This patch adds support to memory map and unmap regions commands in q6asm module.
Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org Reviewed-and-tested-by: Rohit kumar rohitkr@codeaurora.org Reviewed-by: Banajit Goswami bgoswami@codeaurora.org --- sound/soc/qcom/qdsp6/q6asm.c | 351 +++++++++++++++++++++++++++++++++++++++++++ sound/soc/qcom/qdsp6/q6asm.h | 5 + 2 files changed, 356 insertions(+)
diff --git a/sound/soc/qcom/qdsp6/q6asm.c b/sound/soc/qcom/qdsp6/q6asm.c index 09f62e90ab00..044ad57d15a0 100644 --- a/sound/soc/qcom/qdsp6/q6asm.c +++ b/sound/soc/qcom/qdsp6/q6asm.c @@ -18,10 +18,45 @@ #include "q6dsp-errno.h" #include "q6dsp-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 ASM_SYNC_IO_MODE 0x0001 #define ASM_ASYNC_IO_MODE 0x0002 #define ASM_TUN_READ_IO_MODE 0x0004 /* tunnel read write mode */ #define ASM_TUN_WRITE_IO_MODE 0x0008 /* tunnel read write mode */ +#define ASM_SHIFT_GAPLESS_MODE_FLAG 31 +#define ADSP_MEMORY_MAP_SHMEM8_4K_POOL 3 + +struct avs_cmd_shared_mem_map_regions { + 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 { + u32 mem_map_handle; +} __packed; + +struct audio_buffer { + phys_addr_t phys; + uint32_t used; + uint32_t size; /* size of buffer */ +}; + +struct audio_port_data { + struct audio_buffer *buf; + uint32_t num_periods; + uint32_t dsp_buf; + uint32_t mem_map_handle; +};
struct audio_client { int session; @@ -31,6 +66,8 @@ struct audio_client { struct apr_device *adev; struct mutex lock; spinlock_t buf_lock; + /* idx:1 out port, 0: in port */ + struct audio_port_data port[2]; wait_queue_head_t cmd_wait; struct aprv2_ibasic_rsp_result_t result; int perf_mode; @@ -48,6 +85,279 @@ struct q6asm { struct platform_device *pdev_dais; };
+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_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_apr_send_session_pkt(struct q6asm *a, struct audio_client *ac, + struct apr_pkt *pkt, uint32_t rsp_opcode) +{ + struct apr_hdr *hdr = &pkt->hdr; + int rc; + + mutex_lock(&ac->lock); + ac->result.opcode = 0; + ac->result.status = 0; + rc = apr_send_pkt(a->adev, pkt); + if (rc < 0) + goto err; + + if (rsp_opcode) + rc = wait_event_timeout(a->mem_wait, + (ac->result.opcode == hdr->opcode) || + (ac->result.opcode == rsp_opcode), + 5 * HZ); + else + rc = wait_event_timeout(a->mem_wait, + (ac->result.opcode == hdr->opcode), + 5 * HZ); + + if (!rc) { + dev_err(a->dev, "CMD timeout\n"); + rc = -ETIMEDOUT; + } else if (ac->result.status > 0) { + dev_err(a->dev, "DSP returned error[%x]\n", + ac->result.status); + rc = -EINVAL; + } + +err: + mutex_unlock(&ac->lock); + return rc; +} + +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); + struct apr_pkt *pkt; + int rc, pkt_size; + void *p; + + if (ac->port[dir].mem_map_handle == 0) { + dev_err(ac->dev, "invalid mem handle\n"); + return -EINVAL; + } + pkt_size = APR_HDR_SIZE + sizeof(*mem_unmap); + + p = kzalloc(pkt_size, GFP_KERNEL); + if (!p) + return -ENOMEM; + + pkt = p; + mem_unmap = p + APR_HDR_SIZE; + + pkt->hdr.hdr_field = APR_SEQ_CMD_HDR_FIELD; + pkt->hdr.src_port = 0; + pkt->hdr.dest_port = 0; + pkt->hdr.pkt_size = pkt_size; + pkt->hdr.token = ((ac->session << 8) | dir); + + pkt->hdr.opcode = ASM_CMD_SHARED_MEM_UNMAP_REGIONS; + mem_unmap->mem_map_handle = ac->port[dir].mem_map_handle; + + rc = q6asm_apr_send_session_pkt(a, ac, pkt, 0); + if (rc < 0) { + kfree(pkt); + return rc; + } + + ac->port[dir].mem_map_handle = 0; + + kfree(pkt); + return 0; +} + + +static void q6asm_audio_client_free_buf(struct audio_client *ac, + struct audio_port_data *port) +{ + unsigned long flags; + + spin_lock_irqsave(&ac->buf_lock, flags); + + port->num_periods = 0; + kfree(port->buf); + port->buf = NULL; + + spin_unlock_irqrestore(&ac->buf_lock, flags); +} + +/** + * 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; + + port = &ac->port[dir]; + if (!port->buf) { + rc = -EINVAL; + goto err; + } + + cnt = port->num_periods - 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); + goto err; + } + } + + q6asm_audio_client_free_buf(ac, port); + +err: + return rc; +} +EXPORT_SYMBOL_GPL(q6asm_unmap_memory_regions); + +static int __q6asm_memory_map_regions(struct audio_client *ac, int dir, + size_t period_sz, unsigned int periods, + bool is_contiguous) +{ + struct avs_cmd_shared_mem_map_regions *cmd = 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; + struct apr_pkt *pkt; + void *p; + unsigned long