#include <linux/device.h>
#include <sound/hda_codec.h>
+#include "messages.h"
struct avs_dev;
+/*
+ * struct avs_dsp_ops - Platform-specific DSP operations
+ *
+ * @power: Power on or off DSP cores
+ * @reset: Enter or exit reset state on DSP cores
+ * @stall: Stall or run DSP cores
+ * @irq_handler: Top half of IPC servicing
+ * @irq_thread: Bottom half of IPC servicing
+ * @int_control: Enable or disable IPC interrupts
+ */
struct avs_dsp_ops {
int (* const power)(struct avs_dev *, u32, bool);
int (* const reset)(struct avs_dev *, u32, bool);
int (* const stall)(struct avs_dev *, u32, bool);
+ irqreturn_t (* const irq_handler)(int, void *);
+ irqreturn_t (* const irq_thread)(int, void *);
+ void (* const int_control)(struct avs_dev *, bool);
};
#define avs_dsp_op(adev, op, ...) \
const u32 core_init_mask; /* used during DSP boot */
const u64 attributes; /* bitmask of AVS_PLATATTR_* */
+ const u32 sram_base_offset;
+ const u32 sram_window_size;
+ const u32 rom_status;
};
/*
void __iomem *dsp_ba;
const struct avs_spec *spec;
+ struct avs_ipc *ipc;
+
+ struct completion fw_ready;
};
/* from hda_bus to avs_dev */
int avs_dsp_core_enable(struct avs_dev *adev, u32 core_mask);
int avs_dsp_core_disable(struct avs_dev *adev, u32 core_mask);
+/* Inter Process Communication */
+
+struct avs_ipc_msg {
+ union {
+ u64 header;
+ union avs_global_msg glb;
+ union avs_reply_msg rsp;
+ };
+ void *data;
+ size_t size;
+};
+
+/*
+ * struct avs_ipc - DSP IPC context
+ *
+ * @dev: PCI device
+ * @rx: Reply message cache
+ * @default_timeout_ms: default message timeout in MS
+ * @ready: whether firmware is ready and communication is open
+ * @rx_completed: whether RX for previously sent TX has been received
+ * @rx_lock: for serializing manipulation of rx_* fields
+ * @msg_lock: for synchronizing request handling
+ * @done_completion: DONE-part of IPC i.e. ROM and ACKs from FW
+ * @busy_completion: BUSY-part of IPC i.e. receiving responses from FW
+ */
+struct avs_ipc {
+ struct device *dev;
+
+ struct avs_ipc_msg rx;
+ u32 default_timeout_ms;
+ bool ready;
+
+ bool rx_completed;
+ spinlock_t rx_lock;
+ struct mutex msg_mutex;
+ struct completion done_completion;
+ struct completion busy_completion;
+};
+
+#define AVS_EIPC EREMOTEIO
+/*
+ * IPC handlers may return positive value (firmware error code) what denotes
+ * successful HOST <-> DSP communication yet failure to process specific request.
+ *
+ * Below macro converts returned value to linux kernel error code.
+ * All IPC callers MUST use it as soon as firmware error code is consumed.
+ */
+#define AVS_IPC_RET(ret) \
+ (((ret) <= 0) ? (ret) : -AVS_EIPC)
+
+static inline void avs_ipc_err(struct avs_dev *adev, struct avs_ipc_msg *tx,
+ const char *name, int error)
+{
+ /*
+ * If IPC channel is blocked e.g.: due to ongoing recovery,
+ * -EPERM error code is expected and thus it's not an actual error.
