ /* DPIB/posbuf position mode:
+ * For Playback, Use DPIB register from HDA space which
+ * reflects the actual data transferred.
+ * For Capture, Use the position buffer for pointer, as DPIB
+ * is not accurate enough, its update may be completed
+ * earlier than the data written to DDR.
+ */
+ if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
+ pos = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR,
+ AZX_REG_VS_SDXDPIB_XBASE +
+ (AZX_REG_VS_SDXDPIB_XINTERVAL *
+ hstream->index));
+ } else {
+ /*
+ * For capture stream, we need more workaround to fix the
+ * position incorrect issue:
+ *
+ * 1. Wait at least 20us before reading position buffer after
+ * the interrupt generated(IOC), to make sure position update
+ * happens on frame boundary i.e. 20.833uSec for 48KHz.
+ * 2. Perform a dummy Read to DPIB register to flush DMA
+ * position value.
+ * 3. Read the DMA Position from posbuf. Now the readback
+ * value should be >= period boundary.
+ */
+ if (can_sleep)
+ usleep_range(20, 21);
+
+ snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR,
+ AZX_REG_VS_SDXDPIB_XBASE +
+ (AZX_REG_VS_SDXDPIB_XINTERVAL *
+ hstream->index));
+ pos = snd_hdac_stream_get_pos_posbuf(hstream);
+ }
+ break;
+ case SOF_HDA_POSITION_QUIRK_USE_DPIB_REGISTERS:
+ /*
+ * In case VC1 traffic is disabled this is the recommended option
+ */
+ pos = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR,
+ AZX_REG_VS_SDXDPIB_XBASE +
+ (AZX_REG_VS_SDXDPIB_XINTERVAL *
+ hstream->index));
+ break;
+ case SOF_HDA_POSITION_QUIRK_USE_DPIB_DDR_UPDATE:
+ /*
+ * This is the recommended option when VC1 is enabled.
+ * While this isn't needed for SOF platforms it's added for
+ * consistency and debug.
+ */
+ pos = snd_hdac_stream_get_pos_posbuf(hstream);
+ break;
+ default:
+ dev_err_once(sdev->dev, "hda_position_quirk value %d not supported\n",
+ sof_hda_position_quirk);
+ pos = 0;
+ break;
+ }
+
+ if (pos >= hstream->bufsize)
+ pos = 0;
+
+ return pos;
+}