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-rw-r--r--sound/soc/intel/avs/apl.c254
1 files changed, 254 insertions, 0 deletions
diff --git a/sound/soc/intel/avs/apl.c b/sound/soc/intel/avs/apl.c
new file mode 100644
index 000000000..f366478a8
--- /dev/null
+++ b/sound/soc/intel/avs/apl.c
@@ -0,0 +1,254 @@
+// 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/devcoredump.h>
+#include <linux/slab.h>
+#include "avs.h"
+#include "messages.h"
+#include "path.h"
+#include "topology.h"
+
+static int apl_enable_logs(struct avs_dev *adev, enum avs_log_enable enable, u32 aging_period,
+ u32 fifo_full_period, unsigned long resource_mask, u32 *priorities)
+{
+ struct apl_log_state_info *info;
+ u32 size, num_cores = adev->hw_cfg.dsp_cores;
+ int ret, i;
+
+ if (fls_long(resource_mask) > num_cores)
+ return -EINVAL;
+ size = struct_size(info, logs_core, num_cores);
+ info = kzalloc(size, GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->aging_timer_period = aging_period;
+ info->fifo_full_timer_period = fifo_full_period;
+ info->core_mask = resource_mask;
+ if (enable)
+ for_each_set_bit(i, &resource_mask, num_cores) {
+ info->logs_core[i].enable = enable;
+ info->logs_core[i].min_priority = *priorities++;
+ }
+ else
+ for_each_set_bit(i, &resource_mask, num_cores)
+ info->logs_core[i].enable = enable;
+
+ ret = avs_ipc_set_enable_logs(adev, (u8 *)info, size);
+ kfree(info);
+ if (ret)
+ return AVS_IPC_RET(ret);
+
+ return 0;
+}
+
+static int apl_log_buffer_status(struct avs_dev *adev, union avs_notify_msg *msg)
+{
+ struct apl_log_buffer_layout layout;
+ unsigned long flags;
+ void __iomem *addr, *buf;
+
+ addr = avs_log_buffer_addr(adev, msg->log.core);
+ if (!addr)
+ return -ENXIO;
+
+ memcpy_fromio(&layout, addr, sizeof(layout));
+
+ spin_lock_irqsave(&adev->dbg.trace_lock, flags);
+ if (!kfifo_initialized(&adev->dbg.trace_fifo))
+ /* consume the logs regardless of consumer presence */
+ goto update_read_ptr;
+
+ buf = apl_log_payload_addr(addr);
+
+ if (layout.read_ptr > layout.write_ptr) {
+ __kfifo_fromio_locked(&adev->dbg.trace_fifo, buf + layout.read_ptr,
+ apl_log_payload_size(adev) - layout.read_ptr,
+ &adev->dbg.fifo_lock);
+ layout.read_ptr = 0;
+ }
+ __kfifo_fromio_locked(&adev->dbg.trace_fifo, buf + layout.read_ptr,
+ layout.write_ptr - layout.read_ptr, &adev->dbg.fifo_lock);
+
+ wake_up(&adev->dbg.trace_waitq);
+
+update_read_ptr:
+ spin_unlock_irqrestore(&adev->dbg.trace_lock, flags);
+ writel(layout.write_ptr, addr);
+ return 0;
+}
+
+static int apl_wait_log_entry(struct avs_dev *adev, u32 core, struct apl_log_buffer_layout *layout)
+{
+ unsigned long timeout;
+ void __iomem *addr;
+
+ addr = avs_log_buffer_addr(adev, core);
+ if (!addr)
+ return -ENXIO;
+
+ timeout = jiffies + msecs_to_jiffies(10);
+
+ do {
+ memcpy_fromio(layout, addr, sizeof(*layout));
+ if (layout->read_ptr != layout->write_ptr)
+ return 0;
+ usleep_range(500, 1000);
+ } while (!time_after(jiffies, timeout));
+
+ return -ETIMEDOUT;
+}
+
+/* reads log header and tests its type */
+#define apl_is_entry_stackdump(addr) ((readl(addr) >> 30) & 0x1)
+
+static int apl_coredump(struct avs_dev *adev, union avs_notify_msg *msg)
+{
+ struct apl_log_buffer_layout layout;
+ void __iomem *addr, *buf;
+ size_t dump_size;
+ u16 offset = 0;
+ u8 *dump, *pos;
+
+ dump_size = AVS_FW_REGS_SIZE + msg->ext.coredump.stack_dump_size;
+ dump = vzalloc(dump_size);
+ if (!dump)
+ return -ENOMEM;
+
+ memcpy_fromio(dump, avs_sram_addr(adev, AVS_FW_REGS_WINDOW), AVS_FW_REGS_SIZE);
