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Miller" , Joerg Roedel , Alex Williamson , Kenneth Lee , Hao Fang , Zhou Wang , Zaibo Xu , Philippe Ombredanne , Greg Kroah-Hartman , Thomas Gleixner , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-accelerators@lists.ozlabs.org, Lu Baolu , Sanjay Kumar Cc: linuxarm@huawei.com Subject: [PATCH 4/7] crypto: add hisilicon Queue Manager driver Date: Mon, 3 Sep 2018 08:52:01 +0800 Message-Id: <20180903005204.26041-5-nek.in.cn@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180903005204.26041-1-nek.in.cn@gmail.com> References: <20180903005204.26041-1-nek.in.cn@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kenneth Lee Hisilicon QM is a general IP used by some Hisilicon accelerators. It provides a general PCIE interface for the CPU and the accelerator to share a group of queues. This commit includes a library used by the accelerator driver to access the QM hardware. Signed-off-by: Kenneth Lee Signed-off-by: Zhou Wang Signed-off-by: Hao Fang --- drivers/crypto/Makefile | 2 +- drivers/crypto/hisilicon/Kconfig | 8 + drivers/crypto/hisilicon/Makefile | 1 + drivers/crypto/hisilicon/qm.c | 820 ++++++++++++++++++++++++++++++ drivers/crypto/hisilicon/qm.h | 110 ++++ 5 files changed, 940 insertions(+), 1 deletion(-) create mode 100644 drivers/crypto/hisilicon/qm.c create mode 100644 drivers/crypto/hisilicon/qm.h -- 2.17.1 diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile index c23396f32c8a..f3a7abe42424 100644 --- a/drivers/crypto/Makefile +++ b/drivers/crypto/Makefile @@ -46,4 +46,4 @@ obj-$(CONFIG_CRYPTO_DEV_VMX) += vmx/ obj-$(CONFIG_CRYPTO_DEV_BCM_SPU) += bcm/ obj-$(CONFIG_CRYPTO_DEV_SAFEXCEL) += inside-secure/ obj-$(CONFIG_CRYPTO_DEV_ARTPEC6) += axis/ -obj-y += hisilicon/ +obj-$(CONFIG_CRYPTO_DEV_HISILICON) += hisilicon/ diff --git a/drivers/crypto/hisilicon/Kconfig b/drivers/crypto/hisilicon/Kconfig index 8ca9c503bcb0..02a6eef84101 100644 --- a/drivers/crypto/hisilicon/Kconfig +++ b/drivers/crypto/hisilicon/Kconfig @@ -1,4 +1,8 @@ # SPDX-License-Identifier: GPL-2.0 +config CRYPTO_DEV_HISILICON + tristate "Support for HISILICON CRYPTO ACCELERATOR" + help + Enable this to use Hisilicon Hardware Accelerators config CRYPTO_DEV_HISI_SEC tristate "Support for Hisilicon SEC crypto block cipher accelerator" @@ -12,3 +16,7 @@ config CRYPTO_DEV_HISI_SEC To compile this as a module, choose M here: the module will be called hisi_sec. + +config CRYPTO_DEV_HISI_QM + tristate + depends on ARM64 && PCI diff --git a/drivers/crypto/hisilicon/Makefile b/drivers/crypto/hisilicon/Makefile index 463f46ace182..05e9052e0f52 100644 --- a/drivers/crypto/hisilicon/Makefile +++ b/drivers/crypto/hisilicon/Makefile @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_CRYPTO_DEV_HISI_SEC) += sec/ +obj-$(CONFIG_CRYPTO_DEV_HISI_QM) += qm.o diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c new file mode 100644 index 000000000000..ea618b4d0929 --- /dev/null +++ b/drivers/crypto/hisilicon/qm.c @@ -0,0 +1,820 @@ +// SPDX-License-Identifier: GPL-2.0+ +#include +#include +#include +#include +#include +#include +#include "qm.h" + +#define QM_DEF_Q_NUM 128 + +/* eq/aeq irq enable */ +#define QM_VF_AEQ_INT_SOURCE 0x0 +#define QM_VF_AEQ_INT_MASK 0x4 +#define QM_VF_EQ_INT_SOURCE 0x8 +#define QM_VF_EQ_INT_MASK 0xc + +/* mailbox */ +#define MAILBOX_CMD_SQC 0x0 +#define MAILBOX_CMD_CQC 0x1 +#define MAILBOX_CMD_EQC 0x2 +#define MAILBOX_CMD_SQC_BT 0x4 +#define MAILBOX_CMD_CQC_BT 0x5 + +#define MAILBOX_CMD_SEND_BASE 0x300 +#define MAILBOX_EVENT_SHIFT 8 +#define MAILBOX_STATUS_SHIFT 9 +#define MAILBOX_BUSY_SHIFT 13 +#define MAILBOX_OP_SHIFT 14 +#define MAILBOX_QUEUE_SHIFT 16 + +/* sqc shift */ +#define SQ_HEAD_SHIFT 0 +#define SQ_TAIL_SHIFI 16 +#define SQ_HOP_NUM_SHIFT 0 +#define SQ_PAGE_SIZE_SHIFT 4 +#define SQ_BUF_SIZE_SHIFT 8 +#define SQ_SQE_SIZE_SHIFT 12 +#define SQ_HEAD_IDX_SIG_SHIFT 0 +#define SQ_TAIL_IDX_SIG_SHIFT 0 +#define SQ_CQN_SHIFT 0 +#define SQ_PRIORITY_SHIFT 0 +#define SQ_ORDERS_SHIFT 4 +#define SQ_TYPE_SHIFT 8 + +#define SQ_TYPE_MASK 0xf + +/* cqc shift */ +#define CQ_HEAD_SHIFT 0 +#define CQ_TAIL_SHIFI 16 +#define CQ_HOP_NUM_SHIFT 0 +#define CQ_PAGE_SIZE_SHIFT 4 +#define CQ_BUF_SIZE_SHIFT 8 +#define CQ_SQE_SIZE_SHIFT 12 +#define CQ_PASID 0 +#define CQ_HEAD_IDX_SIG_SHIFT 0 +#define CQ_TAIL_IDX_SIG_SHIFT 0 +#define CQ_CQN_SHIFT 0 +#define CQ_PRIORITY_SHIFT 16 +#define CQ_ORDERS_SHIFT 0 +#define CQ_TYPE_SHIFT 0 +#define CQ_PHASE_SHIFT 0 +#define CQ_FLAG_SHIFT 1 + +#define CQC_HEAD_INDEX(cqc) ((cqc)->cq_head) +#define CQC_PHASE(cqc) (((cqc)->dw6) & 0x1) +#define CQC_CQ_ADDRESS(cqc) (((u64)((cqc)->cq_base_h) << 32) | \ + ((cqc)->cq_base_l)) +#define CQC_PHASE_BIT 0x1 + +/* eqc shift */ +#define MB_EQC_EQE_SHIFT 12 +#define MB_EQC_PHASE_SHIFT 16 + +#define EQC_HEAD_INDEX(eqc) ((eqc)->eq_head) +#define EQC_TAIL_INDEX(eqc) ((eqc)->eq_tail) +#define EQC_PHASE(eqc) ((((eqc)->dw6) >> 16) & 0x1) + +#define EQC_PHASE_BIT 0x00010000 + +/* cqe shift */ +#define CQE_PHASE(cqe) ((cqe)->w7 & 0x1) +#define CQE_SQ_NUM(cqe) ((cqe)->sq_num) +#define CQE_SQ_HEAD_INDEX(cqe) ((cqe)->sq_head) + +/* eqe shift */ +#define EQE_PHASE(eqe) (((eqe)->dw0 >> 16) & 0x1) +#define EQE_CQN(eqe) (((eqe)->dw0) & 0xffff) + +#define QM_EQE_CQN_MASK 0xffff + +/* doorbell */ +#define DOORBELL_CMD_SQ 0 +#define DOORBELL_CMD_CQ 1 +#define DOORBELL_CMD_EQ 2 +#define DOORBELL_CMD_AEQ 3 + +#define DOORBELL_CMD_SEND_BASE 0x340 + +#define QM_MEM_START_INIT 0x100040 +#define QM_MEM_INIT_DONE 0x100044 +#define QM_VFT_CFG_RDY 0x10006c +#define QM_VFT_CFG_OP_WR 0x100058 +#define QM_VFT_CFG_TYPE 0x10005c +#define QM_SQC_VFT 0x0 +#define QM_CQC_VFT 0x1 +#define QM_VFT_CFG_ADDRESS 0x100060 +#define QM_VFT_CFG_OP_ENABLE 0x100054 + +#define QM_VFT_CFG_DATA_L 0x100064 +#define QM_VFT_CFG_DATA_H 0x100068 +#define QM_SQC_VFT_BUF_SIZE (7ULL << 8) +#define QM_SQC_VFT_SQC_SIZE (5ULL << 12) +#define QM_SQC_VFT_INDEX_NUMBER (1ULL << 16) +#define QM_SQC_VFT_BT_INDEX_SHIFT 22 +#define QM_SQC_VFT_START_SQN_SHIFT 28 +#define QM_SQC_VFT_VALID (1ULL << 44) +#define QM_CQC_VFT_BUF_SIZE (7ULL << 8) +#define QM_CQC_VFT_SQC_SIZE (5ULL << 12) +#define QM_CQC_VFT_INDEX_NUMBER (1ULL << 16) +#define QM_CQC_VFT_BT_INDEX_SHIFT 22 +#define QM_CQC_VFT_VALID (1ULL << 28) + +struct cqe { + __le32 rsvd0; + __le16 cmd_id; + __le16 rsvd1; + __le16 sq_head; + __le16 sq_num; + __le16 rsvd2; + __le16 w7; +}; + +struct eqe { + __le32 dw0; +}; + +struct sqc { + __le16 head; + __le16 tail; + __le32 base_l; + __le32 base_h; + __le32 dw3; + __le16 qes; + __le16 rsvd0; + __le16 pasid; + __le16 w11; + __le16 cq_num; + __le16 w13; + __le32 rsvd1; +}; + +struct cqc { + __le16 head; + __le16 tail; + __le32 base_l; + __le32 base_h; + __le32 dw3; + __le16 qes; + __le16 rsvd0; + __le16 pasid; + __le16 w11; + __le32 dw6; + __le32 rsvd1; +}; + +#define INIT_QC(qc, base) do { \ + (qc)->head = 0; \ + (qc)->tail = 0; \ + (qc)->base_l = lower_32_bits(base); \ + (qc)->base_h = upper_32_bits(base); \ + (qc)->pasid = 0; \ + (qc)->w11 = 0; \ + (qc)->rsvd1 = 0; \ + (qc)->qes = QM_Q_DEPTH - 1; \ +} while (0) + +struct eqc { + __le16 head; + __le16 tail; + __le32 base_l; + __le32 base_h; + __le32 dw3; + __le32 rsvd[2]; + __le32 dw6; +}; + +struct mailbox { + __le16 w0; + __le16 queue_num; + __le32 base_l; + __le32 base_h; + __le32 rsvd; +}; + +struct doorbell { + __le16 queue_num; + __le16 cmd; + __le16 index; + __le16 priority; +}; + +#define QM_DMA_BUF(p, buf) ((struct buf *)(p)->buf.addr) +#define QM_SQC(p) QM_DMA_BUF(p, sqc) +#define QM_CQC(p) QM_DMA_BUF(p, cqc) +#define QM_EQC(p) QM_DMA_BUF(p, eqc) +#define QM_EQE(p) QM_DMA_BUF(p, eqe) + +#define QP_SQE_DMA(qp) ((qp)->scqe.dma) +#define QP_CQE(qp) ((struct cqe *)((qp)->scqe.addr + \ + qp->qm->sqe_size * QM_Q_DEPTH)) +#define QP_CQE_DMA(qp) ((qp)->scqe.dma + qp->qm->sqe_size * QM_Q_DEPTH) + +static inline void qm_writel(struct qm_info *qm, u32 val, u32 offset) +{ + writel(val, qm->io_base + offset); +} + +struct qm_info; + +struct hisi_acc_qm_hw_ops { + int (*vft_config)(struct qm_info *qm, u16 base, u32 number); +}; + +static inline int hacc_qm_mb_is_busy(struct qm_info *qm) +{ + u32 val; + + return readl_relaxed_poll_timeout(QM_ADDR(qm, MAILBOX_CMD_SEND_BASE), + val, !((val >> MAILBOX_BUSY_SHIFT) & 0x1), 10, 1000); +} + +static inline void qm_mb_write(struct qm_info *qm, void *src) +{ + void __iomem *fun_base = QM_ADDR(qm, MAILBOX_CMD_SEND_BASE); + unsigned long tmp0 = 0, tmp1 = 0; + + asm volatile("ldp %0, %1, %3\n" + "stp %0, %1, %2\n" + "dsb sy\n" + : "=&r" (tmp0), + "=&r" (tmp1), + "+Q" (*((char *)fun_base)) + : "Q" (*((char *)src)) + : "memory"); +} + +static int qm_mb(struct qm_info *qm, u8 cmd, dma_addr_t dma_addr, u16 queue, + bool op, bool event) +{ + struct mailbox mailbox; + int i = 0; + int ret = 0; + + memset(&mailbox, 0, sizeof(struct mailbox)); + + mailbox.w0 = cmd | + (event ? 0x1 << MAILBOX_EVENT_SHIFT : 0) | + (op ? 