flags; + uint32_t num_regions, buf_sz; + int rc, i, pkt_size; + + if (is_contiguous) { + num_regions = 1; + buf_sz = period_sz * periods; + } else { + buf_sz = period_sz; + num_regions = periods; + } + + /* DSP expects size should be aligned to 4K */ + buf_sz = ALIGN(buf_sz, 4096); + + pkt_size = APR_HDR_SIZE + sizeof(*cmd) + + (sizeof(*mregions) * num_regions); + + p = kzalloc(pkt_size, GFP_KERNEL); + if (!p) + return -ENOMEM; + + pkt = p; + cmd = p + APR_HDR_SIZE; + mregions = p + APR_HDR_SIZE + sizeof(*cmd); + + pkt->hdr.hdr_field = APR_SEQ_CMD_HDR_FIELD; + pkt->hdr.src_port = 0; + pkt->hdr.dest_port = 0; + pkt->hdr.pkt_size = pkt_size; + pkt->hdr.token = ((ac->session << 8) | dir); + pkt->hdr.opcode = ASM_CMD_SHARED_MEM_MAP_REGIONS; + + cmd->mem_pool_id = ADSP_MEMORY_MAP_SHMEM8_4K_POOL; + cmd->num_regions = num_regions; + cmd->property_flag = 0x00; + + port = &ac->port[dir]; + + spin_lock_irqsave(&ac->buf_lock, flags); + 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; + } + spin_unlock_irqrestore(&ac->buf_lock, flags); + + rc = q6asm_apr_send_session_pkt(a, ac, pkt, + ASM_CMDRSP_SHARED_MEM_MAP_REGIONS); + + kfree(pkt); + + 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, + phys_addr_t phys, + size_t period_sz, unsigned int periods) +{ + struct audio_buffer *buf; + unsigned long flags; + int cnt; + int rc; + + spin_lock_irqsave(&ac->buf_lock, flags); + if (ac->port[dir].buf) { + dev_err(ac->dev, "Buffer already allocated\n"); + spin_unlock_irqrestore(&ac->buf_lock, flags); + return 0; + } + + buf = kzalloc(((sizeof(struct audio_buffer)) * periods), GFP_ATOMIC); + if (!buf) { + spin_unlock_irqrestore(&ac->buf_lock, flags); + return -ENOMEM; + } + + + ac->port[dir].buf = buf; + + buf[0].phys = phys; + buf[0].used = !!dir; + buf[0].size = period_sz; + + for (cnt = 1; cnt < periods; cnt++) { + if (period_sz > 0) { + buf[cnt].phys = buf[0].phys + (cnt * period_sz); + buf[cnt].used = dir ^ 1; + buf[cnt].size = period_sz; + } + } + spin_unlock_irqrestore(&ac->buf_lock, flags); + + ac->port[dir].num_periods = periods; + + rc = __q6asm_memory_map_regions(ac, dir, period_sz, periods, 1); + if (rc < 0) { + dev_err(ac->dev, "Memory_map_regions failed\n"); + q6asm_audio_client_free_buf(ac, &ac->port[dir]); + } + + return rc; +} +EXPORT_SYMBOL_GPL(q6asm_map_memory_regions); + /** * q6asm_audio_client_free() - Freee allocated audio client * @@ -82,9 +392,13 @@ static int q6asm_srvc_callback(struct apr_device *adev, struct apr_resp_pkt *data) { struct q6asm *q6asm = dev_get_drvdata(&adev->dev); + struct aprv2_ibasic_rsp_result_t *result; + struct audio_port_data *port; struct audio_client *ac = NULL; struct apr_hdr *hdr = &data->hdr; + struct q6asm *a; uint32_t sid = 0; + uint32_t dir = 0;
sid = (hdr->token >> 8) & 0x0F; ac = q6asm_get_audio_client(q6asm, sid); @@ -93,6 +407,43 @@ static int q6asm_srvc_callback(struct apr_device *adev, return 0; }
+ a = dev_get_drvdata(ac->dev->parent); + dir = (hdr->token & 0x0F); + port = &ac->port[dir]; + result = data->payload; + + switch (hdr->opcode) { + case APR_BASIC_RSP_RESULT: + switch (result->opcode) { + case ASM_CMD_SHARED_MEM_MAP_REGIONS: + case ASM_CMD_SHARED_MEM_UNMAP_REGIONS: + ac->result = *result; + wake_up(&a->mem_wait); + break; + default: + dev_err(&adev->dev, "command[0x%x] not expecting rsp\n", + result->opcode); + break; + } + return 0; + case ASM_CMDRSP_SHARED_MEM_MAP_REGIONS: + ac->result.status = 0; + ac->result.opcode = hdr->opcode; + port->mem_map_handle = result->opcode; + wake_up(&a->mem_wait); + break; + case ASM_CMD_SHARED_MEM_UNMAP_REGIONS: + ac->result.opcode = hdr->opcode; + ac->result.status = 0; + port->mem_map_handle = 0; + wake_up(&a->mem_wait); + break; + default: + dev_dbg(&adev->dev, "command[0x%x]success [0x%x]\n", + result->opcode, result->status); + break; + } + if (ac->cb) ac->cb(hdr->opcode, hdr->token, data->payload, ac->priv);
diff --git a/sound/soc/qcom/qdsp6/q6asm.h b/sound/soc/qcom/qdsp6/q6asm.h index b7816e6384e7..8c317b7b63c3 100644 --- a/sound/soc/qcom/qdsp6/q6asm.h +++ b/sound/soc/qcom/qdsp6/q6asm.h @@ -12,4 +12,9 @@ struct audio_client *q6asm_audio_client_alloc(struct device *dev, int session_id, int perf_mode); 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, + phys_addr_t phys, + size_t bufsz, unsigned int bufcnt); +int q6asm_unmap_memory_regions(unsigned int dir, struct audio_client *ac); #endif /* __Q6_ASM_H__ */