/* arch/arm/mach-msm/qdsp5/adsp.c * * Register/Interrupt access for userspace aDSP library. * * Copyright (c) 2008 QUALCOMM Incorporated * Copyright (C) 2008 Google, Inc. * Author: Iliyan Malchev * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * 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. * */ /* TODO: * - move shareable rpc code outside of adsp.c * - general solution for virt->phys patchup * - queue IDs should be relative to modules * - disallow access to non-associated queues */ #include #include #include #include #include #include #include #include #include static inline void prevent_suspend(void) { } static inline void allow_suspend(void) { } #include #include #include "adsp.h" #define INT_ADSP INT_ADSP_A9_A11 static struct adsp_info adsp_info; static struct msm_rpc_endpoint *rpc_cb_server_client; static struct msm_adsp_module *adsp_modules; static int adsp_open_count; static DEFINE_MUTEX(adsp_open_lock); /* protect interactions with the ADSP command/message queue */ static spinlock_t adsp_cmd_lock; static uint32_t current_image = -1; void adsp_set_image(struct adsp_info *info, uint32_t image) { current_image = image; } /* * Checks whether the module_id is available in the * module_entries table.If module_id is available returns `0`. * If module_id is not available returns `-ENXIO`. */ #if CONFIG_MSM_AMSS_VERSION >= 6350 static int32_t adsp_validate_module(uint32_t module_id) { uint32_t *ptr; uint32_t module_index; uint32_t num_mod_entries; ptr = adsp_info.init_info_ptr->module_entries; num_mod_entries = adsp_info.init_info_ptr->module_table_size; for (module_index = 0; module_index < num_mod_entries; module_index++) if (module_id == ptr[module_index]) return 0; return -ENXIO; } #else static inline int32_t adsp_validate_module(uint32_t module_id) { return 0; } #endif uint32_t adsp_get_module(struct adsp_info *info, uint32_t task) { BUG_ON(current_image == -1UL); return info->task_to_module[current_image][task]; } uint32_t adsp_get_queue_offset(struct adsp_info *info, uint32_t queue_id) { BUG_ON(current_image == -1UL); return info->queue_offset[current_image][queue_id]; } static int rpc_adsp_rtos_app_to_modem(uint32_t cmd, uint32_t module, struct msm_adsp_module *adsp_module) { int rc; struct rpc_adsp_rtos_app_to_modem_args_t rpc_req; struct rpc_reply_hdr *rpc_rsp; msm_rpc_setup_req(&rpc_req.hdr, RPC_ADSP_RTOS_ATOM_PROG, msm_rpc_get_vers(adsp_module->rpc_client), RPC_ADSP_RTOS_APP_TO_MODEM_PROC); rpc_req.gotit = cpu_to_be32(1); rpc_req.cmd = cpu_to_be32(cmd); rpc_req.proc_id = cpu_to_be32(RPC_ADSP_RTOS_PROC_APPS); rpc_req.module = cpu_to_be32(module); rc = msm_rpc_write(adsp_module->rpc_client, &rpc_req, sizeof(rpc_req)); if (rc < 0) { pr_err("adsp: could not send RPC request: %d\n", rc); return rc; } rc = msm_rpc_read(adsp_module->rpc_client, (void **)&rpc_rsp, -1, (5*HZ)); if (rc < 0) { pr_err("adsp: error receiving RPC reply: %d (%d)\n", rc, -ERESTARTSYS); return rc; } if (be32_to_cpu(rpc_rsp->reply_stat) != RPCMSG_REPLYSTAT_ACCEPTED) { pr_err("adsp: RPC call was denied!\n"); kfree(rpc_rsp); return -EPERM; } if (be32_to_cpu(rpc_rsp->data.acc_hdr.accept_stat) != RPC_ACCEPTSTAT_SUCCESS) { pr_err("adsp error: RPC call was not successful (%d)\n", be32_to_cpu(rpc_rsp->data.acc_hdr.accept_stat)); kfree(rpc_rsp); return -EINVAL; } kfree(rpc_rsp); return 0; } #if CONFIG_MSM_AMSS_VERSION >= 6350 static int get_module_index(uint32_t id) { int mod_idx; for (mod_idx = 0; mod_idx < adsp_info.module_count; mod_idx++) if (adsp_info.module[mod_idx].id == id) return mod_idx; return -ENXIO; } #endif static struct msm_adsp_module *find_adsp_module_by_id( struct adsp_info *info, uint32_t id) { if (id > info->max_module_id) { return NULL; } else { #if CONFIG_MSM_AMSS_VERSION >= 6350 id = get_module_index(id); if (id < 0) return NULL; #endif return info->id_to_module[id]; } } static struct msm_adsp_module *find_adsp_module_by_name( struct adsp_info *info, const char *name) { unsigned n; for (n = 0; n < info->module_count; n++) if (!strcmp(name, adsp_modules[n].name)) return adsp_modules + n; return NULL; } static int adsp_rpc_init(struct msm_adsp_module *adsp_module) { /* remove the original connect once compatible support is complete */ adsp_module->rpc_client = msm_rpc_connect( RPC_ADSP_RTOS_ATOM_PROG, RPC_ADSP_RTOS_ATOM_VERS, MSM_RPC_UNINTERRUPTIBLE); if (IS_ERR(adsp_module->rpc_client)) { int rc = PTR_ERR(adsp_module->rpc_client); adsp_module->rpc_client = 0; pr_err("adsp: could not open rpc client: %d\n", rc); return rc; } return 0; } #if CONFIG_MSM_AMSS_VERSION >= 6350 /* * Send RPC_ADSP_RTOS_CMD_GET_INIT_INFO cmd to ARM9 and get * queue offsets and module entries (init info) as part of the event. */ static void msm_get_init_info(void) { int rc; struct rpc_adsp_rtos_app_to_modem_args_t rpc_req; adsp_info.init_info_rpc_client = msm_rpc_connect( RPC_ADSP_RTOS_ATOM_PROG, RPC_ADSP_RTOS_ATOM_VERS, MSM_RPC_UNINTERRUPTIBLE); if (IS_ERR(adsp_info.init_info_rpc_client)) { rc = PTR_ERR(adsp_info.init_info_rpc_client); adsp_info.init_info_rpc_client = 0; pr_err("adsp: could not open rpc client: %d\n", rc); return; } msm_rpc_setup_req(&rpc_req.hdr, RPC_ADSP_RTOS_ATOM_PROG, msm_rpc_get_vers(adsp_info.init_info_rpc_client), RPC_ADSP_RTOS_APP_TO_MODEM_PROC); rpc_req.gotit = cpu_to_be32(1); rpc_req.cmd = cpu_to_be32(RPC_ADSP_RTOS_CMD_GET_INIT_INFO); rpc_req.proc_id = cpu_to_be32(RPC_ADSP_RTOS_PROC_APPS); rpc_req.module = 0; rc = msm_rpc_write(adsp_info.init_info_rpc_client, &rpc_req, sizeof(rpc_req)); if (rc < 0) pr_err("adsp: could not send RPC request: %d\n", rc); } #endif int msm_adsp_get(const char *name, struct msm_adsp_module **out, struct msm_adsp_ops *ops, void *driver_data) { struct msm_adsp_module *module; int rc = 0; #if CONFIG_MSM_AMSS_VERSION >= 6350 static uint32_t init_info_cmd_sent; if (!init_info_cmd_sent) { msm_get_init_info(); init_waitqueue_head(&adsp_info.init_info_wait); rc = wait_event_timeout(adsp_info.init_info_wait, adsp_info.init_info_state == ADSP_STATE_INIT_INFO, 5 * HZ); if (!rc) { pr_info("adsp: INIT_INFO failed\n"); return -ETIMEDOUT; } init_info_cmd_sent++; } #endif module = find_adsp_module_by_name(&adsp_info, name); if (!module) return -ENODEV; mutex_lock(&module->lock); pr_info("adsp: opening module %s\n", module->name); if (module->open_count++ == 0 && module->clk) clk_enable(module->clk); mutex_lock(&adsp_open_lock); if (adsp_open_count++ == 0) { enable_irq(INT_ADSP); prevent_suspend(); } mutex_unlock(&adsp_open_lock); if (module->ops) { rc = -EBUSY; goto done; } rc = adsp_rpc_init(module); if (rc) goto done; module->ops = ops; module->driver_data = driver_data; *out = module; rc = rpc_adsp_rtos_app_to_modem(RPC_ADSP_RTOS_CMD_REGISTER_APP, module->id, module); if (rc) { module->ops = NULL; module->driver_data = NULL; *out = NULL; pr_err("adsp: REGISTER_APP failed\n"); goto done; } pr_info("adsp: module %s has been registered\n", module->name); done: mutex_lock(&adsp_open_lock); if (rc && --adsp_open_count == 0) { disable_irq(INT_ADSP); allow_suspend(); } if (rc && --module->open_count == 0 && module->clk) clk_disable(module->clk); mutex_unlock(&adsp_open_lock); mutex_unlock(&module->lock); return rc; } EXPORT_SYMBOL(msm_adsp_get); static int