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path: root/drivers/crypto/hisilicon/sec2/sec_main.c
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Diffstat (limited to 'drivers/crypto/hisilicon/sec2/sec_main.c')
-rw-r--r--drivers/crypto/hisilicon/sec2/sec_main.c1095
1 files changed, 1095 insertions, 0 deletions
diff --git a/drivers/crypto/hisilicon/sec2/sec_main.c b/drivers/crypto/hisilicon/sec2/sec_main.c
new file mode 100644
index 000000000000..74f0654028c9
--- /dev/null
+++ b/drivers/crypto/hisilicon/sec2/sec_main.c
@@ -0,0 +1,1095 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2019 HiSilicon Limited. */
+
+#include <linux/acpi.h>
+#include <linux/aer.h>
+#include <linux/bitops.h>
+#include <linux/debugfs.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/seq_file.h>
+#include <linux/topology.h>
+
+#include "sec.h"
+
+#define SEC_VF_NUM 63
+#define SEC_QUEUE_NUM_V1 4096
+#define SEC_QUEUE_NUM_V2 1024
+#define SEC_PF_PCI_DEVICE_ID 0xa255
+#define SEC_VF_PCI_DEVICE_ID 0xa256
+
+#define SEC_XTS_MIV_ENABLE_REG 0x301384
+#define SEC_XTS_MIV_ENABLE_MSK 0x7FFFFFFF
+#define SEC_XTS_MIV_DISABLE_MSK 0xFFFFFFFF
+#define SEC_BD_ERR_CHK_EN1 0xfffff7fd
+#define SEC_BD_ERR_CHK_EN2 0xffffbfff
+
+#define SEC_SQE_SIZE 128
+#define SEC_SQ_SIZE (SEC_SQE_SIZE * QM_Q_DEPTH)
+#define SEC_PF_DEF_Q_NUM 64
+#define SEC_PF_DEF_Q_BASE 0
+#define SEC_CTX_Q_NUM_DEF 24
+
+#define SEC_CTRL_CNT_CLR_CE 0x301120
+#define SEC_CTRL_CNT_CLR_CE_BIT BIT(0)
+#define SEC_ENGINE_PF_CFG_OFF 0x300000
+#define SEC_ACC_COMMON_REG_OFF 0x1000
+#define SEC_CORE_INT_SOURCE 0x301010
+#define SEC_CORE_INT_MASK 0x301000
+#define SEC_CORE_INT_STATUS 0x301008
+#define SEC_CORE_SRAM_ECC_ERR_INFO 0x301C14
+#define SEC_ECC_NUM(err) (((err) >> 16) & 0xFF)
+#define SEC_ECC_ADDR(err) ((err) >> 0)
+#define SEC_CORE_INT_DISABLE 0x0
+#define SEC_CORE_INT_ENABLE 0x1ff
+
+#define SEC_RAS_CE_REG 0x50
+#define SEC_RAS_FE_REG 0x54
+#define SEC_RAS_NFE_REG 0x58
+#define SEC_RAS_CE_ENB_MSK 0x88
+#define SEC_RAS_FE_ENB_MSK 0x0
+#define SEC_RAS_NFE_ENB_MSK 0x177
+#define SEC_RAS_DISABLE 0x0
+#define SEC_MEM_START_INIT_REG 0x0100
+#define SEC_MEM_INIT_DONE_REG 0x0104
+#define SEC_QM_ABNORMAL_INT_MASK 0x100004
+
+#define SEC_CONTROL_REG 0x0200
+#define SEC_TRNG_EN_SHIFT 8
+#define SEC_CLK_GATE_ENABLE BIT(3)
+#define SEC_CLK_GATE_DISABLE (~BIT(3))
+#define SEC_AXI_SHUTDOWN_ENABLE BIT(12)
+#define SEC_AXI_SHUTDOWN_DISABLE 0xFFFFEFFF
+
+#define SEC_INTERFACE_USER_CTRL0_REG 0x0220
+#define SEC_INTERFACE_USER_CTRL1_REG 0x0224
+#define SEC_BD_ERR_CHK_EN_REG1 0x0384
+#define SEC_BD_ERR_CHK_EN_REG2 0x038c
+
+#define SEC_USER0_SMMU_NORMAL (BIT(23) | BIT(15))
+#define SEC_USER1_SMMU_NORMAL (BIT(31) | BIT(23) | BIT(15) | BIT(7))
+#define SEC_CORE_INT_STATUS_M_ECC BIT(2)
+
+#define SEC_DELAY_10_US 10
+#define SEC_POLL_TIMEOUT_US 1000
+#define SEC_VF_CNT_MASK 0xffffffc0
+#define SEC_DBGFS_VAL_MAX_LEN 20
+
+#define SEC_ADDR(qm, offset) ((qm)->io_base + (offset) + \
+ SEC_ENGINE_PF_CFG_OFF + SEC_ACC_COMMON_REG_OFF)
+
+struct sec_hw_error {
+ u32 int_msk;
+ const char *msg;
+};
+
+static const char sec_name[] = "hisi_sec2";
+static struct dentry *sec_debugfs_root;
+static LIST_HEAD(sec_list);