+ */
+ if (error == -EPERM)
+ dev_dbg(adev->dev, "%s 0x%08x 0x%08x failed: %d\n", name,
+ tx->glb.primary, tx->glb.ext.val, error);
+ else
+ dev_err(adev->dev, "%s 0x%08x 0x%08x failed: %d\n", name,
+ tx->glb.primary, tx->glb.ext.val, error);
+}
+
+irqreturn_t avs_dsp_irq_handler(int irq, void *dev_id);
+irqreturn_t avs_dsp_irq_thread(int irq, void *dev_id);
+void avs_dsp_process_response(struct avs_dev *adev, u64 header);
+int avs_dsp_send_msg_timeout(struct avs_dev *adev,
+ struct avs_ipc_msg *request,
+ struct avs_ipc_msg *reply, int timeout);
+int avs_dsp_send_msg(struct avs_dev *adev,
+ struct avs_ipc_msg *request, struct avs_ipc_msg *reply);
+int avs_dsp_send_rom_msg_timeout(struct avs_dev *adev,
+ struct avs_ipc_msg *request, int timeout);
+int avs_dsp_send_rom_msg(struct avs_dev *adev, struct avs_ipc_msg *request);
+void avs_dsp_interrupt_control(struct avs_dev *adev, bool enable);
+int avs_ipc_init(struct avs_ipc *ipc, struct device *dev);
+void avs_ipc_block(struct avs_ipc *ipc);
+
#endif /* __SOUND_SOC_INTEL_AVS_H */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
+//
+// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
+// Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
+//
+
+#include <linux/slab.h>
+#include <sound/hdaudio_ext.h>
+#include "avs.h"
+#include "messages.h"
+#include "registers.h"
+
+#define AVS_IPC_TIMEOUT_MS 300
+
+static void avs_dsp_receive_rx(struct avs_dev *adev, u64 header)
+{
+ struct avs_ipc *ipc = adev->ipc;
+ union avs_reply_msg msg = AVS_MSG(header);
+
+ ipc->rx.header = header;
+ /* Abort copying payload if request processing was unsuccessful. */
+ if (!msg.status)
+ memcpy_fromio(ipc->rx.data, avs_uplink_addr(adev), ipc->rx.size);
+}
+
+static void avs_dsp_process_notification(struct avs_dev *adev, u64 header)
+{
+ struct avs_notify_mod_data mod_data;
+ union avs_notify_msg msg = AVS_MSG(header);
+ size_t data_size = 0;
+ void *data = NULL;
+
+ /* Ignore spurious notifications until handshake is established. */
+ if (!adev->ipc->ready && msg.notify_msg_type != AVS_NOTIFY_FW_READY) {
+ dev_dbg(adev->dev, "FW not ready, skip notification: 0x%08x\n", msg.primary);
+ return;
+ }
+
+ /* Calculate notification payload size. */
+ switch (msg.notify_msg_type) {
+ case AVS_NOTIFY_FW_READY:
+ break;
+
+ case AVS_NOTIFY_PHRASE_DETECTED:
+ data_size = sizeof(struct avs_notify_voice_data);
+ break;
+
+ case AVS_NOTIFY_RESOURCE_EVENT:
+ data_size = sizeof(struct avs_notify_res_data);
+ break;
+
+ case AVS_NOTIFY_MODULE_EVENT:
+ /* To know the total payload size, header needs to be read first. */
+ memcpy_fromio(&mod_data, avs_uplink_addr(adev), sizeof(mod_data));
+ data_size = sizeof(mod_data) + mod_data.data_size;
+ break;
+
+ default:
+ dev_info(adev->dev, "unknown notification: 0x%08x\n", msg.primary);
+ break;
+ }
+
+ if (data_size) {
+ data = kmalloc(data_size, GFP_KERNEL);
+ if (!data)
+ return;
+
+ memcpy_fromio(data, avs_uplink_addr(adev), data_size);
+ }
+
+ /* Perform notification-specific operations. */
+ switch (msg.notify_msg_type) {
+ case AVS_NOTIFY_FW_READY:
+ dev_dbg(adev->dev, "FW READY 0x%08x\n", msg.primary);
+ adev->ipc->ready = true;
+ complete(&adev->fw_ready);
+ break;
+
+ default:
+ break;
+ }
+
+ kfree(data);
+}
+
+void avs_dsp_process_response(struct avs_dev *adev, u64 header)
+{
+ struct avs_ipc *ipc = adev->ipc;
+
+ /*
+ * Response may either be solicited - a reply for a request that has
+ * been sent beforehand - or unsolicited (notification).
