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path: root/drivers/crypto/hisilicon/qm.c
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-rw-r--r--drivers/crypto/hisilicon/qm.c5584
1 files changed, 5584 insertions, 0 deletions
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
new file mode 100644
index 000000000..5539be1bf
--- /dev/null
+++ b/drivers/crypto/hisilicon/qm.c
@@ -0,0 +1,5584 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2019 HiSilicon Limited. */
+#include <asm/page.h>
+#include <linux/acpi.h>
+#include <linux/aer.h>
+#include <linux/bitmap.h>
+#include <linux/dma-mapping.h>
+#include <linux/idr.h>
+#include <linux/io.h>
+#include <linux/irqreturn.h>
+#include <linux/log2.h>
+#include <linux/pm_runtime.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/uacce.h>
+#include <linux/uaccess.h>
+#include <uapi/misc/uacce/hisi_qm.h>
+#include <linux/hisi_acc_qm.h>
+#include "qm_common.h"
+
+/* 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
+
+#define QM_IRQ_VECTOR_MASK GENMASK(15, 0)
+#define QM_IRQ_TYPE_MASK GENMASK(15, 0)
+#define QM_IRQ_TYPE_SHIFT 16
+#define QM_ABN_IRQ_TYPE_MASK GENMASK(7, 0)
+
+/* mailbox */
+#define QM_MB_PING_ALL_VFS 0xffff
+#define QM_MB_CMD_DATA_SHIFT 32
+#define QM_MB_CMD_DATA_MASK GENMASK(31, 0)
+#define QM_MB_STATUS_MASK GENMASK(12, 9)
+
+/* sqc shift */
+#define QM_SQ_HOP_NUM_SHIFT 0
+#define QM_SQ_PAGE_SIZE_SHIFT 4
+#define QM_SQ_BUF_SIZE_SHIFT 8
+#define QM_SQ_SQE_SIZE_SHIFT 12
+#define QM_SQ_PRIORITY_SHIFT 0
+#define QM_SQ_ORDERS_SHIFT 4
+#define QM_SQ_TYPE_SHIFT 8
+#define QM_QC_PASID_ENABLE 0x1
+#define QM_QC_PASID_ENABLE_SHIFT 7
+
+#define QM_SQ_TYPE_MASK GENMASK(3, 0)
+#define QM_SQ_TAIL_IDX(sqc) ((le16_to_cpu((sqc)->w11) >> 6) & 0x1)
+
+/* cqc shift */
+#define QM_CQ_HOP_NUM_SHIFT 0
+#define QM_CQ_PAGE_SIZE_SHIFT 4
+#define QM_CQ_BUF_SIZE_SHIFT 8
+#define QM_CQ_CQE_SIZE_SHIFT 12
+#define QM_CQ_PHASE_SHIFT 0
+#define QM_CQ_FLAG_SHIFT 1
+
+#define QM_CQE_PHASE(cqe) (le16_to_cpu((cqe)->w7) & 0x1)
+#define QM_QC_CQE_SIZE 4
+#define QM_CQ_TAIL_IDX(cqc) ((le16_to_cpu((cqc)->w11) >> 6) & 0x1)
+
+/* eqc shift */
+#define QM_EQE_AEQE_SIZE (2UL << 12)
+#define QM_EQC_PHASE_SHIFT 16
+
+#define QM_EQE_PHASE(eqe) ((le32_to_cpu((eqe)->dw0) >> 16) & 0x1)
+#define QM_EQE_CQN_MASK GENMASK(15, 0)
+
+#define QM_AEQE_PHASE(aeqe) ((le32_to_cpu((aeqe)->dw0) >> 16) & 0x1)
+#define QM_AEQE_TYPE_SHIFT 17
+#define QM_AEQE_CQN_MASK GENMASK(15, 0)
+#define QM_CQ_OVERFLOW 0
+#define QM_EQ_OVERFLOW 1
+#define QM_CQE_ERROR 2
+
+#define QM_XQ_DEPTH_SHIFT 16
+#define QM_XQ_DEPTH_MASK GENMASK(15, 0)
+
+#define QM_DOORBELL_CMD_SQ 0
+#define QM_DOORBELL_CMD_CQ 1
+#define QM_DOORBELL_CMD_EQ 2
+#define QM_DOORBELL_CMD_AEQ 3
+
+#define QM_DOORBELL_BASE_V1 0x340
+#define QM_DB_CMD_SHIFT_V1 16
+#define QM_DB_INDEX_SHIFT_V1 32
+#define QM_DB_PRIORITY_SHIFT_V1 48
+#define QM_PAGE_SIZE 0x0034
+#define QM_QP_DB_INTERVAL 0x10000
+
+#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 0x100060
+#define QM_VFT_CFG_OP_ENABLE 0x100054
+#define QM_PM_CTRL 0x100148
+#define QM_IDLE_DISABLE BIT(9)
+
+#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_START_SQN_SHIFT 28
+#define QM_SQC_VFT_VALID (1ULL << 44)
+#define QM_SQC_VFT_SQN_SHIFT 45
+#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_VALID (1ULL << 28)
+
+#define QM_SQC_VFT_BASE_SHIFT_V2 28
+#define QM_SQC_VFT_BASE_MASK_V2 GENMASK(15, 0)
+#define QM_SQC_VFT_NUM_SHIFT_V2 45
+#define QM_SQC_VFT_NUM_MASK_v2 GENMASK(9, 0)
+
+#define QM_ABNORMAL_INT_SOURCE 0x100000
+#define QM_ABNORMAL_INT_MASK 0x100004
+#define QM_ABNORMAL_INT_MASK_VALUE 0x7fff
+#define QM_ABNORMAL_INT_STATUS 0x100008
+#define QM_ABNORMAL_INT_SET 0x10000c
+#define QM_ABNORMAL_INF00 0x100010
+#define QM_FIFO_OVERFLOW_TYPE 0xc0
+#define QM_FIFO_OVERFLOW_TYPE_SHIFT 6
+#define QM_FIFO_OVERFLOW_VF 0x3f
+#define QM_ABNORMAL_INF01 0x100014
+#define QM_DB_TIMEOUT_TYPE 0xc0
+#define QM_DB_TIMEOUT_TYPE_SHIFT 6
+#define QM_DB_TIMEOUT_VF 0x3f
+#define QM_RAS_CE_ENABLE 0x1000ec
+#define QM_RAS_FE_ENABLE 0x1000f0
+#define QM_RAS_NFE_ENABLE 0x1000f4
+#define QM_RAS_CE_THRESHOLD 0x1000f8
+#define QM_RAS_CE_TIMES_PER_IRQ 1
+#define QM_OOO_SHUTDOWN_SEL 0x1040f8
+#define QM_ECC_MBIT BIT(2)
+#define QM_DB_TIMEOUT BIT(10)
+#define QM_OF_FIFO_OF BIT(11)
+
+#define QM_RESET_WAIT_TIMEOUT 400
+#define QM_PEH_VENDOR_ID 0x1000d8
+#define ACC_VENDOR_ID_VALUE 0x5a5a
+#define QM_PEH_DFX_INFO0 0x1000fc
+#define QM_PEH_DFX_INFO1 0x100100
+#define QM_PEH_DFX_MASK (BIT(0) | BIT(2))
+#define QM_PEH_MSI_FINISH_MASK GENMASK(19, 16)
+#define ACC_PEH_SRIOV_CTRL_VF_MSE_SHIFT 3
+#define ACC_PEH_MSI_DISABLE GENMASK(31, 0)
+#define ACC_MASTER_GLOBAL_CTRL_SHUTDOWN 0x1
+#define ACC_MASTER_TRANS_RETURN_RW 3
+#define ACC_MASTER_TRANS_RETURN 0x300150
+#define ACC_MASTER_GLOBAL_CTRL 0x300000
+#define ACC_AM_CFG_PORT_WR_EN 0x30001c
+#define QM_RAS_NFE_MBIT_DISABLE ~QM_ECC_MBIT
+#define ACC_AM_ROB_ECC_INT_STS 0x300104
+#define ACC_ROB_ECC_ERR_MULTPL BIT(1)
+#define QM_MSI_CAP_ENABLE BIT(16)
+
+/* interfunction communication */
+#define QM_IFC_READY_STATUS 0x100128
+#define QM_IFC_C_STS_M 0x10012C
+#define QM_IFC_INT_SET_P 0x100130
+#define QM_IFC_INT_CFG 0x100134
+#define QM_IFC_INT_SOURCE_P 0x100138
+#define QM_IFC_INT_SOURCE_V 0x0020
+#define QM_IFC_INT_MASK 0x0024
+#define QM_IFC_INT_STATUS 0x0028
+#define QM_IFC_INT_SET_V 0x002C
+#define QM_IFC_SEND_ALL_VFS GENMASK(6, 0)
+#define QM_IFC_INT_SOURCE_CLR GENMASK(63, 0)
+#define QM_IFC_INT_SOURCE_MASK BIT(0)
+#define QM_IFC_INT_DISABLE BIT(0)
+#define QM_IFC_INT_STATUS_MASK BIT(0)
+#define QM_IFC_INT_SET_MASK BIT(0)
+#define QM_WAIT_DST_ACK 10
+#define QM_MAX_PF_WAIT_COUNT 10
+#define QM_MAX_VF_WAIT_COUNT 40
+#define QM_VF_RESET_WAIT_US 20000
+#define QM_VF_RESET_WAIT_CNT 3000
+#define QM_VF_RESET_WAIT_TIMEOUT_US \
+ (QM_VF_RESET_WAIT_US * QM_VF_RESET_WAIT_CNT)
+
+#define POLL_PERIOD 10
+#define POLL_TIMEOUT 1000
+#define WAIT_PERIOD_US_MAX 200
+#define WAIT_PERIOD_US_MIN 100
+#define MAX_WAIT_COUNTS 1000
+#define QM_CACHE_WB_START 0x204
+#define QM_CACHE_WB_DONE 0x208
+#define QM_FUNC_CAPS_REG 0x3100
+#define QM_CAPBILITY_VERSION GENMASK(7, 0)
+
+#define PCI_BAR_2 2
+#define PCI_BAR_4 4
+#define QM_SQE_DATA_ALIGN_MASK GENMASK(6, 0)
+#define QMC_ALIGN(sz) ALIGN(sz, 32)
+
+#define QM_DBG_READ_LEN 256
+#define QM_PCI_COMMAND_INVALID ~0
+#define QM_RESET_STOP_TX_OFFSET 1
+#define QM_RESET_STOP_RX_OFFSET 2
+
+#define WAIT_PERIOD 20
+#define REMOVE_WAIT_DELAY 10
+
+#define QM_QOS_PARAM_NUM 2
+#define QM_QOS_VAL_NUM 1
+#define QM_QOS_BDF_PARAM_NUM 4
+#define QM_QOS_MAX_VAL 1000
+#define QM_QOS_RATE 100
+#define QM_QOS_EXPAND_RATE 1000
+#define QM_SHAPER_CIR_B_MASK GENMASK(7, 0)
+#define QM_SHAPER_CIR_U_MASK GENMASK(10, 8)
+#define QM_SHAPER_CIR_S_MASK GENMASK(14, 11)
+#define QM_SHAPER_FACTOR_CIR_U_SHIFT 8
+#define QM_SHAPER_FACTOR_CIR_S_SHIFT 11
+#define QM_SHAPER_FACTOR_CBS_B_SHIFT 15
+#define QM_SHAPER_FACTOR_CBS_S_SHIFT 19
+#define QM_SHAPER_CBS_B 1
+#define QM_SHAPER_CBS_S 16
+#define QM_SHAPER_VFT_OFFSET 6
+#define WAIT_FOR_QOS_VF 100
+#define QM_QOS_MIN_ERROR_RATE 5
+#define QM_QOS_TYPICAL_NUM 8
+#define QM_SHAPER_MIN_CBS_S 8
+#define QM_QOS_TICK 0x300U
+#define QM_QOS_DIVISOR_CLK 0x1f40U
+#define QM_QOS_MAX_CIR_B 200
+#define QM_QOS_MIN_CIR_B 100
+#define QM_QOS_MAX_CIR_U 6
+#define QM_QOS_MAX_CIR_S 11
+#define QM_AUTOSUSPEND_DELAY 3000
+
+#define QM_DEV_ALG_MAX_LEN 256
+
+#define QM_MK_CQC_DW3_V1(hop_num, pg_sz, buf_sz, cqe_sz) \
+ (((hop_num) << QM_CQ_HOP_NUM_SHIFT) | \
+ ((pg_sz) << QM_CQ_PAGE_SIZE_SHIFT) | \
+ ((buf_sz) << QM_CQ_BUF_SIZE_SHIFT) | \
+ ((cqe_sz) << QM_CQ_CQE_SIZE_SHIFT))
+
+#define QM_MK_CQC_DW3_V2(cqe_sz, cq_depth) \
+ ((((u32)cq_depth) - 1) | ((cqe_sz) << QM_CQ_CQE_SIZE_SHIFT))
+
+#define QM_MK_SQC_W13(priority, orders, alg_type) \
+ (((priority) << QM_SQ_PRIORITY_SHIFT) | \
+ ((orders) << QM_SQ_ORDERS_SHIFT) | \
+ (((alg_type) & QM_SQ_TYPE_MASK) << QM_SQ_TYPE_SHIFT))
+
+#define QM_MK_SQC_DW3_V1(hop_num, pg_sz, buf_sz, sqe_sz) \
+ (((hop_num) << QM_SQ_HOP_NUM_SHIFT) | \
+ ((pg_sz) << QM_SQ_PAGE_SIZE_SHIFT) | \
+ ((buf_sz) << QM_SQ_BUF_SIZE_SHIFT) | \
+ ((u32)ilog2(sqe_sz) << QM_SQ_SQE_SIZE_SHIFT))
+
+#define QM_MK_SQC_DW3_V2(sqe_sz, sq_depth) \
+ ((((u32)sq_depth) - 1) | ((u32)ilog2(sqe_sz) << QM_SQ_SQE_SIZE_SHIFT))
+
+#define INIT_QC_COMMON(qc, base, pasid) do { \
+ (qc)->head = 0; \
+ (qc)->tail = 0; \
+ (qc)->base_l = cpu_to_le32(lower_32_bits(base)); \
+ (qc)->base_h = cpu_to_le32(upper_32_bits(base)); \
+ (qc)->dw3 = 0; \
+ (qc)->w8 = 0; \
+ (qc)->rsvd0 = 0; \
+ (qc)->pasid = cpu_to_le16(pasid); \
+ (qc)->w11 = 0; \
+ (qc)->rsvd1 = 0; \
+} while (0)
+
+enum vft_type {
+ SQC_VFT = 0,
+ CQC_VFT,
+ SHAPER_VFT,
+};
+
+enum acc_err_result {
+ ACC_ERR_NONE,
+ ACC_ERR_NEED_RESET,
+ ACC_ERR_RECOVERED,
+};
+
+enum qm_alg_type {
+ ALG_TYPE_0,
+ ALG_TYPE_1,
+};
+
+enum qm_mb_cmd {
+ QM_PF_FLR_PREPARE = 0x01,
+ QM_PF_SRST_PREPARE,
+ QM_PF_RESET_DONE,
+ QM_VF_PREPARE_DONE,
+ QM_VF_PREPARE_FAIL,
+ QM_VF_START_DONE,
+ QM_VF_START_FAIL,
+ QM_PF_SET_QOS,
+ QM_VF_GET_QOS,
+};
+
+enum qm_basic_type {
+ QM_TOTAL_QP_NUM_CAP = 0x0,
+ QM_FUNC_MAX_QP_CAP,
+ QM_XEQ_DEPTH_CAP,
+ QM_QP_DEPTH_CAP,
+ QM_EQ_IRQ_TYPE_CAP,
+ QM_AEQ_IRQ_TYPE_CAP,
+ QM_ABN_IRQ_TYPE_CAP,
+ QM_PF2VF_IRQ_TYPE_CAP,
+ QM_PF_IRQ_NUM_CAP,
+ QM_VF_IRQ_NUM_CAP,
+};
+
+enum qm_pre_store_cap_idx {
+ QM_EQ_IRQ_TYPE_CAP_IDX = 0x0,
+ QM_AEQ_IRQ_TYPE_CAP_IDX,
+ QM_ABN_IRQ_TYPE_CAP_IDX,
+ QM_PF2VF_IRQ_TYPE_CAP_IDX,
+};
+
+static const struct hisi_qm_cap_info qm_cap_info_comm[] = {
+ {QM_SUPPORT_DB_ISOLATION, 0x30, 0, BIT(0), 0x0, 0x0, 0x0},
+ {QM_SUPPORT_FUNC_QOS, 0x3100, 0, BIT(8), 0x0, 0x0, 0x1},
+ {QM_SUPPORT_STOP_QP, 0x3100, 0, BIT(9), 0x0, 0x0, 0x1},
+ {QM_SUPPORT_MB_COMMAND, 0x3100, 0, BIT(11), 0x0, 0x0, 0x1},
+ {QM_SUPPORT_SVA_PREFETCH, 0x3100, 0, BIT(14), 0x0, 0x0, 0x1},
+};
+
+static const struct hisi_qm_cap_info qm_cap_info_pf[] = {
+ {QM_SUPPORT_RPM, 0x3100, 0, BIT(13), 0x0, 0x0, 0x1},
+};
+
+static const struct hisi_qm_cap_info qm_cap_info_vf[] = {
+ {QM_SUPPORT_RPM, 0x3100, 0, BIT(12), 0x0, 0x0, 0x0},
+};
+
+static const struct hisi_qm_cap_info qm_basic_info[] = {
+ {QM_TOTAL_QP_NUM_CAP, 0x100158, 0, GENMASK(10, 0), 0x1000, 0x400, 0x400},
+ {QM_FUNC_MAX_QP_CAP, 0x100158, 11, GENMASK(10, 0), 0x1000, 0x400, 0x400},
+ {QM_XEQ_DEPTH_CAP, 0x3104, 0, GENMASK(31, 0), 0x800, 0x4000800, 0x4000800},
+ {QM_QP_DEPTH_CAP, 0x3108, 0, GENMASK(31, 0), 0x4000400, 0x4000400, 0x4000400},
+ {QM_EQ_IRQ_TYPE_CAP, 0x310c, 0, GENMASK(31, 0), 0x10000, 0x10000, 0x10000},
+ {QM_AEQ_IRQ_TYPE_CAP, 0x3110, 0, GENMASK(31, 0), 0x0, 0x10001, 0x10001},