0x1 << MAILBOX_OP_SHIFT : 0) | + (0x1 << MAILBOX_BUSY_SHIFT); + mailbox.queue_num = queue; + mailbox.base_l = lower_32_bits(dma_addr); + mailbox.base_h = upper_32_bits(dma_addr); + mailbox.rsvd = 0; + + mutex_lock(&qm->mailbox_lock); + + while (hacc_qm_mb_is_busy(qm) && i < 10) + i++; + if (i >= 10) { + ret = -EBUSY; + dev_err(&qm->pdev->dev, "QM mail box is busy!"); + goto busy_unlock; + } + qm_mb_write(qm, &mailbox); + i = 0; + while (hacc_qm_mb_is_busy(qm) && i < 10) + i++; + if (i >= 10) { + ret = -EBUSY; + dev_err(&qm->pdev->dev, "QM mail box is still busy!"); + goto busy_unlock; + } + +busy_unlock: + mutex_unlock(&qm->mailbox_lock); + + return ret; +} + +static void qm_db(struct qm_info *qm, u16 qn, u8 cmd, u16 index, u8 priority) +{ + u64 doorbell = 0; + + doorbell = (u64)qn | ((u64)cmd << 16); + doorbell |= ((u64)index | ((u64)priority << 16)) << 32; + + writeq(doorbell, QM_ADDR(qm, DOORBELL_CMD_SEND_BASE)); +} + +/* @return 0 - cq/eq event, 1 - async event, 2 - abnormal error */ +static u32 qm_get_irq_source(struct qm_info *qm) +{ + return readl(QM_ADDR(qm, QM_VF_EQ_INT_SOURCE)); +} + +static inline struct hisi_qp *to_hisi_qp(struct qm_info *qm, struct eqe *eqe) +{ + u16 cqn = eqe->dw0 & QM_EQE_CQN_MASK; + struct hisi_qp *qp; + + read_lock(&qm->qps_lock); + qp = qm->qp_array[cqn]; + read_unlock(&qm->qps_lock); + + return qp; +} + +static inline void qm_cq_head_update(struct hisi_qp *qp) +{ + if (qp->qp_status.cq_head == QM_Q_DEPTH - 1) { + QM_CQC(qp)->dw6 = QM_CQC(qp)->dw6 ^ CQC_PHASE_BIT; + qp->qp_status.cq_head = 0; + } else { + qp->qp_status.cq_head++; + } +} + +static inline void qm_poll_qp(struct hisi_qp *qp, struct qm_info *qm) +{ + struct cqe *cqe; + + cqe = QP_CQE(qp) + qp->qp_status.cq_head; + + if (qp->req_cb) { + while (CQE_PHASE(cqe) == CQC_PHASE(QM_CQC(qp))) { + dma_rmb(); + qp->req_cb(qp, QP_SQE_ADDR(qp) + + qm->sqe_size * + CQE_SQ_HEAD_INDEX(cqe)); + qm_cq_head_update(qp); + cqe = QP_CQE(qp) + qp->qp_status.cq_head; + } + } else if (qp->event_cb) { + qp->event_cb(qp); + qm_cq_head_update(qp); + cqe = QP_CQE(qp) + qp->qp_status.cq_head; + } + + qm_db(qm, qp->queue_id, DOORBELL_CMD_CQ, qp->qp_status.cq_head, 0); + + /* set c_flag */ + qm_db(qm, qp->queue_id, DOORBELL_CMD_CQ, qp->qp_status.cq_head, 1); +} + +static irqreturn_t qm_irq_thread(int irq, void *data) +{ + struct qm_info *qm = data; + struct eqe *eqe = QM_EQE(qm) + qm->eq_head; + struct eqc *eqc = QM_EQC(qm); + struct hisi_qp *qp; + + while (EQE_PHASE(eqe) == EQC_PHASE(eqc)) { + qp = to_hisi_qp(qm, eqe); + if (qp) + qm_poll_qp(qp, qm); + + if (qm->eq_head == QM_Q_DEPTH - 1) { + eqc->dw6 = eqc->dw6 ^ EQC_PHASE_BIT; + eqe = QM_EQE(qm); + qm->eq_head = 0; + } else { + eqe++; + qm->eq_head++; + } + + qm_db(qm, 0, DOORBELL_CMD_EQ, qm->eq_head, 0); + } + + return IRQ_HANDLED; +} + +static void qm_init_qp_status(struct hisi_qp *qp) +{ + struct hisi_acc_qp_status *qp_status = &qp->qp_status; + + qp_status->sq_tail = 0; + qp_status->sq_head = 0; + qp_status->cq_head = 0; + qp_status->cqc_phase = 1; + qp_status->is_sq_full = 0; +} + +/* check if bit in regs is 1 */ +static inline int qm_acc_check(struct qm_info *qm, u32 offset, u32 bit) +{ + int val; + + return readl_relaxed_poll_timeout(QM_ADDR(qm, offset), val, + val & BIT(bit), 10, 1000); +} + +static inline int qm_init_q_buffer(struct device *dev, size_t size, + struct qm_dma_buffer *db) +{ + db->size = size; + db->addr = dma_zalloc_coherent(dev, size, &db->dma, GFP_KERNEL); + if (!db->addr) + return -ENOMEM; + + return 0; +} + +static inline void qm_uninit_q_buffer(struct device *dev, + struct qm_dma_buffer *db) +{ + dma_free_coherent(dev, db->size, db->addr, db->dma); +} + +static inline int qm_init_bt(struct qm_info *qm, struct device *dev, + size_t size, struct qm_dma_buffer *db, int mb_cmd) +{ + int ret; + + ret = qm_init_q_buffer(dev, size, db); + if (ret) + return -ENOMEM; + + ret = qm_mb(qm, mb_cmd, db->dma, 0, 0, 0); + if (ret) { + qm_uninit_q_buffer(dev, db); + return ret; + } + + return 0; +} + +/* the config should be conducted after hisi_acc_init_qm_mem() */ +static int qm_vft_common_config(struct qm_info *qm, u16 base, u32 number) +{ + u64 tmp; + int ret; + + ret = qm_acc_check(qm, QM_VFT_CFG_RDY, 0); + if (ret) + return ret; + qm_writel(qm, 0x0, QM_VFT_CFG_OP_WR); + qm_writel(qm, QM_SQC_VFT, QM_VFT_CFG_TYPE); + qm_writel(qm, qm->pdev->devfn, QM_VFT_CFG_ADDRESS); + + tmp = QM_SQC_VFT_BUF_SIZE | + QM_SQC_VFT_SQC_SIZE | + QM_SQC_VFT_INDEX_NUMBER | + QM_SQC_VFT_VALID | + (u64)base << QM_SQC_VFT_START_SQN_SHIFT; + + qm_writel(qm, tmp & 0xffffffff, QM_VFT_CFG_DATA_L); + qm_writel(qm, tmp >> 32, QM_VFT_CFG_DATA_H); + + qm_writel(qm, 0x0, QM_VFT_CFG_RDY); + qm_writel(qm, 0x1, QM_VFT_CFG_OP_ENABLE); + ret = qm_acc_check(qm, QM_VFT_CFG_RDY, 0); + if (ret) + return ret; + tmp = 0; + + qm_writel(qm, 0x0, QM_VFT_CFG_OP_WR); + qm_writel(qm, QM_CQC_VFT, QM_VFT_CFG_TYPE); + qm_writel(qm, qm->pdev->devfn, QM_VFT_CFG_ADDRESS); + + tmp = QM_CQC_VFT_BUF_SIZE | + QM_CQC_VFT_SQC_SIZE | + QM_CQC_VFT_INDEX_NUMBER | + QM_CQC_VFT_VALID; + + qm_writel(qm, tmp & 0xffffffff, QM_VFT_CFG_DATA_L); + qm_writel(qm, tmp >> 32, QM_VFT_CFG_DATA_H); + + qm_writel(qm, 0x0, QM_VFT_CFG_RDY); + qm_writel(qm, 0x1, QM_VFT_CFG_OP_ENABLE); + ret = qm_acc_check(qm, QM_VFT_CFG_RDY, 0); + if (ret) + return ret; + return 0; +} + +static struct hisi_acc_qm_hw_ops qm_hw_ops_v1 = { + .vft_config = qm_vft_common_config, +}; + +struct hisi_qp *hisi_qm_create_qp(struct qm_info *qm, u8 alg_type) +{ + struct hisi_qp *qp; + int qp_index; + int ret; + + write_lock(&qm->qps_lock); + qp_index = find_first_zero_bit(qm->qp_bitmap, qm->qp_num); + if (qp_index >= qm->qp_num) { + write_unlock(&qm->qps_lock); + return ERR_PTR(-EBUSY); + } + set_bit(qp_index, qm->qp_bitmap); + + qp = kzalloc(sizeof(*qp), GFP_KERNEL); + if (!qp) { + ret = -ENOMEM; + write_unlock(&qm->qps_lock); + goto err_with_bitset; + } + + qp->queue_id = qp_index; + qp->qm = qm; + qp->alg_type = alg_type; + qm_init_qp_status(qp); + + write_unlock(&qm->qps_lock); + return qp; + +err_with_bitset: + clear_bit(qp_index, qm->qp_bitmap); + + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(hisi_qm_create_qp); + +int hisi_qm_start_qp(struct hisi_qp *qp, unsigned long arg) +{ + struct qm_info *qm = qp->qm; + struct device *dev = &qm->pdev->dev; + struct sqc *sqc; + struct cqc *cqc; + int qp_index = qp->queue_id; + int pasid = arg; + int ret; + + /* set sq and cq context */ + qp->sqc.addr = QM_SQC(qm) + qp_index; + qp->sqc.dma = qm->sqc.dma + qp_index * sizeof(struct sqc); + sqc = QM_SQC(qp); + + qp->cqc.addr = QM_CQC(qm) + qp_index; + qp->cqc.dma = qm->cqc.dma + qp_index * sizeof(struct cqc); + cqc = QM_CQC(qp); + + /* allocate