Implement the IPC between Intel audio firmware and kernel driver. The IPC allows transmission of requests, handling of responses as well as unsolicited (i.e. firmware-generated) notifications.
A subscription mechanism is added to enable different parts of the driver to register for specific notifications.
The boot process involving ROM-code requires specific handling with 'unstall' operations which are not required post-boot with normal IPC so separate set of send-message handlers is added for each of the usecases.
Signed-off-by: Amadeusz Sławiński amadeuszx.slawinski@linux.intel.com Signed-off-by: Cezary Rojewski cezary.rojewski@intel.com --- sound/soc/intel/avs/Makefile | 2 +- sound/soc/intel/avs/avs.h | 93 ++++++++ sound/soc/intel/avs/ipc.c | 404 ++++++++++++++++++++++++++++++++ sound/soc/intel/avs/messages.h | 170 ++++++++++++++ sound/soc/intel/avs/registers.h | 45 ++++ 5 files changed, 713 insertions(+), 1 deletion(-) create mode 100644 sound/soc/intel/avs/ipc.c create mode 100644 sound/soc/intel/avs/messages.h
diff --git a/sound/soc/intel/avs/Makefile b/sound/soc/intel/avs/Makefile index 5f7976a95fe2..e243806dd38a 100644 --- a/sound/soc/intel/avs/Makefile +++ b/sound/soc/intel/avs/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only
-snd-soc-avs-objs := dsp.o +snd-soc-avs-objs := dsp.o ipc.o
obj-$(CONFIG_SND_SOC_INTEL_AVS) += snd-soc-avs.o diff --git a/sound/soc/intel/avs/avs.h b/sound/soc/intel/avs/avs.h index 7ece210b0777..8620d2f7fee0 100644 --- a/sound/soc/intel/avs/avs.h +++ b/sound/soc/intel/avs/avs.h @@ -11,6 +11,7 @@
#include <linux/device.h> #include <sound/hda_codec.h> +#include "messages.h"
struct avs_dev;
@@ -18,6 +19,9 @@ 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, ...) \ @@ -34,6 +38,18 @@ struct avs_spec {
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; + const u32 hipc_req_offset; + const u32 hipc_req_ext_offset; + const u32 hipc_req_busy_mask; + const u32 hipc_ack_offset; + const u32 hipc_ack_done_mask; + const u32 hipc_rsp_offset; + const u32 hipc_rsp_busy_mask; + const u32 hipc_ctl_offset; };
struct avs_dev { @@ -42,6 +58,9 @@ struct avs_dev {
void __iomem *adsp_ba; const struct avs_spec *spec; + struct avs_ipc *ipc; + + struct completion fw_ready; };
/* from hda_bus to avs_dev */ @@ -61,4 +80,78 @@ int avs_dsp_core_stall(struct avs_dev *adev, u32 core_mask, bool stall); 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 { + 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_pm_msg_timeout(struct avs_dev *adev, + struct avs_ipc_msg *request, + struct avs_ipc_msg *reply, int timeout, + bool wake_d0i0); +int avs_dsp_send_pm_msg(struct avs_dev *adev, + struct avs_ipc_msg *request, + struct avs_ipc_msg *reply, bool wake_d0i0); +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 */ diff --git a/sound/soc/intel/avs/ipc.c b/sound/soc/intel/avs/ipc.c new file mode 100644 index 000000000000..69178b5d39b1 --- /dev/null +++ b/sound/soc/intel/avs/ipc.c @@ -0,0 +1,404 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +// Copyright(c) 2021 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; + 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; + + 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: + memcpy_fromio(&mod_data, avs_uplink_addr(adev), sizeof(mod_data)); + data_size = sizeof(mod_data) + mod_data.data_size; + break; + + default: + dev_warn(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; + + 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; + const struct avs_spec *const spec = adev->spec; + 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, spec->hipc_ack_offset); + hipc_rsp = snd_hdac_adsp_readl(adev, spec->hipc_rsp_offset); + + /* DSP acked host's request */ + if (hipc_ack & spec->hipc_ack_done_mask) { + /* mask done interrupt */ + snd_hdac_adsp_updatel(adev, spec->hipc_ctl_offset, + AVS_ADSP_HIPCCTL_DONE, 