+ {QM_ABN_IRQ_TYPE_CAP, 0x3114, 0, GENMASK(31, 0), 0x0, 0x10003, 0x10003},
+ {QM_PF2VF_IRQ_TYPE_CAP, 0x3118, 0, GENMASK(31, 0), 0x0, 0x0, 0x10002},
+ {QM_PF_IRQ_NUM_CAP, 0x311c, 16, GENMASK(15, 0), 0x1, 0x4, 0x4},
+ {QM_VF_IRQ_NUM_CAP, 0x311c, 0, GENMASK(15, 0), 0x1, 0x2, 0x3},
+};
+
+static const u32 qm_pre_store_caps[] = {
+ QM_EQ_IRQ_TYPE_CAP,
+ QM_AEQ_IRQ_TYPE_CAP,
+ QM_ABN_IRQ_TYPE_CAP,
+ QM_PF2VF_IRQ_TYPE_CAP,
+};
+
+struct qm_mailbox {
+ __le16 w0;
+ __le16 queue_num;
+ __le32 base_l;
+ __le32 base_h;
+ __le32 rsvd;
+};
+
+struct qm_doorbell {
+ __le16 queue_num;
+ __le16 cmd;
+ __le16 index;
+ __le16 priority;
+};
+
+struct hisi_qm_resource {
+ struct hisi_qm *qm;
+ int distance;
+ struct list_head list;
+};
+
+struct hisi_qm_hw_ops {
+ int (*get_vft)(struct hisi_qm *qm, u32 *base, u32 *number);
+ void (*qm_db)(struct hisi_qm *qm, u16 qn,
+ u8 cmd, u16 index, u8 priority);
+ int (*debug_init)(struct hisi_qm *qm);
+ void (*hw_error_init)(struct hisi_qm *qm);
+ void (*hw_error_uninit)(struct hisi_qm *qm);
+ enum acc_err_result (*hw_error_handle)(struct hisi_qm *qm);
+ int (*set_msi)(struct hisi_qm *qm, bool set);
+};
+
+struct hisi_qm_hw_error {
+ u32 int_msk;
+ const char *msg;
+};
+
+static const struct hisi_qm_hw_error qm_hw_error[] = {
+ { .int_msk = BIT(0), .msg = "qm_axi_rresp" },
+ { .int_msk = BIT(1), .msg = "qm_axi_bresp" },
+ { .int_msk = BIT(2), .msg = "qm_ecc_mbit" },
+ { .int_msk = BIT(3), .msg = "qm_ecc_1bit" },
+ { .int_msk = BIT(4), .msg = "qm_acc_get_task_timeout" },
+ { .int_msk = BIT(5), .msg = "qm_acc_do_task_timeout" },
+ { .int_msk = BIT(6), .msg = "qm_acc_wb_not_ready_timeout" },
+ { .int_msk = BIT(7), .msg = "qm_sq_cq_vf_invalid" },
+ { .int_msk = BIT(8), .msg = "qm_cq_vf_invalid" },
+ { .int_msk = BIT(9), .msg = "qm_sq_vf_invalid" },
+ { .int_msk = BIT(10), .msg = "qm_db_timeout" },
+ { .int_msk = BIT(11), .msg = "qm_of_fifo_of" },
+ { .int_msk = BIT(12), .msg = "qm_db_random_invalid" },
+ { .int_msk = BIT(13), .msg = "qm_mailbox_timeout" },
+ { .int_msk = BIT(14), .msg = "qm_flr_timeout" },
+ { /* sentinel */ }
+};
+
+static const char * const qm_db_timeout[] = {
+ "sq", "cq", "eq", "aeq",
+};
+
+static const char * const qm_fifo_overflow[] = {
+ "cq", "eq", "aeq",
+};
+
+static const char * const qp_s[] = {
+ "none", "init", "start", "stop", "close",
+};
+
+struct qm_typical_qos_table {
+ u32 start;
+ u32 end;
+ u32 val;
+};
+
+/* the qos step is 100 */
+static struct qm_typical_qos_table shaper_cir_s[] = {
+ {100, 100, 4},
+ {200, 200, 3},
+ {300, 500, 2},
+ {600, 1000, 1},
+ {1100, 100000, 0},
+};
+
+static struct qm_typical_qos_table shaper_cbs_s[] = {
+ {100, 200, 9},
+ {300, 500, 11},
+ {600, 1000, 12},
+ {1100, 10000, 16},
+ {10100, 25000, 17},
+ {25100, 50000, 18},
+ {50100, 100000, 19}
+};
+
+static void qm_irqs_unregister(struct hisi_qm *qm);
+
+static bool qm_avail_state(struct hisi_qm *qm, enum qm_state new)
+{
+ enum qm_state curr = atomic_read(&qm->status.flags);
+ bool avail = false;
+
+ switch (curr) {
+ case QM_INIT:
+ if (new == QM_START || new == QM_CLOSE)
+ avail = true;
+ break;
+ case QM_START:
+ if (new == QM_STOP)
+ avail = true;
+ break;
+ case QM_STOP:
+ if (new == QM_CLOSE || new == QM_START)
+ avail = true;
+ break;
+ default:
+ break;
+ }
+
+ dev_dbg(&qm->pdev->dev, "change qm state from %s to %s\n",
+ qm_s[curr], qm_s[new]);
+
+ if (!avail)
+ dev_warn(&qm->pdev->dev, "Can not change qm state from %s to %s\n",
+ qm_s[curr], qm_s[new]);
+
+ return avail;
+}
+
+static bool qm_qp_avail_state(struct hisi_qm *qm, struct hisi_qp *qp,
+ enum qp_state new)
+{
+ enum qm_state qm_curr = atomic_read(&qm->status.flags);
+ enum qp_state qp_curr = 0;
+ bool avail = false;
+
+ if (qp)
+ qp_curr = atomic_read(&qp->qp_status.flags);
+
+ switch (new) {
+ case QP_INIT:
+ if (qm_curr == QM_START || qm_curr == QM_INIT)
+ avail = true;
+ break;
+ case QP_START:
+ if ((qm_curr == QM_START && qp_curr == QP_INIT) ||
+ (qm_curr == QM_START && qp_curr == QP_STOP))
+ avail = true;
+ break;
+ case QP_STOP:
+ if ((qm_curr == QM_START && qp_curr == QP_START) ||
+ (qp_curr == QP_INIT))
+ avail = true;
+ break;
+ case QP_CLOSE:
+ if ((qm_curr == QM_START && qp_curr == QP_INIT) ||
+ (qm_curr == QM_START && qp_curr == QP_STOP) ||
+ (qm_curr == QM_STOP && qp_curr == QP_STOP) ||
+ (qm_curr == QM_STOP && qp_curr == QP_INIT))
+ avail = true;
+ break;
+ default:
+ break;
+ }
+
+ dev_dbg(&qm->pdev->dev, "change qp state from %s to %s in QM %s\n",
+ qp_s[qp_curr], qp_s[new], qm_s[qm_curr]);
+
+ if (!avail)
+ dev_warn(&qm->pdev->dev,
+ "Can not change qp state from %s to %s in QM %s\n",
+ qp_s[qp_curr], qp_s[new], qm_s[qm_curr]);
+
+ return avail;
+}
+
+static u32 qm_get_hw_error_status(struct hisi_qm *qm)
+{
+ return readl(qm->io_base + QM_ABNORMAL_INT_STATUS);
+}
+
+static u32 qm_get_dev_err_status(struct hisi_qm *qm)
+{
+ return qm->err_ini->get_dev_hw_err_status(qm);
+}
+
+/* Check if the error causes the master ooo block */
+static bool qm_check_dev_error(struct hisi_qm *qm)
+{
+ u32 val, dev_val;
+
+ if (qm->fun_type == QM_HW_VF)
+ return false;
+
+ val = qm_get_hw_error_status(qm) & qm->err_info.qm_shutdown_mask;
+ dev_val = qm_get_dev_err_status(qm) & qm->err_info.dev_shutdown_mask;
+
+ return val || dev_val;
+}
+
+static int qm_wait_reset_finish(struct hisi_qm *qm)
+{
+ int delay = 0;
+
+ /* All reset requests need to be queued for processing */
+ while (test_and_set_bit(QM_RESETTING, &qm->misc_ctl)) {
+ msleep(++delay);
+ if (delay > QM_RESET_WAIT_TIMEOUT)
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int qm_reset_prepare_ready(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ struct hisi_qm *pf_qm = pci_get_drvdata(pci_physfn(pdev));
+
+ /*
+ * PF and VF on host doesnot support resetting at the
+ * same time on Kunpeng920.
+ */
+ if (qm->ver < QM_HW_V3)
+ return qm_wait_reset_finish(pf_qm);
+
+ return qm_wait_reset_finish(qm);
+}
+
+static void qm_reset_bit_clear(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ struct hisi_qm *pf_qm = pci_get_drvdata(pci_physfn(pdev));
+
+ if (qm->ver < QM_HW_V3)
+ clear_bit(QM_RESETTING, &pf_qm->misc_ctl);
+
+ clear_bit(QM_RESETTING, &qm->misc_ctl);
+}
+
+static void qm_mb_pre_init(struct qm_mailbox *mailbox, u8 cmd,
+ u64 base, u16 queue, bool op)
+{
+ mailbox->w0 = cpu_to_le16((cmd) |
+ ((op) ? 0x1 << QM_MB_OP_SHIFT : 0) |
+ (0x1 << QM_MB_BUSY_SHIFT));
+ mailbox->queue_num = cpu_to_le16(queue);
+ mailbox->base_l = cpu_to_le32(lower_32_bits(base));
+ mailbox->base_h = cpu_to_le32(upper_32_bits(base));
+ mailbox->rsvd = 0;
+}
+
+/* return 0 mailbox ready, -ETIMEDOUT hardware timeout */
+int hisi_qm_wait_mb_ready(struct hisi_qm *qm)
+{
+ u32 val;
+
+ return readl_relaxed_poll_timeout(qm->io_base + QM_MB_CMD_SEND_BASE,
+ val, !((val >> QM_MB_BUSY_SHIFT) &
+ 0x1), POLL_PERIOD, POLL_TIMEOUT);
+}
+EXPORT_SYMBOL_GPL(hisi_qm_wait_mb_ready);
+
+/* 128 bit should be written to hardware at one time to trigger a mailbox */
+static void qm_mb_write(struct hisi_qm *qm, const void *src)
+{
+ void __iomem *fun_base = qm->io_base + QM_MB_CMD_SEND_BASE;
+ unsigned long tmp0 = 0, tmp1 = 0;
+
+ if (!IS_ENABLED(CONFIG_ARM64)) {
+ memcpy_toio(fun_base, src, 16);
+ dma_wmb();
+ return;
+ }
+
+ asm volatile("ldp %0, %1, %3\n"
+ "stp %0, %1, %2\n"
+ "dmb oshst\n"
+ : "=&r" (tmp0),
+ "=&r" (tmp1),
+ "+Q" (*((char __iomem *)fun_base))
+ : "Q" (*((char *)src))
+ : "memory");
+}
+
+static int qm_mb_nolock(struct hisi_qm *qm, struct qm_mailbox *mailbox)
+{
+ int ret;
+ u32 val;
+
+ if (unlikely(hisi_qm_wait_mb_ready(qm))) {
+ dev_err(&qm->pdev->dev, "QM mailbox is busy to start!\n");
+ ret = -EBUSY;
+ goto mb_busy;
+ }
+
+ qm_mb_write(qm, mailbox);
+
+ if (unlikely(hisi_qm_wait_mb_ready(qm))) {
+ dev_err(&qm->pdev->dev, "QM mailbox operation timeout!\n");
+ ret = -ETIMEDOUT;
+ goto mb_busy;
+ }
+
+ val = readl(qm->io_base + QM_MB_CMD_SEND_BASE);
+ if (val & QM_MB_STATUS_MASK) {
+ dev_err(&qm->pdev->dev, "QM mailbox operation failed!\n");
+ ret = -EIO;
+ goto mb_busy;
+ }
+
+ return 0;
+
+mb_busy:
+ atomic64_inc(&qm->debug.dfx.mb_err_cnt);
+ return ret;
+}
+
+int hisi_qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue,
+ bool op)
+{
+ struct qm_mailbox mailbox;
+ int ret;
+
+ dev_dbg(&qm->pdev->dev, "QM mailbox request to q%u: %u-%llx\n",
+ queue, cmd, (unsigned long long)dma_addr);
+
+ qm_mb_pre_init(&mailbox, cmd, dma_addr, queue, op);
+
+ mutex_lock(&qm->mailbox_lock);
+ ret = qm_mb_nolock(qm, &mailbox);
+ mutex_unlock(&qm->mailbox_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_mb);
+
+static void qm_db_v1(struct hisi_qm *qm, u16 qn, u8 cmd, u16 index, u8 priority)
+{
+ u64 doorbell;
+
+ doorbell = qn | ((u64)cmd << QM_DB_CMD_SHIFT_V1) |
+ ((u64)index << QM_DB_INDEX_SHIFT_V1) |
+ ((u64)priority << QM_DB_PRIORITY_SHIFT_V1);
+
+ writeq(doorbell, qm->io_base + QM_DOORBELL_BASE_V1);
+}
+
+static void qm_db_v2(struct hisi_qm *qm, u16 qn, u8 cmd, u16 index, u8 priority)
+{
+ void __iomem *io_base = qm->io_base;
+ u16 randata = 0;
+ u64 doorbell;
+
+ if (cmd == QM_DOORBELL_CMD_SQ || cmd == QM_DOORBELL_CMD_CQ)
+ io_base = qm->db_io_base + (u64)qn * qm->db_interval +
+ QM_DOORBELL_SQ_CQ_BASE_V2;
+ else
+ io_base += QM_DOORBELL_EQ_AEQ_BASE_V2;
+
+ doorbell = qn | ((u64)cmd << QM_DB_CMD_SHIFT_V2) |
+ ((u64)randata << QM_DB_RAND_SHIFT_V2) |
+ ((u64)index << QM_DB_INDEX_SHIFT_V2) |
+ ((u64)priority << QM_DB_PRIORITY_SHIFT_V2);
+
+ writeq(doorbell, io_base);
+}
+
+static void qm_db(struct hisi_qm *qm, u16 qn, u8 cmd, u16 index, u8 priority)
+{
+ dev_dbg(&qm->pdev->dev, "QM doorbell request: qn=%u, cmd=%u, index=%u\n",
+ qn, cmd, index);
+
+ qm->ops->qm_db(qm, qn, cmd, index, priority);
+}
+
+static void qm_disable_clock_gate(struct hisi_qm *qm)
+{
+ u32 val;
+
+ /* if qm enables clock gating in Kunpeng930, qos will be inaccurate. */
+ if (qm->ver < QM_HW_V3)
+ return;
+
+ val = readl(qm->io_base + QM_PM_CTRL);
+ val |= QM_IDLE_DISABLE;
+ writel(val, qm->io_base + QM_PM_CTRL);
+}
+
+static int qm_dev_mem_reset(struct hisi_qm *qm)
+{
+ u32 val;
+
+ writel(0x1, qm->io_base + QM_MEM_START_INIT);
+ return readl_relaxed_poll_timeout(qm->io_base + QM_MEM_INIT_DONE, val,
+ val & BIT(0), POLL_PERIOD,
+ POLL_TIMEOUT);
+}
+
+/**
+ * hisi_qm_get_hw_info() - Get device information.
+ * @qm: The qm which want to get information.
+ * @info_table: Array for storing device information.
+ * @index: Index in info_table.
+ * @is_read: Whether read from reg, 0: not support read from reg.
+ *
+ * This function returns device information the caller needs.
