| /* |
| * Copyright (c) 2016, Intel Corporation |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * * Neither the name of the Intel Corporation nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| * |
| * Author: Liam Girdwood <liam.r.girdwood@linux.intel.com> |
| */ |
| |
| #include <sof/debug.h> |
| #include <sof/timer.h> |
| #include <sof/interrupt.h> |
| #include <sof/ipc.h> |
| #include <sof/mailbox.h> |
| #include <sof/sof.h> |
| #include <sof/stream.h> |
| #include <sof/dai.h> |
| #include <sof/dma.h> |
| #include <sof/alloc.h> |
| #include <sof/wait.h> |
| #include <sof/trace.h> |
| #include <sof/ssp.h> |
| #include <platform/interrupt.h> |
| #include <platform/mailbox.h> |
| #include <platform/shim.h> |
| #include <platform/dma.h> |
| #include <platform/platform.h> |
| #include <sof/audio/component.h> |
| #include <sof/audio/pipeline.h> |
| #include <sof/panic.h> |
| #include <uapi/ipc.h> |
| #include <sof/intel-ipc.h> |
| |
| extern struct ipc *_ipc; |
| |
| static void do_notify(void) |
| { |
| uint32_t flags; |
| struct ipc_msg *msg; |
| |
| tracev_ipc("Not"); |
| |
| spin_lock_irq(&_ipc->lock, flags); |
| msg = _ipc->dsp_msg; |
| if (msg == NULL) |
| goto out; |
| |
| /* copy the data returned from DSP */ |
| if (msg->rx_size && msg->rx_size < SOF_IPC_MSG_MAX_SIZE) |
| mailbox_dspbox_read(msg->rx_data, 0, msg->rx_size); |
| |
| /* any callback ? */ |
| if (msg->cb) |
| msg->cb(msg->cb_data, msg->rx_data); |
| |
| list_item_append(&msg->list, &_ipc->empty_list); |
| |
| out: |
| spin_unlock_irq(&_ipc->lock, flags); |
| |
| /* clear DONE bit - tell Host we have completed */ |
| shim_write(SHIM_IPCD, 0); |
| |
| /* unmask Done interrupt */ |
| shim_write(SHIM_IMRD, shim_read(SHIM_IMRD) & ~SHIM_IMRD_DONE); |
| } |
| |
| static void irq_handler(void *arg) |
| { |
| uint32_t isr; |
| |
| tracev_ipc("IRQ"); |
| |
| /* Interrupt arrived, check src */ |
| isr = shim_read(SHIM_ISRD); |
| |
| if (isr & SHIM_ISRD_DONE) { |
| |
| /* Mask Done interrupt before return */ |
| shim_write(SHIM_IMRD, shim_read(SHIM_IMRD) | SHIM_IMRD_DONE); |
| interrupt_clear(PLATFORM_IPC_INTERUPT); |
| do_notify(); |
| } |
| |
| if (isr & SHIM_ISRD_BUSY) { |
| |
| /* Mask Busy interrupt before return */ |
| shim_write(SHIM_IMRD, shim_read(SHIM_IMRD) | SHIM_IMRD_BUSY); |
| interrupt_clear(PLATFORM_IPC_INTERUPT); |
| |
| /* TODO: place message in Q and process later */ |
| /* It's not Q ATM, may overwrite */ |
| if (_ipc->host_pending) |
| trace_ipc_error("Pen"); |
| |
| _ipc->host_msg = shim_read(SHIM_IPCX); |
| _ipc->host_pending = 1; |
| } |
| } |
| |
| void ipc_platform_do_cmd(struct ipc *ipc) |
| { |
| struct intel_ipc_data *iipc = ipc_get_drvdata(ipc); |
| struct sof_ipc_reply reply; |
| int32_t err; |
| |
| tracev_ipc("Cmd"); |
| |
| /* perform command and return any error */ |
| err = ipc_cmd(); |
| if (err > 0) { |
| goto done; /* reply created and copied by cmd() */ |