+ */
+ if (avs_msg_is_reply(header)) {
+ /* Response processing is invoked from IRQ thread. */
+ spin_lock_irq(&ipc->rx_lock);
+ avs_dsp_receive_rx(adev, header);
+ ipc->rx_completed = true;
+ spin_unlock_irq(&ipc->rx_lock);
+ } else {
+ avs_dsp_process_notification(adev, header);
+ }
+
+ complete(&ipc->busy_completion);
+}
+
+irqreturn_t avs_dsp_irq_handler(int irq, void *dev_id)
+{
+ struct avs_dev *adev = dev_id;
+ struct avs_ipc *ipc = adev->ipc;
+ u32 adspis, hipc_rsp, hipc_ack;
+ irqreturn_t ret = IRQ_NONE;
+
+ adspis = snd_hdac_adsp_readl(adev, AVS_ADSP_REG_ADSPIS);
+ if (adspis == UINT_MAX || !(adspis & AVS_ADSP_ADSPIS_IPC))
+ return ret;
+
+ hipc_ack = snd_hdac_adsp_readl(adev, SKL_ADSP_REG_HIPCIE);
+ hipc_rsp = snd_hdac_adsp_readl(adev, SKL_ADSP_REG_HIPCT);
+
+ /* DSP acked host's request */
+ if (hipc_ack & SKL_ADSP_HIPCIE_DONE) {
+ /*
+ * As an extra precaution, mask done interrupt. Code executed
+ * due to complete() found below does not assume any masking.
+ */
+ snd_hdac_adsp_updatel(adev, SKL_ADSP_REG_HIPCCTL,
+ AVS_ADSP_HIPCCTL_DONE, 0);
+
+ complete(&ipc->done_completion);
+
+ /* tell DSP it has our attention */
+ snd_hdac_adsp_updatel(adev, SKL_ADSP_REG_HIPCIE,
+ SKL_ADSP_HIPCIE_DONE,
+ SKL_ADSP_HIPCIE_DONE);
+ /* unmask done interrupt */
+ snd_hdac_adsp_updatel(adev, SKL_ADSP_REG_HIPCCTL,
+ AVS_ADSP_HIPCCTL_DONE,
+ AVS_ADSP_HIPCCTL_DONE);
+ ret = IRQ_HANDLED;
+ }
+
+ /* DSP sent new response to process */
+ if (hipc_rsp & SKL_ADSP_HIPCT_BUSY) {
+ /* mask busy interrupt */
+ snd_hdac_adsp_updatel(adev, SKL_ADSP_REG_HIPCCTL,
+ AVS_ADSP_HIPCCTL_BUSY, 0);
+
+ ret = IRQ_WAKE_THREAD;
+ }
+
+ return ret;
+}
+
+irqreturn_t avs_dsp_irq_thread(int irq, void *dev_id)
+{
+ struct avs_dev *adev = dev_id;
+ union avs_reply_msg msg;
+ u32 hipct, hipcte;
+
+ hipct = snd_hdac_adsp_readl(adev, SKL_ADSP_REG_HIPCT);
+ hipcte = snd_hdac_adsp_readl(adev, SKL_ADSP_REG_HIPCTE);
+
+ /* ensure DSP sent new response to process */
+ if (!(hipct & SKL_ADSP_HIPCT_BUSY))
+ return IRQ_NONE;
+
+ msg.primary = hipct;
+ msg.ext.val = hipcte;
+ avs_dsp_process_response(adev, msg.val);
+
+ /* tell DSP we accepted its message */
+ snd_hdac_adsp_updatel(adev, SKL_ADSP_REG_HIPCT,
+ SKL_ADSP_HIPCT_BUSY, SKL_ADSP_HIPCT_BUSY);
+ /* unmask busy interrupt */
+ snd_hdac_adsp_updatel(adev, SKL_ADSP_REG_HIPCCTL,
+ AVS_ADSP_HIPCCTL_BUSY, AVS_ADSP_HIPCCTL_BUSY);
+
+ return IRQ_HANDLED;
+}
+
+static bool avs_ipc_is_busy(struct avs_ipc *ipc)
+{