+ */
+u32 hisi_qm_get_hw_info(struct hisi_qm *qm,
+ const struct hisi_qm_cap_info *info_table,
+ u32 index, bool is_read)
+{
+ u32 val;
+
+ switch (qm->ver) {
+ case QM_HW_V1:
+ return info_table[index].v1_val;
+ case QM_HW_V2:
+ return info_table[index].v2_val;
+ default:
+ if (!is_read)
+ return info_table[index].v3_val;
+
+ val = readl(qm->io_base + info_table[index].offset);
+ return (val >> info_table[index].shift) & info_table[index].mask;
+ }
+}
+EXPORT_SYMBOL_GPL(hisi_qm_get_hw_info);
+
+static void qm_get_xqc_depth(struct hisi_qm *qm, u16 *low_bits,
+ u16 *high_bits, enum qm_basic_type type)
+{
+ u32 depth;
+
+ depth = hisi_qm_get_hw_info(qm, qm_basic_info, type, qm->cap_ver);
+ *low_bits = depth & QM_XQ_DEPTH_MASK;
+ *high_bits = (depth >> QM_XQ_DEPTH_SHIFT) & QM_XQ_DEPTH_MASK;
+}
+
+int hisi_qm_set_algs(struct hisi_qm *qm, u64 alg_msk, const struct qm_dev_alg *dev_algs,
+ u32 dev_algs_size)
+{
+ struct device *dev = &qm->pdev->dev;
+ char *algs, *ptr;
+ int i;
+
+ if (!qm->uacce)
+ return 0;
+
+ if (dev_algs_size >= QM_DEV_ALG_MAX_LEN) {
+ dev_err(dev, "algs size %u is equal or larger than %d.\n",
+ dev_algs_size, QM_DEV_ALG_MAX_LEN);
+ return -EINVAL;
+ }
+
+ algs = devm_kzalloc(dev, QM_DEV_ALG_MAX_LEN * sizeof(char), GFP_KERNEL);
+ if (!algs)
+ return -ENOMEM;
+
+ for (i = 0; i < dev_algs_size; i++)
+ if (alg_msk & dev_algs[i].alg_msk)
+ strcat(algs, dev_algs[i].alg);
+
+ ptr = strrchr(algs, '\n');
+ if (ptr) {
+ *ptr = '\0';
+ qm->uacce->algs = algs;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_set_algs);
+
+static u32 qm_get_irq_num(struct hisi_qm *qm)
+{
+ if (qm->fun_type == QM_HW_PF)
+ return hisi_qm_get_hw_info(qm, qm_basic_info, QM_PF_IRQ_NUM_CAP, qm->cap_ver);
+
+ return hisi_qm_get_hw_info(qm, qm_basic_info, QM_VF_IRQ_NUM_CAP, qm->cap_ver);
+}
+
+static int qm_pm_get_sync(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ int ret;
+
+ if (!test_bit(QM_SUPPORT_RPM, &qm->caps))
+ return 0;
+
+ ret = pm_runtime_resume_and_get(dev);
+ if (ret < 0) {
+ dev_err(dev, "failed to get_sync(%d).\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void qm_pm_put_sync(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+
+ if (!test_bit(QM_SUPPORT_RPM, &qm->caps))
+ return;
+
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+}
+
+static void qm_cq_head_update(struct hisi_qp *qp)
+{
+ if (qp->qp_status.cq_head == qp->cq_depth - 1) {
+ qp->qp_status.cqc_phase = !qp->qp_status.cqc_phase;
+ qp->qp_status.cq_head = 0;
+ } else {
+ qp->qp_status.cq_head++;
+ }
+}
+
+static void qm_poll_req_cb(struct hisi_qp *qp)
+{
+ struct qm_cqe *cqe = qp->cqe + qp->qp_status.cq_head;
+ struct hisi_qm *qm = qp->qm;
+
+ while (QM_CQE_PHASE(cqe) == qp->qp_status.cqc_phase) {
+ dma_rmb();
+ qp->req_cb(qp, qp->sqe + qm->sqe_size *
+ le16_to_cpu(cqe->sq_head));
+ qm_cq_head_update(qp);
+ cqe = qp->cqe + qp->qp_status.cq_head;
+ qm_db(qm, qp->qp_id, QM_DOORBELL_CMD_CQ,
+ qp->qp_status.cq_head, 0);
+ atomic_dec(&qp->qp_status.used);
+
+ cond_resched();
+ }
+
+ /* set c_flag */
+ qm_db(qm, qp->qp_id, QM_DOORBELL_CMD_CQ, qp->qp_status.cq_head, 1);
+}
+
+static int qm_get_complete_eqe_num(struct hisi_qm_poll_data *poll_data)
+{
+ struct hisi_qm *qm = poll_data->qm;
+ struct qm_eqe *eqe = qm->eqe + qm->status.eq_head;
+ u16 eq_depth = qm->eq_depth;
+ int eqe_num = 0;
+ u16 cqn;
+
+ while (QM_EQE_PHASE(eqe) == qm->status.eqc_phase) {
+ cqn = le32_to_cpu(eqe->dw0) & QM_EQE_CQN_MASK;
+ poll_data->qp_finish_id[eqe_num] = cqn;
+ eqe_num++;
+
+ if (qm->status.eq_head == eq_depth - 1) {
+ qm->status.eqc_phase = !qm->status.eqc_phase;
+ eqe = qm->eqe;
+ qm->status.eq_head = 0;
+ } else {
+ eqe++;
+ qm->status.eq_head++;
+ }
+
+ if (eqe_num == (eq_depth >> 1) - 1)
+ break;
+ }
+
+ qm_db(qm, 0, QM_DOORBELL_CMD_EQ, qm->status.eq_head, 0);
+
+ return eqe_num;
+}
+
+static void qm_work_process(struct work_struct *work)
+{
+ struct hisi_qm_poll_data *poll_data =
+ container_of(work, struct hisi_qm_poll_data, work);
+ struct hisi_qm *qm = poll_data->qm;
+ struct hisi_qp *qp;
+ int eqe_num, i;
+
+ /* Get qp id of completed tasks and re-enable the interrupt. */
+ eqe_num = qm_get_complete_eqe_num(poll_data);
+ for (i = eqe_num - 1; i >= 0; i--) {
+ qp = &qm->qp_array[poll_data->qp_finish_id[i]];
+ if (unlikely(atomic_read(&qp->qp_status.flags) == QP_STOP))
+ continue;
+
+ if (qp->event_cb) {
+ qp->event_cb(qp);
+ continue;
+ }
+
+ if (likely(qp->req_cb))
+ qm_poll_req_cb(qp);
+ }
+}
+
+static bool do_qm_irq(struct hisi_qm *qm)
+{
+ struct qm_eqe *eqe = qm->eqe + qm->status.eq_head;
+ struct hisi_qm_poll_data *poll_data;
+ u16 cqn;
+
+ if (!readl(qm->io_base + QM_VF_EQ_INT_SOURCE))
+ return false;
+
+ if (QM_EQE_PHASE(eqe) == qm->status.eqc_phase) {
+ cqn = le32_to_cpu(eqe->dw0) & QM_EQE_CQN_MASK;
+ poll_data = &qm->poll_data[cqn];
+ queue_work(qm->wq, &poll_data->work);
+
+ return true;
+ }
+
+ return false;
+}
+
+static irqreturn_t qm_irq(int irq, void *data)
+{
+ struct hisi_qm *qm = data;
+ bool ret;
+
+ ret = do_qm_irq(qm);
+ if (ret)
+ return IRQ_HANDLED;
+
+ atomic64_inc(&qm->debug.dfx.err_irq_cnt);
+ qm_db(qm, 0, QM_DOORBELL_CMD_EQ, qm->status.eq_head, 0);
+
+ return IRQ_NONE;
+}
+
+static irqreturn_t qm_mb_cmd_irq(int irq, void *data)
+{
+ struct hisi_qm *qm = data;
+ u32 val;
+
+ val = readl(qm->io_base + QM_IFC_INT_STATUS);
+ val &= QM_IFC_INT_STATUS_MASK;
+ if (!val)
+ return IRQ_NONE;
+
+ schedule_work(&qm->cmd_process);
+
+ return IRQ_HANDLED;
+}
+
+static void qm_set_qp_disable(struct hisi_qp *qp, int offset)
+{
+ u32 *addr;
+
+ if (qp->is_in_kernel)
+ return;
+
+ addr = (u32 *)(qp->qdma.va + qp->qdma.size) - offset;
+ *addr = 1;
+
+ /* make sure setup is completed */
+ smp_wmb();
+}
+
+static void qm_disable_qp(struct hisi_qm *qm, u32 qp_id)
+{
+ struct hisi_qp *qp = &qm->qp_array[qp_id];
+
+ qm_set_qp_disable(qp, QM_RESET_STOP_TX_OFFSET);
+ hisi_qm_stop_qp(qp);
+ qm_set_qp_disable(qp, QM_RESET_STOP_RX_OFFSET);
+}
+
+static void qm_reset_function(struct hisi_qm *qm)
+{
+ struct hisi_qm *pf_qm = pci_get_drvdata(pci_physfn(qm->pdev));
+ struct device *dev = &qm->pdev->dev;
+ int ret;
+
+ if (qm_check_dev_error(pf_qm))
+ return;
+
+ ret = qm_reset_prepare_ready(qm);
+ if (ret) {
+ dev_err(dev, "reset function not ready\n");
+ return;
+ }
+
+ ret = hisi_qm_stop(qm, QM_FLR);
+ if (ret) {
+ dev_err(dev, "failed to stop qm when reset function\n");
+ goto clear_bit;
+ }
+
+ ret = hisi_qm_start(qm);
+ if (ret)
+ dev_err(dev, "failed to start qm when reset function\n");
+
+clear_bit:
+ qm_reset_bit_clear(qm);
+}
+
+static irqreturn_t qm_aeq_thread(int irq, void *data)
+{
+ struct hisi_qm *qm = data;
+ struct qm_aeqe *aeqe = qm->aeqe + qm->status.aeq_head;
+ u16 aeq_depth = qm->aeq_depth;
+ u32 type, qp_id;
+
+ while (QM_AEQE_PHASE(aeqe) == qm->status.aeqc_phase) {
+ type = le32_to_cpu(aeqe->dw0) >> QM_AEQE_TYPE_SHIFT;
+ qp_id = le32_to_cpu(aeqe->dw0) & QM_AEQE_CQN_MASK;
+
+ switch (type) {
+ case QM_EQ_OVERFLOW:
+ dev_err(&qm->pdev->dev, "eq overflow, reset function\n");
+ qm_reset_function(qm);
+ return IRQ_HANDLED;
+ case QM_CQ_OVERFLOW:
+ dev_err(&qm->pdev->dev, "cq overflow, stop qp(%u)\n",
+ qp_id);
+ fallthrough;
+ case QM_CQE_ERROR:
+ qm_disable_qp(qm, qp_id);
+ break;
+ default:
+ dev_err(&qm->pdev->dev, "unknown error type %u\n",
+ type);
+ break;
+ }
+
+ if (qm->status.aeq_head == aeq_depth - 1) {
+ qm->status.aeqc_phase = !qm->status.aeqc_phase;
+ aeqe = qm->aeqe;
+ qm->status.aeq_head = 0;
+ } else {
+ aeqe++;
+ qm->status.aeq_head++;
+ }
+ }
+
+ qm_db(qm, 0, QM_DOORBELL_CMD_AEQ, qm->status.aeq_head, 0);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t qm_aeq_irq(int irq, void *data)
+{
+ struct hisi_qm *qm = data;
+
+ atomic64_inc(&qm->debug.dfx.aeq_irq_cnt);
+ if (!readl(qm->io_base + QM_VF_AEQ_INT_SOURCE))
+ return IRQ_NONE;
+
+ return IRQ_WAKE_THREAD;
+}
+
+static void qm_init_qp_status(struct hisi_qp *qp)
+{
+ struct hisi_qp_status *qp_status = &qp->qp_status;
+
+ qp_status->sq_tail = 0;
+ qp_status->cq_head = 0;
+ qp_status->cqc_phase = true;
+ atomic_set(&qp_status->used, 0);
+}
+
+static void qm_init_prefetch(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ u32 page_type = 0x0;
+
+ if (!test_bit(QM_SUPPORT_SVA_PREFETCH, &qm->caps))
+ return;
+
+ switch (PAGE_SIZE) {
+ case SZ_4K:
+ page_type = 0x0;
+ break;
+ case SZ_16K:
+ page_type = 0x1;
+ break;
+ case SZ_64K:
+ page_type = 0x2;
+ break;
+ default:
+ dev_err(dev, "system page size is not support: %lu, default set to 4KB",
+ PAGE_SIZE);
+ }
+
+ writel(page_type, qm->io_base + QM_PAGE_SIZE);
+}
+
+/*
+ * acc_shaper_para_calc() Get the IR value by the qos formula, the return value
+ * is the expected qos calculated.
+ * the formula:
+ * IR = X Mbps if ir = 1 means IR = 100 Mbps, if ir = 10000 means = 10Gbps
+ *
+ * IR_b * (2 ^ IR_u) * 8000
+ * IR(Mbps) = -------------------------
+ * Tick * (2 ^ IR_s)
+ */
+static u32 acc_shaper_para_calc(u64 cir_b, u64 cir_u, u64 cir_s)
+{
+ return ((cir_b * QM_QOS_DIVISOR_CLK) * (1 << cir_u)) /
+ (QM_QOS_TICK * (1 << cir_s));
+}
+
+static u32 acc_shaper_calc_cbs_s(u32 ir)
+{
+ int table_size = ARRAY_SIZE(shaper_cbs_s);
+ int i;
+
+ for (i = 0; i < table_size; i++) {
+ if (ir >= shaper_cbs_s[i].start && ir <= shaper_cbs_s[i].end)
+ return shaper_cbs_s[i].val;
+ }
+
+ return QM_SHAPER_MIN_CBS_S;
+}
+
+static u32 acc_shaper_calc_cir_s(u32 ir)
+{
+ int table_size = ARRAY_SIZE(shaper_cir_s);
+ int i;
+
+ for (i = 0; i < table_size; i++) {
+ if (ir >= shaper_cir_s[i].start && ir <= shaper_cir_s[i].end)
+ return shaper_cir_s[i].val;
+ }
+
+ return 0;
+}
+
+static int qm_get_shaper_para(u32 ir, struct qm_shaper_factor *factor)
+{
+ u32 cir_b, cir_u, cir_s, ir_calc;
+ u32 error_rate;
+
+ factor->cbs_s = acc_shaper_calc_cbs_s(ir);
+ cir_s = acc_shaper_calc_cir_s(ir);
+
+ for (cir_b = QM_QOS_MIN_CIR_B; cir_b <= QM_QOS_MAX_CIR_B; cir_b++) {
+ for (cir_u = 0; cir_u <= QM_QOS_MAX_CIR_U; cir_u++) {
+ ir_calc = acc_shaper_para_calc(cir_b, cir_u, cir_s);
+
+ error_rate = QM_QOS_EXPAND_RATE * (u32)abs(ir_calc - ir) / ir;
+ if (error_rate <= QM_QOS_MIN_ERROR_RATE) {
+ factor->cir_b = cir_b;
+ factor->cir_u = cir_u;
+ factor->cir_s = cir_s;
+ return 0;
+ }
+ }
+ }
+
+ return -EINVAL;
+}
+
+static void qm_vft_data_cfg(struct hisi_qm *qm, enum vft_type type, u32 base,
+ u32 number, struct qm_shaper_factor *factor)
+{
+ u64 tmp = 0;
+
+ if (number > 0) {
+ switch (type) {
+ case SQC_VFT:
+ if (qm->ver == QM_HW_V1) {
+ 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;
+ } else {
+ tmp = (u64)base << QM_SQC_VFT_START_SQN_SHIFT |
+ QM_SQC_VFT_VALID |
+ (u64)(number - 1) << QM_SQC_VFT_SQN_SHIFT;
+ }
+ break;
+ case CQC_VFT:
+ if (qm->ver == QM_HW_V1) {
+ tmp = QM_CQC_VFT_BUF_SIZE |
+ QM_CQC_VFT_SQC_SIZE |
+ QM_CQC_VFT_INDEX_NUMBER |
+ QM_CQC_VFT_VALID;
+ } else {
+ tmp = QM_CQC_VFT_VALID;
+ }
+ break;
+ case SHAPER_VFT:
+ if (factor) {
+ tmp = factor->cir_b |
+ (factor->cir_u << QM_SHAPER_FACTOR_CIR_U_SHIFT) |
+ (factor->cir_s << QM_SHAPER_FACTOR_CIR_S_SHIFT) |
+ (QM_SHAPER_CBS_B << QM_SHAPER_FACTOR_CBS_B_SHIFT) |
+ (factor->cbs_s << QM_SHAPER_FACTOR_CBS_S_SHIFT);
+ }
+ break;
+ }
+ }
+
+ writel(lower_32_bits(tmp), qm->io_base + QM_VFT_CFG_DATA_L);
+ writel(upper_32_bits(tmp), qm->io_base + QM_VFT_CFG_DATA_H);
+}
+
+static int qm_set_vft_common(struct hisi_qm *qm, enum vft_type type,
+ u32 fun_num, u32 base, u32 number)
+{
+ struct qm_shaper_factor *factor = NULL;
+ unsigned int val;
+ int ret;
+
+ if (type == SHAPER_VFT && test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps))
+ factor = &qm->factor[fun_num];
+
+ ret = readl_relaxed_poll_timeout(qm->io_base + QM_VFT_CFG_RDY, val,
+ val & BIT(0), POLL_PERIOD,
+ POLL_TIMEOUT);
+ if (ret)
+ return ret;
+
+ writel(0x0, qm->io_base + QM_VFT_CFG_OP_WR);
+ writel(type, qm->io_base + QM_VFT_CFG_TYPE);
+ if (type == SHAPER_VFT)
+ fun_num |= base << QM_SHAPER_VFT_OFFSET;
+
+ writel(fun_num, qm->io_base + QM_VFT_CFG);
+
+ qm_vft_data_cfg(qm, type, base, number, factor);
+
+ writel(0x0, qm->io_base + QM_VFT_CFG_RDY);
+ writel(0x1, qm->io_base + QM_VFT_CFG_OP_ENABLE);
+
+ return readl_relaxed_poll_timeout(qm->io_base + QM_VFT_CFG_RDY, val,
+ val & BIT(0), POLL_PERIOD,
+ POLL_TIMEOUT);
+}
+
+static int qm_shaper_init_vft(struct hisi_qm *qm, u32 fun_num)
+{
+ u32 qos = qm->factor[fun_num].func_qos;
+ int ret, i;
+
+ ret = qm_get_shaper_para(qos * QM_QOS_RATE, &qm->factor[fun_num]);
+ if (ret) {
+ dev_err(&qm->pdev->dev, "failed to calculate shaper parameter!\n");
+ return ret;
+ }
+ writel(qm->type_rate, qm->io_base + QM_SHAPER_CFG);
+ for (i = ALG_TYPE_0; i <= ALG_TYPE_1; i++) {
+ /* The base number of queue reuse for different alg type */
+ ret = qm_set_vft_common(qm, SHAPER_VFT, fun_num, i, 1);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+/* The config should be conducted after qm_dev_mem_reset() */
+static int qm_set_sqc_cqc_vft(struct hisi_qm *qm, u32 fun_num, u32 base,
+ u32 number)
+{
+ int ret, i;
+
+ for (i = SQC_VFT; i <= CQC_VFT; i++) {
+ ret = qm_set_vft_common(qm, i, fun_num, base, number);
+ if (ret)
+ return ret;
+ }
+
+ /* init default shaper qos val */
+ if (test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps)) {
+ ret = qm_shaper_init_vft(qm, fun_num);
+ if (ret)
+ goto back_sqc_cqc;
+ }
+
+ return 0;
+back_sqc_cqc:
+ for (i = SQC_VFT; i <= CQC_VFT; i++)
+ qm_set_vft_common(qm, i, fun_num, 0, 0);
+
+ return ret;
+}
+
+static int qm_get_vft_v2(struct hisi_qm *qm, u32 *base, u32 *number)
+{
+ u64 sqc_vft;
+ int ret;
+
+ ret = hisi_qm_mb(qm, QM_MB_CMD_SQC_VFT_V2, 0, 0, 1);
+ if (ret)
+ return ret;
+
+ sqc_vft = readl(qm->io_base + QM_MB_CMD_DATA_ADDR_L) |
+ ((u64)readl(qm->io_base + QM_MB_CMD_DATA_ADDR_H) << 32);
+ *base = QM_SQC_VFT_BASE_MASK_V2 & (sqc_vft >> QM_SQC_VFT_BASE_SHIFT_V2);
+ *number = (QM_SQC_VFT_NUM_MASK_v2 &
+ (sqc_vft >> QM_SQC_VFT_NUM_SHIFT_V2)) + 1;
+
+ return 0;
+}
+
+void *hisi_qm_ctx_alloc(struct hisi_qm *qm, size_t ctx_size,
+ dma_addr_t *dma_addr)
+{
+ struct device *dev = &qm->pdev->dev;
+ void *ctx_addr;
+
+ ctx_addr = kzalloc(ctx_size, GFP_KERNEL);
+ if (!ctx_addr)
