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Subject[RESEND PATCH v2 07/15] ASoC: qcom: q6asm: Add support to memory map and unmap
Date
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

This patch adds support to memory map and unmap regions commands in
q6asm module.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
sound/soc/qcom/qdsp6/q6asm.c | 343 ++++++++++++++++++++++++++++++++++++++++++-
sound/soc/qcom/qdsp6/q6asm.h | 5 +
2 files changed, 347 insertions(+), 1 deletion(-)

diff --git a/sound/soc/qcom/qdsp6/q6asm.c b/sound/soc/qcom/qdsp6/q6asm.c
index 9cc583afef4d..4be92441f524 100644
--- a/sound/soc/qcom/qdsp6/q6asm.c
+++ b/sound/soc/qcom/qdsp6/q6asm.c
@@ -14,9 +14,46 @@
#include "q6asm.h"
#include "common.h"

+#define ASM_CMD_SHARED_MEM_MAP_REGIONS 0x00010D92
+#define ASM_CMDRSP_SHARED_MEM_MAP_REGIONS 0x00010D93
+#define ASM_CMD_SHARED_MEM_UNMAP_REGIONS 0x00010D94
+
#define TUN_READ_IO_MODE 0x0004 /* tunnel read write mode */
#define SYNC_IO_MODE 0x0001
#define ASYNC_IO_MODE 0x0002
+#define ASM_SHIFT_GAPLESS_MODE_FLAG 31
+#define ADSP_MEMORY_MAP_SHMEM8_4K_POOL 3
+
+struct avs_cmd_shared_mem_map_regions {
+ struct apr_hdr hdr;
+ u16 mem_pool_id;
+ u16 num_regions;
+ u32 property_flag;
+} __packed;
+
+struct avs_shared_map_region_payload {
+ u32 shm_addr_lsw;
+ u32 shm_addr_msw;
+ u32 mem_size_bytes;
+} __packed;
+
+struct avs_cmd_shared_mem_unmap_regions {
+ struct apr_hdr hdr;
+ u32 mem_map_handle;
+} __packed;
+
+struct audio_buffer {
+ dma_addr_t phys;
+ uint32_t used;
+ uint32_t size; /* size of buffer */
+};
+
+struct audio_port_data {
+ struct audio_buffer *buf;
+ uint32_t max_buf_cnt;
+ uint32_t dsp_buf;
+ uint32_t mem_map_handle;
+};

struct audio_client {
int session;
@@ -27,6 +64,8 @@ struct audio_client {
uint64_t time_stamp;
struct apr_device *adev;
struct mutex cmd_lock;
+ /* idx:1 out port, 0: in port */
+ struct audio_port_data port[2];
wait_queue_head_t cmd_wait;
int perf_mode;
int stream_id;
@@ -86,6 +125,260 @@ static void q6asm_session_free(struct audio_client *ac)
mutex_unlock(&a->session_lock);
}