+static DEFINE_MUTEX(sec_list_lock);
+
+static const struct sec_hw_error sec_hw_errors[] = {
+ {.int_msk = BIT(0), .msg = "sec_axi_rresp_err_rint"},
+ {.int_msk = BIT(1), .msg = "sec_axi_bresp_err_rint"},
+ {.int_msk = BIT(2), .msg = "sec_ecc_2bit_err_rint"},
+ {.int_msk = BIT(3), .msg = "sec_ecc_1bit_err_rint"},
+ {.int_msk = BIT(4), .msg = "sec_req_trng_timeout_rint"},
+ {.int_msk = BIT(5), .msg = "sec_fsm_hbeat_rint"},
+ {.int_msk = BIT(6), .msg = "sec_channel_req_rng_timeout_rint"},
+ {.int_msk = BIT(7), .msg = "sec_bd_err_rint"},
+ {.int_msk = BIT(8), .msg = "sec_chain_buff_err_rint"},
+ { /* sentinel */ }
+};
+
+struct sec_dev *sec_find_device(int node)
+{
+#define SEC_NUMA_MAX_DISTANCE 100
+ int min_distance = SEC_NUMA_MAX_DISTANCE;
+ int dev_node = 0, free_qp_num = 0;
+ struct sec_dev *sec, *ret = NULL;
+ struct hisi_qm *qm;
+ struct device *dev;
+
+ mutex_lock(&sec_list_lock);
+ list_for_each_entry(sec, &sec_list, list) {
+ qm = &sec->qm;
+ dev = &qm->pdev->dev;
+#ifdef CONFIG_NUMA
+ dev_node = dev->numa_node;
+ if (dev_node < 0)
+ dev_node = 0;
+#endif
+ if (node_distance(dev_node, node) < min_distance) {
+ free_qp_num = hisi_qm_get_free_qp_num(qm);
+ if (free_qp_num >= sec->ctx_q_num) {
+ ret = sec;
+ min_distance = node_distance(dev_node, node);
+ }
+ }
+ }
+ mutex_unlock(&sec_list_lock);
+
+ return ret;
+}
+
+static const char * const sec_dbg_file_name[] = {
+ [SEC_CURRENT_QM] = "current_qm",
+ [SEC_CLEAR_ENABLE] = "clear_enable",
+};
+
+static struct debugfs_reg32 sec_dfx_regs[] = {
+ {"SEC_PF_ABNORMAL_INT_SOURCE ", 0x301010},
+ {"SEC_SAA_EN ", 0x301270},
+ {"SEC_BD_LATENCY_MIN ", 0x301600},
+ {"SEC_BD_LATENCY_MAX ", 0x301608},
+ {"SEC_BD_LATENCY_AVG ", 0x30160C},
+ {"SEC_BD_NUM_IN_SAA0 ", 0x301670},
+ {"SEC_BD_NUM_IN_SAA1 ", 0x301674},
+ {"SEC_BD_NUM_IN_SEC ", 0x301680},
+ {"SEC_ECC_1BIT_CNT ", 0x301C00},
+ {"SEC_ECC_1BIT_INFO ", 0x301C04},
+ {"SEC_ECC_2BIT_CNT ", 0x301C10},
+ {"SEC_ECC_2BIT_INFO ", 0x301C14},
+ {"SEC_BD_SAA0 ", 0x301C20},
+ {"SEC_BD_SAA1 ", 0x301C24},
+ {"SEC_BD_SAA2 ", 0x301C28},
+ {"SEC_BD_SAA3 ", 0x301C2C},
+ {"SEC_BD_SAA4 ", 0x301C30},
+ {"SEC_BD_SAA5 ", 0x301C34},
+ {"SEC_BD_SAA6 ", 0x301C38},
+ {"SEC_BD_SAA7 ", 0x301C3C},
+ {"SEC_BD_SAA8 ", 0x301C40},
+};
+
+static int sec_pf_q_num_set(const char *val, const struct kernel_param *kp)
+{
+ struct pci_dev *pdev;
+ u32 n, q_num;
+ u8 rev_id;
+ int ret;
+
+ if (!val)
+ return -EINVAL;
+
+ pdev = pci_get_device(PCI_VENDOR_ID_HUAWEI,
+ SEC_PF_PCI_DEVICE_ID, NULL);
+ if (!pdev) {
+ q_num = min_t(u32, SEC_QUEUE_NUM_V1, SEC_QUEUE_NUM_V2);
+ pr_info("No device, suppose queue number is %d!\n", q_num);
+ } else {
+ rev_id = pdev->revision;
+
+ switch (rev_id) {
+ case QM_HW_V1:
+ q_num = SEC_QUEUE_NUM_V1;
+ break;
+ case QM_HW_V2:
+ q_num = SEC_QUEUE_NUM_V2;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ ret = kstrtou32(val, 10, &n);
+ if (ret || !n || n > q_num)
+ return -EINVAL;
+
+ return param_set_int(val, kp);
+}
+
+static const struct kernel_param_ops sec_pf_q_num_ops = {
+ .set = sec_pf_q_num_set,
+ .get = param_get_int,
+};
+static u32 pf_q_num = SEC_PF_DEF_Q_NUM;
+module_param_cb(pf_q_num, &sec_pf_q_num_ops, &pf_q_num, 0444);