sq and cq */ + ret = qm_init_q_buffer(dev, + qm->sqe_size * QM_Q_DEPTH + sizeof(struct cqe) * QM_Q_DEPTH, + &qp->scqe); + if (ret) + return ret; + + INIT_QC(sqc, qp->scqe.dma); + sqc->pasid = pasid; + sqc->dw3 = (0 << SQ_HOP_NUM_SHIFT) | + (0 << SQ_PAGE_SIZE_SHIFT) | + (0 << SQ_BUF_SIZE_SHIFT) | + (ilog2(qm->sqe_size) << SQ_SQE_SIZE_SHIFT); + sqc->cq_num = qp_index; + sqc->w13 = 0 << SQ_PRIORITY_SHIFT | + 1 << SQ_ORDERS_SHIFT | + (qp->alg_type & SQ_TYPE_MASK) << SQ_TYPE_SHIFT; + + ret = qm_mb(qm, MAILBOX_CMD_SQC, qp->sqc.dma, qp_index, 0, 0); + if (ret) + return ret; + + INIT_QC(cqc, qp->scqe.dma + qm->sqe_size * QM_Q_DEPTH); + cqc->dw3 = (0 << CQ_HOP_NUM_SHIFT) | + (0 << CQ_PAGE_SIZE_SHIFT) | + (0 << CQ_BUF_SIZE_SHIFT) | + (4 << CQ_SQE_SIZE_SHIFT); + cqc->dw6 = 1 << CQ_PHASE_SHIFT | 1 << CQ_FLAG_SHIFT; + + ret = qm_mb(qm, MAILBOX_CMD_CQC, qp->cqc.dma, qp_index, 0, 0); + if (ret) + return ret; + + write_lock(&qm->qps_lock); + qm->qp_array[qp_index] = qp; + init_completion(&qp->completion); + write_unlock(&qm->qps_lock); + + return qp_index; +} +EXPORT_SYMBOL_GPL(hisi_qm_start_qp); + +void hisi_qm_release_qp(struct hisi_qp *qp) +{ + struct qm_info *qm = qp->qm; + struct device *dev = &qm->pdev->dev; + + write_lock(&qm->qps_lock); + qm->qp_array[qp->queue_id] = NULL; + bitmap_clear(qm->qp_bitmap, qp->queue_id, 1); + write_unlock(&qm->qps_lock); + + qm_uninit_q_buffer(dev, &qp->scqe); + kfree(qp); +} +EXPORT_SYMBOL_GPL(hisi_qm_release_qp); + +static void *qm_get_avail_sqe(struct hisi_qp *qp) +{ + struct hisi_acc_qp_status *qp_status = &qp->qp_status; + void *sq_base = QP_SQE_ADDR(qp); + u16 sq_tail = qp_status->sq_tail; + + if (qp_status->is_sq_full == 1) + return NULL; + + return sq_base + sq_tail * qp->qm->sqe_size; +} + +int hisi_qp_send(struct hisi_qp *qp, void *msg) +{ + struct hisi_acc_qp_status *qp_status = &qp->qp_status; + u16 sq_tail = qp_status->sq_tail; + u16 sq_tail_next = (sq_tail + 1) % QM_Q_DEPTH; + unsigned long timeout = 100; + void *sqe = qm_get_avail_sqe(qp); + + if (!sqe) + return -ENOSPC; + + memcpy(sqe, msg, qp->qm->sqe_size); + + qm_db(qp->qm, qp->queue_id, DOORBELL_CMD_SQ, sq_tail_next, 0); + + qp_status->sq_tail = sq_tail_next; + + if (qp_status->sq_tail == qp_status->sq_head) + qp_status->is_sq_full = 1; + + /* wait until job finished */ + wait_for_completion_timeout(&qp->completion, timeout); + + return 0; +} +EXPORT_SYMBOL_GPL(hisi_qp_send); + +int hisi_qm_init(const char *dev_name, struct qm_info *qm) +{ + struct pci_dev *pdev = qm->pdev; + int ret; + + ret = pci_enable_device_mem(pdev); + if (ret < 0) { + dev_err(&pdev->dev, "Can't enable device mem!\n"); + return ret; + } + + ret = pci_request_mem_regions(pdev, dev_name); + if (ret < 0) { + dev_err(&pdev->dev, "Can't request mem regions!\n"); + goto err_with_pcidev; + } + + qm->dev_name = dev_name; + qm->phys_base = pci_resource_start(pdev, 2); + qm->size = pci_resource_len(qm->pdev, 2); + qm->io_base = devm_ioremap(&pdev->dev, qm->phys_base, qm->size); + if (!qm->io_base) { + ret = -EIO; + goto err_with_mem_regions; + } + + dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + pci_set_master(pdev); + + ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI); + if (ret < 0) { + dev_err(&pdev->dev, "Enable MSI vectors fail!