msm_adsp_disable_locked(struct msm_adsp_module *module); void msm_adsp_put(struct msm_adsp_module *module) { unsigned long flags; mutex_lock(&module->lock); if (--module->open_count == 0 && module->clk) clk_disable(module->clk); if (module->ops) { pr_info("adsp: closing module %s\n", module->name); /* lock to ensure a dsp event cannot be delivered * during or after removal of the ops and driver_data */ spin_lock_irqsave(&adsp_cmd_lock, flags); module->ops = NULL; module->driver_data = NULL; spin_unlock_irqrestore(&adsp_cmd_lock, flags); if (module->state != ADSP_STATE_DISABLED) { pr_info("adsp: disabling module %s\n", module->name); msm_adsp_disable_locked(module); } msm_rpc_close(module->rpc_client); module->rpc_client = 0; if (--adsp_open_count == 0) { disable_irq(INT_ADSP); allow_suspend(); pr_info("adsp: disable interrupt\n"); } } else { pr_info("adsp: module %s is already closed\n", module->name); } mutex_unlock(&module->lock); } EXPORT_SYMBOL(msm_adsp_put); /* this should be common code with rpc_servers.c */ static int rpc_send_accepted_void_reply(struct msm_rpc_endpoint *client, uint32_t xid, uint32_t accept_status) { int rc = 0; uint8_t reply_buf[sizeof(struct rpc_reply_hdr)]; struct rpc_reply_hdr *reply = (struct rpc_reply_hdr *)reply_buf; reply->xid = cpu_to_be32(xid); reply->type = cpu_to_be32(1); /* reply */ reply->reply_stat = cpu_to_be32(RPCMSG_REPLYSTAT_ACCEPTED); reply->data.acc_hdr.accept_stat = cpu_to_be32(accept_status); reply->data.acc_hdr.verf_flavor = 0; reply->data.acc_hdr.verf_length = 0; rc = msm_rpc_write(rpc_cb_server_client, reply_buf, sizeof(reply_buf)); if (rc < 0) pr_err("adsp: could not write RPC response: %d\n", rc); return rc; } int __msm_adsp_write(struct msm_adsp_module *module, unsigned dsp_queue_addr, void *cmd_buf, size_t cmd_size) { uint32_t ctrl_word; uint32_t dsp_q_addr; uint32_t dsp_addr; uint32_t cmd_id = 0; int cnt = 0; int ret_status = 0; unsigned long flags; struct adsp_info *info = module->info; spin_lock_irqsave(&adsp_cmd_lock, flags); if (module->state != ADSP_STATE_ENABLED) { spin_unlock_irqrestore(&adsp_cmd_lock, flags); pr_err("adsp: module %s not enabled before write\n", module->name); return -ENODEV; } if (adsp_validate_module(module->id)) { spin_unlock_irqrestore(&adsp_cmd_lock, flags); pr_info("adsp: module id validation failed %s %d\n", module->name, module->id); return -ENXIO; } dsp_q_addr = adsp_get_queue_offset(info, dsp_queue_addr); dsp_q_addr &= ADSP_RTOS_WRITE_CTRL_WORD_DSP_ADDR_M; /* Poll until the ADSP is ready to accept a command. * Wait for 100us, return error if it's not responding. * If this returns an error, we need to disable ALL modules and * then retry. */ while (((ctrl_word = readl(info->write_ctrl)) & ADSP_RTOS_WRITE_CTRL_WORD_READY_M) != ADSP_RTOS_WRITE_CTRL_WORD_READY_V) { if (cnt > 100) { pr_err("adsp: timeout waiting for DSP write ready\n"); ret_status = -EIO; goto fail; } pr_warning("adsp: waiting for DSP write ready\n"); udelay(1); cnt++; } /* Set the mutex bits */ ctrl_word &= ~(ADSP_RTOS_WRITE_CTRL_WORD_MUTEX_M); ctrl_word |= ADSP_RTOS_WRITE_CTRL_WORD_MUTEX_NAVAIL_V; /* Clear the command bits */ ctrl_word &= ~(ADSP_RTOS_WRITE_CTRL_WORD_CMD_M); /* Set the queue address bits */ ctrl_word &= ~(ADSP_RTOS_WRITE_CTRL_WORD_DSP_ADDR_M); ctrl_word |= dsp_q_addr; writel(ctrl_word, info->write_ctrl); /* Generate an interrupt to the DSP. This notifies the DSP that * we are about to send a command on this particular queue. The * DSP will in response change its state. */ writel(1, info->send_irq); /* Poll until the adsp responds to the interrupt; this does not * generate an interrupt