+static inline void q6asm_add_mmaphdr(struct audio_client *ac,
+ struct apr_hdr *hdr, u32 pkt_size,
+ bool cmd_flg, u32 token)
+{
+ hdr->hdr_field = APR_SEQ_CMD_HDR_FIELD;
+ hdr->src_port = 0;
+ hdr->dest_port = 0;
+ hdr->pkt_size = pkt_size;
+ if (cmd_flg)
+ hdr->token = token;
+}
+
+static inline void q6asm_add_hdr(struct audio_client *ac, struct apr_hdr *hdr,
+ uint32_t pkt_size, bool cmd_flg,
+ uint32_t stream_id)
+{
+ hdr->hdr_field = APR_SEQ_CMD_HDR_FIELD;
+ hdr->src_svc = ac->adev->svc_id;
+ hdr->src_domain = APR_DOMAIN_APPS;
+ hdr->dest_svc = APR_SVC_ASM;
+ hdr->dest_domain = APR_DOMAIN_ADSP;
+ hdr->src_port = ((ac->session << 8) & 0xFF00) | (stream_id);
+ hdr->dest_port = ((ac->session << 8) & 0xFF00) | (stream_id);
+ hdr->pkt_size = pkt_size;
+ if (cmd_flg)
+ hdr->token = ac->session;
+}
+
+static int __q6asm_memory_unmap(struct audio_client *ac,
+ phys_addr_t buf_add, int dir)
+{
+ struct avs_cmd_shared_mem_unmap_regions mem_unmap;
+ struct q6asm *a = dev_get_drvdata(ac->dev->parent);
+ int rc;
+
+ if (!a)
+ return -ENODEV;
+
+ q6asm_add_mmaphdr(ac, &mem_unmap.hdr, sizeof(mem_unmap), true,
+ ((ac->session << 8) | dir));
+ a->mem_state = -1;
+
+ mem_unmap.hdr.opcode = ASM_CMD_SHARED_MEM_UNMAP_REGIONS;
+ mem_unmap.mem_map_handle = ac->port[dir].mem_map_handle;
+
+ if (mem_unmap.mem_map_handle == 0) {
+ dev_err(ac->dev, "invalid mem handle\n");
+ return -EINVAL;
+ }
+
+ rc = apr_send_pkt(a->adev, (uint32_t *) &mem_unmap);
+ if (rc < 0)
+ return rc;
+
+ rc = wait_event_timeout(a->mem_wait, (a->mem_state >= 0),
+ 5 * HZ);
+ if (!rc) {
+ dev_err(ac->dev, "CMD timeout for memory_unmap 0x%x\n",
+ mem_unmap.mem_map_handle);
+ return -ETIMEDOUT;
+ } else if (a->mem_state > 0) {
+ return adsp_err_get_lnx_err_code(a->mem_state);
+ }
+ ac->port[dir].mem_map_handle = 0;
+
+ return 0;
+}
+
+/**
+ * q6asm_unmap_memory_regions() - unmap memory regions in the dsp.
+ *
+ * @dir: direction of audio stream
+ * @ac: audio client instanace
+ *
+ * Return: Will be an negative value on failure or zero on success
+ */
+int q6asm_unmap_memory_regions(unsigned int dir, struct audio_client *ac)
+{
+ struct audio_port_data *port;
+ int cnt = 0;
+ int rc = 0;
+
+ mutex_lock(&ac->cmd_lock);
+ port = &ac->port[dir];
+ if (!port->buf) {
+ mutex_unlock(&ac->cmd_lock);
+ return 0;
+ }
+ cnt = port->max_buf_cnt - 1;
+ if (cnt >= 0) {
+ rc = __q6asm_memory_unmap(ac, port->buf[dir].phys, dir);
+ if (rc < 0) {
+ dev_err(ac->dev, "%s: Memory_unmap_regions failed %d\n",
+ __func__, rc);
+ mutex_unlock(&ac->cmd_lock);
+ return rc;
+ }
+ }
+
+ port->max_buf_cnt = 0;
+ kfree(port->buf);
+ port->buf = NULL;
+ mutex_unlock(&ac->cmd_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(q6asm_unmap_memory_regions);
+
+static int __q6asm_memory_map_regions(struct audio_client *ac, int dir,
+ uint32_t period_sz, uint32_t periods,
+ bool is_contiguous)
+{
+ struct avs_cmd_shared_mem_map_regions *mmap_regions = NULL;
+ struct avs_shared_map_region_payload *mregions = NULL;
+ struct q6asm *a = dev_get_drvdata(ac->dev->parent);
+ struct audio_port_data *port = NULL;
+ struct audio_buffer *ab = NULL;
+ void *mmap_region_cmd = NULL;
+ void *payload = NULL;
+ int rc = 0;
+ int i = 0;
+ int cmd_size = 0;
+ uint32_t num_regions;
+ uint32_t buf_sz;
+