+MODULE_PARM_DESC(pf_q_num, "Number of queues in PF(v1 0-4096, v2 0-1024)");
+
+static int sec_ctx_q_num_set(const char *val, const struct kernel_param *kp)
+{
+ u32 ctx_q_num;
+ int ret;
+
+ if (!val)
+ return -EINVAL;
+
+ ret = kstrtou32(val, 10, &ctx_q_num);
+ if (ret)
+ return -EINVAL;
+
+ if (!ctx_q_num || ctx_q_num > QM_Q_DEPTH || ctx_q_num & 0x1) {
+ pr_err("ctx queue num[%u] is invalid!\n", ctx_q_num);
+ return -EINVAL;
+ }
+
+ return param_set_int(val, kp);
+}
+
+static const struct kernel_param_ops sec_ctx_q_num_ops = {
+ .set = sec_ctx_q_num_set,
+ .get = param_get_int,
+};
+static u32 ctx_q_num = SEC_CTX_Q_NUM_DEF;
+module_param_cb(ctx_q_num, &sec_ctx_q_num_ops, &ctx_q_num, 0444);
+MODULE_PARM_DESC(ctx_q_num, "Number of queue in ctx (2, 4, 6, ..., 1024)");
+
+static const struct pci_device_id sec_dev_ids[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, SEC_PF_PCI_DEVICE_ID) },
+ { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, SEC_VF_PCI_DEVICE_ID) },
+ { 0, }
+};
+MODULE_DEVICE_TABLE(pci, sec_dev_ids);
+
+static inline void sec_add_to_list(struct sec_dev *sec)
+{
+ mutex_lock(&sec_list_lock);
+ list_add_tail(&sec->list, &sec_list);
+ mutex_unlock(&sec_list_lock);
+}
+
+static inline void sec_remove_from_list(struct sec_dev *sec)
+{
+ mutex_lock(&sec_list_lock);
+ list_del(&sec->list);
+ mutex_unlock(&sec_list_lock);
+}
+
+static u8 sec_get_endian(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ u32 reg;
+
+ /*
+ * As for VF, it is a wrong way to get endian setting by
+ * reading a register of the engine
+ */
+ if (qm->pdev->is_virtfn) {
+ dev_err_ratelimited(&qm->pdev->dev,
+ "cannot access a register in VF!\n");
+ return SEC_LE;
+ }
+ reg = readl_relaxed(qm->io_base + SEC_ENGINE_PF_CFG_OFF +
+ SEC_ACC_COMMON_REG_OFF + SEC_CONTROL_REG);
+
+ /* BD little endian mode */
+ if (!(reg & BIT(0)))
+ return SEC_LE;
+
+ /* BD 32-bits big endian mode */
+ else if (!(reg & BIT(1)))
+ return SEC_32BE;
+
+ /* BD 64-bits big endian mode */
+ else
+ return SEC_64BE;
+}
+
+static int sec_engine_init(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ int ret;
+ u32 reg;
+
+ /* disable clock gate control */
+ reg = readl_relaxed(SEC_ADDR(qm, SEC_CONTROL_REG));
+ reg &= SEC_CLK_GATE_DISABLE;
+ writel_relaxed(reg, SEC_ADDR(qm, SEC_CONTROL_REG));
+
+ writel_relaxed(0x1, SEC_ADDR(qm, SEC_MEM_START_INIT_REG));
+
+ ret = readl_relaxed_poll_timeout(SEC_ADDR(qm, SEC_MEM_INIT_DONE_REG),
+ reg, reg & 0x1, SEC_DELAY_10_US,
+ SEC_POLL_TIMEOUT_US);
+ if (ret) {
+ dev_err(&qm->pdev->dev, "fail to init sec mem\n");
+ return ret;
+ }
+
+ reg = readl_relaxed(SEC_ADDR(qm, SEC_CONTROL_REG));
+ reg |= (0x1 << SEC_TRNG_EN_SHIFT);
+ writel_relaxed(reg, SEC_ADDR(qm, SEC_CONTROL_REG));
+
+ reg = readl_relaxed(SEC_ADDR(qm, SEC_INTERFACE_USER_CTRL0_REG));
+ reg |= SEC_USER0_SMMU_NORMAL;
+ writel_relaxed(reg, SEC_ADDR(qm, SEC_INTERFACE_USER_CTRL0_REG));
+
+ reg = readl_relaxed(SEC_ADDR(qm, SEC_INTERFACE_USER_CTRL1_REG));
+ reg |= SEC_USER1_SMMU_NORMAL;
+ writel_relaxed(reg, SEC_ADDR(qm, SEC_INTERFACE_USER_CTRL1_REG));
+
+ writel_relaxed(SEC_BD_ERR_CHK_EN1,
+ SEC_ADDR(qm, SEC_BD_ERR_CHK_EN_REG1));
+ writel_relaxed(SEC_BD_ERR_CHK_EN2,
+ SEC_ADDR(qm, SEC_BD_ERR_CHK_EN_REG2));