from the adsp. This should happen within * 5ms. */ cnt = 0; while ((readl(info->write_ctrl) & ADSP_RTOS_WRITE_CTRL_WORD_MUTEX_M) == ADSP_RTOS_WRITE_CTRL_WORD_MUTEX_NAVAIL_V) { if (cnt > 5000) { pr_err("adsp: timeout waiting for adsp ack\n"); ret_status = -EIO; goto fail; } udelay(1); cnt++; } /* Read the ctrl word */ ctrl_word = readl(info->write_ctrl); if ((ctrl_word & ADSP_RTOS_WRITE_CTRL_WORD_STATUS_M) != ADSP_RTOS_WRITE_CTRL_WORD_NO_ERR_V) { ret_status = -EAGAIN; goto fail; } /* Ctrl word status bits were 00, no error in the ctrl word */ /* Get the DSP buffer address */ dsp_addr = (ctrl_word & ADSP_RTOS_WRITE_CTRL_WORD_DSP_ADDR_M) + (uint32_t)MSM_AD5_BASE; if (dsp_addr < (uint32_t)(MSM_AD5_BASE + QDSP_RAMC_OFFSET)) { uint16_t *buf_ptr = (uint16_t *) cmd_buf; uint16_t *dsp_addr16 = (uint16_t *)dsp_addr; cmd_size /= sizeof(uint16_t); /* Save the command ID */ cmd_id = (uint32_t) buf_ptr[0]; /* Copy the command to DSP memory */ cmd_size++; while (--cmd_size) *dsp_addr16++ = *buf_ptr++; } else { uint32_t *buf_ptr = (uint32_t *) cmd_buf; uint32_t *dsp_addr32 = (uint32_t *)dsp_addr; cmd_size /= sizeof(uint32_t); /* Save the command ID */ cmd_id = buf_ptr[0]; cmd_size++; while (--cmd_size) *dsp_addr32++ = *buf_ptr++; } /* Set the mutex bits */ ctrl_word &= ~(ADSP_RTOS_WRITE_CTRL_WORD_MUTEX_M); ctrl_word |= ADSP_RTOS_WRITE_CTRL_WORD_MUTEX_NAVAIL_V; /* Set the command bits to write done */ ctrl_word &= ~(ADSP_RTOS_WRITE_CTRL_WORD_CMD_M); ctrl_word |= ADSP_RTOS_WRITE_CTRL_WORD_CMD_WRITE_DONE_V; /* Set the queue address bits */ ctrl_word &= ~(ADSP_RTOS_WRITE_CTRL_WORD_DSP_ADDR_M); ctrl_word |= dsp_q_addr; writel(ctrl_word, info->write_ctrl); /* Generate an interrupt to the DSP. It does not respond with * an interrupt, and we do not need to wait for it to * acknowledge, because it will hold the mutex lock until it's * ready to receive more commands again. */ writel(1, info->send_irq); module->num_commands++; fail: spin_unlock_irqrestore(&adsp_cmd_lock, flags); return ret_status; } EXPORT_SYMBOL(msm_adsp_write); int msm_adsp_write(struct msm_adsp_module *module, unsigned dsp_queue_addr, void *cmd_buf, size_t cmd_size) { int rc, retries = 0; do { rc = __msm_adsp_write(module, dsp_queue_addr, cmd_buf, cmd_size); if (rc == -EAGAIN) udelay(10); } while(rc == -EAGAIN && retries++ < 100); if (retries > 50) pr_warning("adsp: %s command took %d attempts: rc %d\n", module->name, retries, rc); return rc; } #ifdef CONFIG_MSM_ADSP_REPORT_EVENTS static void *modem_event_addr; #if CONFIG_MSM_AMSS_VERSION >= 6350 static void read_modem_event(void *buf, size_t len) { uint32_t *dptr = buf; struct rpc_adsp_rtos_modem_to_app_args_t *sptr; struct adsp_rtos_mp_mtoa_type *pkt_ptr; sptr = modem_event_addr; pkt_ptr = &sptr->mtoa_pkt.adsp_rtos_mp_mtoa_data.mp_mtoa_packet; dptr[0] = be32_to_cpu(sptr->mtoa_pkt.mp_mtoa_header.event); dptr[1] = be32_to_cpu(pkt_ptr->module); dptr[2] = be32_to_cpu(pkt_ptr->image); } #else static void read_modem_event(void *buf, size_t len) { uint32_t *dptr = buf; struct rpc_adsp_rtos_modem_to_app_args_t *sptr = modem_event_addr; dptr[0] = be32_to_cpu(sptr->event); dptr[1] = be32_to_cpu(sptr->module); dptr[2] = be32_to_cpu(sptr->image); } #endif /* CONFIG_MSM_AMSS_VERSION >= 6350 */ #endif /* CONFIG_MSM_ADSP_REPORT_EVENTS */ static void handle_adsp_rtos_mtoa_app(struct rpc_request_hdr *req) { struct rpc_adsp_rtos_modem_to_app_args_t *args = (struct rpc_adsp_rtos_modem_to_app_args_t *)req; uint32_t event; uint32_t proc_id; uint32_t module_id; uint32_t image; struct msm_adsp_module *module; #if CONFIG_MSM_AMSS_VERSION >= 6350 struct adsp_rtos_mp_mtoa_type *pkt_ptr = &args->mtoa_pkt.adsp_rtos_mp_mtoa_data.mp_mtoa_packet; event = be32_to_cpu(args->mtoa_pkt.mp_mtoa_header.event); proc_id = be32_to_cpu(args->mtoa_pkt.mp_mtoa_header.proc_id); module_id = be32_to_cpu(pkt_ptr->module); image = be32_to_cpu(pkt_ptr->image); if (be32_to_cpu(args->mtoa_pkt.desc_field) == RPC_ADSP_RTOS_INIT_INFO) { struct queue_to_offset_type *qptr; struct queue_to_offset_type *qtbl; uint32_t *mptr; uint32_t *mtbl; uint32_t q_idx; uint32_t num_entries; uint32_t entries_per_image; struct adsp_rtos_mp_mtoa_init_info_type *iptr; struct adsp_rtos_mp_mtoa_init_info_type *sptr; int32_t i_no, e_idx; pr_info("adsp:INIT_INFO Event\n"); sptr = &args->mtoa_pkt.adsp_rtos_mp_mtoa_data. mp_mtoa_init_packet; iptr = adsp_info.init_info_ptr; iptr->image_count = be32_to_cpu(sptr->image_count); iptr->num_queue_offsets = be32_to_cpu(sptr->num_queue_offsets); num_entries = iptr->num_queue_offsets; qptr = &sptr->queue_offsets_tbl[0][0]; for (i_no = 0; i_no < iptr->image_count; i_no++) { qtbl = &iptr->queue_offsets_tbl[i_no][0]; for (e_idx = 0; e_idx < num_entries; e_idx++) { qtbl[e_idx].offset = be32_to_cpu(qptr->offset); qtbl[e_idx].queue = be32_to_cpu(qptr->queue); q_idx = be32_to_cpu(qptr->queue); iptr->queue_offsets[i_no][q_idx] = qtbl[e_idx].offset; qptr++; } } num_entries = be32_to_cpu(sptr->num_task_module_entries); iptr->num_task_module_entries = num_entries; entries_per_image = num_entries / iptr->image_count; mptr = &sptr->task_to_module_tbl[0][0]; for (i_no = 0; i_no < iptr->image_count; i_no++) { mtbl = &iptr->task_to_module_tbl[i_no][0]; for (e_idx = 0; e_idx < entries_per_image; e_idx++) { mtbl[e_idx] = be32_to_cpu(*mptr); mptr++; } } iptr->module_table_size = be32_to_cpu(sptr->module_table_size); mptr = &sptr->module_entries[0]; for (i_no = 0; i_no < iptr->module_table_size; i_no++) iptr->module_entries[i_no] = be32_to_cpu(mptr[i_no]); adsp_info.init_info_state = ADSP_STATE_INIT_INFO; rpc_send_accepted_void_reply(rpc_cb_server_client, req->xid, RPC_ACCEPTSTAT_SUCCESS); wake_up(&adsp_info.init_info_wait); return; } #else event = be32_to_cpu(args->event); proc_id = be32_to_cpu(args->proc_id); module_id = be32_to_cpu(args->module); image = be32_to_cpu(args->image); #endif pr_info("adsp: rpc event=%d, proc_id=%d, module=%d, image=%d\n", event, proc_id, module_id, image); module = find_adsp_module_by_id(&adsp_info, module_id); if (!module) { pr_err("adsp: module %d is not supported!\n", module_id); rpc_send_accepted_void_reply(rpc_cb_server_client, req->xid, RPC_ACCEPTSTAT_GARBAGE_ARGS); return; } mutex_lock(&module->lock); switch (event) { case RPC_ADSP_RTOS_MOD_READY: pr_info("adsp: module %s: READY\n", module->name); module->state = ADSP_STATE_ENABLED; wake_up(&module->state_wait); adsp_set_image(module->info, image); break; case RPC_ADSP_RTOS_MOD_DISABLE: pr_info("adsp: module %s: DISABLED\n", module->name); module->state = ADSP_STATE_DISABLED; wake_up(&module->state_wait); break; case RPC_ADSP_RTOS_SERVICE_RESET: pr_info("adsp: module %s: SERVICE_RESET\n", module->name); module->state = ADSP_STATE_DISABLED; wake_up(&module->state_wait); break; case RPC_ADSP_RTOS_CMD_SUCCESS: pr_info("adsp: module %s: CMD_SUCCESS\n", module->name); break; case RPC_ADSP_RTOS_CMD_FAIL: pr_info("adsp: module %s: CMD_FAIL\n", module->name); break; #if CONFIG_MSM_AMSS_VERSION >= 6350 case RPC_ADSP_RTOS_DISABLE_FAIL: pr_info("adsp: module %s: DISABLE_FAIL\n", module->name); break; #endif default: pr_info("adsp: unknown event %d\n", event); rpc_send_accepted_void_reply(rpc_cb_server_client, req->xid, RPC_ACCEPTSTAT_GARBAGE_ARGS); mutex_unlock(&module->lock); return; } rpc_send_accepted_void_reply(rpc_cb_server_client, req->xid, RPC_ACCEPTSTAT_SUCCESS); mutex_unlock(&module->lock); #ifdef CONFIG_MSM_ADSP_REPORT_EVENTS modem_event_addr = (uint32_t *)req; module->ops->event(module->driver_data, EVENT_MSG_ID, EVENT_LEN, read_modem_event); #endif } static int handle_adsp_rtos_mtoa(struct rpc_request_hdr *req) { switch (req->procedure) { case RPC_ADSP_RTOS_MTOA_NULL_PROC: rpc_send_accepted_void_reply(rpc_cb_server_client, req->xid, RPC_ACCEPTSTAT_SUCCESS); break; case RPC_ADSP_RTOS_MODEM_TO_APP_PROC: handle_adsp_rtos_mtoa_app(req); break; default: pr_err("adsp: unknowned proc %d\n", req->procedure); rpc_send_accepted_void_reply( rpc_cb_server_client, req->xid, RPC_ACCEPTSTAT_PROC_UNAVAIL); break; } return 0; } /* this should be common code with rpc_servers.c */ static int adsp_rpc_thread(void *data) { void *buffer; struct rpc_request_hdr *req; int rc; do { rc = msm_rpc_read(rpc_cb_server_client, &buffer, -1, -1); if (rc < 0) { pr_err("adsp: could not read rpc: %d\n", rc); break; } req = (struct rpc_request_hdr *)buffer; req->type = be32_to_cpu(req->type); req->xid = be32_to_cpu(req->xid); req->rpc_vers = be32_to_cpu(req->rpc_vers); req->prog = be32_to_cpu(req->prog); req->vers = be32_to_cpu(req->vers); req->procedure = be32_to_cpu(req->procedure); if (req->type != 0) goto bad_rpc; if (req->rpc_vers != 2) goto bad_rpc; if (req->prog != RPC_ADSP_RTOS_MTOA_PROG) goto bad_rpc; if (req->vers != RPC_ADSP_RTOS_MTOA_VERS) goto bad_rpc; handle_adsp_rtos_mtoa(req); kfree(buffer); continue; bad_rpc: pr_err("adsp: bogus rpc from modem\n"); kfree(buffer); } while (1); do_exit(0); } static size_t read_event_size; static void *read_event_addr; static void read_event_16(void *buf, size_t len) { uint16_t *dst = buf; uint16_t *src = read_event_addr; len /= 2; if (len > read_event_size) len = read_event_size; while (len--) *dst++ = *src++; } static void read_event_32(void *buf, size_t len) { uint32_t *dst = buf; uint32_t *src = read_event_addr; len /= 2; if (len > read_event_size) len = read_event_size; while (len--) *dst++ = *src++; } static int adsp_rtos_read_ctrl_word_cmd_tast_to_h_v( struct adsp_info *info, void *dsp_addr) { struct msm_adsp_module *module; unsigned rtos_task_id; unsigned msg_id; unsigned msg_length; void (*func)(void *, size_t); if (dsp_addr >= (void *)(MSM_AD5_BASE + QDSP_RAMC_OFFSET)) { uint32_t *dsp_addr32 = dsp_addr; uint32_t tmp = *dsp_addr32++; rtos_task_id = (tmp & ADSP_RTOS_READ_CTRL_WORD_TASK_ID_M) >> 8; msg_id = (tmp & ADSP_RTOS_READ_CTRL_WORD_MSG_ID_M); read_event_size = tmp >> 16; read_event_addr = dsp_addr32; msg_length = read_event_size * sizeof(uint32_t); func = read_event_32; } else { uint16_t *dsp_addr16 = dsp_addr; uint16_t tmp = *dsp_addr16++; rtos_task_id = (tmp & ADSP_RTOS_READ_CTRL_WORD_TASK_ID_M) >> 8; msg_id = tmp & ADSP_RTOS_READ_CTRL_WORD_MSG_ID_M; read_event_size = *dsp_addr16++; read_event_addr = dsp_addr16; msg_length = read_event_size * sizeof(uint16_t); func = read_event_16; } if (rtos_task_id > info->max_task_id) { pr_err("adsp: bogus task id %d\n", rtos_task_id); return 0; } module = find_adsp_module_by_id(info, adsp_get_module(info, rtos_task_id)); if (!module) { pr_err("adsp: no module for task id %d\n", rtos_task_id); return 0; } module->num_events++; if (!module->ops) { pr_err("adsp: module %s is not open\n", module->name); return 0; } module->ops->event(module->driver_data, msg_id, msg_length, func); return 0; } static int adsp_get_event(struct adsp_info *info) { uint32_t ctrl_word; uint32_t ready; void *dsp_addr; uint32_t cmd_type; int cnt; unsigned