From: Rander Wang rander.wang@linux.intel.com
Support IPC on Intel Cannonlake platform.
Signed-off-by: Rander Wang rander.wang@linux.intel.com --- src/ipc/Makefile.am | 8 ++ src/ipc/cnl-ipc.c | 212 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 220 insertions(+) create mode 100644 src/ipc/cnl-ipc.c
diff --git a/src/ipc/Makefile.am b/src/ipc/Makefile.am index 8438b70..bd83f60 100644 --- a/src/ipc/Makefile.am +++ b/src/ipc/Makefile.am @@ -42,6 +42,14 @@ libipc_a_SOURCES = \ dma-copy.c endif
+if BUILD_CANNONLAKE +libipc_a_SOURCES = \ + ipc.c \ + intel-ipc.c \ + cnl-ipc.c \ + dma-copy.c +endif + libipc_a_CFLAGS = \ $(ARCH_CFLAGS) \ $(ARCH_INCDIR) \ diff --git a/src/ipc/cnl-ipc.c b/src/ipc/cnl-ipc.c new file mode 100644 index 0000000..cd5e825 --- /dev/null +++ b/src/ipc/cnl-ipc.c @@ -0,0 +1,212 @@ +/* + * Copyright (c) 2017, 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 + * Keyon Jie yang.jie@linux.intel.com + Rander Wang rander.wang@intel.com + */ + +#include <reef/debug.h> +#include <reef/timer.h> +#include <reef/interrupt.h> +#include <reef/ipc.h> +#include <reef/mailbox.h> +#include <reef/reef.h> +#include <reef/stream.h> +#include <reef/dai.h> +#include <reef/dma.h> +#include <reef/alloc.h> +#include <reef/wait.h> +#include <reef/trace.h> +#include <reef/ssp.h> +#include <platform/interrupt.h> +#include <platform/mailbox.h> +#include <platform/shim.h> +#include <platform/dma.h> +#include <platform/platform.h> +#include <reef/audio/component.h> +#include <reef/audio/pipeline.h> +#include <uapi/ipc.h> +#include <reef/intel-ipc.h> + +extern struct ipc *_ipc; + +/* test code to check working IRQ */ +static void irq_handler(void *arg) +{ + uint32_t dipctdr; + uint32_t dipcida; + uint32_t msg = 0; + + trace_ipc("IRQ"); + + dipctdr = ipc_read(IPC_DIPCTDR); + dipcida = ipc_read(IPC_DIPCIDA); + + /* new message from host */ + if (dipctdr & IPC_DIPCTDR_BUSY) { + trace_ipc("Nms"); + + /* mask Busy interrupt */ + ipc_write(IPC_DIPCCTL, ipc_read(IPC_DIPCCTL) & ~IPC_DIPCCTL_IPCTBIE); + + msg = dipctdr & IPC_DIPCTDR_MSG_MASK; + + /* 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 = msg; + _ipc->host_pending = 1; + } + + /* reply message(done) from host */ + if (dipcida & IPC_DIPCIDA_DONE) { + trace_ipc("Rpy"); + /* mask Done interrupt */ + ipc_write(IPC_DIPCCTL, ipc_read(IPC_DIPCCTL) & ~IPC_DIPCCTL_IPCIDIE); + + /* clear DONE bit - tell host we have completed the operation */ + ipc_write(IPC_DIPCIDA, ipc_read(IPC_DIPCIDA) |IPC_DIPCIDA_DONE); + + /* unmask Done interrupt */ + ipc_write(IPC_DIPCCTL, ipc_read(IPC_DIPCCTL) | IPC_DIPCCTL_IPCIDIE); + } + +} + +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; + + trace_ipc("Cmd"); + + /* perform command and return any error */ + err = ipc_cmd(); + if (err > 0) { + goto done; /* reply created and copied by cmd() */ + } else if (err < 0) { + /* send std error reply */ + reply.error = err; + } else if (err == 0) { + /* send std reply */ + reply.error = 0; + } + + /* 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; + + /* write 1 to clear busy, and trigger interrupt to host*/ + ipc_write(IPC_DIPCTDR, ipc_read(IPC_DIPCTDR) |IPC_DIPCTDR_BUSY); + ipc_write(IPC_DIPCTDA, ipc_read(IPC_DIPCTDA) |IPC_DIPCTDA_BUSY ); + + /* unmask Busy interrupt */ + ipc_write(IPC_DIPCCTL, ipc_read(IPC_DIPCCTL) | IPC_DIPCCTL_IPCTBIE); + + // TODO: signal audio work to enter D3 in normal context + /* are we about to enter D3 ? */ + if (iipc->pm_prepare_D3) { + while (1) + 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; + } + + /* 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 */ + ipc_write(IPC_DIPCIDD, 0); + ipc_write(IPC_DIPCIDR, 0x80000000 | msg->header); + +out: + spin_unlock_irq(&ipc->lock, flags); +} + +int platform_ipc_init(struct ipc *ipc) +{ + struct intel_ipc_data *iipc; + int i; + + _ipc = ipc; + + /* init ipc data */ + iipc = rzalloc(RZONE_SYS, RFLAGS_NONE, 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 = rballoc(RZONE_SYS, RFLAGS_NONE, + HOST_PAGE_SIZE); + if (iipc->page_table) + bzero(iipc->page_table, HOST_PAGE_SIZE); + + /* dma */ + iipc->dmac0 = dma_get(DMA_GP_LP_DMAC0); + + /* PM */ + iipc->pm_prepare_D3 = 0; + + /* configure interrupt */ + interrupt_register(PLATFORM_IPC_INTERUPT, irq_handler, NULL); + interrupt_enable(PLATFORM_IPC_INTERUPT); + + /* enable IPC interrupts from host */ + ipc_write(IPC_DIPCCTL, IPC_DIPCCTL_IPCIDIE | IPC_DIPCCTL_IPCTBIE); + + return 0; +}