+ return ERR_PTR(-ENOMEM);
+
+ *dma_addr = dma_map_single(dev, ctx_addr, ctx_size, DMA_FROM_DEVICE);
+ if (dma_mapping_error(dev, *dma_addr)) {
+ dev_err(dev, "DMA mapping error!\n");
+ kfree(ctx_addr);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ return ctx_addr;
+}
+
+void hisi_qm_ctx_free(struct hisi_qm *qm, size_t ctx_size,
+ const void *ctx_addr, dma_addr_t *dma_addr)
+{
+ struct device *dev = &qm->pdev->dev;
+
+ dma_unmap_single(dev, *dma_addr, ctx_size, DMA_FROM_DEVICE);
+ kfree(ctx_addr);
+}
+
+static int qm_dump_sqc_raw(struct hisi_qm *qm, dma_addr_t dma_addr, u16 qp_id)
+{
+ return hisi_qm_mb(qm, QM_MB_CMD_SQC, dma_addr, qp_id, 1);
+}
+
+static int qm_dump_cqc_raw(struct hisi_qm *qm, dma_addr_t dma_addr, u16 qp_id)
+{
+ return hisi_qm_mb(qm, QM_MB_CMD_CQC, dma_addr, qp_id, 1);
+}
+
+static void qm_hw_error_init_v1(struct hisi_qm *qm)
+{
+ writel(QM_ABNORMAL_INT_MASK_VALUE, qm->io_base + QM_ABNORMAL_INT_MASK);
+}
+
+static void qm_hw_error_cfg(struct hisi_qm *qm)
+{
+ struct hisi_qm_err_info *err_info = &qm->err_info;
+
+ qm->error_mask = err_info->nfe | err_info->ce | err_info->fe;
+ /* clear QM hw residual error source */
+ writel(qm->error_mask, qm->io_base + QM_ABNORMAL_INT_SOURCE);
+
+ /* configure error type */
+ writel(err_info->ce, qm->io_base + QM_RAS_CE_ENABLE);
+ writel(QM_RAS_CE_TIMES_PER_IRQ, qm->io_base + QM_RAS_CE_THRESHOLD);
+ writel(err_info->nfe, qm->io_base + QM_RAS_NFE_ENABLE);
+ writel(err_info->fe, qm->io_base + QM_RAS_FE_ENABLE);
+}
+
+static void qm_hw_error_init_v2(struct hisi_qm *qm)
+{
+ u32 irq_unmask;
+
+ qm_hw_error_cfg(qm);
+
+ irq_unmask = ~qm->error_mask;
+ irq_unmask &= readl(qm->io_base + QM_ABNORMAL_INT_MASK);
+ writel(irq_unmask, qm->io_base + QM_ABNORMAL_INT_MASK);
+}
+
+static void qm_hw_error_uninit_v2(struct hisi_qm *qm)
+{
+ u32 irq_mask = qm->error_mask;
+
+ irq_mask |= readl(qm->io_base + QM_ABNORMAL_INT_MASK);
+ writel(irq_mask, qm->io_base + QM_ABNORMAL_INT_MASK);
+}
+
+static void qm_hw_error_init_v3(struct hisi_qm *qm)
+{
+ u32 irq_unmask;
+
+ qm_hw_error_cfg(qm);
+
+ /* enable close master ooo when hardware error happened */
+ writel(qm->err_info.qm_shutdown_mask, qm->io_base + QM_OOO_SHUTDOWN_SEL);
+
+ irq_unmask = ~qm->error_mask;
+ irq_unmask &= readl(qm->io_base + QM_ABNORMAL_INT_MASK);
+ writel(irq_unmask, qm->io_base + QM_ABNORMAL_INT_MASK);
+}
+
+static void qm_hw_error_uninit_v3(struct hisi_qm *qm)
+{
+ u32 irq_mask = qm->error_mask;
+
+ irq_mask |= readl(qm->io_base + QM_ABNORMAL_INT_MASK);
+ writel(irq_mask, qm->io_base + QM_ABNORMAL_INT_MASK);
+
+ /* disable close master ooo when hardware error happened */
+ writel(0x0, qm->io_base + QM_OOO_SHUTDOWN_SEL);
+}
+
+static void qm_log_hw_error(struct hisi_qm *qm, u32 error_status)
+{
+ const struct hisi_qm_hw_error *err;
+ struct device *dev = &qm->pdev->dev;
+ u32 reg_val, type, vf_num;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(qm_hw_error); i++) {
+ err = &qm_hw_error[i];
+ if (!(err->int_msk & error_status))
+ continue;
+
+ dev_err(dev, "%s [error status=0x%x] found\n",
+ err->msg, err->int_msk);
+
+ if (err->int_msk & QM_DB_TIMEOUT) {
+ reg_val = readl(qm->io_base + QM_ABNORMAL_INF01);
+ type = (reg_val & QM_DB_TIMEOUT_TYPE) >>
+ QM_DB_TIMEOUT_TYPE_SHIFT;
+ vf_num = reg_val & QM_DB_TIMEOUT_VF;
+ dev_err(dev, "qm %s doorbell timeout in function %u\n",
+ qm_db_timeout[type], vf_num);
+ } else if (err->int_msk & QM_OF_FIFO_OF) {
+ reg_val = readl(qm->io_base + QM_ABNORMAL_INF00);
+ type = (reg_val & QM_FIFO_OVERFLOW_TYPE) >>
+ QM_FIFO_OVERFLOW_TYPE_SHIFT;
+ vf_num = reg_val & QM_FIFO_OVERFLOW_VF;
+
+ if (type < ARRAY_SIZE(qm_fifo_overflow))
+ dev_err(dev, "qm %s fifo overflow in function %u\n",
+ qm_fifo_overflow[type], vf_num);
+ else
+ dev_err(dev, "unknown error type\n");
+ }
+ }
+}
+
+static enum acc_err_result qm_hw_error_handle_v2(struct hisi_qm *qm)
+{
+ u32 error_status, tmp;
+
+ /* read err sts */
+ tmp = readl(qm->io_base + QM_ABNORMAL_INT_STATUS);
+ error_status = qm->error_mask & tmp;
+
+ if (error_status) {
+ if (error_status & QM_ECC_MBIT)
+ qm->err_status.is_qm_ecc_mbit = true;
+
+ qm_log_hw_error(qm, error_status);
+ if (error_status & qm->err_info.qm_reset_mask)
+ return ACC_ERR_NEED_RESET;
+
+ writel(error_status, qm->io_base + QM_ABNORMAL_INT_SOURCE);
+ writel(qm->err_info.nfe, qm->io_base + QM_RAS_NFE_ENABLE);
+ }
+
+ return ACC_ERR_RECOVERED;
+}
+
+static int qm_get_mb_cmd(struct hisi_qm *qm, u64 *msg, u16 fun_num)
+{
+ struct qm_mailbox mailbox;
+ int ret;
+
+ qm_mb_pre_init(&mailbox, QM_MB_CMD_DST, 0, fun_num, 0);
+ mutex_lock(&qm->mailbox_lock);
+ ret = qm_mb_nolock(qm, &mailbox);
+ if (ret)
+ goto err_unlock;
+
+ *msg = readl(qm->io_base + QM_MB_CMD_DATA_ADDR_L) |
+ ((u64)readl(qm->io_base + QM_MB_CMD_DATA_ADDR_H) << 32);
+
+err_unlock:
+ mutex_unlock(&qm->mailbox_lock);
+ return ret;
+}
+
+static void qm_clear_cmd_interrupt(struct hisi_qm *qm, u64 vf_mask)
+{
+ u32 val;
+
+ if (qm->fun_type == QM_HW_PF)
+ writeq(vf_mask, qm->io_base + QM_IFC_INT_SOURCE_P);
+
+ val = readl(qm->io_base + QM_IFC_INT_SOURCE_V);
+ val |= QM_IFC_INT_SOURCE_MASK;
+ writel(val, qm->io_base + QM_IFC_INT_SOURCE_V);
+}
+
+static void qm_handle_vf_msg(struct hisi_qm *qm, u32 vf_id)
+{
+ struct device *dev = &qm->pdev->dev;
+ u32 cmd;
+ u64 msg;
+ int ret;
+
+ ret = qm_get_mb_cmd(qm, &msg, vf_id);
+ if (ret) {
+ dev_err(dev, "failed to get msg from VF(%u)!\n", vf_id);
+ return;
+ }
+
+ cmd = msg & QM_MB_CMD_DATA_MASK;
+ switch (cmd) {
+ case QM_VF_PREPARE_FAIL:
+ dev_err(dev, "failed to stop VF(%u)!\n", vf_id);
+ break;
+ case QM_VF_START_FAIL:
+ dev_err(dev, "failed to start VF(%u)!\n", vf_id);
+ break;
+ case QM_VF_PREPARE_DONE:
+ case QM_VF_START_DONE:
+ break;
+ default:
+ dev_err(dev, "unsupported cmd %u sent by VF(%u)!\n", cmd, vf_id);
+ break;
+ }
+}
+
+static int qm_wait_vf_prepare_finish(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ u32 vfs_num = qm->vfs_num;
+ int cnt = 0;
+ int ret = 0;
+ u64 val;
+ u32 i;
+
+ if (!qm->vfs_num || !test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps))
+ return 0;
+
+ while (true) {
+ val = readq(qm->io_base + QM_IFC_INT_SOURCE_P);
+ /* All VFs send command to PF, break */
+ if ((val & GENMASK(vfs_num, 1)) == GENMASK(vfs_num, 1))
+ break;
+
+ if (++cnt > QM_MAX_PF_WAIT_COUNT) {
+ ret = -EBUSY;
+ break;
+ }
+
+ msleep(QM_WAIT_DST_ACK);
+ }
+
+ /* PF check VFs msg */
+ for (i = 1; i <= vfs_num; i++) {
+ if (val & BIT(i))
+ qm_handle_vf_msg(qm, i);
+ else
+ dev_err(dev, "VF(%u) not ping PF!\n", i);
+ }
+
+ /* PF clear interrupt to ack VFs */
+ qm_clear_cmd_interrupt(qm, val);
+
+ return ret;
+}
+
+static void qm_trigger_vf_interrupt(struct hisi_qm *qm, u32 fun_num)
+{
+ u32 val;
+
+ val = readl(qm->io_base + QM_IFC_INT_CFG);
+ val &= ~QM_IFC_SEND_ALL_VFS;
+ val |= fun_num;
+ writel(val, qm->io_base + QM_IFC_INT_CFG);
+
+ val = readl(qm->io_base + QM_IFC_INT_SET_P);
+ val |= QM_IFC_INT_SET_MASK;
+ writel(val, qm->io_base + QM_IFC_INT_SET_P);
+}
+
+static void qm_trigger_pf_interrupt(struct hisi_qm *qm)
+{
+ u32 val;
+
+ val = readl(qm->io_base + QM_IFC_INT_SET_V);
+ val |= QM_IFC_INT_SET_MASK;
+ writel(val, qm->io_base + QM_IFC_INT_SET_V);
+}
+
+static int qm_ping_single_vf(struct hisi_qm *qm, u64 cmd, u32 fun_num)
+{
+ struct device *dev = &qm->pdev->dev;
+ struct qm_mailbox mailbox;
+ int cnt = 0;
+ u64 val;
+ int ret;
+
+ qm_mb_pre_init(&mailbox, QM_MB_CMD_SRC, cmd, fun_num, 0);
+ mutex_lock(&qm->mailbox_lock);
+ ret = qm_mb_nolock(qm, &mailbox);
+ if (ret) {
+ dev_err(dev, "failed to send command to vf(%u)!\n", fun_num);
+ goto err_unlock;
+ }
+
+ qm_trigger_vf_interrupt(qm, fun_num);
+ while (true) {
+ msleep(QM_WAIT_DST_ACK);
+ val = readq(qm->io_base + QM_IFC_READY_STATUS);
+ /* if VF respond, PF notifies VF successfully. */
+ if (!(val & BIT(fun_num)))
+ goto err_unlock;
+
+ if (++cnt > QM_MAX_PF_WAIT_COUNT) {
+ dev_err(dev, "failed to get response from VF(%u)!\n", fun_num);
+ ret = -ETIMEDOUT;
+ break;
+ }
+ }
+
+err_unlock:
+ mutex_unlock(&qm->mailbox_lock);
+ return ret;
+}
+
+static int qm_ping_all_vfs(struct hisi_qm *qm, u64 cmd)
+{
+ struct device *dev = &qm->pdev->dev;
+ u32 vfs_num = qm->vfs_num;
+ struct qm_mailbox mailbox;
+ u64 val = 0;
+ int cnt = 0;
+ int ret;
+ u32 i;
+
+ qm_mb_pre_init(&mailbox, QM_MB_CMD_SRC, cmd, QM_MB_PING_ALL_VFS, 0);
+ mutex_lock(&qm->mailbox_lock);
+ /* PF sends command to all VFs by mailbox */
+ ret = qm_mb_nolock(qm, &mailbox);
+ if (ret) {
+ dev_err(dev, "failed to send command to VFs!\n");
+ mutex_unlock(&qm->mailbox_lock);
+ return ret;
+ }
+
+ qm_trigger_vf_interrupt(qm, QM_IFC_SEND_ALL_VFS);
+ while (true) {
+ msleep(QM_WAIT_DST_ACK);
+ val = readq(qm->io_base + QM_IFC_READY_STATUS);
+ /* If all VFs acked, PF notifies VFs successfully. */
+ if (!(val & GENMASK(vfs_num, 1))) {
+ mutex_unlock(&qm->mailbox_lock);
+ return 0;
+ }
+
+ if (++cnt > QM_MAX_PF_WAIT_COUNT)
+ break;
+ }
+
+ mutex_unlock(&qm->mailbox_lock);
+
+ /* Check which vf respond timeout. */
+ for (i = 1; i <= vfs_num; i++) {
+ if (val & BIT(i))
+ dev_err(dev, "failed to get response from VF(%u)!\n", i);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int qm_ping_pf(struct hisi_qm *qm, u64 cmd)
+{
+ struct qm_mailbox mailbox;
+ int cnt = 0;
+ u32 val;
+ int ret;
+
+ qm_mb_pre_init(&mailbox, QM_MB_CMD_SRC, cmd, 0, 0);
+ mutex_lock(&qm->mailbox_lock);
+ ret = qm_mb_nolock(qm, &mailbox);
+ if (ret) {
+ dev_err(&qm->pdev->dev, "failed to send command to PF!\n");
+ goto unlock;
+ }
+
+ qm_trigger_pf_interrupt(qm);
+ /* Waiting for PF response */
+ while (true) {
+ msleep(QM_WAIT_DST_ACK);
+ val = readl(qm->io_base + QM_IFC_INT_SET_V);
+ if (!(val & QM_IFC_INT_STATUS_MASK))
+ break;
+
+ if (++cnt > QM_MAX_VF_WAIT_COUNT) {
+ ret = -ETIMEDOUT;
+ break;
+ }
+ }
+
+unlock:
+ mutex_unlock(&qm->mailbox_lock);
+ return ret;
+}
+
+static int qm_stop_qp(struct hisi_qp *qp)
+{
+ return hisi_qm_mb(qp->qm, QM_MB_CMD_STOP_QP, 0, qp->qp_id, 0);
+}
+
+static int qm_set_msi(struct hisi_qm *qm, bool set)
+{
+ struct pci_dev *pdev = qm->pdev;
+
+ if (set) {
+ pci_write_config_dword(pdev, pdev->msi_cap + PCI_MSI_MASK_64,
+ 0);
+ } else {
+ pci_write_config_dword(pdev, pdev->msi_cap + PCI_MSI_MASK_64,
+ ACC_PEH_MSI_DISABLE);
+ if (qm->err_status.is_qm_ecc_mbit ||
+ qm->err_status.is_dev_ecc_mbit)
+ return 0;
+
+ mdelay(1);
+ if (readl(qm->io_base + QM_PEH_DFX_INFO0))
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+static void qm_wait_msi_finish(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ u32 cmd = ~0;
+ int cnt = 0;
+ u32 val;
+ int ret;
+
+ while (true) {
+ pci_read_config_dword(pdev, pdev->msi_cap +
+ PCI_MSI_PENDING_64, &cmd);
+ if (!cmd)
+ break;
+
+ if (++cnt > MAX_WAIT_COUNTS) {
+ pci_warn(pdev, "failed to empty MSI PENDING!\n");
+ break;
+ }
+
+ udelay(1);
+ }
+
+ ret = readl_relaxed_poll_timeout(qm->io_base + QM_PEH_DFX_INFO0,
+ val, !(val & QM_PEH_DFX_MASK),
+ POLL_PERIOD, POLL_TIMEOUT);
+ if (ret)
+ pci_warn(pdev, "failed to empty PEH MSI!\n");
+
+ ret = readl_relaxed_poll_timeout(qm->io_base + QM_PEH_DFX_INFO1,
+ val, !(val & QM_PEH_MSI_FINISH_MASK),
+ POLL_PERIOD, POLL_TIMEOUT);
+ if (ret)
+ pci_warn(pdev, "failed to finish MSI operation!\n");
+}
+
+static int qm_set_msi_v3(struct hisi_qm *qm, bool set)
+{
+ struct pci_dev *pdev = qm->pdev;
+ int ret = -ETIMEDOUT;
+ u32 cmd, i;
+
+ pci_read_config_dword(pdev, pdev->msi_cap, &cmd);
+ if (set)
+ cmd |= QM_MSI_CAP_ENABLE;
+ else
+ cmd &= ~QM_MSI_CAP_ENABLE;
+
+ pci_write_config_dword(pdev, pdev->msi_cap, cmd);
+ if (set) {
+ for (i = 0; i < MAX_WAIT_COUNTS; i++) {
+ pci_read_config_dword(pdev, pdev->msi_cap, &cmd);
+ if (cmd & QM_MSI_CAP_ENABLE)
+ return 0;
+
+ udelay(1);
+ }
+ } else {
+ udelay(WAIT_PERIOD_US_MIN);
+ qm_wait_msi_finish(qm);
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static const struct hisi_qm_hw_ops qm_hw_ops_v1 = {
+ .qm_db = qm_db_v1,
+ .hw_error_init = qm_hw_error_init_v1,
+ .set_msi = qm_set_msi,
+};
+
+static const struct hisi_qm_hw_ops qm_hw_ops_v2 = {
+ .get_vft = qm_get_vft_v2,
+ .qm_db = qm_db_v2,
+ .hw_error_init = qm_hw_error_init_v2,
+ .hw_error_uninit = qm_hw_error_uninit_v2,
+ .hw_error_handle = qm_hw_error_handle_v2,
+ .set_msi = qm_set_msi,
+};
+
+static const struct hisi_qm_hw_ops qm_hw_ops_v3 = {
+ .get_vft = qm_get_vft_v2,
+ .qm_db = qm_db_v2,
+ .hw_error_init = qm_hw_error_init_v3,
+ .hw_error_uninit = qm_hw_error_uninit_v3,
+ .hw_error_handle = qm_hw_error_handle_v2,
+ .set_msi = qm_set_msi_v3,
+};
+
+static void *qm_get_avail_sqe(struct hisi_qp *qp)
+{
+ struct hisi_qp_status *qp_status = &qp->qp_status;
+ u16 sq_tail = qp_status->sq_tail;
+
+ if (unlikely(atomic_read(&qp->qp_status.used) == qp->sq_depth - 1))
+ return NULL;
+
+ return qp->sqe + sq_tail * qp->qm->sqe_size;
+}
+
+static void hisi_qm_unset_hw_reset(struct hisi_qp *qp)
+{
+ u64 *addr;
+
+ /* Use last 64 bits of DUS to reset status. */
+ addr = (u64 *)(qp->qdma.va + qp->qdma.size) - QM_RESET_STOP_TX_OFFSET;
+ *addr = 0;
+}
+
+static struct hisi_qp *qm_create_qp_nolock(struct hisi_qm *qm, u8 alg_type)
+{
+ struct device *dev = &qm->pdev->dev;
+ struct hisi_qp *qp;
+ int qp_id;
+
+ if (!qm_qp_avail_state(qm, NULL, QP_INIT))
+ return ERR_PTR(-EPERM);
+
+ if (qm->qp_in_used == qm->qp_num) {
+ dev_info_ratelimited(dev, "All %u queues of QM are busy!\n",
+ qm->qp_num);
+ atomic64_inc(&qm->debug.dfx.create_qp_err_cnt);
+ return ERR_PTR(-EBUSY);
+ }
+
+ qp_id = idr_alloc_cyclic(&qm->qp_idr, NULL, 0, qm->qp_num, GFP_ATOMIC);
+ if (qp_id < 0) {
+ dev_info_ratelimited(dev, "All %u queues of QM are busy!\n",
+ qm->qp_num);
+ atomic64_inc(&qm->debug.dfx.create_qp_err_cnt);
+ return ERR_PTR(-EBUSY);
+ }
+
+ qp = &qm->qp_array[qp_id];
+ hisi_qm_unset_hw_reset(qp);
+ memset(qp->cqe, 0, sizeof(struct qm_cqe) * qp->cq_depth);
+
+ qp->event_cb = NULL;
+ qp->req_cb = NULL;
+ qp->qp_id = qp_id;
+ qp->alg_type = alg_type;
+ qp->is_in_kernel = true;
+ qm->qp_in_used++;
+ atomic_set(&qp->qp_status.flags, QP_INIT);
+
+ return qp;
+}
+
+/**
+ * hisi_qm_create_qp() - Create a queue pair from qm.