+
+ /* enable clock gate control */
+ reg = readl_relaxed(SEC_ADDR(qm, SEC_CONTROL_REG));
+ reg |= SEC_CLK_GATE_ENABLE;
+ writel_relaxed(reg, SEC_ADDR(qm, SEC_CONTROL_REG));
+
+ /* config endian */
+ reg = readl_relaxed(SEC_ADDR(qm, SEC_CONTROL_REG));
+ reg |= sec_get_endian(sec);
+ writel_relaxed(reg, SEC_ADDR(qm, SEC_CONTROL_REG));
+
+ /* Enable sm4 xts mode multiple iv */
+ writel_relaxed(SEC_XTS_MIV_ENABLE_MSK,
+ qm->io_base + SEC_XTS_MIV_ENABLE_REG);
+
+ return 0;
+}
+
+static int sec_set_user_domain_and_cache(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+
+ /* qm user domain */
+ writel(AXUSER_BASE, qm->io_base + QM_ARUSER_M_CFG_1);
+ writel(ARUSER_M_CFG_ENABLE, qm->io_base + QM_ARUSER_M_CFG_ENABLE);
+ writel(AXUSER_BASE, qm->io_base + QM_AWUSER_M_CFG_1);
+ writel(AWUSER_M_CFG_ENABLE, qm->io_base + QM_AWUSER_M_CFG_ENABLE);
+ writel(WUSER_M_CFG_ENABLE, qm->io_base + QM_WUSER_M_CFG_ENABLE);
+
+ /* qm cache */
+ writel(AXI_M_CFG, qm->io_base + QM_AXI_M_CFG);
+ writel(AXI_M_CFG_ENABLE, qm->io_base + QM_AXI_M_CFG_ENABLE);
+
+ /* disable FLR triggered by BME(bus master enable) */
+ writel(PEH_AXUSER_CFG, qm->io_base + QM_PEH_AXUSER_CFG);
+ writel(PEH_AXUSER_CFG_ENABLE, qm->io_base + QM_PEH_AXUSER_CFG_ENABLE);
+
+ /* enable sqc,cqc writeback */
+ writel(SQC_CACHE_ENABLE | CQC_CACHE_ENABLE | SQC_CACHE_WB_ENABLE |
+ CQC_CACHE_WB_ENABLE | FIELD_PREP(SQC_CACHE_WB_THRD, 1) |
+ FIELD_PREP(CQC_CACHE_WB_THRD, 1), qm->io_base + QM_CACHE_CTL);
+
+ return sec_engine_init(sec);
+}
+
+/* sec_debug_regs_clear() - clear the sec debug regs */
+static void sec_debug_regs_clear(struct hisi_qm *qm)
+{
+ /* clear current_qm */
+ writel(0x0, qm->io_base + QM_DFX_MB_CNT_VF);
+ writel(0x0, qm->io_base + QM_DFX_DB_CNT_VF);
+
+ /* clear rdclr_en */
+ writel(0x0, qm->io_base + SEC_CTRL_CNT_CLR_CE);
+
+ hisi_qm_debug_regs_clear(qm);
+}
+
+static void sec_hw_error_enable(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ u32 val;
+
+ if (qm->ver == QM_HW_V1) {
+ writel(SEC_CORE_INT_DISABLE, qm->io_base + SEC_CORE_INT_MASK);
+ dev_info(&qm->pdev->dev, "V1 not support hw error handle\n");
+ return;
+ }
+
+ val = readl(qm->io_base + SEC_CONTROL_REG);
+
+ /* clear SEC hw error source if having */
+ writel(SEC_CORE_INT_DISABLE, qm->io_base + SEC_CORE_INT_SOURCE);
+
+ /* enable SEC hw error interrupts */
+ writel(SEC_CORE_INT_ENABLE, qm->io_base + SEC_CORE_INT_MASK);
+
+ /* enable RAS int */
+ writel(SEC_RAS_CE_ENB_MSK, qm->io_base + SEC_RAS_CE_REG);
+ writel(SEC_RAS_FE_ENB_MSK, qm->io_base + SEC_RAS_FE_REG);
+ writel(SEC_RAS_NFE_ENB_MSK, qm->io_base + SEC_RAS_NFE_REG);
+
+ /* enable SEC block master OOO when m-bit error occur */
+ val = val | SEC_AXI_SHUTDOWN_ENABLE;
+
+ writel(val, qm->io_base + SEC_CONTROL_REG);
+}
+
+static void sec_hw_error_disable(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ u32 val;
+
+ val = readl(qm->io_base + SEC_CONTROL_REG);
+
+ /* disable RAS int */
+ writel(SEC_RAS_DISABLE, qm->io_base + SEC_RAS_CE_REG);
+ writel(SEC_RAS_DISABLE, qm->io_base + SEC_RAS_FE_REG);
+ writel(SEC_RAS_DISABLE, qm->io_base + SEC_RAS_NFE_REG);
+
+ /* disable SEC hw error interrupts */
+ writel(SEC_CORE_INT_DISABLE, qm->io_base + SEC_CORE_INT_MASK);
