1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // Copyright(c) 2021-2022 Intel Corporation 4 // 5 // Authors: Cezary Rojewski <cezary.rojewski@intel.com> 6 // Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com> 7 // 8 9 #include <linux/devcoredump.h> 10 #include <linux/slab.h> 11 #include <sound/hdaudio_ext.h> 12 #include "avs.h" 13 #include "messages.h" 14 #include "path.h" 15 #include "registers.h" 16 #include "topology.h" 17 18 static irqreturn_t avs_apl_dsp_interrupt(struct avs_dev *adev) 19 { 20 u32 adspis = snd_hdac_adsp_readl(adev, AVS_ADSP_REG_ADSPIS); 21 irqreturn_t ret = IRQ_NONE; 22 23 if (adspis == UINT_MAX) 24 return ret; 25 26 if (adspis & AVS_ADSP_ADSPIS_IPC) { 27 avs_skl_ipc_interrupt(adev); 28 ret = IRQ_HANDLED; 29 } 30 31 return ret; 32 } 33 34 #ifdef CONFIG_DEBUG_FS 35 int avs_apl_enable_logs(struct avs_dev *adev, enum avs_log_enable enable, u32 aging_period, 36 u32 fifo_full_period, unsigned long resource_mask, u32 *priorities) 37 { 38 struct avs_apl_log_state_info *info; 39 u32 size, num_cores = adev->hw_cfg.dsp_cores; 40 int ret, i; 41 42 if (fls_long(resource_mask) > num_cores) 43 return -EINVAL; 44 size = struct_size(info, logs_core, num_cores); 45 info = kzalloc(size, GFP_KERNEL); 46 if (!info) 47 return -ENOMEM; 48 49 info->aging_timer_period = aging_period; 50 info->fifo_full_timer_period = fifo_full_period; 51 info->core_mask = resource_mask; 52 if (enable) 53 for_each_set_bit(i, &resource_mask, num_cores) { 54 info->logs_core[i].enable = enable; 55 info->logs_core[i].min_priority = *priorities++; 56 } 57 else 58 for_each_set_bit(i, &resource_mask, num_cores) 59 info->logs_core[i].enable = enable; 60 61 ret = avs_ipc_set_enable_logs(adev, (u8 *)info, size); 62 kfree(info); 63 if (ret) 64 return AVS_IPC_RET(ret); 65 66 return 0; 67 } 68 #endif 69 70 int avs_apl_log_buffer_status(struct avs_dev *adev, union avs_notify_msg *msg) 71 { 72 struct avs_apl_log_buffer_layout layout; 73 void __iomem *addr, *buf; 74 75 addr = avs_log_buffer_addr(adev, msg->log.core); 76 if (!addr) 77 return -ENXIO; 78 79 memcpy_fromio(&layout, addr, sizeof(layout)); 80 81 if (!avs_logging_fw(adev)) 82 /* consume the logs regardless of consumer presence */ 83 goto update_read_ptr; 84 85 buf = avs_apl_log_payload_addr(addr); 86 87 if (layout.read_ptr > layout.write_ptr) { 88 avs_dump_fw_log(adev, buf + layout.read_ptr, 89 avs_apl_log_payload_size(adev) - layout.read_ptr); 90 layout.read_ptr = 0; 91 } 92 avs_dump_fw_log_wakeup(adev, buf + layout.read_ptr, layout.write_ptr - layout.read_ptr); 93 94 update_read_ptr: 95 writel(layout.write_ptr, addr); 96 return 0; 97 } 98 99 static int avs_apl_wait_log_entry(struct avs_dev *adev, u32 core, 100 struct avs_apl_log_buffer_layout *layout) 101 { 102 unsigned long timeout; 103 void __iomem *addr; 104 105 addr = avs_log_buffer_addr(adev, core); 106 if (!addr) 107 return -ENXIO; 108 109 timeout = jiffies + msecs_to_jiffies(10); 110 111 do { 112 memcpy_fromio(layout, addr, sizeof(*layout)); 113 if (layout->read_ptr != layout->write_ptr) 114 return 0; 115 usleep_range(500, 1000); 116 } while (!time_after(jiffies, timeout)); 117 118 return -ETIMEDOUT; 119 } 120 121 /* reads log header and tests its type */ 122 #define avs_apl_is_entry_stackdump(addr) ((readl(addr) >> 30) & 0x1) 123 124 int avs_apl_coredump(struct avs_dev *adev, union avs_notify_msg *msg) 125 { 126 struct avs_apl_log_buffer_layout layout; 127 void __iomem *addr, *buf; 128 size_t dump_size; 129 u32 offset = 0; 130 u8 *dump, *pos; 131 132 dump_size = AVS_FW_REGS_SIZE + msg->ext.coredump.stack_dump_size; 133 dump = vzalloc(dump_size); 134 if (!dump) 135 return -ENOMEM; 136 137 memcpy_fromio(dump, avs_sram_addr(adev, AVS_FW_REGS_WINDOW), AVS_FW_REGS_SIZE); 138 139 if (!msg->ext.coredump.stack_dump_size) 140 goto exit; 141 142 /* Dump the registers even