+ * @qm: The qm we create a qp from.
+ * @alg_type: Accelerator specific algorithm type in sqc.
+ *
+ * return created qp, -EBUSY if all qps in qm allocated, -ENOMEM if allocating
+ * qp memory fails.
+ */
+static struct hisi_qp *hisi_qm_create_qp(struct hisi_qm *qm, u8 alg_type)
+{
+ struct hisi_qp *qp;
+ int ret;
+
+ ret = qm_pm_get_sync(qm);
+ if (ret)
+ return ERR_PTR(ret);
+
+ down_write(&qm->qps_lock);
+ qp = qm_create_qp_nolock(qm, alg_type);
+ up_write(&qm->qps_lock);
+
+ if (IS_ERR(qp))
+ qm_pm_put_sync(qm);
+
+ return qp;
+}
+
+/**
+ * hisi_qm_release_qp() - Release a qp back to its qm.
+ * @qp: The qp we want to release.
+ *
+ * This function releases the resource of a qp.
+ */
+static void hisi_qm_release_qp(struct hisi_qp *qp)
+{
+ struct hisi_qm *qm = qp->qm;
+
+ down_write(&qm->qps_lock);
+
+ if (!qm_qp_avail_state(qm, qp, QP_CLOSE)) {
+ up_write(&qm->qps_lock);
+ return;
+ }
+
+ qm->qp_in_used--;
+ idr_remove(&qm->qp_idr, qp->qp_id);
+
+ up_write(&qm->qps_lock);
+
+ qm_pm_put_sync(qm);
+}
+
+static int qm_sq_ctx_cfg(struct hisi_qp *qp, int qp_id, u32 pasid)
+{
+ struct hisi_qm *qm = qp->qm;
+ struct device *dev = &qm->pdev->dev;
+ enum qm_hw_ver ver = qm->ver;
+ struct qm_sqc *sqc;
+ dma_addr_t sqc_dma;
+ int ret;
+
+ sqc = kzalloc(sizeof(struct qm_sqc), GFP_KERNEL);
+ if (!sqc)
+ return -ENOMEM;
+
+ INIT_QC_COMMON(sqc, qp->sqe_dma, pasid);
+ if (ver == QM_HW_V1) {
+ sqc->dw3 = cpu_to_le32(QM_MK_SQC_DW3_V1(0, 0, 0, qm->sqe_size));
+ sqc->w8 = cpu_to_le16(qp->sq_depth - 1);
+ } else {
+ sqc->dw3 = cpu_to_le32(QM_MK_SQC_DW3_V2(qm->sqe_size, qp->sq_depth));
+ sqc->w8 = 0; /* rand_qc */
+ }
+ sqc->cq_num = cpu_to_le16(qp_id);
+ sqc->w13 = cpu_to_le16(QM_MK_SQC_W13(0, 1, qp->alg_type));
+
+ if (ver >= QM_HW_V3 && qm->use_sva && !qp->is_in_kernel)
+ sqc->w11 = cpu_to_le16(QM_QC_PASID_ENABLE <<
+ QM_QC_PASID_ENABLE_SHIFT);
+
+ sqc_dma = dma_map_single(dev, sqc, sizeof(struct qm_sqc),
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, sqc_dma)) {
+ kfree(sqc);
+ return -ENOMEM;
+ }
+
+ ret = hisi_qm_mb(qm, QM_MB_CMD_SQC, sqc_dma, qp_id, 0);
+ dma_unmap_single(dev, sqc_dma, sizeof(struct qm_sqc), DMA_TO_DEVICE);
+ kfree(sqc);
+
+ return ret;
+}
+
+static int qm_cq_ctx_cfg(struct hisi_qp *qp, int qp_id, u32 pasid)
+{
+ struct hisi_qm *qm = qp->qm;
+ struct device *dev = &qm->pdev->dev;
+ enum qm_hw_ver ver = qm->ver;
+ struct qm_cqc *cqc;
+ dma_addr_t cqc_dma;
+ int ret;
+
+ cqc = kzalloc(sizeof(struct qm_cqc), GFP_KERNEL);
+ if (!cqc)
+ return -ENOMEM;
+
+ INIT_QC_COMMON(cqc, qp->cqe_dma, pasid);
+ if (ver == QM_HW_V1) {
+ cqc->dw3 = cpu_to_le32(QM_MK_CQC_DW3_V1(0, 0, 0,
+ QM_QC_CQE_SIZE));
+ cqc->w8 = cpu_to_le16(qp->cq_depth - 1);
+ } else {
+ cqc->dw3 = cpu_to_le32(QM_MK_CQC_DW3_V2(QM_QC_CQE_SIZE, qp->cq_depth));
+ cqc->w8 = 0; /* rand_qc */
+ }
+ cqc->dw6 = cpu_to_le32(1 << QM_CQ_PHASE_SHIFT | 1 << QM_CQ_FLAG_SHIFT);
+
+ if (ver >= QM_HW_V3 && qm->use_sva && !qp->is_in_kernel)
+ cqc->w11 = cpu_to_le16(QM_QC_PASID_ENABLE);
+
+ cqc_dma = dma_map_single(dev, cqc, sizeof(struct qm_cqc),
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, cqc_dma)) {
+ kfree(cqc);
+ return -ENOMEM;
+ }
+
+ ret = hisi_qm_mb(qm, QM_MB_CMD_CQC, cqc_dma, qp_id, 0);
+ dma_unmap_single(dev, cqc_dma, sizeof(struct qm_cqc), DMA_TO_DEVICE);
+ kfree(cqc);
+
+ return ret;
+}
+
+static int qm_qp_ctx_cfg(struct hisi_qp *qp, int qp_id, u32 pasid)
+{
+ int ret;
+
+ qm_init_qp_status(qp);
+
+ ret = qm_sq_ctx_cfg(qp, qp_id, pasid);
+ if (ret)
+ return ret;
+
+ return qm_cq_ctx_cfg(qp, qp_id, pasid);
+}
+
+static int qm_start_qp_nolock(struct hisi_qp *qp, unsigned long arg)
+{
+ struct hisi_qm *qm = qp->qm;
+ struct device *dev = &qm->pdev->dev;
+ int qp_id = qp->qp_id;
+ u32 pasid = arg;
+ int ret;
+
+ if (!qm_qp_avail_state(qm, qp, QP_START))
+ return -EPERM;
+
+ ret = qm_qp_ctx_cfg(qp, qp_id, pasid);
+ if (ret)
+ return ret;
+
+ atomic_set(&qp->qp_status.flags, QP_START);
+ dev_dbg(dev, "queue %d started\n", qp_id);
+
+ return 0;
+}
+
+/**
+ * hisi_qm_start_qp() - Start a qp into running.
+ * @qp: The qp we want to start to run.
+ * @arg: Accelerator specific argument.
+ *
+ * After this function, qp can receive request from user. Return 0 if
+ * successful, Return -EBUSY if failed.
+ */
+int hisi_qm_start_qp(struct hisi_qp *qp, unsigned long arg)
+{
+ struct hisi_qm *qm = qp->qm;
+ int ret;
+
+ down_write(&qm->qps_lock);
+ ret = qm_start_qp_nolock(qp, arg);
+ up_write(&qm->qps_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_start_qp);
+
+/**
+ * qp_stop_fail_cb() - call request cb.
+ * @qp: stopped failed qp.
+ *
+ * Callback function should be called whether task completed or not.
+ */
+static void qp_stop_fail_cb(struct hisi_qp *qp)
+{
+ int qp_used = atomic_read(&qp->qp_status.used);
+ u16 cur_tail = qp->qp_status.sq_tail;
+ u16 sq_depth = qp->sq_depth;
+ u16 cur_head = (cur_tail + sq_depth - qp_used) % sq_depth;
+ struct hisi_qm *qm = qp->qm;
+ u16 pos;
+ int i;
+
+ for (i = 0; i < qp_used; i++) {
+ pos = (i + cur_head) % sq_depth;
+ qp->req_cb(qp, qp->sqe + (u32)(qm->sqe_size * pos));
+ atomic_dec(&qp->qp_status.used);
+ }
+}
+
+/**
+ * qm_drain_qp() - Drain a qp.
+ * @qp: The qp we want to drain.
+ *
+ * Determine whether the queue is cleared by judging the tail pointers of
+ * sq and cq.
+ */
+static int qm_drain_qp(struct hisi_qp *qp)
+{
+ size_t size = sizeof(struct qm_sqc) + sizeof(struct qm_cqc);
+ struct hisi_qm *qm = qp->qm;
+ struct device *dev = &qm->pdev->dev;
+ struct qm_sqc *sqc;
+ struct qm_cqc *cqc;
+ dma_addr_t dma_addr;
+ int ret = 0, i = 0;
+ void *addr;
+
+ /* No need to judge if master OOO is blocked. */
+ if (qm_check_dev_error(qm))
+ return 0;
+
+ /* Kunpeng930 supports drain qp by device */
+ if (test_bit(QM_SUPPORT_STOP_QP, &qm->caps)) {
+ ret = qm_stop_qp(qp);
+ if (ret)
+ dev_err(dev, "Failed to stop qp(%u)!\n", qp->qp_id);
+ return ret;
+ }
+
+ addr = hisi_qm_ctx_alloc(qm, size, &dma_addr);
+ if (IS_ERR(addr)) {
+ dev_err(dev, "Failed to alloc ctx for sqc and cqc!\n");
+ return -ENOMEM;
+ }
+
+ while (++i) {
+ ret = qm_dump_sqc_raw(qm, dma_addr, qp->qp_id);
+ if (ret) {
+ dev_err_ratelimited(dev, "Failed to dump sqc!\n");
+ break;
+ }
+ sqc = addr;
+
+ ret = qm_dump_cqc_raw(qm, (dma_addr + sizeof(struct qm_sqc)),
+ qp->qp_id);
+ if (ret) {
+ dev_err_ratelimited(dev, "Failed to dump cqc!\n");
+ break;
+ }
+ cqc = addr + sizeof(struct qm_sqc);
+
+ if ((sqc->tail == cqc->tail) &&
+ (QM_SQ_TAIL_IDX(sqc) == QM_CQ_TAIL_IDX(cqc)))
+ break;
+
+ if (i == MAX_WAIT_COUNTS) {
+ dev_err(dev, "Fail to empty queue %u!\n", qp->qp_id);
+ ret = -EBUSY;
+ break;
+ }
+
+ usleep_range(WAIT_PERIOD_US_MIN, WAIT_PERIOD_US_MAX);
+ }
+
+ hisi_qm_ctx_free(qm, size, addr, &dma_addr);
+
+ return ret;
+}
+
+static int qm_stop_qp_nolock(struct hisi_qp *qp)
+{
+ struct device *dev = &qp->qm->pdev->dev;
+ int ret;
+
+ /*
+ * It is allowed to stop and release qp when reset, If the qp is
+ * stopped when reset but still want to be released then, the
+ * is_resetting flag should be set negative so that this qp will not
+ * be restarted after reset.
+ */
+ if (atomic_read(&qp->qp_status.flags) == QP_STOP) {
+ qp->is_resetting = false;
+ return 0;
+ }
+
+ if (!qm_qp_avail_state(qp->qm, qp, QP_STOP))
+ return -EPERM;
+
+ atomic_set(&qp->qp_status.flags, QP_STOP);
+
+ ret = qm_drain_qp(qp);
+ if (ret)
+ dev_err(dev, "Failed to drain out data for stopping!\n");
+
+
+ flush_workqueue(qp->qm->wq);
+ if (unlikely(qp->is_resetting && atomic_read(&qp->qp_status.used)))
+ qp_stop_fail_cb(qp);
+
+ dev_dbg(dev, "stop queue %u!", qp->qp_id);
+
+ return 0;
+}
+
+/**
+ * hisi_qm_stop_qp() - Stop a qp in qm.
+ * @qp: The qp we want to stop.
+ *
+ * This function is reverse of hisi_qm_start_qp. Return 0 if successful.
+ */
+int hisi_qm_stop_qp(struct hisi_qp *qp)
+{
+ int ret;
+
+ down_write(&qp->qm->qps_lock);
+ ret = qm_stop_qp_nolock(qp);
+ up_write(&qp->qm->qps_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_stop_qp);
+
+/**
+ * hisi_qp_send() - Queue up a task in the hardware queue.
+ * @qp: The qp in which to put the message.
+ * @msg: The message.
+ *
+ * This function will return -EBUSY if qp is currently full, and -EAGAIN
+ * if qp related qm is resetting.
+ *
+ * Note: This function may run with qm_irq_thread and ACC reset at same time.
+ * It has no race with qm_irq_thread. However, during hisi_qp_send, ACC
+ * reset may happen, we have no lock here considering performance. This
+ * causes current qm_db sending fail or can not receive sended sqe. QM
+ * sync/async receive function should handle the error sqe. ACC reset
+ * done function should clear used sqe to 0.
