376 lines
8.4 KiB
C
376 lines
8.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.
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// Copyright (c) 2018, Linaro Limited
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#include <linux/slab.h>
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#include <linux/wait.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/sched.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/jiffies.h>
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#include <linux/soc/qcom/apr.h>
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#include "q6core.h"
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#include "q6dsp-errno.h"
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#define ADSP_STATE_READY_TIMEOUT_MS 3000
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#define Q6_READY_TIMEOUT_MS 100
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#define AVCS_CMD_ADSP_EVENT_GET_STATE 0x0001290C
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#define AVCS_CMDRSP_ADSP_EVENT_GET_STATE 0x0001290D
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#define AVCS_GET_VERSIONS 0x00012905
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#define AVCS_GET_VERSIONS_RSP 0x00012906
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#define AVCS_CMD_GET_FWK_VERSION 0x001292c
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#define AVCS_CMDRSP_GET_FWK_VERSION 0x001292d
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struct avcs_svc_info {
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uint32_t service_id;
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uint32_t version;
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} __packed;
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struct avcs_cmdrsp_get_version {
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uint32_t build_id;
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uint32_t num_services;
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struct avcs_svc_info svc_api_info[];
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} __packed;
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/* for ADSP2.8 and above */
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struct avcs_svc_api_info {
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uint32_t service_id;
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uint32_t api_version;
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uint32_t api_branch_version;
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} __packed;
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struct avcs_cmdrsp_get_fwk_version {
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uint32_t build_major_version;
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uint32_t build_minor_version;
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uint32_t build_branch_version;
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uint32_t build_subbranch_version;
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uint32_t num_services;
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struct avcs_svc_api_info svc_api_info[];
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} __packed;
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struct q6core {
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struct apr_device *adev;
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wait_queue_head_t wait;
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uint32_t avcs_state;
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struct mutex lock;
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bool resp_received;
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uint32_t num_services;
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struct avcs_cmdrsp_get_fwk_version *fwk_version;
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struct avcs_cmdrsp_get_version *svc_version;
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bool fwk_version_supported;
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bool get_state_supported;
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bool get_version_supported;
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bool is_version_requested;
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};
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static struct q6core *g_core;
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static int q6core_callback(struct apr_device *adev, struct apr_resp_pkt *data)
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{
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struct q6core *core = dev_get_drvdata(&adev->dev);
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struct aprv2_ibasic_rsp_result_t *result;
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struct apr_hdr *hdr = &data->hdr;
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result = data->payload;
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switch (hdr->opcode) {
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case APR_BASIC_RSP_RESULT:{
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result = data->payload;
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switch (result->opcode) {
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case AVCS_GET_VERSIONS:
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if (result->status == ADSP_EUNSUPPORTED)
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core->get_version_supported = false;
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core->resp_received = true;
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break;
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case AVCS_CMD_GET_FWK_VERSION:
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if (result->status == ADSP_EUNSUPPORTED)
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core->fwk_version_supported = false;
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core->resp_received = true;
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break;
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case AVCS_CMD_ADSP_EVENT_GET_STATE:
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if (result->status == ADSP_EUNSUPPORTED)
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core->get_state_supported = false;
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core->resp_received = true;
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break;
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}
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break;
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}
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case AVCS_CMDRSP_GET_FWK_VERSION: {
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struct avcs_cmdrsp_get_fwk_version *fwk;
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fwk = data->payload;
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core->fwk_version = kmemdup(data->payload,
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struct_size(fwk, svc_api_info,
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fwk->num_services),
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GFP_ATOMIC);
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if (!core->fwk_version)
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return -ENOMEM;
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core->fwk_version_supported = true;
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core->resp_received = true;
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break;
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}
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case AVCS_GET_VERSIONS_RSP: {
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struct avcs_cmdrsp_get_version *v;
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v = data->payload;
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core->svc_version = kmemdup(data->payload,
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struct_size(v, svc_api_info,
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v->num_services),
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GFP_ATOMIC);
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if (!core->svc_version)
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return -ENOMEM;
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core->get_version_supported = true;
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core->resp_received = true;
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break;
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}
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case AVCS_CMDRSP_ADSP_EVENT_GET_STATE:
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core->get_state_supported = true;
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core->avcs_state = result->opcode;
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core->resp_received = true;
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break;
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default:
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dev_err(&adev->dev, "Message id from adsp core svc: 0x%x\n",
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hdr->opcode);
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break;
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}
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if (core->resp_received)
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wake_up(&core->wait);
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return 0;
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}
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static int q6core_get_fwk_versions(struct q6core *core)
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{
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struct apr_device *adev = core->adev;
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struct apr_pkt pkt;
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int rc;
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pkt.hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD,
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APR_HDR_LEN(APR_HDR_SIZE), APR_PKT_VER);
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pkt.hdr.pkt_size = APR_HDR_SIZE;
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pkt.hdr.opcode = AVCS_CMD_GET_FWK_VERSION;
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rc = apr_send_pkt(adev, &pkt);
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if (rc < 0)
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return rc;
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rc = wait_event_timeout(core->wait, (core->resp_received),
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msecs_to_jiffies(Q6_READY_TIMEOUT_MS));
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if (rc > 0 && core->resp_received) {
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core->resp_received = false;
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if (!core->fwk_version_supported)
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return -ENOTSUPP;
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else
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return 0;
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}
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return rc;
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}
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static int q6core_get_svc_versions(struct q6core *core)
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{
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struct apr_device *adev = core->adev;
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struct apr_pkt pkt;
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int rc;
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pkt.hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD,