\n"); + goto err_with_mem_regions; + } + + qm->eq_head = 0; + mutex_init(&qm->mailbox_lock); + rwlock_init(&qm->qps_lock); + + if (qm->ver) + qm->ops = &qm_hw_ops_v1; + + return 0; + +err_with_mem_regions: + pci_release_mem_regions(pdev); +err_with_pcidev: + pci_disable_device(pdev); + + return ret; +} +EXPORT_SYMBOL_GPL(hisi_qm_init); + +void hisi_qm_uninit(struct qm_info *qm) +{ + struct pci_dev *pdev = qm->pdev; + + pci_free_irq_vectors(pdev); + pci_release_mem_regions(pdev); + pci_disable_device(pdev); +} +EXPORT_SYMBOL_GPL(hisi_qm_uninit); + +static irqreturn_t qm_irq(int irq, void *data) +{ + struct qm_info *qm = data; + u32 int_source; + + int_source = qm_get_irq_source(qm); + if (int_source) + return IRQ_WAKE_THREAD; + + dev_err(&qm->pdev->dev, "invalid int source %d\n", int_source); + + return IRQ_HANDLED; +} + +int hisi_qm_start(struct qm_info *qm) +{ + struct pci_dev *pdev = qm->pdev; + struct device *dev = &pdev->dev; + int ret; + + if (qm->pdev->is_physfn) + qm->ops->vft_config(qm, qm->qp_base, qm->qp_num); + + ret = qm_init_q_buffer(dev, sizeof(struct eqc), &qm->eqc); + if (ret) + goto err_out; + + ret = qm_init_q_buffer(dev, sizeof(struct eqe) * QM_Q_DEPTH, &qm->eqe); + if (ret) + goto err_with_eqc; + + QM_EQC(qm)->base_l = lower_32_bits(qm->eqe.dma); + QM_EQC(qm)->base_h = upper_32_bits(qm->eqe.dma); + QM_EQC(qm)->dw3 = 2 << MB_EQC_EQE_SHIFT; + QM_EQC(qm)->dw6 = (QM_Q_DEPTH - 1) | (1 << MB_EQC_PHASE_SHIFT); + ret = qm_mb(qm, MAILBOX_CMD_EQC, qm->eqc.dma, 0, 0, 0); + if (ret) + goto err_with_eqe; + + qm->qp_bitmap = kcalloc(BITS_TO_LONGS(qm->qp_num), sizeof(long), + GFP_KERNEL); + if (!qm->qp_bitmap) + goto err_with_eqe; + + qm->qp_array = kcalloc(qm->qp_num, sizeof(struct hisi_qp *), + GFP_KERNEL); + if (!qm->qp_array) + goto err_with_bitmap; + + /* Init sqc_bt */ + ret = qm_init_bt(qm, dev, sizeof(struct sqc) * qm->qp_num, &qm->sqc, + MAILBOX_CMD_SQC_BT); + if (ret) + goto err_with_qp_array; + + /* Init cqc_bt */ + ret = qm_init_bt(qm, dev, sizeof(struct cqc) * qm->qp_num, &qm->cqc, + MAILBOX_CMD_CQC_BT); + if (ret) + goto err_with_sqc; + + ret = request_threaded_irq(pci_irq_vector(pdev, 0), qm_irq, + qm_irq_thread, IRQF_SHARED, qm->dev_name, + qm); + if (ret) + goto err_with_cqc; + + writel(0x0, QM_ADDR(qm, QM_VF_EQ_INT_MASK)); + + return 0; + +err_with_cqc: + qm_uninit_q_buffer(dev, &qm->cqc); +err_with_sqc: + qm_uninit_q_buffer(dev, &qm->sqc); +err_with_qp_array: + kfree(qm->qp_array); +err_with_bitmap: + kfree(qm->qp_bitmap); +err_with_eqe: + qm_uninit_q_buffer(dev, &qm->eqe); +err_with_eqc: + qm_uninit_q_buffer(dev, &qm->eqc); +err_out: + return ret; +} +EXPORT_SYMBOL_GPL(hisi_qm_start); + +void hisi_qm_stop(struct qm_info *qm) +{ + struct pci_dev *pdev = qm->pdev; + struct device *dev = &pdev->dev; + + free_irq(pci_irq_vector(pdev, 0), qm); + qm_uninit_q_buffer(dev, &qm->cqc); + kfree(qm->qp_array); + kfree(qm->qp_bitmap); + qm_uninit_q_buffer(dev, &qm->eqe); + qm_uninit_q_buffer(dev, &qm->eqc); +} +EXPORT_SYMBOL_GPL(hisi_qm_stop); + +/* put