+
+ /* disable SEC block master OOO when m-bit error occur */
+ val = val & SEC_AXI_SHUTDOWN_DISABLE;
+
+ writel(val, qm->io_base + SEC_CONTROL_REG);
+}
+
+static void sec_hw_error_init(struct sec_dev *sec)
+{
+ if (sec->qm.fun_type == QM_HW_VF)
+ return;
+
+ hisi_qm_hw_error_init(&sec->qm, QM_BASE_CE,
+ QM_BASE_NFE | QM_ACC_DO_TASK_TIMEOUT
+ | QM_ACC_WB_NOT_READY_TIMEOUT, 0,
+ QM_DB_RANDOM_INVALID);
+ sec_hw_error_enable(sec);
+}
+
+static void sec_hw_error_uninit(struct sec_dev *sec)
+{
+ if (sec->qm.fun_type == QM_HW_VF)
+ return;
+
+ sec_hw_error_disable(sec);
+ writel(GENMASK(12, 0), sec->qm.io_base + SEC_QM_ABNORMAL_INT_MASK);
+}
+
+static u32 sec_current_qm_read(struct sec_debug_file *file)
+{
+ struct hisi_qm *qm = file->qm;
+
+ return readl(qm->io_base + QM_DFX_MB_CNT_VF);
+}
+
+static int sec_current_qm_write(struct sec_debug_file *file, u32 val)
+{
+ struct hisi_qm *qm = file->qm;
+ struct sec_dev *sec = container_of(qm, struct sec_dev, qm);
+ u32 vfq_num;
+ u32 tmp;
+
+ if (val > sec->num_vfs)
+ return -EINVAL;
+
+ /* According PF or VF Dev ID to calculation curr_qm_qp_num and store */
+ if (!val) {
+ qm->debug.curr_qm_qp_num = qm->qp_num;
+ } else {
+ vfq_num = (qm->ctrl_qp_num - qm->qp_num) / sec->num_vfs;
+
+ if (val == sec->num_vfs)
+ qm->debug.curr_qm_qp_num =
+ qm->ctrl_qp_num - qm->qp_num -
+ (sec->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 sec_clear_enable_read(struct sec_debug_file *file)
+{
+ struct hisi_qm *qm = file->qm;
+
+ return readl(qm->io_base + SEC_CTRL_CNT_CLR_CE) &
+ SEC_CTRL_CNT_CLR_CE_BIT;
+}
+
+static int sec_clear_enable_write(struct sec_debug_file *file, u32 val)
+{
+ struct hisi_qm *qm = file->qm;
+ u32 tmp;
+
+ if (val != 1 && val)
+ return -EINVAL;
+
+ tmp = (readl(qm->io_base + SEC_CTRL_CNT_CLR_CE) &
+ ~SEC_CTRL_CNT_CLR_CE_BIT) | val;
+ writel(tmp, qm->io_base + SEC_CTRL_CNT_CLR_CE);
+
+ return 0;
+}
+
+static ssize_t sec_debug_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct sec_debug_file *file = filp->private_data;
+ char tbuf[SEC_DBGFS_VAL_MAX_LEN];
+ u32 val;
+ int ret;
+
+ spin_lock_irq(&file->lock);
+
+ switch (file->index) {
+ case SEC_CURRENT_QM:
+ val = sec_current_qm_read(file);
+ break;
+ case SEC_CLEAR_ENABLE:
+ val = sec_clear_enable_read(file);
+ break;
+ default:
+ spin_unlock_irq(&file->lock);
+ return -EINVAL;
+ }
+
+ spin_unlock_irq(&file->lock);
+ ret = snprintf(tbuf, SEC_DBGFS_VAL_MAX_LEN, "%u\n", val);
+
+ return simple_read_from_buffer(buf, count, pos, tbuf, ret);
+}
+
+static ssize_t sec_debug_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct sec_debug_file *file = filp->private_data;
+ char tbuf[SEC_DBGFS_VAL_MAX_LEN];
+ unsigned long val;
+ int len, ret;
+
+ if (*pos != 0)
+ return 0;
+
+ if (count >= SEC_DBGFS_VAL_MAX_LEN)
+ return -ENOSPC;
+
+ len = simple_write_to_buffer(tbuf, SEC_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->index) {
+ case SEC_CURRENT_QM:
+ ret = sec_current_qm_write(file, val);
+ if (ret)
+ goto err_input;
+ break;
+ case SEC_CLEAR_ENABLE:
+ ret = sec_clear_enable_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 sec_dbg_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = sec_debug_read,