+ struct avs_dev *adev = to_avs_dev(ipc->dev);
+ u32 hipc_rsp;
+
+ hipc_rsp = snd_hdac_adsp_readl(adev, SKL_ADSP_REG_HIPCT);
+ return hipc_rsp & SKL_ADSP_HIPCT_BUSY;
+}
+
+static int avs_ipc_wait_busy_completion(struct avs_ipc *ipc, int timeout)
+{
+ u32 repeats_left = 128; /* to avoid infinite looping */
+ int ret;
+
+again:
+ ret = wait_for_completion_timeout(&ipc->busy_completion, msecs_to_jiffies(timeout));
+
+ /* DSP could be unresponsive at this point. */
+ if (!ipc->ready)
+ return -EPERM;
+
+ if (!ret) {
+ if (!avs_ipc_is_busy(ipc))
+ return -ETIMEDOUT;
+ /*
+ * Firmware did its job, either notification or reply
+ * has been received - now wait until it's processed.
+ */
+ wait_for_completion_killable(&ipc->busy_completion);
+ }
+
+ /* Ongoing notification's bottom-half may cause early wakeup */
+ spin_lock(&ipc->rx_lock);
+ if (!ipc->rx_completed) {
+ if (repeats_left) {
+ /* Reply delayed due to notification. */
+ repeats_left--;
+ reinit_completion(&ipc->busy_completion);
+ spin_unlock(&ipc->rx_lock);
+ goto again;
+ }
+
+ spin_unlock(&ipc->rx_lock);
+ return -ETIMEDOUT;
+ }
+
+ spin_unlock(&ipc->rx_lock);
+ return 0;
+}
+
+static void avs_ipc_msg_init(struct avs_ipc *ipc, struct avs_ipc_msg *reply)
+{
+ lockdep_assert_held(&ipc->rx_lock);
+
+ ipc->rx.header = 0;
+ ipc->rx.size = reply ? reply->size : 0;
+ ipc->rx_completed = false;
+
+ reinit_completion(&ipc->done_completion);
+ reinit_completion(&ipc->busy_completion);
+}
+
+static void avs_dsp_send_tx(struct avs_dev *adev, struct avs_ipc_msg *tx)
+{
+ tx->header |= SKL_ADSP_HIPCI_BUSY;
+
+ if (tx->size)
+ memcpy_toio(avs_downlink_addr(adev), tx->data, tx->size);
+ snd_hdac_adsp_writel(adev, SKL_ADSP_REG_HIPCIE, tx->header >> 32);
+ snd_hdac_adsp_writel(adev, SKL_ADSP_REG_HIPCI, tx->header & UINT_MAX);
+}
+
+static int avs_dsp_do_send_msg(struct avs_dev *adev, struct avs_ipc_msg *request,
+ struct avs_ipc_msg *reply, int timeout)
+{
+ struct avs_ipc *ipc = adev->ipc;
+ int ret;
+
+ if (!ipc->ready)
+ return -EPERM;
+
+ mutex_lock(&ipc->msg_mutex);
+
+ spin_lock(&ipc->rx_lock);
+ avs_ipc_msg_init(ipc, reply);
+ avs_dsp_send_tx(adev, request);
+ spin_unlock(&ipc->rx_lock);
+
+ ret = avs_ipc_wait_busy_completion(ipc, timeout);
+ if (ret) {
+ if (ret == -ETIMEDOUT) {
+ dev_crit(adev->dev, "communication severed: %d, rebooting dsp..\n", ret);
+
+ avs_ipc_block(ipc);
+ }
+ goto exit;
+ }
+
+ ret = ipc->rx.rsp.status;
+ if (reply) {
+ reply->header = ipc->rx.header;