+ */
+int hisi_qp_send(struct hisi_qp *qp, const void *msg)
+{
+ struct hisi_qp_status *qp_status = &qp->qp_status;
+ u16 sq_tail = qp_status->sq_tail;
+ u16 sq_tail_next = (sq_tail + 1) % qp->sq_depth;
+ void *sqe = qm_get_avail_sqe(qp);
+
+ if (unlikely(atomic_read(&qp->qp_status.flags) == QP_STOP ||
+ atomic_read(&qp->qm->status.flags) == QM_STOP ||
+ qp->is_resetting)) {
+ dev_info_ratelimited(&qp->qm->pdev->dev, "QP is stopped or resetting\n");
+ return -EAGAIN;
+ }
+
+ if (!sqe)
+ return -EBUSY;
+
+ memcpy(sqe, msg, qp->qm->sqe_size);
+
+ qm_db(qp->qm, qp->qp_id, QM_DOORBELL_CMD_SQ, sq_tail_next, 0);
+ atomic_inc(&qp->qp_status.used);
+ qp_status->sq_tail = sq_tail_next;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(hisi_qp_send);
+
+static void hisi_qm_cache_wb(struct hisi_qm *qm)
+{
+ unsigned int val;
+
+ if (qm->ver == QM_HW_V1)
+ return;
+
+ writel(0x1, qm->io_base + QM_CACHE_WB_START);
+ if (readl_relaxed_poll_timeout(qm->io_base + QM_CACHE_WB_DONE,
+ val, val & BIT(0), POLL_PERIOD,
+ POLL_TIMEOUT))
+ dev_err(&qm->pdev->dev, "QM writeback sqc cache fail!\n");
+}
+
+static void qm_qp_event_notifier(struct hisi_qp *qp)
+{
+ wake_up_interruptible(&qp->uacce_q->wait);
+}
+
+ /* This function returns free number of qp in qm. */
+static int hisi_qm_get_available_instances(struct uacce_device *uacce)
+{
+ struct hisi_qm *qm = uacce->priv;
+ int ret;
+
+ down_read(&qm->qps_lock);
+ ret = qm->qp_num - qm->qp_in_used;
+ up_read(&qm->qps_lock);
+
+ return ret;
+}
+
+static void hisi_qm_set_hw_reset(struct hisi_qm *qm, int offset)
+{
+ int i;
+
+ for (i = 0; i < qm->qp_num; i++)
+ qm_set_qp_disable(&qm->qp_array[i], offset);
+}
+
+static int hisi_qm_uacce_get_queue(struct uacce_device *uacce,
+ unsigned long arg,
+ struct uacce_queue *q)
+{
+ struct hisi_qm *qm = uacce->priv;
+ struct hisi_qp *qp;
+ u8 alg_type = 0;
+
+ qp = hisi_qm_create_qp(qm, alg_type);
+ if (IS_ERR(qp))
+ return PTR_ERR(qp);
+
+ q->priv = qp;
+ q->uacce = uacce;
+ qp->uacce_q = q;
+ qp->event_cb = qm_qp_event_notifier;
+ qp->pasid = arg;
+ qp->is_in_kernel = false;
+
+ return 0;
+}
+
+static void hisi_qm_uacce_put_queue(struct uacce_queue *q)
+{
+ struct hisi_qp *qp = q->priv;
+
+ hisi_qm_release_qp(qp);
+}
+
+/* map sq/cq/doorbell to user space */
+static int hisi_qm_uacce_mmap(struct uacce_queue *q,
+ struct vm_area_struct *vma,
+ struct uacce_qfile_region *qfr)
+{
+ struct hisi_qp *qp = q->priv;
+ struct hisi_qm *qm = qp->qm;
+ resource_size_t phys_base = qm->db_phys_base +
+ qp->qp_id * qm->db_interval;
+ size_t sz = vma->vm_end - vma->vm_start;
+ struct pci_dev *pdev = qm->pdev;
+ struct device *dev = &pdev->dev;
+ unsigned long vm_pgoff;
+ int ret;
+
+ switch (qfr->type) {
+ case UACCE_QFRT_MMIO:
+ if (qm->ver == QM_HW_V1) {
+ if (sz > PAGE_SIZE * QM_DOORBELL_PAGE_NR)
+ return -EINVAL;
+ } else if (!test_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps)) {
+ if (sz > PAGE_SIZE * (QM_DOORBELL_PAGE_NR +
+ QM_DOORBELL_SQ_CQ_BASE_V2 / PAGE_SIZE))
+ return -EINVAL;
+ } else {
+ if (sz > qm->db_interval)
+ return -EINVAL;
+ }
+
+ vma->vm_flags |= VM_IO;
+
+ return remap_pfn_range(vma, vma->vm_start,
+ phys_base >> PAGE_SHIFT,
+ sz, pgprot_noncached(vma->vm_page_prot));
+ case UACCE_QFRT_DUS:
+ if (sz != qp->qdma.size)
+ return -EINVAL;
+
+ /*
+ * dma_mmap_coherent() requires vm_pgoff as 0
+ * restore vm_pfoff to initial value for mmap()
+ */
+ vm_pgoff = vma->vm_pgoff;
+ vma->vm_pgoff = 0;
+ ret = dma_mmap_coherent(dev, vma, qp->qdma.va,
+ qp->qdma.dma, sz);
+ vma->vm_pgoff = vm_pgoff;
+ return ret;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+static int hisi_qm_uacce_start_queue(struct uacce_queue *q)
+{
+ struct hisi_qp *qp = q->priv;
+
+ return hisi_qm_start_qp(qp, qp->pasid);
+}
+
+static void hisi_qm_uacce_stop_queue(struct uacce_queue *q)
+{
+ hisi_qm_stop_qp(q->priv);
+}
+
+static int hisi_qm_is_q_updated(struct uacce_queue *q)
+{
+ struct hisi_qp *qp = q->priv;
+ struct qm_cqe *cqe = qp->cqe + qp->qp_status.cq_head;
+ int updated = 0;
+
+ while (QM_CQE_PHASE(cqe) == qp->qp_status.cqc_phase) {
+ /* make sure to read data from memory */
+ dma_rmb();
+ qm_cq_head_update(qp);
+ cqe = qp->cqe + qp->qp_status.cq_head;
+ updated = 1;
+ }
+
+ return updated;
+}
+
+static void qm_set_sqctype(struct uacce_queue *q, u16 type)
+{
+ struct hisi_qm *qm = q->uacce->priv;
+ struct hisi_qp *qp = q->priv;
+
+ down_write(&qm->qps_lock);
+ qp->alg_type = type;
+ up_write(&qm->qps_lock);
+}
+
+static long hisi_qm_uacce_ioctl(struct uacce_queue *q, unsigned int cmd,
+ unsigned long arg)
+{
+ struct hisi_qp *qp = q->priv;
+ struct hisi_qp_info qp_info;
+ struct hisi_qp_ctx qp_ctx;
+
+ if (cmd == UACCE_CMD_QM_SET_QP_CTX) {
+ if (copy_from_user(&qp_ctx, (void __user *)arg,
+ sizeof(struct hisi_qp_ctx)))
+ return -EFAULT;
+
+ if (qp_ctx.qc_type != 0 && qp_ctx.qc_type != 1)
+ return -EINVAL;
+
+ qm_set_sqctype(q, qp_ctx.qc_type);
+ qp_ctx.id = qp->qp_id;
+
+ if (copy_to_user((void __user *)arg, &qp_ctx,
+ sizeof(struct hisi_qp_ctx)))
+ return -EFAULT;
+
+ return 0;
+ } else if (cmd == UACCE_CMD_QM_SET_QP_INFO) {
+ if (copy_from_user(&qp_info, (void __user *)arg,
+ sizeof(struct hisi_qp_info)))
+ return -EFAULT;
+
+ qp_info.sqe_size = qp->qm->sqe_size;
+ qp_info.sq_depth = qp->sq_depth;
+ qp_info.cq_depth = qp->cq_depth;
+
+ if (copy_to_user((void __user *)arg, &qp_info,
+ sizeof(struct hisi_qp_info)))
+ return -EFAULT;
+
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static const struct uacce_ops uacce_qm_ops = {
+ .get_available_instances = hisi_qm_get_available_instances,
+ .get_queue = hisi_qm_uacce_get_queue,
+ .put_queue = hisi_qm_uacce_put_queue,
+ .start_queue = hisi_qm_uacce_start_queue,
+ .stop_queue = hisi_qm_uacce_stop_queue,
+ .mmap = hisi_qm_uacce_mmap,
+ .ioctl = hisi_qm_uacce_ioctl,
+ .is_q_updated = hisi_qm_is_q_updated,
+};
+
+static int qm_alloc_uacce(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ struct uacce_device *uacce;
+ unsigned long mmio_page_nr;
+ unsigned long dus_page_nr;
+ u16 sq_depth, cq_depth;
+ struct uacce_interface interface = {
+ .flags = UACCE_DEV_SVA,
+ .ops = &uacce_qm_ops,
+ };
+ int ret;
+
+ ret = strscpy(interface.name, dev_driver_string(&pdev->dev),
+ sizeof(interface.name));
+ if (ret < 0)
+ return -ENAMETOOLONG;
+
+ uacce = uacce_alloc(&pdev->dev, &interface);
+ if (IS_ERR(uacce))
+ return PTR_ERR(uacce);
+
+ if (uacce->flags & UACCE_DEV_SVA) {
+ qm->use_sva = true;
+ } else {
+ /* only consider sva case */
+ uacce_remove(uacce);
+ qm->uacce = NULL;
+ return -EINVAL;
+ }
+
+ uacce->is_vf = pdev->is_virtfn;
+ uacce->priv = qm;
+
+ if (qm->ver == QM_HW_V1)
+ uacce->api_ver = HISI_QM_API_VER_BASE;
+ else if (qm->ver == QM_HW_V2)
+ uacce->api_ver = HISI_QM_API_VER2_BASE;
+ else
+ uacce->api_ver = HISI_QM_API_VER3_BASE;
+
+ if (qm->ver == QM_HW_V1)
+ mmio_page_nr = QM_DOORBELL_PAGE_NR;
+ else if (!test_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps))
+ mmio_page_nr = QM_DOORBELL_PAGE_NR +
+ QM_DOORBELL_SQ_CQ_BASE_V2 / PAGE_SIZE;
+ else
+ mmio_page_nr = qm->db_interval / PAGE_SIZE;
+
+ qm_get_xqc_depth(qm, &sq_depth, &cq_depth, QM_QP_DEPTH_CAP);
+
+ /* Add one more page for device or qp status */
+ dus_page_nr = (PAGE_SIZE - 1 + qm->sqe_size * sq_depth +
+ sizeof(struct qm_cqe) * cq_depth + PAGE_SIZE) >>
+ PAGE_SHIFT;
+
+ uacce->qf_pg_num[UACCE_QFRT_MMIO] = mmio_page_nr;
+ uacce->qf_pg_num[UACCE_QFRT_DUS] = dus_page_nr;
+
+ qm->uacce = uacce;
+
+ return 0;
+}
+
+/**
+ * qm_frozen() - Try to froze QM to cut continuous queue request. If
+ * there is user on the QM, return failure without doing anything.
+ * @qm: The qm needed to be fronzen.
+ *
+ * This function frozes QM, then we can do SRIOV disabling.
+ */
+static int qm_frozen(struct hisi_qm *qm)
+{
+ if (test_bit(QM_DRIVER_REMOVING, &qm->misc_ctl))
+ return 0;
+
+ down_write(&qm->qps_lock);
+
+ if (!qm->qp_in_used) {
+ qm->qp_in_used = qm->qp_num;
+ up_write(&qm->qps_lock);
+ set_bit(QM_DRIVER_REMOVING, &qm->misc_ctl);
+ return 0;
+ }
+
+ up_write(&qm->qps_lock);
+
+ return -EBUSY;
+}
+
+static int qm_try_frozen_vfs(struct pci_dev *pdev,
+ struct hisi_qm_list *qm_list)
+{
+ struct hisi_qm *qm, *vf_qm;
+ struct pci_dev *dev;
+ int ret = 0;
+
+ if (!qm_list || !pdev)
+ return -EINVAL;
+
+ /* Try to frozen all the VFs as disable SRIOV */
+ mutex_lock(&qm_list->lock);
+ list_for_each_entry(qm, &qm_list->list, list) {
+ dev = qm->pdev;
+ if (dev == pdev)
+ continue;
+ if (pci_physfn(dev) == pdev) {
+ vf_qm = pci_get_drvdata(dev);
+ ret = qm_frozen(vf_qm);
+ if (ret)
+ goto frozen_fail;
+ }
+ }
+
+frozen_fail:
+ mutex_unlock(&qm_list->lock);
+
+ return ret;
+}
+
+/**
+ * hisi_qm_wait_task_finish() - Wait until the task is finished
+ * when removing the driver.
+ * @qm: The qm needed to wait for the task to finish.
+ * @qm_list: The list of all available devices.
+ */
+void hisi_qm_wait_task_finish(struct hisi_qm *qm, struct hisi_qm_list *qm_list)
+{
+ while (qm_frozen(qm) ||
+ ((qm->fun_type == QM_HW_PF) &&
+ qm_try_frozen_vfs(qm->pdev, qm_list))) {
+ msleep(WAIT_PERIOD);
+ }
+
+ while (test_bit(QM_RST_SCHED, &qm->misc_ctl) ||
+ test_bit(QM_RESETTING, &qm->misc_ctl))
+ msleep(WAIT_PERIOD);
+
+ udelay(REMOVE_WAIT_DELAY);
+}
+EXPORT_SYMBOL_GPL(hisi_qm_wait_task_finish);
+
+static void hisi_qp_memory_uninit(struct hisi_qm *qm, int num)
+{
+ struct device *dev = &qm->pdev->dev;
+ struct qm_dma *qdma;
+ int i;
+
+ for (i = num - 1; i >= 0; i--) {
+ qdma = &qm->qp_array[i].qdma;
+ dma_free_coherent(dev, qdma->size, qdma->va, qdma->dma);
+ kfree(qm->poll_data[i].qp_finish_id);
+ }
+
+ kfree(qm->poll_data);
+ kfree(qm->qp_array);
+}
+
+static int hisi_qp_memory_init(struct hisi_qm *qm, size_t dma_size, int id,
+ u16 sq_depth, u16 cq_depth)
+{
+ struct device *dev = &qm->pdev->dev;
+ size_t off = qm->sqe_size * sq_depth;
+ struct hisi_qp *qp;
+ int ret = -ENOMEM;
+
+ qm->poll_data[id].qp_finish_id = kcalloc(qm->qp_num, sizeof(u16),
+ GFP_KERNEL);
+ if (!qm->poll_data[id].qp_finish_id)
+ return -ENOMEM;
+
+ qp = &qm->qp_array[id];
+ qp->qdma.va = dma_alloc_coherent(dev, dma_size, &qp->qdma.dma,
+ GFP_KERNEL);
+ if (!qp->qdma.va)
+ goto err_free_qp_finish_id;
+
+ qp->sqe = qp->qdma.va;
+ qp->sqe_dma = qp->qdma.dma;
+ qp->cqe = qp->qdma.va + off;
+ qp->cqe_dma = qp->qdma.dma + off;
+ qp->qdma.size = dma_size;
+ qp->sq_depth = sq_depth;
+ qp->cq_depth = cq_depth;
+ qp->qm = qm;
+ qp->qp_id = id;
+
+ return 0;
+
+err_free_qp_finish_id:
+ kfree(qm->poll_data[id].qp_finish_id);
+ return ret;
+}
+
+static void hisi_qm_pre_init(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+
+ if (qm->ver == QM_HW_V1)
+ qm->ops = &qm_hw_ops_v1;
+ else if (qm->ver == QM_HW_V2)
+ qm->ops = &qm_hw_ops_v2;
+ else
+ qm->ops = &qm_hw_ops_v3;
+
+ pci_set_drvdata(pdev, qm);
+ mutex_init(&qm->mailbox_lock);
+ init_rwsem(&qm->qps_lock);
+ qm->qp_in_used = 0;
+ if (test_bit(QM_SUPPORT_RPM, &qm->caps)) {
+ if (!acpi_device_power_manageable(ACPI_COMPANION(&pdev->dev)))
+ dev_info(&pdev->dev, "_PS0 and _PR0 are not defined");
+ }
+}
+
+static void qm_cmd_uninit(struct hisi_qm *qm)
+{
+ u32 val;
+
+ if (!test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps))
+ return;
+
+ val = readl(qm->io_base + QM_IFC_INT_MASK);
+ val |= QM_IFC_INT_DISABLE;
+ writel(val, qm->io_base + QM_IFC_INT_MASK);
+}
+
+static void qm_cmd_init(struct hisi_qm *qm)
+{
+ u32 val;
+
+ if (!test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps))
+ return;
+
+ /* Clear communication interrupt source */
+ qm_clear_cmd_interrupt(qm, QM_IFC_INT_SOURCE_CLR);
+
+ /* Enable pf to vf communication reg. */
+ val = readl(qm->io_base + QM_IFC_INT_MASK);
+ val &= ~QM_IFC_INT_DISABLE;
+ writel(val, qm->io_base + QM_IFC_INT_MASK);
+}
+
+static void qm_put_pci_res(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+
+ if (test_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps))
+ iounmap(qm->db_io_base);
+
+ iounmap(qm->io_base);
+ pci_release_mem_regions(pdev);
+}
+
+static void hisi_qm_pci_uninit(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+
+ pci_free_irq_vectors(pdev);
+ qm_put_pci_res(qm);
+ pci_disable_device(pdev);
+}
+
+static void hisi_qm_set_state(struct hisi_qm *qm, u8 state)
+{
+ if (qm->ver > QM_HW_V2 && qm->fun_type == QM_HW_VF)
+ writel(state, qm->io_base + QM_VF_STATE);
+}
+
+static void hisi_qm_unint_work(struct hisi_qm *qm)
+{
+ destroy_workqueue(qm->wq);
+}
+
+static void hisi_qm_memory_uninit(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+
+ hisi_qp_memory_uninit(qm, qm->qp_num);
+ if (qm->qdma.va) {
+ hisi_qm_cache_wb(qm);
+ dma_free_coherent(dev, qm->qdma.size,
+ qm->qdma.va, qm->qdma.dma);
+ }
+
+ idr_destroy(&qm->qp_idr);
+
+ if (test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps))
+ kfree(qm->factor);
+}
+
+/**
+ * hisi_qm_uninit() - Uninitialize qm.