0); + + complete(&ipc->done_completion); + + /* tell DSP it has our attention */ + snd_hdac_adsp_updatel(adev, spec->hipc_ack_offset, + spec->hipc_ack_done_mask, + spec->hipc_ack_done_mask); + /* unmask done interrupt */ + snd_hdac_adsp_updatel(adev, spec->hipc_ctl_offset, + AVS_ADSP_HIPCCTL_DONE, + AVS_ADSP_HIPCCTL_DONE); + ret = IRQ_HANDLED; + } + + /* DSP sent new response to process */ + if (hipc_rsp & spec->hipc_rsp_busy_mask) { + /* mask busy interrupt */ + snd_hdac_adsp_updatel(adev, spec->hipc_ctl_offset, + 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); + const struct avs_spec *const spec = adev->spec; + u32 hipc_rsp; + + hipc_rsp = snd_hdac_adsp_readl(adev, spec->hipc_rsp_offset); + return hipc_rsp & spec->hipc_rsp_busy_mask; +} + +static int avs_ipc_wait_busy_completion(struct avs_ipc *ipc, int timeout) +{ + int ret; + +again: + ret = wait_for_completion_timeout(&ipc->busy_completion, + msecs_to_jiffies(timeout)); + /* + * DSP could be unresponsive at this point e.g. manifested by + * EXCEPTION_CAUGHT notification. If so, no point in continuing. + */ + 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) { + /* Reply delayed due to notification. */ + reinit_completion(&ipc->busy_completion); + spin_unlock(&ipc->rx_lock); + goto again; + } + + 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) +{ + const struct avs_spec *const spec = adev->spec; + + tx->header |= spec->hipc_req_busy_mask; + + if (tx->size) + memcpy_toio(avs_downlink_addr(adev), tx->data, tx->size); + snd_hdac_adsp_writel(adev, spec->hipc_req_ext_offset, tx->header >> 32); + snd_hdac_adsp_writel(adev, spec->hipc_req_offset, 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; +} + +static int avs_dsp_send_msg_sequence(struct avs_dev *adev, + struct avs_ipc_msg *request, + struct avs_ipc_msg *reply, int timeout, + bool wake_d0i0, bool schedule_d0ix) +{ + return avs_dsp_do_send_msg(adev, request, reply, timeout); +} + +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_send_msg_sequence(adev, request, reply, timeout, + false, false); +} + +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); +} + +int avs_dsp_send_pm_msg_timeout(struct avs_dev *adev, + struct avs_ipc_msg *request, + struct avs_ipc_msg *reply, int timeout, + bool wake_d0i0) +{ + return avs_dsp_send_msg_sequence(adev, request, reply, timeout, + wake_d0i0, false); +} + +int avs_dsp_send_pm_msg(struct avs_dev *adev, + struct avs_ipc_msg *request, + struct avs_ipc_msg *reply, bool wake_d0i0) +{ + return avs_dsp_send_pm_msg_timeout(adev, request, reply, + adev->ipc->default_timeout_ms, + wake_d0i0); +} + +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) +{ + const struct avs_spec *const spec = adev->spec; + u32 value; + + value = enable ? AVS_ADSP_ADSPIC_IPC : 0; + snd_hdac_adsp_updatel(adev, AVS_ADSP_REG_ADSPIC, + AVS_ADSP_ADSPIC_IPC, value); + + value = enable ? AVS_ADSP_HIPCCTL_DONE : 0; + snd_hdac_adsp_updatel(adev, spec->hipc_ctl_offset, + AVS_ADSP_HIPCCTL_DONE, value); + + value = enable ? AVS_ADSP_HIPCCTL_BUSY : 0; + snd_hdac_adsp_updatel(adev, spec->hipc_ctl_offset, + AVS_ADSP_HIPCCTL_BUSY, 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; +} diff --git a/sound/soc/intel/avs/messages.h b/sound/soc/intel/avs/messages.h new file mode 100644 index 000000000000..003e634f5547 --- /dev/null +++ b/sound/soc/intel/avs/messages.h @@ -0,0 +1,170 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright(c) 2021 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 */ diff --git a/sound/soc/intel/avs/registers.h b/sound/soc/intel/avs/registers.h index e0b6c8ffe633..c1db10269c62 100644 --- a/sound/soc/intel/avs/registers.h +++ b/sound/soc/intel/avs/registers.h @@ -12,6 +12,11 @@ /* 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) @@ -19,4 +24,44 @@ #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)->adsp_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 */