qm into init state, so the acce config become available */ +int hisi_qm_mem_start(struct qm_info *qm) +{ + u32 val; + + qm_writel(qm, 0x1, QM_MEM_START_INIT); + return readl_relaxed_poll_timeout(QM_ADDR(qm, QM_MEM_INIT_DONE), val, + val & BIT(0), 10, 1000); +} +EXPORT_SYMBOL_GPL(hisi_qm_mem_start); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Zhou Wang "); +MODULE_DESCRIPTION("HiSilicon Accelerator queue manager driver"); diff --git a/drivers/crypto/hisilicon/qm.h b/drivers/crypto/hisilicon/qm.h new file mode 100644 index 000000000000..0e81182ac6a8 --- /dev/null +++ b/drivers/crypto/hisilicon/qm.h @@ -0,0 +1,110 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +#ifndef HISI_ACC_QM_H +#define HISI_ACC_QM_H + +#include +#include +#include +#include +#include + +#define QM_CQE_SIZE 16 +/* default queue depth for sq/cq/eq */ +#define QM_Q_DEPTH 1024 + +/* qm user domain */ +#define QM_ARUSER_M_CFG_1 0x100088 +#define QM_ARUSER_M_CFG_ENABLE 0x100090 +#define QM_AWUSER_M_CFG_1 0x100098 +#define QM_AWUSER_M_CFG_ENABLE 0x1000a0 +#define QM_WUSER_M_CFG_ENABLE 0x1000a8 + +/* qm cache */ +#define QM_CACHE_CTL 0x100050 +#define QM_AXI_M_CFG 0x1000ac +#define QM_AXI_M_CFG_ENABLE 0x1000b0 +#define QM_PEH_AXUSER_CFG 0x1000cc +#define QM_PEH_AXUSER_CFG_ENABLE 0x1000d0 + +#define QP_SQE_ADDR(qp) ((qp)->scqe.addr) + +struct qm_dma_buffer { + int size; + void *addr; + dma_addr_t dma; +}; + +struct qm_info { + int ver; + const char *dev_name; + struct pci_dev *pdev; + + resource_size_t phys_base; + resource_size_t size; + void __iomem *io_base; + + u32 sqe_size; + u32 qp_base; + u32 qp_num; + + struct qm_dma_buffer sqc, cqc, eqc, eqe; + + u32 eq_head; + + rwlock_t qps_lock; + unsigned long *qp_bitmap; + struct hisi_qp **qp_array; + + struct mutex mailbox_lock; + + struct hisi_acc_qm_hw_ops *ops; + +}; +#define QM_ADDR(qm, off) ((qm)->io_base + off) + +struct hisi_acc_qp_status { + u16 sq_tail; + u16 sq_head; + u16 cq_head; + bool cqc_phase; + int is_sq_full; +}; + +struct hisi_qp; + +struct hisi_qp_ops { + int (*fill_sqe)(void *sqe, void *q_parm, void *d_parm); +}; + +struct hisi_qp { + /* sq number in this function */ + u32 queue_id; + u8 alg_type; + u8 req_type; + + struct qm_dma_buffer sqc, cqc; + struct qm_dma_buffer scqe; + + struct hisi_acc_qp_status qp_status; + + struct qm_info *qm; + + /* for crypto sync API */ + struct completion completion; + + struct hisi_qp_ops *hw_ops; + void *qp_ctx; + void (*event_cb)(struct hisi_qp *qp); + void (*req_cb)(struct hisi_qp *qp, void *data); +}; + +extern int hisi_qm_init(const char *dev_name, struct qm_info *qm); +extern void hisi_qm_uninit(struct qm_info *qm); +extern int hisi_qm_start(struct qm_info *qm); +extern void hisi_qm_stop(struct qm_info *qm); +extern int hisi_qm_mem_start(struct qm_info *qm); +extern struct hisi_qp *hisi_qm_create_qp(struct qm_info *qm, u8 alg_type); +extern int hisi_qm_start_qp(struct hisi_qp *qp, unsigned long arg); +extern void hisi_qm_release_qp(struct hisi_qp *qp); +extern int hisi_qp_send(struct hisi_qp *qp, void *msg); +#endif