+ if (reply->data && ipc->rx.size)
+ memcpy(reply->data, ipc->rx.data, reply->size);
+ }
+
+exit:
+ mutex_unlock(&ipc->msg_mutex);
+ return ret;
+}
+
+int avs_dsp_send_msg_timeout(struct avs_dev *adev, struct avs_ipc_msg *request,
+ struct avs_ipc_msg *reply, int timeout)
+{
+ return avs_dsp_do_send_msg(adev, request, reply, timeout);
+}
+
+int avs_dsp_send_msg(struct avs_dev *adev, struct avs_ipc_msg *request,
+ struct avs_ipc_msg *reply)
+{
+ return avs_dsp_send_msg_timeout(adev, request, reply, adev->ipc->default_timeout_ms);
+}
+
+static int avs_dsp_do_send_rom_msg(struct avs_dev *adev, struct avs_ipc_msg *request, int timeout)
+{
+ struct avs_ipc *ipc = adev->ipc;
+ int ret;
+
+ mutex_lock(&ipc->msg_mutex);
+
+ spin_lock(&ipc->rx_lock);
+ avs_ipc_msg_init(ipc, NULL);
+ avs_dsp_send_tx(adev, request);
+ spin_unlock(&ipc->rx_lock);
+
+ /* ROM messages must be sent before main core is unstalled */
+ ret = avs_dsp_op(adev, stall, AVS_MAIN_CORE_MASK, false);
+ if (!ret) {
+ ret = wait_for_completion_timeout(&ipc->done_completion, msecs_to_jiffies(timeout));
+ ret = ret ? 0 : -ETIMEDOUT;
+ }
+
+ mutex_unlock(&ipc->msg_mutex);
+
+ return ret;
+}
+
+int avs_dsp_send_rom_msg_timeout(struct avs_dev *adev, struct avs_ipc_msg *request, int timeout)
+{
+ return avs_dsp_do_send_rom_msg(adev, request, timeout);
+}
+
+int avs_dsp_send_rom_msg(struct avs_dev *adev, struct avs_ipc_msg *request)
+{
+ return avs_dsp_send_rom_msg_timeout(adev, request, adev->ipc->default_timeout_ms);
+}
+
+void avs_dsp_interrupt_control(struct avs_dev *adev, bool enable)
+{
+ u32 value, mask;
+
+ /*
+ * No particular bit setting order. All of these are required
+ * to have a functional SW <-> FW communication.
+ */
+ value = enable ? AVS_ADSP_ADSPIC_IPC : 0;
+ snd_hdac_adsp_updatel(adev, AVS_ADSP_REG_ADSPIC, AVS_ADSP_ADSPIC_IPC, value);
+
+ mask = AVS_ADSP_HIPCCTL_DONE | AVS_ADSP_HIPCCTL_BUSY;
+ value = enable ? mask : 0;
+ snd_hdac_adsp_updatel(adev, SKL_ADSP_REG_HIPCCTL, mask, value);
+}
+
+int avs_ipc_init(struct avs_ipc *ipc, struct device *dev)
+{
+ ipc->rx.data = devm_kzalloc(dev, AVS_MAILBOX_SIZE, GFP_KERNEL);
+ if (!ipc->rx.data)
+ return -ENOMEM;
+
+ ipc->dev = dev;
+ ipc->ready = false;
+ ipc->default_timeout_ms = AVS_IPC_TIMEOUT_MS;
+ init_completion(&ipc->done_completion);
+ init_completion(&ipc->busy_completion);
+ spin_lock_init(&ipc->rx_lock);
+ mutex_init(&ipc->msg_mutex);
+
+ return 0;
+}
+
+void avs_ipc_block(struct avs_ipc *ipc)
+{
+ ipc->ready = false;