+ .write = sec_debug_write,
+};
+
+static int sec_core_debug_init(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ struct device *dev = &qm->pdev->dev;
+ struct sec_dfx *dfx = &sec->debug.dfx;
+ struct debugfs_regset32 *regset;
+ struct dentry *tmp_d;
+
+ tmp_d = debugfs_create_dir("sec_dfx", sec->qm.debug.debug_root);
+
+ regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL);
+ if (!regset)
+ return -ENOENT;
+
+ regset->regs = sec_dfx_regs;
+ regset->nregs = ARRAY_SIZE(sec_dfx_regs);
+ regset->base = qm->io_base;
+
+ debugfs_create_regset32("regs", 0444, tmp_d, regset);
+
+ debugfs_create_u64("send_cnt", 0444, tmp_d, &dfx->send_cnt);
+
+ debugfs_create_u64("recv_cnt", 0444, tmp_d, &dfx->recv_cnt);
+
+ return 0;
+}
+
+static int sec_debug_init(struct sec_dev *sec)
+{
+ int i;
+
+ for (i = SEC_CURRENT_QM; i < SEC_DEBUG_FILE_NUM; i++) {
+ spin_lock_init(&sec->debug.files[i].lock);
+ sec->debug.files[i].index = i;
+ sec->debug.files[i].qm = &sec->qm;
+
+ debugfs_create_file(sec_dbg_file_name[i], 0600,
+ sec->qm.debug.debug_root,
+ sec->debug.files + i,
+ &sec_dbg_fops);
+ }
+
+ return sec_core_debug_init(sec);
+}
+
+static int sec_debugfs_init(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ struct device *dev = &qm->pdev->dev;
+ int ret;
+
+ qm->debug.debug_root = debugfs_create_dir(dev_name(dev),
+ sec_debugfs_root);
+ ret = hisi_qm_debug_init(qm);
+ if (ret)
+ goto failed_to_create;
+
+ if (qm->pdev->device == SEC_PF_PCI_DEVICE_ID) {
+ ret = sec_debug_init(sec);
+ if (ret)
+ goto failed_to_create;
+ }
+
+ return 0;
+
+failed_to_create:
+ debugfs_remove_recursive(sec_debugfs_root);
+
+ return ret;
+}
+
+static void sec_debugfs_exit(struct sec_dev *sec)
+{
+ debugfs_remove_recursive(sec->qm.debug.debug_root);
+}
+
+static int sec_pf_probe_init(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ int ret;
+
+ switch (qm->ver) {
+ case QM_HW_V1:
+ qm->ctrl_qp_num = SEC_QUEUE_NUM_V1;
+ break;
+
+ case QM_HW_V2:
+ qm->ctrl_qp_num = SEC_QUEUE_NUM_V2;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ ret = sec_set_user_domain_and_cache(sec);
+ if (ret)
+ return ret;
+
+ sec_hw_error_init(sec);
+ sec_debug_regs_clear(qm);
+
+ return 0;
+}
+
+static int sec_qm_init(struct hisi_qm *qm, struct pci_dev *pdev)
+{
+ enum qm_hw_ver rev_id;
+
+ rev_id = hisi_qm_get_hw_version(pdev);
+ if (rev_id == QM_HW_UNKNOWN)
+ return -ENODEV;
+
+ qm->pdev = pdev;
+ qm->ver = rev_id;
+
+ qm->sqe_size = SEC_SQE_SIZE;
+ qm->dev_name = sec_name;
+ qm->fun_type = (pdev->device == SEC_PF_PCI_DEVICE_ID) ?
+ QM_HW_PF : QM_HW_VF;
+ qm->use_dma_api = true;
+
+ return hisi_qm_init(qm);
+}
+
+static void sec_qm_uninit(struct hisi_qm *qm)
+{
+ hisi_qm_uninit(qm);
+}
+
+static int sec_probe_init(struct hisi_qm *qm, struct sec_dev *sec)
+{
+ if (qm->fun_type == QM_HW_PF) {
+ qm->qp_base = SEC_PF_DEF_Q_BASE;
+ qm->qp_num = pf_q_num;
+ qm->debug.curr_qm_qp_num = pf_q_num;
+
+ return sec_pf_probe_init(sec);
+ } else if (qm->fun_type == QM_HW_VF) {
+ /*
+ * have no way to get qm configure in VM in v1 hardware,
+ * so currently force PF to uses SEC_PF_DEF_Q_NUM, and force
+ * to trigger only one VF in v1 hardware.
+ * v2 hardware has no such problem.