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APR_HDR_LEN(APR_HDR_SIZE), APR_PKT_VER);
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pkt.hdr.pkt_size = APR_HDR_SIZE;
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pkt.hdr.opcode = AVCS_GET_VERSIONS;
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rc = apr_send_pkt(adev, &pkt);
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if (rc < 0)
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return rc;
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rc = wait_event_timeout(core->wait, (core->resp_received),
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msecs_to_jiffies(Q6_READY_TIMEOUT_MS));
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if (rc > 0 && core->resp_received) {
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core->resp_received = false;
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return 0;
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}
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return rc;
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}
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static bool __q6core_is_adsp_ready(struct q6core *core)
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{
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struct apr_device *adev = core->adev;
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struct apr_pkt pkt;
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int rc;
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core->get_state_supported = false;
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pkt.hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD,
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APR_HDR_LEN(APR_HDR_SIZE), APR_PKT_VER);
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pkt.hdr.pkt_size = APR_HDR_SIZE;
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pkt.hdr.opcode = AVCS_CMD_ADSP_EVENT_GET_STATE;
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rc = apr_send_pkt(adev, &pkt);
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if (rc < 0)
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return false;
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rc = wait_event_timeout(core->wait, (core->resp_received),
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msecs_to_jiffies(Q6_READY_TIMEOUT_MS));
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if (rc > 0 && core->resp_received) {
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core->resp_received = false;
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if (core->avcs_state)
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return true;
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}
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/* assume that the adsp is up if we not support this command */
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if (!core->get_state_supported)
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return true;
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return false;
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}
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/**
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* q6core_get_svc_api_info() - Get version number of a service.
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*
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* @svc_id: service id of the service.
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* @ainfo: Valid struct pointer to fill svc api information.
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*
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* Return: zero on success and error code on failure or unsupported
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*/
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int q6core_get_svc_api_info(int svc_id, struct q6core_svc_api_info *ainfo)
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{
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int i;
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int ret = -ENOTSUPP;
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if (!g_core || !ainfo)
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return 0;
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mutex_lock(&g_core->lock);
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if (!g_core->is_version_requested) {
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if (q6core_get_fwk_versions(g_core) == -ENOTSUPP)
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q6core_get_svc_versions(g_core);
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g_core->is_version_requested = true;
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}
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if (g_core->fwk_version_supported) {
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for (i = 0; i < g_core->fwk_version->num_services; i++) {
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struct avcs_svc_api_info *info;
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info = &g_core->fwk_version->svc_api_info[i];
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if (svc_id != info->service_id)
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continue;
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ainfo->api_version = info->api_version;
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ainfo->api_branch_version = info->api_branch_version;
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ret = 0;
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break;
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}
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} else if (g_core->get_version_supported) {
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for (i = 0; i < g_core->svc_version->num_services; i++) {
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struct avcs_svc_info *info;
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info = &g_core->svc_version->svc_api_info[i];
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if (svc_id != info->service_id)
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continue;
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ainfo->api_version = info->version;
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ainfo->api_branch_version = 0;
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ret = 0;
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break;
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}
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}
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mutex_unlock(&g_core->lock);
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return ret;
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}
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EXPORT_SYMBOL_GPL(q6core_get_svc_api_info);
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/**
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* q6core_is_adsp_ready() - Get status of adsp
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*
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* Return: Will be an true if adsp is ready and false if not.
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*/
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bool q6core_is_adsp_ready(void)
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{
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unsigned long timeout;
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bool ret = false;
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if (!g_core)
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return false;
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mutex_lock(&g_core->lock);
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timeout = jiffies + msecs_to_jiffies(ADSP_STATE_READY_TIMEOUT_MS);
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for (;;) {
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if (__q6core_is_adsp_ready(g_core)) {
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ret = true;
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break;
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}
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if (!time_after(timeout, jiffies)) {
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ret = false;
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break;
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}
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}
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mutex_unlock(&g_core->lock);
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return ret;
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}
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EXPORT_SYMBOL_GPL(q6core_is_adsp_ready);
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static int q6core_probe(struct apr_device *adev)
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{
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g_core = kzalloc(sizeof(*g_core), GFP_KERNEL);
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if (!g_core)
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return -ENOMEM;
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dev_set_drvdata(&adev->dev, g_core);
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mutex_init(&g_core->lock);
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g_core->adev = adev;
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init_waitqueue_head(&g_core->wait);
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return 0;
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}
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static void q6core_exit(struct apr_device *adev)
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{
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struct q6core *core = dev_get_drvdata(&adev->dev);
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if (core->fwk_version_supported)
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kfree(core->fwk_version);
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if (core->get_version_supported)
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kfree(core->svc_version);
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g_core = NULL;
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kfree(core);
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}
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#ifdef CONFIG_OF
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static const struct of_device_id q6core_device_id[] = {
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{ .compatible = "qcom,q6core" },
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{},
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};
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MODULE_DEVICE_TABLE(of, q6core_device_id);
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#endif
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static struct apr_driver qcom_q6core_driver = {
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.probe = q6core_probe,
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.remove = q6core_exit,
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.callback = q6core_callback,
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.driver = {
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.name = "qcom-q6core",
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.of_match_table = of_match_ptr(q6core_device_id),
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},
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};
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module_apr_driver(qcom_q6core_driver);
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MODULE_DESCRIPTION("q6 core");
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MODULE_LICENSE("GPL v2");
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