From patchwork Mon Sep 30 09:20:08 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xu Zaibo X-Patchwork-Id: 11166245 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A1D0C1599 for ; Mon, 30 Sep 2019 09:24:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7FF092190F for ; Mon, 30 Sep 2019 09:24:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730422AbfI3JX6 (ORCPT ); Mon, 30 Sep 2019 05:23:58 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:37956 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730033AbfI3JX5 (ORCPT ); Mon, 30 Sep 2019 05:23:57 -0400 Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 6FBECBB73E85560E322F; Mon, 30 Sep 2019 17:23:53 +0800 (CST) Received: from localhost.localdomain (10.67.165.24) by DGGEMS405-HUB.china.huawei.com (10.3.19.205) with Microsoft SMTP Server id 14.3.439.0; Mon, 30 Sep 2019 17:23:46 +0800 From: Zaibo Xu To: , CC: , , , , Zaibo Xu , Hui Tang Subject: [PATCH 4/5] crypto: hisilicon: Add debugfs for HPRE Date: Mon, 30 Sep 2019 17:20:08 +0800 Message-ID: <1569835209-44326-5-git-send-email-xuzaibo@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1569835209-44326-1-git-send-email-xuzaibo@huawei.com> References: <1569835209-44326-1-git-send-email-xuzaibo@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-CFilter-Loop: Reflected Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org HiSilicon HPRE engine driver uses debugfs to provide debug information, the usage can be found in /Documentation/ABI/testing/debugfs-hisi-hpre. Signed-off-by: Zaibo Xu Signed-off-by: Hui Tang --- drivers/crypto/hisilicon/hpre/hpre.h | 36 ++- drivers/crypto/hisilicon/hpre/hpre_main.c | 426 +++++++++++++++++++++++++++++- 2 files changed, 460 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/hisilicon/hpre/hpre.h b/drivers/crypto/hisilicon/hpre/hpre.h index bcf825b..ddf13ea 100644 --- a/drivers/crypto/hisilicon/hpre/hpre.h +++ b/drivers/crypto/hisilicon/hpre/hpre.h @@ -9,11 +9,45 @@ #define HPRE_SQE_SIZE sizeof(struct hpre_sqe) #define HPRE_PF_DEF_Q_NUM 64 #define HPRE_PF_DEF_Q_BASE 0 -#define HPRE_CLUSTERS_NUM 4 + +enum { + HPRE_CLUSTER0, + HPRE_CLUSTER1, + HPRE_CLUSTER2, + HPRE_CLUSTER3, + HPRE_CLUSTERS_NUM, +}; + +enum hpre_ctrl_dbgfs_file { + HPRE_CURRENT_QM, + HPRE_CLEAR_ENABLE, + HPRE_CLUSTER_CTRL, + HPRE_DEBUG_FILE_NUM, +}; + +#define HPRE_DEBUGFS_FILE_NUM (HPRE_DEBUG_FILE_NUM + HPRE_CLUSTERS_NUM - 1) + +struct hpre_debugfs_file { + int index; + enum hpre_ctrl_dbgfs_file type; + spinlock_t lock; + struct hpre_debug *debug; +}; + +/* + * One HPRE controller has one PF and multiple VFs, some global configurations + * which PF has need this structure. + * Just relevant for PF. + */ +struct hpre_debug { + struct dentry *debug_root; + struct hpre_debugfs_file files[HPRE_DEBUGFS_FILE_NUM]; +}; struct hpre { struct hisi_qm qm; struct list_head list; + struct hpre_debug debug; u32 num_vfs; unsigned long status; }; diff --git a/drivers/crypto/hisilicon/hpre/hpre_main.c b/drivers/crypto/hisilicon/hpre/hpre_main.c index 31d01d3..ca945b2 100644 --- a/drivers/crypto/hisilicon/hpre/hpre_main.c +++ b/drivers/crypto/hisilicon/hpre/hpre_main.c @@ -3,6 +3,7 @@ #include #include #include +#include #include #include #include @@ -84,6 +85,7 @@ static LIST_HEAD(hpre_list); static DEFINE_MUTEX(hpre_list_lock); static const char hpre_name[] = "hisi_hpre"; +static struct dentry *hpre_debugfs_root; static const struct pci_device_id hpre_dev_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, HPRE_PCI_DEVICE_ID) }, { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, HPRE_PCI_VF_DEVICE_ID) }, @@ -97,6 +99,12 @@ struct hpre_hw_error { const char *msg; }; +static const char * const hpre_debug_file_name[] = { + [HPRE_CURRENT_QM] = "current_qm", + [HPRE_CLEAR_ENABLE] = "rdclr_en", + [HPRE_CLUSTER_CTRL] = "cluster_ctrl", +}; + static const struct hpre_hw_error hpre_hw_errors[] = { { .int_msk = BIT(0), .msg = "hpre_ecc_1bitt_err" }, { .int_msk = BIT(1), .msg = "hpre_ecc_2bit_err" }, @@ -113,6 +121,42 @@ static const struct hpre_hw_error hpre_hw_errors[] = { { /* sentinel */ } }; +static const u64 hpre_cluster_offsets[] = { + [HPRE_CLUSTER0] = + HPRE_CLSTR_BASE + HPRE_CLUSTER0 * HPRE_CLSTR_ADDR_INTRVL, + [HPRE_CLUSTER1] = + HPRE_CLSTR_BASE + HPRE_CLUSTER1 * HPRE_CLSTR_ADDR_INTRVL, + [HPRE_CLUSTER2] = + HPRE_CLSTR_BASE + HPRE_CLUSTER2 * HPRE_CLSTR_ADDR_INTRVL, + [HPRE_CLUSTER3] = + HPRE_CLSTR_BASE + HPRE_CLUSTER3 * HPRE_CLSTR_ADDR_INTRVL, +}; + +static struct debugfs_reg32 hpre_cluster_dfx_regs[] = { + {"CORES_EN_STATUS ", HPRE_CORE_EN_OFFSET}, + {"CORES_INI_CFG ", HPRE_CORE_INI_CFG_OFFSET}, + {"CORES_INI_STATUS ", HPRE_CORE_INI_STATUS_OFFSET}, + {"CORES_HTBT_WARN ", HPRE_CORE_HTBT_WARN_OFFSET}, + {"CORES_IS_SCHD ", HPRE_CORE_IS_SCHD_OFFSET}, +}; + +static struct debugfs_reg32 hpre_com_dfx_regs[] = { + {"READ_CLR_EN ", HPRE_CTRL_CNT_CLR_CE}, + {"AXQOS ", HPRE_VFG_AXQOS}, + {"AWUSR_CFG ", HPRE_AWUSR_FP_CFG}, + {"QM_ARUSR_MCFG1 ", QM_ARUSER_M_CFG_1}, + {"QM_AWUSR_MCFG1 ", QM_AWUSER_M_CFG_1}, + {"BD_ENDIAN ", HPRE_BD_ENDIAN}, + {"ECC_CHECK_CTRL ", HPRE_ECC_BYPASS}, + {"RAS_INT_WIDTH ", HPRE_RAS_WIDTH_CFG}, + {"POISON_BYPASS ", HPRE_POISON_BYPASS}, + {"BD_ARUSER ", HPRE_BD_ARUSR_CFG}, + {"BD_AWUSER ", HPRE_BD_AWUSR_CFG}, + {"DATA_ARUSER ", HPRE_DATA_RUSER_CFG}, + {"DATA_AWUSER ", HPRE_DATA_WUSER_CFG}, + {"INT_STATUS ", HPRE_INT_STATUS}, +}; + static int hpre_pf_q_num_set(const char *val, const struct kernel_param *kp) { struct pci_dev *pdev; @@ -284,6 +328,27 @@ static int hpre_set_user_domain_and_cache(struct hpre *hpre) return ret; } +static void hpre_cnt_regs_clear(struct hisi_qm *qm) +{ + unsigned long offset; + int i; + + /* clear current_qm */ + writel(0x0, qm->io_base + QM_DFX_MB_CNT_VF); + writel(0x0, qm->io_base + QM_DFX_DB_CNT_VF); + + /* clear clusterX/cluster_ctrl */ + for (i = 0; i < HPRE_CLUSTERS_NUM; i++) { + offset = HPRE_CLSTR_BASE + i * HPRE_CLSTR_ADDR_INTRVL; + writel(0x0, qm->io_base + offset + HPRE_CLUSTER_INQURY); + } + + /* clear rdclr_en */ + writel(0x0, qm->io_base + HPRE_CTRL_CNT_CLR_CE); + + hisi_qm_debug_regs_clear(qm); +} + static void hpre_hw_error_disable(struct hpre *hpre) { struct hisi_qm *qm = &hpre->qm; @@ -303,6 +368,335 @@ static void hpre_hw_error_enable(struct hpre *hpre) writel(HPRE_HAC_RAS_FE_ENABLE, qm->io_base + HPRE_RAS_FE_ENB); } +static inline struct hisi_qm *hpre_file_to_qm(struct hpre_debugfs_file *file) +{ + struct hpre *hpre = container_of(file->debug, struct hpre, debug); + + return &hpre->qm; +} + +static u32 hpre_current_qm_read(struct hpre_debugfs_file *file) +{ + struct hisi_qm *qm = hpre_file_to_qm(file); + + return readl(qm->io_base + QM_DFX_MB_CNT_VF); +} + +static int hpre_current_qm_write(struct hpre_debugfs_file *file, u32 val) +{ + struct hisi_qm *qm = hpre_file_to_qm(file); + struct hpre_debug *debug = file->debug; + struct hpre *hpre = container_of(debug, struct hpre, debug); + u32 num_vfs = hpre->num_vfs; + u32 vfq_num, tmp; + + + if (val > num_vfs) + return -EINVAL; + + /* According PF or VF Dev ID to calculation curr_qm_qp_num and store */ + if (val == 0) { + qm->debug.curr_qm_qp_num = qm->qp_num; + } else { + vfq_num = (qm->ctrl_qp_num - qm->qp_num) / num_vfs; + if (val == num_vfs) { + qm->debug.curr_qm_qp_num = + qm->ctrl_qp_num - qm->qp_num - (num_vfs - 1) * vfq_num; + } else { + qm->debug.curr_qm_qp_num = vfq_num; + } + } + + writel(val, qm->io_base + QM_DFX_MB_CNT_VF); + writel(val, qm->io_base + QM_DFX_DB_CNT_VF); + + tmp = val | + (readl(qm->io_base + QM_DFX_SQE_CNT_VF_SQN) & CURRENT_Q_MASK); + writel(tmp, qm->io_base + QM_DFX_SQE_CNT_VF_SQN); + + tmp = val | + (readl(qm->io_base + QM_DFX_CQE_CNT_VF_CQN) & CURRENT_Q_MASK); + writel(tmp, qm->io_base + QM_DFX_CQE_CNT_VF_CQN); + + return 0; +} + +static u32 hpre_clear_enable_read(struct hpre_debugfs_file *file) +{ + struct hisi_qm *qm = hpre_file_to_qm(file); + + return readl(qm->io_base + HPRE_CTRL_CNT_CLR_CE) & + HPRE_CTRL_CNT_CLR_CE_BIT; +} + +static int hpre_clear_enable_write(struct hpre_debugfs_file *file, u32 val) +{ + struct hisi_qm *qm = hpre_file_to_qm(file); + u32 tmp; + + if (val != 1 && val != 0) + return -EINVAL; + + tmp = (readl(qm->io_base + HPRE_CTRL_CNT_CLR_CE) & + ~HPRE_CTRL_CNT_CLR_CE_BIT) | val; + writel(tmp, qm->io_base + HPRE_CTRL_CNT_CLR_CE); + + return 0; +} + +static u32 hpre_cluster_inqry_read(struct hpre_debugfs_file *file) +{ + struct hisi_qm *qm = hpre_file_to_qm(file); + int cluster_index = file->index - HPRE_CLUSTER_CTRL; + unsigned long offset = HPRE_CLSTR_BASE + + cluster_index * HPRE_CLSTR_ADDR_INTRVL; + + return readl(qm->io_base + offset + HPRE_CLSTR_ADDR_INQRY_RSLT); +} + +static int hpre_cluster_inqry_write(struct hpre_debugfs_file *file, u32 val) +{ + struct hisi_qm *qm = hpre_file_to_qm(file); + int cluster_index = file->index - HPRE_CLUSTER_CTRL; + unsigned long offset = HPRE_CLSTR_BASE + cluster_index * + HPRE_CLSTR_ADDR_INTRVL; + + writel(val, qm->io_base + offset + HPRE_CLUSTER_INQURY); + + return 0; +} + +static ssize_t hpre_ctrl_debug_read(struct file *filp, char __user *buf, + size_t count, loff_t *pos) +{ + struct hpre_debugfs_file *file = filp->private_data; + char tbuf[HPRE_DBGFS_VAL_MAX_LEN]; + u32 val; + int ret; + + spin_lock_irq(&file->lock); + switch (file->type) { + case HPRE_CURRENT_QM: + val = hpre_current_qm_read(file); + break; + case HPRE_CLEAR_ENABLE: + val = hpre_clear_enable_read(file); + break; + case HPRE_CLUSTER_CTRL: + val = hpre_cluster_inqry_read(file); + break; + default: + spin_unlock_irq(&file->lock); + return -EINVAL; + } + spin_unlock_irq(&file->lock); + ret = sprintf(tbuf, "%u\n", val); + return simple_read_from_buffer(buf, count, pos, tbuf, ret); +} + +static ssize_t hpre_ctrl_debug_write(struct file *filp, const char __user *buf, + size_t count, loff_t *pos) +{ + struct hpre_debugfs_file *file = filp->private_data; + char tbuf[HPRE_DBGFS_VAL_MAX_LEN]; + unsigned long val; + int len, ret; + + if (*pos != 0) + return 0; + + if (count >= HPRE_DBGFS_VAL_MAX_LEN) + return -ENOSPC; + + len = simple_write_to_buffer(tbuf, HPRE_DBGFS_VAL_MAX_LEN - 1, + pos, buf, count); + if (len < 0) + return len; + + tbuf[len] = '\0'; + if (kstrtoul(tbuf, 0, &val)) + return -EFAULT; + + spin_lock_irq(&file->lock); + switch (file->type) { + case HPRE_CURRENT_QM: + ret = hpre_current_qm_write(file, val); + if (ret) + goto err_input; + break; + case HPRE_CLEAR_ENABLE: + ret = hpre_clear_enable_write(file, val); + if (ret) + goto err_input; + break; + case HPRE_CLUSTER_CTRL: + ret = hpre_cluster_inqry_write(file, val); + if (ret) + goto err_input; + break; + default: + ret = -EINVAL; + goto err_input; + } + spin_unlock_irq(&file->lock); + + return count; + +err_input: + spin_unlock_irq(&file->lock); + return ret; +} + +static const struct file_operations hpre_ctrl_debug_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = hpre_ctrl_debug_read, + .write = hpre_ctrl_debug_write, +}; + +static int hpre_create_debugfs_file(struct hpre_debug *dbg, struct dentry *dir, + enum hpre_ctrl_dbgfs_file type, int indx) +{ + struct dentry *tmp, *file_dir; + + if (dir) + file_dir = dir; + else + file_dir = dbg->debug_root; + + if (type >= HPRE_DEBUG_FILE_NUM) + return -EINVAL; + + spin_lock_init(&dbg->files[indx].lock); + dbg->files[indx].debug = dbg; + dbg->files[indx].type = type; + dbg->files[indx].index = indx; + tmp = debugfs_create_file(hpre_debug_file_name[type], 0600, file_dir, + dbg->files + indx, &hpre_ctrl_debug_fops); + if (!tmp) + return -ENOENT; + + return 0; +} + +static int hpre_pf_comm_regs_debugfs_init(struct hpre_debug *debug) +{ + struct hpre *hpre = container_of(debug, struct hpre, debug); + struct hisi_qm *qm = &hpre->qm; + struct device *dev = &qm->pdev->dev; + struct debugfs_regset32 *regset; + struct dentry *tmp; + + regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL); + if (!regset) + return -ENOMEM; + + regset->regs = hpre_com_dfx_regs; + regset->nregs = ARRAY_SIZE(hpre_com_dfx_regs); + regset->base = qm->io_base; + + tmp = debugfs_create_regset32("regs", 0444, debug->debug_root, regset); + if (!tmp) + return -ENOENT; + + return 0; +} + +static int hpre_cluster_debugfs_init(struct hpre_debug *debug) +{ + struct hpre *hpre = container_of(debug, struct hpre, debug); + struct hisi_qm *qm = &hpre->qm; + struct device *dev = &qm->pdev->dev; + char buf[HPRE_DBGFS_VAL_MAX_LEN]; + struct debugfs_regset32 *regset; + struct dentry *tmp_d, *tmp; + int i, ret; + + for (i = 0; i < HPRE_CLUSTERS_NUM; i++) { + sprintf(buf, "cluster%d", i); + + tmp_d = debugfs_create_dir(buf, debug->debug_root); + if (!tmp_d) + return -ENOENT; + + regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL); + if (!regset) + return -ENOMEM; + + regset->regs = hpre_cluster_dfx_regs; + regset->nregs = ARRAY_SIZE(hpre_cluster_dfx_regs); + regset->base = qm->io_base + hpre_cluster_offsets[i]; + + tmp = debugfs_create_regset32("regs", 0444, tmp_d, regset); + if (!tmp) + return -ENOENT; + ret = hpre_create_debugfs_file(debug, tmp_d, HPRE_CLUSTER_CTRL, + i + HPRE_CLUSTER_CTRL); + if (ret) + return ret; + } + + return 0; +} + +static int hpre_ctrl_debug_init(struct hpre_debug *debug) +{ + int ret; + + ret = hpre_create_debugfs_file(debug, NULL, HPRE_CURRENT_QM, + HPRE_CURRENT_QM); + if (ret) + return ret; + + ret = hpre_create_debugfs_file(debug, NULL, HPRE_CLEAR_ENABLE, + HPRE_CLEAR_ENABLE); + if (ret) + return ret; + + ret = hpre_pf_comm_regs_debugfs_init(debug); + if (ret) + return ret; + + return hpre_cluster_debugfs_init(debug); +} + +static int hpre_debugfs_init(struct hpre *hpre) +{ + struct hisi_qm *qm = &hpre->qm; + struct device *dev = &qm->pdev->dev; + struct dentry *dir; + int ret; + + dir = debugfs_create_dir(dev_name(dev), hpre_debugfs_root); + if (!dir) + return -ENOENT; + + qm->debug.debug_root = dir; + + ret = hisi_qm_debug_init(qm); + if (ret) + goto failed_to_create; + + if (qm->pdev->device == HPRE_PCI_DEVICE_ID) { + hpre->debug.debug_root = dir; + ret = hpre_ctrl_debug_init(&hpre->debug); + if (ret) + goto failed_to_create; + } + return 0; + +failed_to_create: + debugfs_remove_recursive(qm->debug.debug_root); + return ret; +} + +static void hpre_debugfs_exit(struct hpre *hpre) +{ + struct hisi_qm *qm = &hpre->qm; + + debugfs_remove_recursive(qm->debug.debug_root); +} + static int hpre_qm_pre_init(struct hisi_qm *qm, struct pci_dev *pdev) { enum qm_hw_ver rev_id; @@ -390,6 +784,10 @@ static int hpre_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (ret) goto err_with_err_init; + ret = hpre_debugfs_init(hpre); + if (ret) + dev_warn(&pdev->dev, "init debugfs fail!\n"); + hpre_add_to_list(hpre); ret = hpre_algs_register(); @@ -529,6 +927,12 @@ static void hpre_remove(struct pci_dev *pdev) return; } } + if (qm->fun_type == QM_HW_PF) { + hpre_cnt_regs_clear(qm); + qm->debug.curr_qm_qp_num = 0; + } + + hpre_debugfs_exit(hpre); hisi_qm_stop(qm); if (qm->fun_type == QM_HW_PF) hpre_hw_error_disable(hpre); @@ -604,13 +1008,32 @@ static struct pci_driver hpre_pci_driver = { .err_handler = &hpre_err_handler, }; +static void hpre_register_debugfs(void) +{ + if (!debugfs_initialized()) + return; + + hpre_debugfs_root = debugfs_create_dir(hpre_name, NULL); + if (IS_ERR_OR_NULL(hpre_debugfs_root)) + hpre_debugfs_root = NULL; +} + +static void hpre_unregister_debugfs(void) +{ + debugfs_remove_recursive(hpre_debugfs_root); +} + static int __init hpre_init(void) { int ret; + hpre_register_debugfs(); + ret = pci_register_driver(&hpre_pci_driver); - if (ret) + if (ret) { + hpre_unregister_debugfs(); pr_err("hpre: can't register hisi hpre driver.\n"); + } return ret; } @@ -618,6 +1041,7 @@ static int __init hpre_init(void) static void __exit hpre_exit(void) { pci_unregister_driver(&hpre_pci_driver); + hpre_unregister_debugfs(); } module_init(hpre_init);