+}
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
+ *
+ * Authors: Cezary Rojewski <cezary.rojewski@intel.com>
+ * Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
+ */
+
+#ifndef __SOUND_SOC_INTEL_AVS_MSGS_H
+#define __SOUND_SOC_INTEL_AVS_MSGS_H
+
+struct avs_dev;
+
+#define AVS_MAILBOX_SIZE 4096
+
+enum avs_msg_target {
+ AVS_FW_GEN_MSG = 0,
+ AVS_MOD_MSG = 1
+};
+
+enum avs_msg_direction {
+ AVS_MSG_REQUEST = 0,
+ AVS_MSG_REPLY = 1
+};
+
+enum avs_global_msg_type {
+ AVS_GLB_NOTIFICATION = 27,
+};
+
+union avs_global_msg {
+ u64 val;
+ struct {
+ union {
+ u32 primary;
+ struct {
+ u32 rsvd:24;
+ u32 global_msg_type:5;
+ u32 msg_direction:1;
+ u32 msg_target:1;
+ };
+ };
+ union {
+ u32 val;
+ } ext;
+ };
+} __packed;
+
+struct avs_tlv {
+ u32 type;
+ u32 length;
+ u32 value[];
+} __packed;
+
+union avs_module_msg {
+ u64 val;
+ struct {
+ union {
+ u32 primary;
+ struct {
+ u32 module_id:16;
+ u32 instance_id:8;
+ u32 module_msg_type:5;
+ u32 msg_direction:1;
+ u32 msg_target:1;
+ };
+ };
+ union {
+ u32 val;
+ } ext;
+ };
+} __packed;
+
+union avs_reply_msg {
+ u64 val;
+ struct {
+ union {
+ u32 primary;
+ struct {
+ u32 status:24;
+ u32 global_msg_type:5;
+ u32 msg_direction:1;
+ u32 msg_target:1;
+ };
+ };
+ union {
+ u32 val;
+ } ext;
+ };
+} __packed;
+
+enum avs_notify_msg_type {
+ AVS_NOTIFY_PHRASE_DETECTED = 4,
+ AVS_NOTIFY_RESOURCE_EVENT = 5,
+ AVS_NOTIFY_FW_READY = 8,
+ AVS_NOTIFY_MODULE_EVENT = 12,
+};
+
+union avs_notify_msg {
+ u64 val;
+ struct {
+ union {
+ u32 primary;
+ struct {
+ u32 rsvd:16;
+ u32 notify_msg_type:8;
+ u32 global_msg_type:5;
+ u32 msg_direction:1;
+ u32 msg_target:1;
+ };
+ };
+ union {
+ u32 val;
+ } ext;
+ };
+} __packed;
+
+#define AVS_MSG(hdr) { .val = hdr }
+
+#define AVS_GLOBAL_REQUEST(msg_type) \
+{ \
+ .global_msg_type = AVS_GLB_##msg_type, \
+ .msg_direction = AVS_MSG_REQUEST, \
+ .msg_target = AVS_FW_GEN_MSG, \
+}
+
+#define AVS_MODULE_REQUEST(msg_type) \
+{ \
+ .module_msg_type = AVS_MOD_##msg_type, \
+ .msg_direction = AVS_MSG_REQUEST, \
+ .msg_target = AVS_MOD_MSG, \
+}
+
+#define AVS_NOTIFICATION(msg_type) \
+{ \
+ .notify_msg_type = AVS_NOTIFY_##msg_type,\
+ .global_msg_type = AVS_GLB_NOTIFICATION,\
+ .msg_direction = AVS_MSG_REPLY, \
+ .msg_target = AVS_FW_GEN_MSG, \
+}
+
+#define avs_msg_is_reply(hdr) \
+({ \
+ union avs_reply_msg __msg = AVS_MSG(hdr); \
+ __msg.msg_direction == AVS_MSG_REPLY && \
+ __msg.global_msg_type != AVS_GLB_NOTIFICATION; \
+})
+