long flags; int rc = 0; spin_lock_irqsave(&adsp_cmd_lock, flags); /* Whenever the DSP has a message, it updates this control word * and generates an interrupt. When we receive the interrupt, we * read this register to find out what ADSP task the command is * comming from. * * The ADSP should *always* be ready on the first call, but the * irq handler calls us in a loop (to handle back-to-back command * processing), so we give the DSP some time to return to the * ready state. The DSP will not issue another IRQ for events * pending between the first IRQ and the event queue being drained, * unfortunately. */ for (cnt = 0; cnt < 10; cnt++) { ctrl_word = readl(info->read_ctrl); if ((ctrl_word & ADSP_RTOS_READ_CTRL_WORD_FLAG_M) == ADSP_RTOS_READ_CTRL_WORD_FLAG_UP_CONT_V) goto ready; udelay(10); } pr_warning("adsp: not ready after 100uS\n"); rc = -EBUSY; goto done; ready: /* Here we check to see if there are pending messages. If there are * none, we siply return -EAGAIN to indicate that there are no more * messages pending. */ ready = ctrl_word & ADSP_RTOS_READ_CTRL_WORD_READY_M; if ((ready != ADSP_RTOS_READ_CTRL_WORD_READY_V) && (ready != ADSP_RTOS_READ_CTRL_WORD_CONT_V)) { rc = -EAGAIN; goto done; } /* DSP says that there are messages waiting for the host to read */ /* Get the Command Type */ cmd_type = ctrl_word & ADSP_RTOS_READ_CTRL_WORD_CMD_TYPE_M; /* Get the DSP buffer address */ dsp_addr = (void *)((ctrl_word & ADSP_RTOS_READ_CTRL_WORD_DSP_ADDR_M) + (uint32_t)MSM_AD5_BASE); /* We can only handle Task-to-Host messages */ if (cmd_type != ADSP_RTOS_READ_CTRL_WORD_CMD_TASK_TO_H_V) { pr_err("adsp: unknown dsp cmd_type %d\n", cmd_type); rc = -EIO; goto done; } adsp_rtos_read_ctrl_word_cmd_tast_to_h_v(info, dsp_addr); ctrl_word = readl(info->read_ctrl); ctrl_word &= ~ADSP_RTOS_READ_CTRL_WORD_READY_M; /* Write ctrl word to the DSP */ writel(ctrl_word, info->read_ctrl); /* Generate an interrupt to the DSP */ writel(1, info->send_irq); done: spin_unlock_irqrestore(&adsp_cmd_lock, flags); return rc; } static irqreturn_t adsp_irq_handler(int irq, void *data) { struct adsp_info *info = &adsp_info; int cnt = 0; for (cnt = 0; cnt < 10; cnt++) if (adsp_get_event(info) < 0) break; if (cnt > info->event_backlog_max) info->event_backlog_max = cnt; info->events_received += cnt; if (cnt == 10) pr_err("adsp: too many (%d) events for single irq!\n", cnt); return IRQ_HANDLED; } int adsp_set_clkrate(struct msm_adsp_module *module, unsigned long clk_rate) { if (module->clk && clk_rate) return clk_set_rate(module->clk, clk_rate); return -EINVAL; } int msm_adsp_enable(struct msm_adsp_module *module) { int rc = 0; pr_info("msm_adsp_enable() '%s'state[%d] id[%d]\n", module->name, module->state, module->id); mutex_lock(&module->lock); switch (module->state) { case ADSP_STATE_DISABLED: rc = rpc_adsp_rtos_app_to_modem(RPC_ADSP_RTOS_CMD_ENABLE, module->id, module); if (rc) break; module->state = ADSP_STATE_ENABLING; mutex_unlock(&module->lock); rc = wait_event_timeout(module->state_wait, module->state != ADSP_STATE_ENABLING, 1 * HZ); mutex_lock(&module->lock); if (module->state == ADSP_STATE_ENABLED) { rc = 0; } else { pr_err("adsp: module '%s' enable timed out\n", module->name); rc = -ETIMEDOUT; } break; case ADSP_STATE_ENABLING: pr_warning("adsp: module '%s' enable in progress\n", module->name); break; case ADSP_STATE_ENABLED: pr_warning("adsp: module '%s' already enabled\n", module->name); break; case ADSP_STATE_DISABLING: pr_err("adsp: module '%s' disable in progress\n", module->name); rc = -EBUSY; break; } mutex_unlock(&module->lock); return rc; } EXPORT_SYMBOL(msm_adsp_enable); static