+ if (!a)
+ return -ENODEV;
+ num_regions = is_contiguous ? 1 : periods;
+ buf_sz = is_contiguous ? (period_sz * periods) : period_sz;
+ buf_sz = PAGE_ALIGN(buf_sz);
+
+ cmd_size = sizeof(*mmap_regions) + (sizeof(*mregions) * num_regions);
+
+ mmap_region_cmd = kzalloc(cmd_size, GFP_KERNEL);
+ if (!mmap_region_cmd)
+ return -ENOMEM;
+
+ mmap_regions = (struct avs_cmd_shared_mem_map_regions *)mmap_region_cmd;
+ q6asm_add_mmaphdr(ac, &mmap_regions->hdr, cmd_size, true,
+ ((ac->session << 8) | dir));
+ a->mem_state = -1;
+
+ mmap_regions->hdr.opcode = ASM_CMD_SHARED_MEM_MAP_REGIONS;
+ mmap_regions->mem_pool_id = ADSP_MEMORY_MAP_SHMEM8_4K_POOL;
+ mmap_regions->num_regions = num_regions;
+ mmap_regions->property_flag = 0x00;
+
+ payload = ((u8 *) mmap_region_cmd +
+ sizeof(struct avs_cmd_shared_mem_map_regions));
+
+ mregions = (struct avs_shared_map_region_payload *)payload;
+
+ ac->port[dir].mem_map_handle = 0;
+ port = &ac->port[dir];
+
+ for (i = 0; i < num_regions; i++) {
+ ab = &port->buf[i];
+ mregions->shm_addr_lsw = lower_32_bits(ab->phys);
+ mregions->shm_addr_msw = upper_32_bits(ab->phys);
+ mregions->mem_size_bytes = buf_sz;
+ ++mregions;
+ }
+
+ rc = apr_send_pkt(a->adev, (uint32_t *) mmap_region_cmd);
+ if (rc < 0)
+ goto fail_cmd;
+
+ rc = wait_event_timeout(a->mem_wait, (a->mem_state >= 0),
+ 5 * HZ);
+ if (!rc) {
+ dev_err(ac->dev, "timeout. waited for memory_map\n");
+ rc = -ETIMEDOUT;
+ goto fail_cmd;
+ }
+
+ if (a->mem_state > 0) {
+ rc = adsp_err_get_lnx_err_code(a->mem_state);
+ goto fail_cmd;
+ }
+ rc = 0;
+fail_cmd:
+ kfree(mmap_region_cmd);
+ return rc;
+}
+
+/**
+ * q6asm_map_memory_regions() - map memory regions in the dsp.
+ *
+ * @dir: direction of audio stream
+ * @ac: audio client instanace
+ * @phys: physcial address that needs mapping.
+ * @period_sz: audio period size
+ * @periods: number of periods
+ *
+ * Return: Will be an negative value on failure or zero on success
+ */
+int q6asm_map_memory_regions(unsigned int dir, struct audio_client *ac,
+ dma_addr_t phys,
+ unsigned int period_sz, unsigned int periods)
+{
+ struct audio_buffer *buf;
+ int cnt;
+ int rc;
+
+ if (ac->port[dir].buf) {
+ dev_err(ac->dev, "Buffer already allocated\n");
+ return 0;
+ }
+
+ mutex_lock(&ac->cmd_lock);
+
+ buf = kzalloc(((sizeof(struct audio_buffer)) * periods), GFP_KERNEL);
+ if (!buf) {
+ mutex_unlock(&ac->cmd_lock);
+ return -ENOMEM;
+ }
+
+
+ ac->port[dir].buf = buf;
+
+ buf[0].phys = phys;
+ buf[0].used = dir ^ 1;
+ buf[0].size = period_sz;
+ cnt = 1;
+ while (cnt < periods) {
+ if (period_sz > 0) {
+ buf[cnt].phys = buf[0].phys + (cnt * period_sz);
+ buf[cnt].used = dir ^ 1;
+ buf[cnt].size = period_sz;
+ }
+ cnt++;
+ }
+
+ ac->port[dir].max_buf_cnt = periods;
+ mutex_unlock(&ac->cmd_lock);
+
+ rc = __q6asm_memory_map_regions(ac, dir, period_sz, periods, 1);
+ if (rc < 0) {
+ dev_err(ac->dev,
+ "CMD Memory_map_regions failed %d for size %d\n", rc,
+ period_sz);
+
+
+ ac->port[dir].max_buf_cnt = 0;
+ kfree(buf);
+ ac->port[dir].buf = NULL;
+
+ return rc;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(q6asm_map_memory_regions);
+
/**
* q6asm_audio_client_free() - Freee allocated audio client
*
@@ -117,8 +410,10 @@ static struct audio_client *q6asm_get_audio_client(struct q6asm *a,

