adf_gen6_pm_dbgfs.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2/* Copyright(c) 2025 Intel Corporation */
  3#include <linux/dma-mapping.h>
  4#include <linux/export.h>
  5#include <linux/string_helpers.h>
  6
  7#include "adf_admin.h"
  8#include "adf_common_drv.h"
  9#include "adf_gen6_pm.h"
 10#include "adf_pm_dbgfs_utils.h"
 11#include "icp_qat_fw_init_admin.h"
 12
 13#define PM_INFO_REGSET_ENTRY(_reg_, _field_) \
 14	PM_INFO_REGSET_ENTRY_MASK(_reg_, _field_, ADF_GEN6_PM_##_field_##_MASK)
 15
 16static struct pm_status_row pm_fuse_rows[] = {
 17	PM_INFO_REGSET_ENTRY(fusectl0, ENABLE_PM),
 18	PM_INFO_REGSET_ENTRY(fusectl0, ENABLE_PM_IDLE),
 19	PM_INFO_REGSET_ENTRY(fusectl0, ENABLE_DEEP_PM_IDLE),
 20};
 21
 22static struct pm_status_row pm_info_rows[] = {
 23	PM_INFO_REGSET_ENTRY(pm.status, CPM_PM_STATE),
 24	PM_INFO_REGSET_ENTRY(pm.fw_init, IDLE_ENABLE),
 25	PM_INFO_REGSET_ENTRY(pm.fw_init, IDLE_FILTER),
 26};
 27
 28static struct pm_status_row pm_ssm_rows[] = {
 29	PM_INFO_REGSET_ENTRY(ssm.pm_enable, SSM_PM_ENABLE),
 30	PM_INFO_REGSET_ENTRY(ssm.pm_domain_status, DOMAIN_POWERED_UP),
 31};
 32
 33static struct pm_status_row pm_csrs_rows[] = {
 34	PM_INFO_REGSET_ENTRY32(pm.fw_init, CPM_PM_FW_INIT),
 35	PM_INFO_REGSET_ENTRY32(pm.status, CPM_PM_STATUS),
 36};
 37
 38static_assert(sizeof(struct icp_qat_fw_init_admin_pm_info) < PAGE_SIZE);
 39
 40static ssize_t adf_gen6_print_pm_status(struct adf_accel_dev *accel_dev,
 41					char __user *buf, size_t count,
 42					loff_t *pos)
 43{
 44	void __iomem *pmisc = adf_get_pmisc_base(accel_dev);
 45	struct icp_qat_fw_init_admin_pm_info *pm_info;
 46	dma_addr_t p_state_addr;
 47	u32 *pm_info_regs;
 48	size_t len = 0;
 49	char *pm_kv;
 50	u32 val;
 51	int ret;
 52
 53	pm_info = kzalloc(PAGE_SIZE, GFP_KERNEL);
 54	if (!pm_info)
 55		return -ENOMEM;
 56
 57	pm_kv = kzalloc(PAGE_SIZE, GFP_KERNEL);
 58	if (!pm_kv) {
 59		kfree(pm_info);
 60		return -ENOMEM;
 61	}
 62
 63	p_state_addr = dma_map_single(&GET_DEV(accel_dev), pm_info, PAGE_SIZE,
 64				      DMA_FROM_DEVICE);
 65	ret = dma_mapping_error(&GET_DEV(accel_dev), p_state_addr);
 66	if (ret)
 67		goto out_free;
 68
 69	/* Query power management information from QAT FW */
 70	ret = adf_get_pm_info(accel_dev, p_state_addr, PAGE_SIZE);
 71	dma_unmap_single(&GET_DEV(accel_dev), p_state_addr, PAGE_SIZE,
 72			 DMA_FROM_DEVICE);
 73	if (ret)
 74		goto out_free;
 75
 76	pm_info_regs = (u32 *)pm_info;
 77
 78	/* Fuse control register */
 79	len += scnprintf(&pm_kv[len], PAGE_SIZE - len,
 80			 "----------- PM Fuse info ---------\n");
 81	len += adf_pm_scnprint_table_lower_keys(&pm_kv[len], pm_fuse_rows,
 82						pm_info_regs, PAGE_SIZE - len,
 83						ARRAY_SIZE(pm_fuse_rows));
 84
 85	/* Power management */
 86	len += scnprintf(&pm_kv[len], PAGE_SIZE - len,
 87			 "----------- PM Info --------------\n");
 88
 89	len += adf_pm_scnprint_table_lower_keys(&pm_kv[len], pm_info_rows,
 90						pm_info_regs, PAGE_SIZE - len,
 91						ARRAY_SIZE(pm_info_rows));
 92	len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "pm_mode: ACTIVE\n");
 93
 94	/* Shared Slice Module */
 95	len += scnprintf(&pm_kv[len], PAGE_SIZE - len,
 96			 "----------- SSM_PM Info ----------\n");
 97	len += adf_pm_scnprint_table_lower_keys(&pm_kv[len], pm_ssm_rows,
 98						pm_info_regs, PAGE_SIZE - len,
 99						ARRAY_SIZE(pm_ssm_rows));
100
101	/* Control status register content */
102	len += scnprintf(&pm_kv[len], PAGE_SIZE - len,
103			 "----------- HW PM CSRs -----------\n");
104	len += adf_pm_scnprint_table_upper_keys(&pm_kv[len], pm_csrs_rows,
105						pm_info_regs, PAGE_SIZE - len,
106						ARRAY_SIZE(pm_csrs_rows));
107
108	val = ADF_CSR_RD(pmisc, ADF_GEN6_PM_INTERRUPT);
109	len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "CPM_PM_INTERRUPT: %#x\n", val);
110	ret = simple_read_from_buffer(buf, count, pos, pm_kv, len);
111
112out_free:
113	kfree(pm_info);
114	kfree(pm_kv);
115
116	return ret;
117}
118
119void adf_gen6_init_dev_pm_data(struct adf_accel_dev *accel_dev)
120{
121	accel_dev->power_management.print_pm_status = adf_gen6_print_pm_status;
122	accel_dev->power_management.present = true;
123}
124EXPORT_SYMBOL_GPL(adf_gen6_init_dev_pm_data);