int msm_adsp_disable_locked(struct msm_adsp_module *module) { int rc = 0; switch (module->state) { case ADSP_STATE_DISABLED: pr_warning("adsp: module '%s' already disabled\n", module->name); break; case ADSP_STATE_ENABLING: case ADSP_STATE_ENABLED: rc = rpc_adsp_rtos_app_to_modem(RPC_ADSP_RTOS_CMD_DISABLE, module->id, module); module->state = ADSP_STATE_DISABLED; } return rc; } int msm_adsp_disable(struct msm_adsp_module *module) { int rc; pr_info("msm_adsp_disable() '%s'\n", module->name); mutex_lock(&module->lock); rc = msm_adsp_disable_locked(module); mutex_unlock(&module->lock); return rc; } EXPORT_SYMBOL(msm_adsp_disable); static int msm_adsp_probe(struct platform_device *pdev) { unsigned count; int rc, i; int max_module_id; pr_info("adsp: probe\n"); #if CONFIG_MSM_AMSS_VERSION >= 6350 adsp_info.init_info_ptr = kzalloc( (sizeof(struct adsp_rtos_mp_mtoa_init_info_type)), GFP_KERNEL); if (!adsp_info.init_info_ptr) return -ENOMEM; #endif rc = adsp_init_info(&adsp_info); if (rc) return rc; adsp_info.send_irq += (uint32_t) MSM_AD5_BASE; adsp_info.read_ctrl += (uint32_t) MSM_AD5_BASE; adsp_info.write_ctrl += (uint32_t) MSM_AD5_BASE; count = adsp_info.module_count; #if CONFIG_MSM_AMSS_VERSION >= 6350 max_module_id = count; #else max_module_id = adsp_info.max_module_id + 1; #endif adsp_modules = kzalloc( sizeof(struct msm_adsp_module) * count + sizeof(void *) * max_module_id, GFP_KERNEL); if (!adsp_modules) return -ENOMEM; adsp_info.id_to_module = (void *) (adsp_modules + count); spin_lock_init(&adsp_cmd_lock); rc = request_irq(INT_ADSP, adsp_irq_handler, IRQF_TRIGGER_RISING, "adsp", 0); if (rc < 0) goto fail_request_irq; disable_irq(INT_ADSP); rpc_cb_server_client = msm_rpc_open(); if (IS_ERR(rpc_cb_server_client)) { rpc_cb_server_client = NULL; rc = PTR_ERR(rpc_cb_server_client); pr_err("adsp: could not create rpc server (%d)\n", rc); goto fail_rpc_open; } rc = msm_rpc_register_server(rpc_cb_server_client, RPC_ADSP_RTOS_MTOA_PROG, RPC_ADSP_RTOS_MTOA_VERS); if (rc) { pr_err("adsp: could not register callback server (%d)\n", rc); goto fail_rpc_register; } /* start the kernel thread to process the callbacks */ kthread_run(adsp_rpc_thread, NULL, "kadspd"); for (i = 0; i < count; i++) { struct msm_adsp_module *mod = adsp_modules + i; mutex_init(&mod->lock); init_waitqueue_head(&mod->state_wait); mod->info = &adsp_info; mod->name = adsp_info.module[i].name; mod->id = adsp_info.module[i].id; if (adsp_info.module[i].clk_name) mod->clk = clk_get(NULL, adsp_info.module[i].clk_name); else mod->clk = NULL; if (mod->clk && adsp_info.module[i].clk_rate) clk_set_rate(mod->clk, adsp_info.module[i].clk_rate); mod->verify_cmd = adsp_info.module[i].verify_cmd; mod->patch_event = adsp_info.module[i].patch_event; INIT_HLIST_HEAD(&mod->pmem_regions); mod->pdev.name = adsp_info.module[i].pdev_name; mod->pdev.id = -1; #if CONFIG_MSM_AMSS_VERSION >= 6350 adsp_info.id_to_module[i] = mod; #else adsp_info.id_to_module[mod->id] = mod; #endif platform_device_register(&mod->pdev); } msm_adsp_publish_cdevs(adsp_modules, count); return 0; fail_rpc_register: msm_rpc_close(rpc_cb_server_client); rpc_cb_server_client = NULL; fail_rpc_open: enable_irq(INT_ADSP); free_irq(INT_ADSP, 0); fail_request_irq: kfree(adsp_modules); #if CONFIG_MSM_AMSS_VERSION >= 6350 kfree(adsp_info.init_info_ptr); #endif return rc; } static struct platform_driver msm_adsp_driver = { .probe = msm_adsp_probe, .driver = { .name = MSM_ADSP_DRIVER_NAME, .owner = THIS_MODULE, }, }; static int __init adsp_init(void) { return platform_driver_register(&msm_adsp_driver); } device_initcall(adsp_init);