+ */
+ if (qm->ver == QM_HW_V1) {
+ qm->qp_base = SEC_PF_DEF_Q_NUM;
+ qm->qp_num = SEC_QUEUE_NUM_V1 - SEC_PF_DEF_Q_NUM;
+ } else if (qm->ver == QM_HW_V2) {
+ /* v2 starts to support get vft by mailbox */
+ return hisi_qm_get_vft(qm, &qm->qp_base, &qm->qp_num);
+ }
+ } else {
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void sec_probe_uninit(struct sec_dev *sec)
+{
+ sec_hw_error_uninit(sec);
+}
+
+static int sec_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct sec_dev *sec;
+ struct hisi_qm *qm;
+ int ret;
+
+ sec = devm_kzalloc(&pdev->dev, sizeof(*sec), GFP_KERNEL);
+ if (!sec)
+ return -ENOMEM;
+
+ pci_set_drvdata(pdev, sec);
+
+ sec->ctx_q_num = ctx_q_num;
+
+ qm = &sec->qm;
+
+ ret = sec_qm_init(qm, pdev);
+ if (ret) {
+ pci_err(pdev, "Failed to pre init qm!\n");
+ return ret;
+ }
+
+ ret = sec_probe_init(qm, sec);
+ if (ret) {
+ pci_err(pdev, "Failed to probe!\n");
+ goto err_qm_uninit;
+ }
+
+ ret = hisi_qm_start(qm);
+ if (ret) {
+ pci_err(pdev, "Failed to start sec qm!\n");
+ goto err_probe_uninit;
+ }
+
+ ret = sec_debugfs_init(sec);
+ if (ret)
+ pci_warn(pdev, "Failed to init debugfs!\n");
+
+ sec_add_to_list(sec);
+
+ ret = sec_register_to_crypto();
+ if (ret < 0) {
+ pr_err("Failed to register driver to crypto.\n");
+ goto err_remove_from_list;
+ }
+
+ return 0;
+
+err_remove_from_list:
+ sec_remove_from_list(sec);
+ sec_debugfs_exit(sec);
+ hisi_qm_stop(qm);
+
+err_probe_uninit:
+ sec_probe_uninit(sec);
+
+err_qm_uninit:
+ sec_qm_uninit(qm);
+
+ return ret;
+}
+
+/* now we only support equal assignment */
+static int sec_vf_q_assign(struct sec_dev *sec, u32 num_vfs)
+{
+ struct hisi_qm *qm = &sec->qm;
+ u32 qp_num = qm->qp_num;
+ u32 q_base = qp_num;
+ u32 q_num, remain_q_num;
+ int i, j, ret;
+
+ if (!num_vfs)
+ return -EINVAL;
+
+ remain_q_num = qm->ctrl_qp_num - qp_num;
+ q_num = remain_q_num / num_vfs;
+
+ for (i = 1; i <= num_vfs; i++) {
+ if (i == num_vfs)
+ q_num += remain_q_num % num_vfs;
+ ret = hisi_qm_set_vft(qm, i, q_base, q_num);
+ if (ret) {
+ for (j = i; j > 0; j--)
+ hisi_qm_set_vft(qm, j, 0, 0);
+ return ret;
+ }
+ q_base += q_num;
+ }
+
+ return 0;
+}
+
+static int sec_clear_vft_config(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ u32 num_vfs = sec->num_vfs;
+ int ret;
+ u32 i;
+
+ for (i = 1; i <= num_vfs; i++) {
+ ret = hisi_qm_set_vft(qm, i, 0, 0);
+ if (ret)
+ return ret;
+ }
+
+ sec->num_vfs = 0;
+
+ return 0;
+}
+
+static int sec_sriov_enable(struct pci_dev *pdev, int max_vfs)
+{
+ struct sec_dev *sec = pci_get_drvdata(pdev);
+ int pre_existing_vfs, ret;
+ u32 num_vfs;
+
+ pre_existing_vfs = pci_num_vf(pdev);
+
+ if (pre_existing_vfs) {
+ pci_err(pdev, "Can't enable VF. Please disable at first!\n");
+ return 0;
+ }
+
+ num_vfs = min_t(u32, max_vfs, SEC_VF_NUM);
+
+ ret = sec_vf_q_assign(sec, num_vfs);
+ if (ret) {
+ pci_err(pdev, "Can't assign queues for VF!\n");
+ return ret;
+ }
+
+ sec->num_vfs = num_vfs;
+
+ ret = pci_enable_sriov(pdev, num_vfs);
+ if (ret) {
+ pci_err(pdev, "Can't enable VF!\n");
+ sec_clear_vft_config(sec);
+ return ret;
+ }
+
+ return num_vfs;
+}
+
+static int sec_sriov_disable(struct pci_dev *pdev)
+{
+ struct sec_dev *sec = pci_get_drvdata(pdev);
+
+ if (pci_vfs_assigned(pdev)) {
+ pci_err(pdev, "Can't disable VFs while VFs are assigned!\n");
+ return -EPERM;
+ }
+
+ /* remove in sec_pci_driver will be called to free VF resources */
+ pci_disable_sriov(pdev);
+
+ return sec_clear_vft_config(sec);
+}
+
+static int sec_sriov_configure(struct pci_dev *pdev, int num_vfs)
+{
+ if (num_vfs)
+ return sec_sriov_enable(pdev, num_vfs);
+ else