| } else { |
| /* send std error reply */ |
| reply.error = err; |
| } |
| |
| /* send std error/ok reply */ |
| reply.hdr.cmd = SOF_IPC_GLB_REPLY; |
| reply.hdr.size = sizeof(reply); |
| mailbox_hostbox_write(0, &reply, sizeof(reply)); |
| |
| done: |
| ipc->host_pending = 0; |
| |
| /* clear BUSY bit and set DONE bit - accept new messages */ |
| shim_write(SHIM_IPCX, SHIM_IPCX_DONE); |
| |
| /* unmask busy interrupt */ |
| shim_write(SHIM_IMRD, shim_read(SHIM_IMRD) & ~SHIM_IMRD_BUSY); |
| |
| // TODO: signal audio work to enter D3 in normal context |
| /* are we about to enter D3 ? */ |
| if (iipc->pm_prepare_D3) { |
| while (1) { |
| trace_ipc("pme"); |
| wait_for_interrupt(0); |
| } |
| } |
| |
| tracev_ipc("CmD"); |
| } |
| |
| void ipc_platform_send_msg(struct ipc *ipc) |
| { |
| struct ipc_msg *msg; |
| uint32_t flags; |
| |
| spin_lock_irq(&ipc->lock, flags); |
| |
| /* any messages to send ? */ |
| if (list_is_empty(&ipc->msg_list)) { |
| ipc->dsp_pending = 0; |
| goto out; |
| } |
| |
| /* can't send nofication when one is in progress */ |
| if (shim_read(SHIM_IPCD) & (SHIM_IPCD_BUSY | SHIM_IPCD_DONE)) |
| goto out; |
| |
| /* now send the message */ |
| msg = list_first_item(&ipc->msg_list, struct ipc_msg, list); |
| mailbox_dspbox_write(0, msg->tx_data, msg->tx_size); |
| list_item_del(&msg->list); |
| ipc->dsp_msg = msg; |
| tracev_ipc("Msg"); |
| |
| /* now interrupt host to tell it we have message sent */ |
| shim_write(SHIM_IPCD, SHIM_IPCD_BUSY); |
| |
| list_item_append(&msg->list, &ipc->empty_list); |
| |
| out: |
| spin_unlock_irq(&ipc->lock, flags); |
| } |
| |
| int platform_ipc_init(struct ipc *ipc) |
| { |
| struct intel_ipc_data *iipc; |
| uint32_t imrd, dir, caps, dev; |
| int i; |
| |
| _ipc = ipc; |
| |
| /* init ipc data */ |
| iipc = rzalloc(RZONE_SYS, SOF_MEM_CAPS_RAM, |
| sizeof(struct intel_ipc_data)); |
| ipc_set_drvdata(_ipc, iipc); |
| _ipc->dsp_msg = NULL; |
| list_init(&ipc->empty_list); |
| list_init(&ipc->msg_list); |
| spinlock_init(&ipc->lock); |
| |
| for (i = 0; i < MSG_QUEUE_SIZE; i++) |
| list_item_prepend(&ipc->message[i].list, &ipc->empty_list); |
| |
| /* allocate page table buffer */ |
| iipc->page_table = rzalloc(RZONE_SYS, SOF_MEM_CAPS_RAM, |
| PLATFORM_PAGE_TABLE_SIZE); |
| if (iipc->page_table) |
| bzero(iipc->page_table, PLATFORM_PAGE_TABLE_SIZE); |
| |
| /* request GP DMA with shared access privilege */ |
| caps = 0; |
| dir = DMA_DIR_HMEM_TO_LMEM; |
| dev = DMA_DEV_HOST; |
| iipc->dmac = dma_get(dir, caps, dev, DMA_ACCESS_SHARED); |
| |
| /* PM */ |
| iipc->pm_prepare_D3 = 0; |
| |
| /* configure interrupt */ |
| interrupt_register(PLATFORM_IPC_INTERUPT, irq_handler, NULL); |
| interrupt_enable(PLATFORM_IPC_INTERUPT); |
| |
| /* Unmask Busy and Done interrupts */ |
| imrd = shim_read(SHIM_IMRD); |
| imrd &= ~(SHIM_IMRD_BUSY | SHIM_IMRD_DONE); |
| shim_write(SHIM_IMRD, imrd); |
| |
| return 0; |
| } |
| |