235 static bool pcc_chan_plat_irq_can_be_shared(struct pcc_chan_info *pchan)  in pcc_chan_plat_irq_can_be_shared()  argument
237 	return (pchan->plat_irq_flags & ACPI_PCCT_INTERRUPT_MODE) ==  in pcc_chan_plat_irq_can_be_shared()
241 static bool pcc_mbox_cmd_complete_check(struct pcc_chan_info *pchan)  in pcc_mbox_cmd_complete_check()  argument
246 	if (!pchan->cmd_complete.gas)  in pcc_mbox_cmd_complete_check()
249 	ret = pcc_chan_reg_read(&pchan->cmd_complete, &val);  in pcc_mbox_cmd_complete_check()
257 	val &= pchan->cmd_complete.status_mask;  in pcc_mbox_cmd_complete_check()
264 	if (pchan->type == ACPI_PCCT_TYPE_EXT_PCC_SLAVE_SUBSPACE)  in pcc_mbox_cmd_complete_check()
270 static int pcc_mbox_error_check_and_clear(struct pcc_chan_info *pchan)  in pcc_mbox_error_check_and_clear()  argument
275 	ret = pcc_chan_reg_read(&pchan->error, &val);  in pcc_mbox_error_check_and_clear()
279 	val &= pchan->error.status_mask;  in pcc_mbox_error_check_and_clear()
281 		val &= ~pchan->error.status_mask;  in pcc_mbox_error_check_and_clear()
282 		pcc_chan_reg_write(&pchan->error, val);  in pcc_mbox_error_check_and_clear()
289 static void pcc_chan_acknowledge(struct pcc_chan_info *pchan)  in pcc_chan_acknowledge()  argument
293 	if (pchan->type != ACPI_PCCT_TYPE_EXT_PCC_SLAVE_SUBSPACE)  in pcc_chan_acknowledge()
296 	pcc_chan_reg_read_modify_write(&pchan->cmd_update);  in pcc_chan_acknowledge()
298 	pcc_hdr = pchan->chan.shmem;  in pcc_chan_acknowledge()
306 		pcc_chan_reg_read_modify_write(&pchan->db);  in pcc_chan_acknowledge()
318 	struct pcc_chan_info *pchan;  in pcc_mbox_irq()  local
321 	pchan = chan->con_priv;  in pcc_mbox_irq()
323 	if (pcc_chan_reg_read_modify_write(&pchan->plat_irq_ack))  in pcc_mbox_irq()
326 	if (pchan->type == ACPI_PCCT_TYPE_EXT_PCC_MASTER_SUBSPACE &&  in pcc_mbox_irq()
327 	    !pchan->chan_in_use)  in pcc_mbox_irq()
330 	if (!pcc_mbox_cmd_complete_check(pchan))  in pcc_mbox_irq()
333 	if (pcc_mbox_error_check_and_clear(pchan))  in pcc_mbox_irq()
342 	pchan->chan_in_use = false;  in pcc_mbox_irq()
345 	pcc_chan_acknowledge(pchan);  in pcc_mbox_irq()
366 	struct pcc_chan_info *pchan;  in pcc_mbox_request_channel()  local
373 	pchan = chan_info + subspace_id;  in pcc_mbox_request_channel()
374 	chan = pchan->chan.mchan;  in pcc_mbox_request_channel()
384 	pcc_mchan = &pchan->chan;  in pcc_mbox_request_channel()
401 void pcc_mbox_free_channel(struct pcc_mbox_chan *pchan)  in pcc_mbox_free_channel()  argument
403 	struct mbox_chan *chan = pchan->mchan;  in pcc_mbox_free_channel()
435 	struct pcc_chan_info *pchan = chan->con_priv;  in pcc_send_data()  local
437 	ret = pcc_chan_reg_read_modify_write(&pchan->cmd_update);  in pcc_send_data()
441 	ret = pcc_chan_reg_read_modify_write(&pchan->db);  in pcc_send_data()
442 	if (!ret && pchan->plat_irq > 0)  in pcc_send_data()
443 		pchan->chan_in_use = true;  in pcc_send_data()
457 	struct pcc_chan_info *pchan = chan->con_priv;  in pcc_startup()  local
461 	if (pchan->plat_irq > 0) {  in pcc_startup()