static int q6asm_srvc_callback(struct apr_device *adev, struct apr_client_data *data)
{
- struct q6asm *q6asm = dev_get_drvdata(&adev->dev);
+ struct q6asm *a, *q6asm = dev_get_drvdata(&adev->dev);
struct audio_client *ac = NULL;
+ struct audio_port_data *port;
+ uint32_t dir = 0;
uint32_t sid = 0;
uint32_t *payload;

@@ -135,6 +430,52 @@ static int q6asm_srvc_callback(struct apr_device *adev, struct apr_client_data *
return 0;
}

+ a = dev_get_drvdata(ac->dev->parent);
+ if (data->opcode == APR_BASIC_RSP_RESULT) {
+ switch (payload[0]) {
+ case ASM_CMD_SHARED_MEM_MAP_REGIONS:
+ case ASM_CMD_SHARED_MEM_UNMAP_REGIONS:
+ if (payload[1] != 0) {
+ dev_err(ac->dev,
+ "cmd = 0x%x returned error = 0x%x sid:%d\n",
+ payload[0], payload[1], sid);
+ a->mem_state = payload[1];
+ } else {
+ a->mem_state = 0;
+ }
+
+ wake_up(&a->mem_wait);
+ break;
+ default:
+ dev_err(&adev->dev, "command[0x%x] not expecting rsp\n",
+ payload[0]);
+ break;
+ }
+ return 0;
+ }
+
+ dir = (data->token & 0x0F);
+ port = &ac->port[dir];
+
+ switch (data->opcode) {
+ case ASM_CMDRSP_SHARED_MEM_MAP_REGIONS:{
+ a->mem_state = 0;
+ ac->port[dir].mem_map_handle = payload[0];
+ wake_up(&a->mem_wait);
+ break;
+ }
+ case ASM_CMD_SHARED_MEM_UNMAP_REGIONS:{
+ a->mem_state = 0;
+ ac->port[dir].mem_map_handle = 0;
+ wake_up(&a->mem_wait);
+
+ break;
+ }
+ default:
+ dev_dbg(&adev->dev, "command[0x%x]success [0x%x]\n",
+ payload[0], payload[1]);
+ break;
+ }
if (ac->cb)
ac->cb(data->opcode, data->token, data->payload, ac->priv);
return 0;
diff --git a/sound/soc/qcom/qdsp6/q6asm.h b/sound/soc/qcom/qdsp6/q6asm.h
index 7a8a9039fd89..e1409c368600 100644
--- a/sound/soc/qcom/qdsp6/q6asm.h
+++ b/sound/soc/qcom/qdsp6/q6asm.h
@@ -11,4 +11,9 @@ struct audio_client *q6asm_audio_client_alloc(struct device *dev,
app_cb cb, void *priv);
void q6asm_audio_client_free(struct audio_client *ac);
int q6asm_get_session_id(struct audio_client *ac);
+int q6asm_map_memory_regions(unsigned int dir,
+ struct audio_client *ac,
+ dma_addr_t phys,
+ unsigned int bufsz, unsigned int bufcnt);
+int q6asm_unmap_memory_regions(unsigned int dir, struct audio_client *ac);
#endif /* __Q6_ASM_H__ */
--
2.15.0
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