if an external error prevents gathering the stack. */ 143 addr = avs_log_buffer_addr(adev, msg->ext.coredump.core_id); 144 if (!addr) 145 goto exit; 146 147 buf = avs_apl_log_payload_addr(addr); 148 memcpy_fromio(&layout, addr, sizeof(layout)); 149 if (!avs_apl_is_entry_stackdump(buf + layout.read_ptr)) { 150 union avs_notify_msg lbs_msg = AVS_NOTIFICATION(LOG_BUFFER_STATUS); 151 152 /* 153 * DSP awaits the remaining logs to be 154 * gathered before dumping stack 155 */ 156 lbs_msg.log.core = msg->ext.coredump.core_id; 157 avs_log_buffer_status_locked(adev, &lbs_msg); 158 } 159 160 pos = dump + AVS_FW_REGS_SIZE; 161 /* gather the stack */ 162 do { 163 u32 count; 164 165 if (avs_apl_wait_log_entry(adev, msg->ext.coredump.core_id, &layout)) 166 break; 167 168 if (layout.read_ptr > layout.write_ptr) { 169 count = avs_apl_log_payload_size(adev) - layout.read_ptr; 170 memcpy_fromio(pos + offset, buf + layout.read_ptr, count); 171 layout.read_ptr = 0; 172 offset += count; 173 } 174 count = layout.write_ptr - layout.read_ptr; 175 memcpy_fromio(pos + offset, buf + layout.read_ptr, count); 176 offset += count; 177 178 /* update read pointer */ 179 writel(layout.write_ptr, addr); 180 } while (offset < msg->ext.coredump.stack_dump_size); 181 182 exit: 183 dev_coredumpv(adev->dev, dump, dump_size, GFP_KERNEL); 184 185 return 0; 186 } 187 188 static bool avs_apl_lp_streaming(struct avs_dev *adev) 189 { 190 struct avs_path *path; 191 192 spin_lock(&adev->path_list_lock); 193 /* Any gateway without buffer allocated in LP area disqualifies D0IX. */ 194 list_for_each_entry(path, &adev->path_list, node) { 195 struct avs_path_pipeline *ppl; 196 197 list_for_each_entry(ppl, &path->ppl_list, node) { 198 struct avs_path_module *mod; 199 200 list_for_each_entry(mod, &ppl->mod_list, node) { 201 struct avs_tplg_modcfg_ext *cfg; 202 203 cfg = mod->template->cfg_ext; 204 205 /* only copiers have gateway attributes */ 206 if (!guid_equal(&cfg->type, &AVS_COPIER_MOD_UUID)) 207 continue; 208 /* non-gateway copiers do not prevent PG */ 209 if (cfg->copier.dma_type == INVALID_OBJECT_ID) 210 continue; 211 212 if (!mod->gtw_attrs.lp_buffer_alloc) { 213 spin_unlock(&adev->path_list_lock); 214 return false; 215 } 216 } 217 } 218 } 219 spin_unlock(&adev->path_list_lock); 220 221 return true; 222 } 223 224 bool avs_apl_d0ix_toggle(struct avs_dev *adev, struct avs_ipc_msg *tx, bool wake) 225 { 226 /* wake in all cases */ 227 if (wake) 228 return true; 229 230 /* 231 * If no pipelines are running, allow for d0ix schedule. 232 * If all gateways have lp=1, allow for d0ix schedule. 233 * If any gateway with lp=0 is allocated, abort scheduling d0ix. 234 * 235 * Note: for cAVS 1.5+ and 1.8, D0IX is LP-firmware transition, 236 * not the power-gating mechanism known from cAVS 2.0. 237 */ 238 return avs_apl_lp_streaming(adev); 239 } 240 241 int avs_apl_set_d0ix(struct avs_dev *adev, bool enable) 242 { 243 bool streaming = false; 244 int ret; 245 246 if (enable) 247 /* Either idle or all gateways with lp=1. */ 248 streaming = !list_empty(&adev->path_list); 249 250 ret = avs_ipc_set_d0ix(adev, enable, streaming); 251 return AVS_IPC_RET(ret); 252 } 253 254 const struct avs_dsp_ops avs_apl_dsp_ops = { 255 .power = avs_dsp_core_power, 256 .reset = avs_dsp_core_reset, 257 .stall = avs_dsp_core_stall, 258 .dsp_interrupt = avs_apl_dsp_interrupt, 259 .int_control = avs_dsp_interrupt_control, 260 .load_basefw = avs_hda_load_basefw, 261 .load_lib = avs_hda_load_library, 262 .transfer_mods = avs_hda_transfer_modules, 263 .log_buffer_offset = avs_skl_log_buffer_offset, 264 .log_buffer_status = avs_apl_log_buffer_status, 265 .coredump = avs_apl_coredump, 266 .d0ix_toggle = avs_apl_d0ix_toggle, 267 .set_d0ix = avs_apl_set_d0ix, 268 AVS_SET_ENABLE_LOGS_OP(apl) 269 }; 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