+
+ if (!msg->ext.coredump.stack_dump_size)
+ goto exit;
+
+ /* Dump the registers even if an external error prevents gathering the stack. */
+ addr = avs_log_buffer_addr(adev, msg->ext.coredump.core_id);
+ if (!addr)
+ goto exit;
+
+ buf = apl_log_payload_addr(addr);
+ memcpy_fromio(&layout, addr, sizeof(layout));
+ if (!apl_is_entry_stackdump(buf + layout.read_ptr)) {
+ /*
+ * DSP awaits the remaining logs to be
+ * gathered before dumping stack
+ */
+ msg->log.core = msg->ext.coredump.core_id;
+ avs_dsp_op(adev, log_buffer_status, msg);
+ }
+
+ pos = dump + AVS_FW_REGS_SIZE;
+ /* gather the stack */
+ do {
+ u32 count;
+
+ if (apl_wait_log_entry(adev, msg->ext.coredump.core_id, &layout))
+ break;
+
+ if (layout.read_ptr > layout.write_ptr) {
+ count = apl_log_payload_size(adev) - layout.read_ptr;
+ memcpy_fromio(pos + offset, buf + layout.read_ptr, count);
+ layout.read_ptr = 0;
+ offset += count;
+ }
+ count = layout.write_ptr - layout.read_ptr;
+ memcpy_fromio(pos + offset, buf + layout.read_ptr, count);
+ offset += count;
+
+ /* update read pointer */
+ writel(layout.write_ptr, addr);
+ } while (offset < msg->ext.coredump.stack_dump_size);
+
+exit:
+ dev_coredumpv(adev->dev, dump, dump_size, GFP_KERNEL);
+
+ return 0;
+}
+
+static bool apl_lp_streaming(struct avs_dev *adev)
+{
+ struct avs_path *path;
+
+ spin_lock(&adev->path_list_lock);
+ /* Any gateway without buffer allocated in LP area disqualifies D0IX. */
+ list_for_each_entry(path, &adev->path_list, node) {
+ struct avs_path_pipeline *ppl;
+
+ list_for_each_entry(ppl, &path->ppl_list, node) {
+ struct avs_path_module *mod;
+
+ list_for_each_entry(mod, &ppl->mod_list, node) {
+ struct avs_tplg_modcfg_ext *cfg;
+
+ cfg = mod->template->cfg_ext;
+
+ /* only copiers have gateway attributes */
+ if (!guid_equal(&cfg->type, &AVS_COPIER_MOD_UUID))
+ continue;
+ /* non-gateway copiers do not prevent PG */
+ if (cfg->copier.dma_type == INVALID_OBJECT_ID)
+ continue;
+
+ if (!mod->gtw_attrs.lp_buffer_alloc) {
+ spin_unlock(&adev->path_list_lock);
+ return false;
+ }
+ }
+ }
+ }
+ spin_unlock(&adev->path_list_lock);
+
+ return true;
+}
+
+static bool apl_d0ix_toggle(struct avs_dev *adev, struct avs_ipc_msg *tx, bool wake)
+{
+ /* wake in all cases */
+ if (wake)
+ return true;
+
+ /*
+ * If no pipelines are running, allow for d0ix schedule.
+ * If all gateways have lp=1, allow for d0ix schedule.
+ * If any gateway with lp=0 is allocated, abort scheduling d0ix.
+ *
+ * Note: for cAVS 1.5+ and 1.8, D0IX is LP-firmware transition,
+ * not the power-gating mechanism known from cAVS 2.0.
+ */
+ return apl_lp_streaming(adev);
+}
+
+static int apl_set_d0ix(struct avs_dev *adev, bool enable)
+{
+ bool streaming = false;
+ int ret;
+
+ if (enable)
+ /* Either idle or all gateways with lp=1. */
+ streaming = !list_empty(&adev->path_list);
+
+ ret = avs_ipc_set_d0ix(adev, enable, streaming);
+ return AVS_IPC_RET(ret);
+}
+
+const struct avs_dsp_ops apl_dsp_ops = {
+ .power = avs_dsp_core_power,
+ .reset = avs_dsp_core_reset,
+ .stall = avs_dsp_core_stall,
+ .irq_handler = avs_dsp_irq_handler,
+ .irq_thread = avs_dsp_irq_thread,
+ .int_control = avs_dsp_interrupt_control,
+ .load_basefw = avs_hda_load_basefw,
+ .load_lib = avs_hda_load_library,
+ .transfer_mods = avs_hda_transfer_modules,
+ .enable_logs = apl_enable_logs,
+ .log_buffer_offset = skl_log_buffer_offset,
+ .log_buffer_status = apl_log_buffer_status,
+ .coredump = apl_coredump,
+ .d0ix_toggle = apl_d0ix_toggle,
+ .set_d0ix = apl_set_d0ix,
+};