+ * @qm: The qm needed uninit.
+ *
+ * This function uninits qm related device resources.
+ */
+void hisi_qm_uninit(struct hisi_qm *qm)
+{
+ qm_cmd_uninit(qm);
+ hisi_qm_unint_work(qm);
+ down_write(&qm->qps_lock);
+
+ if (!qm_avail_state(qm, QM_CLOSE)) {
+ up_write(&qm->qps_lock);
+ return;
+ }
+
+ hisi_qm_memory_uninit(qm);
+ hisi_qm_set_state(qm, QM_NOT_READY);
+ up_write(&qm->qps_lock);
+
+ qm_irqs_unregister(qm);
+ hisi_qm_pci_uninit(qm);
+ if (qm->use_sva) {
+ uacce_remove(qm->uacce);
+ qm->uacce = NULL;
+ }
+}
+EXPORT_SYMBOL_GPL(hisi_qm_uninit);
+
+/**
+ * hisi_qm_get_vft() - Get vft from a qm.
+ * @qm: The qm we want to get its vft.
+ * @base: The base number of queue in vft.
+ * @number: The number of queues in vft.
+ *
+ * We can allocate multiple queues to a qm by configuring virtual function
+ * table. We get related configures by this function. Normally, we call this
+ * function in VF driver to get the queue information.
+ *
+ * qm hw v1 does not support this interface.
+ */
+static int hisi_qm_get_vft(struct hisi_qm *qm, u32 *base, u32 *number)
+{
+ if (!base || !number)
+ return -EINVAL;
+
+ if (!qm->ops->get_vft) {
+ dev_err(&qm->pdev->dev, "Don't support vft read!\n");
+ return -EINVAL;
+ }
+
+ return qm->ops->get_vft(qm, base, number);
+}
+
+/**
+ * hisi_qm_set_vft() - Set vft to a qm.
+ * @qm: The qm we want to set its vft.
+ * @fun_num: The function number.
+ * @base: The base number of queue in vft.
+ * @number: The number of queues in vft.
+ *
+ * This function is alway called in PF driver, it is used to assign queues
+ * among PF and VFs.
+ *
+ * Assign queues A~B to PF: hisi_qm_set_vft(qm, 0, A, B - A + 1)
+ * Assign queues A~B to VF: hisi_qm_set_vft(qm, 2, A, B - A + 1)
+ * (VF function number 0x2)
+ */
+static int hisi_qm_set_vft(struct hisi_qm *qm, u32 fun_num, u32 base,
+ u32 number)
+{
+ u32 max_q_num = qm->ctrl_qp_num;
+
+ if (base >= max_q_num || number > max_q_num ||
+ (base + number) > max_q_num)
+ return -EINVAL;
+
+ return qm_set_sqc_cqc_vft(qm, fun_num, base, number);
+}
+
+static void qm_init_eq_aeq_status(struct hisi_qm *qm)
+{
+ struct hisi_qm_status *status = &qm->status;
+
+ status->eq_head = 0;
+ status->aeq_head = 0;
+ status->eqc_phase = true;
+ status->aeqc_phase = true;
+}
+
+static void qm_enable_eq_aeq_interrupts(struct hisi_qm *qm)
+{
+ /* Clear eq/aeq interrupt source */
+ qm_db(qm, 0, QM_DOORBELL_CMD_AEQ, qm->status.aeq_head, 0);
+ qm_db(qm, 0, QM_DOORBELL_CMD_EQ, qm->status.eq_head, 0);
+
+ writel(0x0, qm->io_base + QM_VF_EQ_INT_MASK);
+ writel(0x0, qm->io_base + QM_VF_AEQ_INT_MASK);
+}
+
+static void qm_disable_eq_aeq_interrupts(struct hisi_qm *qm)
+{
+ writel(0x1, qm->io_base + QM_VF_EQ_INT_MASK);
+ writel(0x1, qm->io_base + QM_VF_AEQ_INT_MASK);
+}
+
+static int qm_eq_ctx_cfg(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ struct qm_eqc *eqc;
+ dma_addr_t eqc_dma;
+ int ret;
+
+ eqc = kzalloc(sizeof(struct qm_eqc), GFP_KERNEL);
+ if (!eqc)
+ return -ENOMEM;
+
+ eqc->base_l = cpu_to_le32(lower_32_bits(qm->eqe_dma));
+ eqc->base_h = cpu_to_le32(upper_32_bits(qm->eqe_dma));
+ if (qm->ver == QM_HW_V1)
+ eqc->dw3 = cpu_to_le32(QM_EQE_AEQE_SIZE);
+ eqc->dw6 = cpu_to_le32(((u32)qm->eq_depth - 1) | (1 << QM_EQC_PHASE_SHIFT));
+
+ eqc_dma = dma_map_single(dev, eqc, sizeof(struct qm_eqc),
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, eqc_dma)) {
+ kfree(eqc);
+ return -ENOMEM;
+ }
+
+ ret = hisi_qm_mb(qm, QM_MB_CMD_EQC, eqc_dma, 0, 0);
+ dma_unmap_single(dev, eqc_dma, sizeof(struct qm_eqc), DMA_TO_DEVICE);
+ kfree(eqc);
+
+ return ret;
+}
+
+static int qm_aeq_ctx_cfg(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ struct qm_aeqc *aeqc;
+ dma_addr_t aeqc_dma;
+ int ret;
+
+ aeqc = kzalloc(sizeof(struct qm_aeqc), GFP_KERNEL);
+ if (!aeqc)
+ return -ENOMEM;
+
+ aeqc->base_l = cpu_to_le32(lower_32_bits(qm->aeqe_dma));
+ aeqc->base_h = cpu_to_le32(upper_32_bits(qm->aeqe_dma));
+ aeqc->dw6 = cpu_to_le32(((u32)qm->aeq_depth - 1) | (1 << QM_EQC_PHASE_SHIFT));
+
+ aeqc_dma = dma_map_single(dev, aeqc, sizeof(struct qm_aeqc),
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, aeqc_dma)) {
+ kfree(aeqc);
+ return -ENOMEM;
+ }
+
+ ret = hisi_qm_mb(qm, QM_MB_CMD_AEQC, aeqc_dma, 0, 0);
+ dma_unmap_single(dev, aeqc_dma, sizeof(struct qm_aeqc), DMA_TO_DEVICE);
+ kfree(aeqc);
+
+ return ret;
+}
+
+static int qm_eq_aeq_ctx_cfg(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ int ret;
+
+ qm_init_eq_aeq_status(qm);
+
+ ret = qm_eq_ctx_cfg(qm);
+ if (ret) {
+ dev_err(dev, "Set eqc failed!\n");
+ return ret;
+ }
+
+ return qm_aeq_ctx_cfg(qm);
+}
+
+static int __hisi_qm_start(struct hisi_qm *qm)
+{
+ int ret;
+
+ WARN_ON(!qm->qdma.va);
+
+ if (qm->fun_type == QM_HW_PF) {
+ ret = hisi_qm_set_vft(qm, 0, qm->qp_base, qm->qp_num);
+ if (ret)
+ return ret;
+ }
+
+ ret = qm_eq_aeq_ctx_cfg(qm);
+ if (ret)
+ return ret;
+
+ ret = hisi_qm_mb(qm, QM_MB_CMD_SQC_BT, qm->sqc_dma, 0, 0);
+ if (ret)
+ return ret;
+
+ ret = hisi_qm_mb(qm, QM_MB_CMD_CQC_BT, qm->cqc_dma, 0, 0);
+ if (ret)
+ return ret;
+
+ qm_init_prefetch(qm);
+ qm_enable_eq_aeq_interrupts(qm);
+
+ return 0;
+}
+
+/**
+ * hisi_qm_start() - start qm
+ * @qm: The qm to be started.
+ *
+ * This function starts a qm, then we can allocate qp from this qm.
+ */
+int hisi_qm_start(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ int ret = 0;
+
+ down_write(&qm->qps_lock);
+
+ if (!qm_avail_state(qm, QM_START)) {
+ up_write(&qm->qps_lock);
+ return -EPERM;
+ }
+
+ dev_dbg(dev, "qm start with %u queue pairs\n", qm->qp_num);
+
+ if (!qm->qp_num) {
+ dev_err(dev, "qp_num should not be 0\n");
+ ret = -EINVAL;
+ goto err_unlock;
+ }
+
+ ret = __hisi_qm_start(qm);
+ if (!ret)
+ atomic_set(&qm->status.flags, QM_START);
+
+ hisi_qm_set_state(qm, QM_READY);
+err_unlock:
+ up_write(&qm->qps_lock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_start);
+
+static int qm_restart(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ struct hisi_qp *qp;
+ int ret, i;
+
+ ret = hisi_qm_start(qm);
+ if (ret < 0)
+ return ret;
+
+ down_write(&qm->qps_lock);
+ for (i = 0; i < qm->qp_num; i++) {
+ qp = &qm->qp_array[i];
+ if (atomic_read(&qp->qp_status.flags) == QP_STOP &&
+ qp->is_resetting == true) {
+ ret = qm_start_qp_nolock(qp, 0);
+ if (ret < 0) {
+ dev_err(dev, "Failed to start qp%d!\n", i);
+
+ up_write(&qm->qps_lock);
+ return ret;
+ }
+ qp->is_resetting = false;
+ }
+ }
+ up_write(&qm->qps_lock);
+
+ return 0;
+}
+
+/* Stop started qps in reset flow */
+static int qm_stop_started_qp(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ struct hisi_qp *qp;
+ int i, ret;
+
+ for (i = 0; i < qm->qp_num; i++) {
+ qp = &qm->qp_array[i];
+ if (qp && atomic_read(&qp->qp_status.flags) == QP_START) {
+ qp->is_resetting = true;
+ ret = qm_stop_qp_nolock(qp);
+ if (ret < 0) {
+ dev_err(dev, "Failed to stop qp%d!\n", i);
+ return ret;
+ }
+ }
+ }
+
+ return 0;
+}
+
+
+/**
+ * qm_clear_queues() - Clear all queues memory in a qm.
+ * @qm: The qm in which the queues will be cleared.
+ *
+ * This function clears all queues memory in a qm. Reset of accelerator can
+ * use this to clear queues.
+ */
+static void qm_clear_queues(struct hisi_qm *qm)
+{
+ struct hisi_qp *qp;
+ int i;
+
+ for (i = 0; i < qm->qp_num; i++) {
+ qp = &qm->qp_array[i];
+ if (qp->is_in_kernel && qp->is_resetting)
+ memset(qp->qdma.va, 0, qp->qdma.size);
+ }
+
+ memset(qm->qdma.va, 0, qm->qdma.size);
+}
+
+/**
+ * hisi_qm_stop() - Stop a qm.
+ * @qm: The qm which will be stopped.
+ * @r: The reason to stop qm.
+ *
+ * This function stops qm and its qps, then qm can not accept request.
+ * Related resources are not released at this state, we can use hisi_qm_start
+ * to let qm start again.
+ */
+int hisi_qm_stop(struct hisi_qm *qm, enum qm_stop_reason r)
+{
+ struct device *dev = &qm->pdev->dev;
+ int ret = 0;
+
+ down_write(&qm->qps_lock);
+
+ qm->status.stop_reason = r;
+ if (!qm_avail_state(qm, QM_STOP)) {
+ ret = -EPERM;
+ goto err_unlock;
+ }
+
+ if (qm->status.stop_reason == QM_SOFT_RESET ||
+ qm->status.stop_reason == QM_FLR) {
+ hisi_qm_set_hw_reset(qm, QM_RESET_STOP_TX_OFFSET);
+ ret = qm_stop_started_qp(qm);
+ if (ret < 0) {
+ dev_err(dev, "Failed to stop started qp!\n");
+ goto err_unlock;
+ }
+ hisi_qm_set_hw_reset(qm, QM_RESET_STOP_RX_OFFSET);
+ }
+
+ qm_disable_eq_aeq_interrupts(qm);
+ if (qm->fun_type == QM_HW_PF) {
+ ret = hisi_qm_set_vft(qm, 0, 0, 0);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set vft!\n");
+ ret = -EBUSY;
+ goto err_unlock;
+ }
+ }
+
+ qm_clear_queues(qm);
+ atomic_set(&qm->status.flags, QM_STOP);
+
+err_unlock:
+ up_write(&qm->qps_lock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_stop);
+
+static void qm_hw_error_init(struct hisi_qm *qm)
+{
+ if (!qm->ops->hw_error_init) {
+ dev_err(&qm->pdev->dev, "QM doesn't support hw error handling!\n");
+ return;
+ }
+
+ qm->ops->hw_error_init(qm);
+}
+
+static void qm_hw_error_uninit(struct hisi_qm *qm)
+{
+ if (!qm->ops->hw_error_uninit) {
+ dev_err(&qm->pdev->dev, "Unexpected QM hw error uninit!\n");
+ return;
+ }
+
+ qm->ops->hw_error_uninit(qm);
+}
+
+static enum acc_err_result qm_hw_error_handle(struct hisi_qm *qm)
+{
+ if (!qm->ops->hw_error_handle) {
+ dev_err(&qm->pdev->dev, "QM doesn't support hw error report!\n");
+ return ACC_ERR_NONE;
+ }
+
+ return qm->ops->hw_error_handle(qm);
+}
+
+/**
+ * hisi_qm_dev_err_init() - Initialize device error configuration.
+ * @qm: The qm for which we want to do error initialization.
+ *
+ * Initialize QM and device error related configuration.
+ */
+void hisi_qm_dev_err_init(struct hisi_qm *qm)
+{
+ if (qm->fun_type == QM_HW_VF)
+ return;
+
+ qm_hw_error_init(qm);
+
+ if (!qm->err_ini->hw_err_enable) {
+ dev_err(&qm->pdev->dev, "Device doesn't support hw error init!\n");
+ return;
+ }
+ qm->err_ini->hw_err_enable(qm);
+}
+EXPORT_SYMBOL_GPL(hisi_qm_dev_err_init);
+
+/**
+ * hisi_qm_dev_err_uninit() - Uninitialize device error configuration.
+ * @qm: The qm for which we want to do error uninitialization.
+ *
+ * Uninitialize QM and device error related configuration.
+ */
+void hisi_qm_dev_err_uninit(struct hisi_qm *qm)
+{
+ if (qm->fun_type == QM_HW_VF)
+ return;
+
+ qm_hw_error_uninit(qm);
+
+ if (!qm->err_ini->hw_err_disable) {
+ dev_err(&qm->pdev->dev, "Unexpected device hw error uninit!\n");
+ return;
+ }
+ qm->err_ini->hw_err_disable(qm);
+}
+EXPORT_SYMBOL_GPL(hisi_qm_dev_err_uninit);
+
+/**
+ * hisi_qm_free_qps() - free multiple queue pairs.
+ * @qps: The queue pairs need to be freed.
+ * @qp_num: The num of queue pairs.
+ */
+void hisi_qm_free_qps(struct hisi_qp **qps, int qp_num)
+{
+ int i;
+
+ if (!qps || qp_num <= 0)
+ return;
+
+ for (i = qp_num - 1; i >= 0; i--)
+ hisi_qm_release_qp(qps[i]);
+}
+EXPORT_SYMBOL_GPL(hisi_qm_free_qps);
+
+static void free_list(struct list_head *head)
+{
+ struct hisi_qm_resource *res, *tmp;
+
+ list_for_each_entry_safe(res, tmp, head, list) {
+ list_del(&res->list);
+ kfree(res);
+ }
+}
+
+static int hisi_qm_sort_devices(int node, struct list_head *head,
+ struct hisi_qm_list *qm_list)
+{
+ struct hisi_qm_resource *res, *tmp;
+ struct hisi_qm *qm;
+ struct list_head *n;
+ struct device *dev;
+ int dev_node = 0;
+
+ list_for_each_entry(qm, &qm_list->list, list) {
+ dev = &qm->pdev->dev;
+
+ if (IS_ENABLED(CONFIG_NUMA)) {
+ dev_node = dev_to_node(dev);
+ if (dev_node < 0)
+ dev_node = 0;
+ }
+
+ res = kzalloc(sizeof(*res), GFP_KERNEL);
+ if (!res)
+ return -ENOMEM;
+
+ res->qm = qm;
+ res->distance = node_distance(dev_node, node);
+ n = head;
+ list_for_each_entry(tmp, head, list) {
+ if (res->distance < tmp->distance) {
+ n = &tmp->list;
+ break;
+ }
+ }
+ list_add_tail(&res->list, n);
+ }
+
+ return 0;
+}
+
+/**
+ * hisi_qm_alloc_qps_node() - Create multiple queue pairs.
+ * @qm_list: The list of all available devices.
+ * @qp_num: The number of queue pairs need created.
+ * @alg_type: The algorithm type.
+ * @node: The numa node.
+ * @qps: The queue pairs need created.
+ *
+ * This function will sort all available device according to numa distance.
+ * Then try to create all queue pairs from one device, if all devices do
+ * not meet the requirements will return error.