+/* Notification types */
+
+struct avs_notify_voice_data {
+ u16 kpd_score;
+ u16 reserved;
+} __packed;
+
+struct avs_notify_res_data {
+ u32 resource_type;
+ u32 resource_id;
+ u32 event_type;
+ u32 reserved;
+ u32 data[6];
+} __packed;
+
+struct avs_notify_mod_data {
+ u32 module_instance_id;
+ u32 event_id;
+ u32 data_size;
+ u32 data[];
+} __packed;
+
+#endif /* __SOUND_SOC_INTEL_AVS_MSGS_H */
/* Intel HD Audio General DSP Registers */
#define AVS_ADSP_GEN_BASE 0x0
#define AVS_ADSP_REG_ADSPCS (AVS_ADSP_GEN_BASE + 0x04)
+#define AVS_ADSP_REG_ADSPIC (AVS_ADSP_GEN_BASE + 0x08)
+#define AVS_ADSP_REG_ADSPIS (AVS_ADSP_GEN_BASE + 0x0C)
+
+#define AVS_ADSP_ADSPIC_IPC BIT(0)
+#define AVS_ADSP_ADSPIS_IPC BIT(0)
#define AVS_ADSPCS_CRST_MASK(cm) (cm)
#define AVS_ADSPCS_CSTALL_MASK(cm) ((cm) << 8)
#define AVS_ADSPCS_CPA_MASK(cm) ((cm) << 24)
#define AVS_MAIN_CORE_MASK BIT(0)
+#define AVS_ADSP_HIPCCTL_BUSY BIT(0)
+#define AVS_ADSP_HIPCCTL_DONE BIT(1)
+
+/* SKL Intel HD Audio Inter-Processor Communication Registers */
+#define SKL_ADSP_IPC_BASE 0x40
+#define SKL_ADSP_REG_HIPCT (SKL_ADSP_IPC_BASE + 0x00)
+#define SKL_ADSP_REG_HIPCTE (SKL_ADSP_IPC_BASE + 0x04)
+#define SKL_ADSP_REG_HIPCI (SKL_ADSP_IPC_BASE + 0x08)
+#define SKL_ADSP_REG_HIPCIE (SKL_ADSP_IPC_BASE + 0x0C)
+#define SKL_ADSP_REG_HIPCCTL (SKL_ADSP_IPC_BASE + 0x10)
+
+#define SKL_ADSP_HIPCI_BUSY BIT(31)
+#define SKL_ADSP_HIPCIE_DONE BIT(30)
+#define SKL_ADSP_HIPCT_BUSY BIT(31)
+
+/* Constants used when accessing SRAM, space shared with firmware */
+#define AVS_FW_REG_BASE(adev) ((adev)->spec->sram_base_offset)
+#define AVS_FW_REG_STATUS(adev) (AVS_FW_REG_BASE(adev) + 0x0)
+#define AVS_FW_REG_ERROR_CODE(adev) (AVS_FW_REG_BASE(adev) + 0x4)
+
+#define AVS_FW_REGS_SIZE PAGE_SIZE
+#define AVS_FW_REGS_WINDOW 0
+/* DSP -> HOST communication window */
+#define AVS_UPLINK_WINDOW AVS_FW_REGS_WINDOW
+/* HOST -> DSP communication window */
+#define AVS_DOWNLINK_WINDOW 1
+
+/* registry I/O helpers */
+#define avs_sram_offset(adev, window_idx) \
+ ((adev)->spec->sram_base_offset + \
+ (adev)->spec->sram_window_size * (window_idx))
+
+#define avs_sram_addr(adev, window_idx) \
+ ((adev)->dsp_ba + avs_sram_offset(adev, window_idx))
+
+#define avs_uplink_addr(adev) \
+ (avs_sram_addr(adev, AVS_UPLINK_WINDOW) + AVS_FW_REGS_SIZE)
+#define avs_downlink_addr(adev) \
+ avs_sram_addr(adev, AVS_DOWNLINK_WINDOW)
+
#endif /* __SOUND_SOC_INTEL_AVS_REGS_H */
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