462 		irqflags = pcc_chan_plat_irq_can_be_shared(pchan) ?  in pcc_startup()
464 		rc = devm_request_irq(chan->mbox->dev, pchan->plat_irq, pcc_mbox_irq,  in pcc_startup()
468 				pchan->plat_irq);  in pcc_startup()
483 	struct pcc_chan_info *pchan = chan->con_priv;  in pcc_shutdown()  local
485 	if (pchan->plat_irq > 0)  in pcc_shutdown()
486 		devm_free_irq(chan->mbox->dev, pchan->plat_irq, chan);  in pcc_shutdown()
553 static int pcc_parse_subspace_irq(struct pcc_chan_info *pchan,  in pcc_parse_subspace_irq()  argument
564 	pchan->plat_irq = pcc_map_interrupt(pcct_ss->platform_interrupt,  in pcc_parse_subspace_irq()
566 	if (pchan->plat_irq <= 0) {  in pcc_parse_subspace_irq()
571 	pchan->plat_irq_flags = pcct_ss->flags;  in pcc_parse_subspace_irq()
576 		ret = pcc_chan_reg_init(&pchan->plat_irq_ack,  in pcc_parse_subspace_irq()
586 		ret = pcc_chan_reg_init(&pchan->plat_irq_ack,  in pcc_parse_subspace_irq()
593 	if (pcc_chan_plat_irq_can_be_shared(pchan) &&  in pcc_parse_subspace_irq()
594 	    !pchan->plat_irq_ack.gas) {  in pcc_parse_subspace_irq()
610 static int pcc_parse_subspace_db_reg(struct pcc_chan_info *pchan,  in pcc_parse_subspace_db_reg()  argument
620 		ret = pcc_chan_reg_init(&pchan->db,  in pcc_parse_subspace_db_reg()
630 		ret = pcc_chan_reg_init(&pchan->db,  in pcc_parse_subspace_db_reg()
637 		ret = pcc_chan_reg_init(&pchan->cmd_complete,  in pcc_parse_subspace_db_reg()
644 		ret = pcc_chan_reg_init(&pchan->cmd_update,  in pcc_parse_subspace_db_reg()
652 		ret = pcc_chan_reg_init(&pchan->error,  in pcc_parse_subspace_db_reg()
667 static void pcc_parse_subspace_shmem(struct pcc_chan_info *pchan,  in pcc_parse_subspace_shmem()  argument
674 		pchan->chan.shmem_base_addr = pcct_ss->base_address;  in pcc_parse_subspace_shmem()
675 		pchan->chan.shmem_size = pcct_ss->length;  in pcc_parse_subspace_shmem()
676 		pchan->chan.latency = pcct_ss->latency;  in pcc_parse_subspace_shmem()
677 		pchan->chan.max_access_rate = pcct_ss->max_access_rate;  in pcc_parse_subspace_shmem()
678 		pchan->chan.min_turnaround_time = pcct_ss->min_turnaround_time;  in pcc_parse_subspace_shmem()
683 		pchan->chan.shmem_base_addr = pcct_ext->base_address;  in pcc_parse_subspace_shmem()
684 		pchan->chan.shmem_size = pcct_ext->length;  in pcc_parse_subspace_shmem()
685 		pchan->chan.latency = pcct_ext->latency;  in pcc_parse_subspace_shmem()
686 		pchan->chan.max_access_rate = pcct_ext->max_access_rate;  in pcc_parse_subspace_shmem()
687 		pchan->chan.min_turnaround_time = pcct_ext->min_turnaround_time;  in pcc_parse_subspace_shmem()
790 		struct pcc_chan_info *pchan = chan_info + i;  in pcc_mbox_probe()  local
792 		pcc_mbox_channels[i].con_priv = pchan;  in pcc_mbox_probe()
793 		pchan->chan.mchan = &pcc_mbox_channels[i];  in pcc_mbox_probe()
803 			rc = pcc_parse_subspace_irq(pchan, pcct_entry);  in pcc_mbox_probe()
807 		rc = pcc_parse_subspace_db_reg(pchan, pcct_entry);  in pcc_mbox_probe()
811 		pcc_parse_subspace_shmem(pchan, pcct_entry);  in pcc_mbox_probe()
813 		pchan->type = pcct_entry->type;  in pcc_mbox_probe()