+ return sec_sriov_disable(pdev);
+}
+
+static void sec_remove(struct pci_dev *pdev)
+{
+ struct sec_dev *sec = pci_get_drvdata(pdev);
+ struct hisi_qm *qm = &sec->qm;
+
+ sec_unregister_from_crypto();
+
+ sec_remove_from_list(sec);
+
+ if (qm->fun_type == QM_HW_PF && sec->num_vfs)
+ (void)sec_sriov_disable(pdev);
+
+ sec_debugfs_exit(sec);
+
+ (void)hisi_qm_stop(qm);
+
+ if (qm->fun_type == QM_HW_PF)
+ sec_debug_regs_clear(qm);
+
+ sec_probe_uninit(sec);
+
+ sec_qm_uninit(qm);
+}
+
+static void sec_log_hw_error(struct sec_dev *sec, u32 err_sts)
+{
+ const struct sec_hw_error *errs = sec_hw_errors;
+ struct device *dev = &sec->qm.pdev->dev;
+ u32 err_val;
+
+ while (errs->msg) {
+ if (errs->int_msk & err_sts) {
+ dev_err(dev, "%s [error status=0x%x] found\n",
+ errs->msg, errs->int_msk);
+
+ if (SEC_CORE_INT_STATUS_M_ECC & err_sts) {
+ err_val = readl(sec->qm.io_base +
+ SEC_CORE_SRAM_ECC_ERR_INFO);
+ dev_err(dev, "multi ecc sram num=0x%x\n",
+ SEC_ECC_NUM(err_val));
+ dev_err(dev, "multi ecc sram addr=0x%x\n",
+ SEC_ECC_ADDR(err_val));
+ }
+ }
+ errs++;
+ }
+}
+
+static pci_ers_result_t sec_hw_error_handle(struct sec_dev *sec)
+{
+ u32 err_sts;
+
+ /* read err sts */
+ err_sts = readl(sec->qm.io_base + SEC_CORE_INT_STATUS);
+ if (err_sts) {
+ sec_log_hw_error(sec, err_sts);
+
+ /* clear error interrupts */
+ writel(err_sts, sec->qm.io_base + SEC_CORE_INT_SOURCE);
+
+ return PCI_ERS_RESULT_NEED_RESET;
+ }
+
+ return PCI_ERS_RESULT_RECOVERED;
+}
+
+static pci_ers_result_t sec_process_hw_error(struct pci_dev *pdev)
+{
+ struct sec_dev *sec = pci_get_drvdata(pdev);
+ pci_ers_result_t qm_ret, sec_ret;
+
+ if (!sec) {
+ pci_err(pdev, "Can't recover error during device init\n");
+ return PCI_ERS_RESULT_NONE;
+ }
+
+ /* log qm error */
+ qm_ret = hisi_qm_hw_error_handle(&sec->qm);
+
+ /* log sec error */
+ sec_ret = sec_hw_error_handle(sec);
+
+ return (qm_ret == PCI_ERS_RESULT_NEED_RESET ||
+ sec_ret == PCI_ERS_RESULT_NEED_RESET) ?
+ PCI_ERS_RESULT_NEED_RESET : PCI_ERS_RESULT_RECOVERED;
+}
+
+static pci_ers_result_t sec_error_detected(struct pci_dev *pdev,
+ pci_channel_state_t state)
+{
+ if (pdev->is_virtfn)
+ return PCI_ERS_RESULT_NONE;
+
+ pci_info(pdev, "PCI error detected, state(=%d)!!\n", state);
+ if (state == pci_channel_io_perm_failure)
+ return PCI_ERS_RESULT_DISCONNECT;
+
+ return sec_process_hw_error(pdev);
+}
+
+static const struct pci_error_handlers sec_err_handler = {
+ .error_detected = sec_error_detected,
+};
+
+static struct pci_driver sec_pci_driver = {
+ .name = "hisi_sec2",
+ .id_table = sec_dev_ids,
+ .probe = sec_probe,
+ .remove = sec_remove,
+ .err_handler = &sec_err_handler,
+ .sriov_configure = sec_sriov_configure,
+};
+
+static void sec_register_debugfs(void)
+{
+ if (!debugfs_initialized())
+ return;
+
+ sec_debugfs_root = debugfs_create_dir("hisi_sec2", NULL);
+}
+
+static void sec_unregister_debugfs(void)
+{
+ debugfs_remove_recursive(sec_debugfs_root);
+}
+
+static int __init sec_init(void)
+{
+ int ret;
+
+ sec_register_debugfs();
+
+ ret = pci_register_driver(&sec_pci_driver);
+ if (ret < 0) {
+ sec_unregister_debugfs();
+ pr_err("Failed to register pci driver.\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void __exit sec_exit(void)
+{
+ pci_unregister_driver(&sec_pci_driver);
+ sec_unregister_debugfs();
+}
+
+module_init(sec_init);
+module_exit(sec_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Zaibo Xu <xuzaibo@huawei.com>");
+MODULE_AUTHOR("Longfang Liu <liulongfang@huawei.com>");
+MODULE_AUTHOR("Wei Zhang <zhangwei375@huawei.com>");
+MODULE_DESCRIPTION("Driver for HiSilicon SEC accelerator");