+ */
+int hisi_qm_alloc_qps_node(struct hisi_qm_list *qm_list, int qp_num,
+ u8 alg_type, int node, struct hisi_qp **qps)
+{
+ struct hisi_qm_resource *tmp;
+ int ret = -ENODEV;
+ LIST_HEAD(head);
+ int i;
+
+ if (!qps || !qm_list || qp_num <= 0)
+ return -EINVAL;
+
+ mutex_lock(&qm_list->lock);
+ if (hisi_qm_sort_devices(node, &head, qm_list)) {
+ mutex_unlock(&qm_list->lock);
+ goto err;
+ }
+
+ list_for_each_entry(tmp, &head, list) {
+ for (i = 0; i < qp_num; i++) {
+ qps[i] = hisi_qm_create_qp(tmp->qm, alg_type);
+ if (IS_ERR(qps[i])) {
+ hisi_qm_free_qps(qps, i);
+ break;
+ }
+ }
+
+ if (i == qp_num) {
+ ret = 0;
+ break;
+ }
+ }
+
+ mutex_unlock(&qm_list->lock);
+ if (ret)
+ pr_info("Failed to create qps, node[%d], alg[%u], qp[%d]!\n",
+ node, alg_type, qp_num);
+
+err:
+ free_list(&head);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_alloc_qps_node);
+
+static int qm_vf_q_assign(struct hisi_qm *qm, u32 num_vfs)
+{
+ u32 remain_q_num, vfs_q_num, act_q_num, q_num, i, j;
+ u32 max_qp_num = qm->max_qp_num;
+ u32 q_base = qm->qp_num;
+ int ret;
+
+ if (!num_vfs)
+ return -EINVAL;
+
+ vfs_q_num = qm->ctrl_qp_num - qm->qp_num;
+
+ /* If vfs_q_num is less than num_vfs, return error. */
+ if (vfs_q_num < num_vfs)
+ return -EINVAL;
+
+ q_num = vfs_q_num / num_vfs;
+ remain_q_num = vfs_q_num % num_vfs;
+
+ for (i = num_vfs; i > 0; i--) {
+ /*
+ * if q_num + remain_q_num > max_qp_num in last vf, divide the
+ * remaining queues equally.
+ */
+ if (i == num_vfs && q_num + remain_q_num <= max_qp_num) {
+ act_q_num = q_num + remain_q_num;
+ remain_q_num = 0;
+ } else if (remain_q_num > 0) {
+ act_q_num = q_num + 1;
+ remain_q_num--;
+ } else {
+ act_q_num = q_num;
+ }
+
+ act_q_num = min_t(int, act_q_num, max_qp_num);
+ ret = hisi_qm_set_vft(qm, i, q_base, act_q_num);
+ if (ret) {
+ for (j = num_vfs; j > i; j--)
+ hisi_qm_set_vft(qm, j, 0, 0);
+ return ret;
+ }
+ q_base += act_q_num;
+ }
+
+ return 0;
+}
+
+static int qm_clear_vft_config(struct hisi_qm *qm)
+{
+ int ret;
+ u32 i;
+
+ for (i = 1; i <= qm->vfs_num; i++) {
+ ret = hisi_qm_set_vft(qm, i, 0, 0);
+ if (ret)
+ return ret;
+ }
+ qm->vfs_num = 0;
+
+ return 0;
+}
+
+static int qm_func_shaper_enable(struct hisi_qm *qm, u32 fun_index, u32 qos)
+{
+ struct device *dev = &qm->pdev->dev;
+ u32 ir = qos * QM_QOS_RATE;
+ int ret, total_vfs, i;
+
+ total_vfs = pci_sriov_get_totalvfs(qm->pdev);
+ if (fun_index > total_vfs)
+ return -EINVAL;
+
+ qm->factor[fun_index].func_qos = qos;
+
+ ret = qm_get_shaper_para(ir, &qm->factor[fun_index]);
+ if (ret) {
+ dev_err(dev, "failed to calculate shaper parameter!\n");
+ return -EINVAL;
+ }
+
+ for (i = ALG_TYPE_0; i <= ALG_TYPE_1; i++) {
+ /* The base number of queue reuse for different alg type */
+ ret = qm_set_vft_common(qm, SHAPER_VFT, fun_index, i, 1);
+ if (ret) {
+ dev_err(dev, "type: %d, failed to set shaper vft!\n", i);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static u32 qm_get_shaper_vft_qos(struct hisi_qm *qm, u32 fun_index)
+{
+ u64 cir_u = 0, cir_b = 0, cir_s = 0;
+ u64 shaper_vft, ir_calc, ir;
+ unsigned int val;
+ u32 error_rate;
+ int ret;
+
+ ret = readl_relaxed_poll_timeout(qm->io_base + QM_VFT_CFG_RDY, val,
+ val & BIT(0), POLL_PERIOD,
+ POLL_TIMEOUT);
+ if (ret)
+ return 0;
+
+ writel(0x1, qm->io_base + QM_VFT_CFG_OP_WR);
+ writel(SHAPER_VFT, qm->io_base + QM_VFT_CFG_TYPE);
+ writel(fun_index, qm->io_base + QM_VFT_CFG);
+
+ writel(0x0, qm->io_base + QM_VFT_CFG_RDY);
+ writel(0x1, qm->io_base + QM_VFT_CFG_OP_ENABLE);
+
+ ret = readl_relaxed_poll_timeout(qm->io_base + QM_VFT_CFG_RDY, val,
+ val & BIT(0), POLL_PERIOD,
+ POLL_TIMEOUT);
+ if (ret)
+ return 0;
+
+ shaper_vft = readl(qm->io_base + QM_VFT_CFG_DATA_L) |
+ ((u64)readl(qm->io_base + QM_VFT_CFG_DATA_H) << 32);
+
+ cir_b = shaper_vft & QM_SHAPER_CIR_B_MASK;
+ cir_u = shaper_vft & QM_SHAPER_CIR_U_MASK;
+ cir_u = cir_u >> QM_SHAPER_FACTOR_CIR_U_SHIFT;
+
+ cir_s = shaper_vft & QM_SHAPER_CIR_S_MASK;
+ cir_s = cir_s >> QM_SHAPER_FACTOR_CIR_S_SHIFT;
+
+ ir_calc = acc_shaper_para_calc(cir_b, cir_u, cir_s);
+
+ ir = qm->factor[fun_index].func_qos * QM_QOS_RATE;
+
+ error_rate = QM_QOS_EXPAND_RATE * (u32)abs(ir_calc - ir) / ir;
+ if (error_rate > QM_QOS_MIN_ERROR_RATE) {
+ pci_err(qm->pdev, "error_rate: %u, get function qos is error!\n", error_rate);
+ return 0;
+ }
+
+ return ir;
+}
+
+static void qm_vf_get_qos(struct hisi_qm *qm, u32 fun_num)
+{
+ struct device *dev = &qm->pdev->dev;
+ u64 mb_cmd;
+ u32 qos;
+ int ret;
+
+ qos = qm_get_shaper_vft_qos(qm, fun_num);
+ if (!qos) {
+ dev_err(dev, "function(%u) failed to get qos by PF!\n", fun_num);
+ return;
+ }
+
+ mb_cmd = QM_PF_SET_QOS | (u64)qos << QM_MB_CMD_DATA_SHIFT;
+ ret = qm_ping_single_vf(qm, mb_cmd, fun_num);
+ if (ret)
+ dev_err(dev, "failed to send cmd to VF(%u)!\n", fun_num);
+}
+
+static int qm_vf_read_qos(struct hisi_qm *qm)
+{
+ int cnt = 0;
+ int ret = -EINVAL;
+
+ /* reset mailbox qos val */
+ qm->mb_qos = 0;
+
+ /* vf ping pf to get function qos */
+ ret = qm_ping_pf(qm, QM_VF_GET_QOS);
+ if (ret) {
+ pci_err(qm->pdev, "failed to send cmd to PF to get qos!\n");
+ return ret;
+ }
+
+ while (true) {
+ msleep(QM_WAIT_DST_ACK);
+ if (qm->mb_qos)
+ break;
+
+ if (++cnt > QM_MAX_VF_WAIT_COUNT) {
+ pci_err(qm->pdev, "PF ping VF timeout!\n");
+ return -ETIMEDOUT;
+ }
+ }
+
+ return ret;
+}
+
+static ssize_t qm_algqos_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct hisi_qm *qm = filp->private_data;
+ char tbuf[QM_DBG_READ_LEN];
+ u32 qos_val, ir;
+ int ret;
+
+ ret = hisi_qm_get_dfx_access(qm);
+ if (ret)
+ return ret;
+
+ /* Mailbox and reset cannot be operated at the same time */
+ if (test_and_set_bit(QM_RESETTING, &qm->misc_ctl)) {
+ pci_err(qm->pdev, "dev resetting, read alg qos failed!\n");
+ ret = -EAGAIN;
+ goto err_put_dfx_access;
+ }
+
+ if (qm->fun_type == QM_HW_PF) {
+ ir = qm_get_shaper_vft_qos(qm, 0);
+ } else {
+ ret = qm_vf_read_qos(qm);
+ if (ret)
+ goto err_get_status;
+ ir = qm->mb_qos;
+ }
+
+ qos_val = ir / QM_QOS_RATE;
+ ret = scnprintf(tbuf, QM_DBG_READ_LEN, "%u\n", qos_val);
+
+ ret = simple_read_from_buffer(buf, count, pos, tbuf, ret);
+
+err_get_status:
+ clear_bit(QM_RESETTING, &qm->misc_ctl);
+err_put_dfx_access:
+ hisi_qm_put_dfx_access(qm);
+ return ret;
+}
+
+static ssize_t qm_qos_value_init(const char *buf, unsigned long *val)
+{
+ int buflen = strlen(buf);
+ int ret, i;
+
+ for (i = 0; i < buflen; i++) {
+ if (!isdigit(buf[i]))
+ return -EINVAL;
+ }
+
+ ret = sscanf(buf, "%lu", val);
+ if (ret != QM_QOS_VAL_NUM)
+ return -EINVAL;
+
+ return 0;
+}
+
+static ssize_t qm_get_qos_value(struct hisi_qm *qm, const char *buf,
+ unsigned long *val,
+ unsigned int *fun_index)
+{
+ char tbuf_bdf[QM_DBG_READ_LEN] = {0};
+ char val_buf[QM_DBG_READ_LEN] = {0};
+ u32 tmp1, device, function;
+ int ret, bus;
+
+ ret = sscanf(buf, "%s %s", tbuf_bdf, val_buf);
+ if (ret != QM_QOS_PARAM_NUM)
+ return -EINVAL;
+
+ ret = qm_qos_value_init(val_buf, val);
+ if (ret || *val == 0 || *val > QM_QOS_MAX_VAL) {
+ pci_err(qm->pdev, "input qos value is error, please set 1~1000!\n");
+ return -EINVAL;
+ }
+
+ ret = sscanf(tbuf_bdf, "%u:%x:%u.%u", &tmp1, &bus, &device, &function);
+ if (ret != QM_QOS_BDF_PARAM_NUM) {
+ pci_err(qm->pdev, "input pci bdf value is error!\n");
+ return -EINVAL;
+ }
+
+ *fun_index = PCI_DEVFN(device, function);
+
+ return 0;
+}
+
+static ssize_t qm_algqos_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct hisi_qm *qm = filp->private_data;
+ char tbuf[QM_DBG_READ_LEN];
+ unsigned int fun_index;
+ unsigned long val;
+ int len, ret;
+
+ if (qm->fun_type == QM_HW_VF)
+ return -EINVAL;
+
+ if (*pos != 0)
+ return 0;
+
+ if (count >= QM_DBG_READ_LEN)
+ return -ENOSPC;
+
+ len = simple_write_to_buffer(tbuf, QM_DBG_READ_LEN - 1, pos, buf, count);
+ if (len < 0)
+ return len;
+
+ tbuf[len] = '\0';
+ ret = qm_get_qos_value(qm, tbuf, &val, &fun_index);
+ if (ret)
+ return ret;
+
+ /* Mailbox and reset cannot be operated at the same time */
+ if (test_and_set_bit(QM_RESETTING, &qm->misc_ctl)) {
+ pci_err(qm->pdev, "dev resetting, write alg qos failed!\n");
+ return -EAGAIN;
+ }
+
+ ret = qm_pm_get_sync(qm);
+ if (ret) {
+ ret = -EINVAL;
+ goto err_get_status;
+ }
+
+ ret = qm_func_shaper_enable(qm, fun_index, val);
+ if (ret) {
+ pci_err(qm->pdev, "failed to enable function shaper!\n");
+ ret = -EINVAL;
+ goto err_put_sync;
+ }
+
+ pci_info(qm->pdev, "the qos value of function%u is set to %lu.\n",
+ fun_index, val);
+ ret = count;
+
+err_put_sync:
+ qm_pm_put_sync(qm);
+err_get_status:
+ clear_bit(QM_RESETTING, &qm->misc_ctl);
+ return ret;
+}
+
+static const struct file_operations qm_algqos_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = qm_algqos_read,
+ .write = qm_algqos_write,
+};
+
+/**
+ * hisi_qm_set_algqos_init() - Initialize function qos debugfs files.
+ * @qm: The qm for which we want to add debugfs files.
+ *
+ * Create function qos debugfs files, VF ping PF to get function qos.
+ */
+void hisi_qm_set_algqos_init(struct hisi_qm *qm)
+{
+ if (qm->fun_type == QM_HW_PF)
+ debugfs_create_file("alg_qos", 0644, qm->debug.debug_root,
+ qm, &qm_algqos_fops);
+ else if (test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps))
+ debugfs_create_file("alg_qos", 0444, qm->debug.debug_root,
+ qm, &qm_algqos_fops);
+}
+
+static void hisi_qm_init_vf_qos(struct hisi_qm *qm, int total_func)
+{
+ int i;
+
+ for (i = 1; i <= total_func; i++)
+ qm->factor[i].func_qos = QM_QOS_MAX_VAL;
+}
+
+/**
+ * hisi_qm_sriov_enable() - enable virtual functions
+ * @pdev: the PCIe device
+ * @max_vfs: the number of virtual functions to enable
+ *
+ * Returns the number of enabled VFs. If there are VFs enabled already or
+ * max_vfs is more than the total number of device can be enabled, returns
+ * failure.
+ */
+int hisi_qm_sriov_enable(struct pci_dev *pdev, int max_vfs)
+{
+ struct hisi_qm *qm = pci_get_drvdata(pdev);
+ int pre_existing_vfs, num_vfs, total_vfs, ret;
+
+ ret = qm_pm_get_sync(qm);
+ if (ret)
+ return ret;
+
+ total_vfs = pci_sriov_get_totalvfs(pdev);
+ pre_existing_vfs = pci_num_vf(pdev);
+ if (pre_existing_vfs) {
+ pci_err(pdev, "%d VFs already enabled. Please disable pre-enabled VFs!\n",
+ pre_existing_vfs);
+ goto err_put_sync;
+ }
+
+ if (max_vfs > total_vfs) {
+ pci_err(pdev, "%d VFs is more than total VFs %d!\n", max_vfs, total_vfs);
+ ret = -ERANGE;
+ goto err_put_sync;
+ }
+
+ num_vfs = max_vfs;
+
+ if (test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps))
+ hisi_qm_init_vf_qos(qm, num_vfs);
+
+ ret = qm_vf_q_assign(qm, num_vfs);
+ if (ret) {
+ pci_err(pdev, "Can't assign queues for VF!\n");
+ goto err_put_sync;
+ }
+
+ qm->vfs_num = num_vfs;
+
+ ret = pci_enable_sriov(pdev, num_vfs);
+ if (ret) {
+ pci_err(pdev, "Can't enable VF!\n");
+ qm_clear_vft_config(qm);
+ goto err_put_sync;
+ }
+
+ pci_info(pdev, "VF enabled, vfs_num(=%d)!\n", num_vfs);
+
+ return num_vfs;
+
+err_put_sync:
+ qm_pm_put_sync(qm);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_sriov_enable);
+
+/**
+ * hisi_qm_sriov_disable - disable virtual functions
+ * @pdev: the PCI device.
+ * @is_frozen: true when all the VFs are frozen.
+ *
+ * Return failure if there are VFs assigned already or VF is in used.
+ */
+int hisi_qm_sriov_disable(struct pci_dev *pdev, bool is_frozen)
+{
+ struct hisi_qm *qm = pci_get_drvdata(pdev);
+ int ret;
+
+ if (pci_vfs_assigned(pdev)) {
+ pci_err(pdev, "Failed to disable VFs as VFs are assigned!\n");
+ return -EPERM;
+ }
+
+ /* While VF is in used, SRIOV cannot be disabled. */
+ if (!is_frozen && qm_try_frozen_vfs(pdev, qm->qm_list)) {
+ pci_err(pdev, "Task is using its VF!\n");
+ return -EBUSY;
+ }
+
+ pci_disable_sriov(pdev);
+
+ ret = qm_clear_vft_config(qm);
+ if (ret)
+ return ret;
+
+ qm_pm_put_sync(qm);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_sriov_disable);
+
+/**
+ * hisi_qm_sriov_configure - configure the number of VFs
+ * @pdev: The PCI device
+ * @num_vfs: The number of VFs need enabled
+ *
+ * Enable SR-IOV according to num_vfs, 0 means disable.
+ */
+int hisi_qm_sriov_configure(struct pci_dev *pdev, int num_vfs)
+{
+ if (num_vfs == 0)
+ return hisi_qm_sriov_disable(pdev, false);
+ else
+ return hisi_qm_sriov_enable(pdev, num_vfs);
+}
+EXPORT_SYMBOL_GPL(hisi_qm_sriov_configure);
+
+static enum acc_err_result qm_dev_err_handle(struct hisi_qm *qm)
+{
+ u32 err_sts;
+
+ if (!qm->err_ini->get_dev_hw_err_status) {
+ dev_err(&qm->pdev->dev, "Device doesn't support get hw error status!\n");
+ return ACC_ERR_NONE;
+ }
+
+ /* get device hardware error status */
+ err_sts = qm->err_ini->get_dev_hw_err_status(qm);
+ if (err_sts) {
+ if (err_sts & qm->err_info.ecc_2bits_mask)
+ qm->err_status.is_dev_ecc_mbit = true;
+
+ if (qm->err_ini->log_dev_hw_err)
+ qm->err_ini->log_dev_hw_err(qm, err_sts);
+
+ if (err_sts & qm->err_info.dev_reset_mask)
+ return ACC_ERR_NEED_RESET;
+
+ if (qm->err_ini->clear_dev_hw_err_status)
+ qm->err_ini->clear_dev_hw_err_status(qm, err_sts);
+ }
+
+ return ACC_ERR_RECOVERED;
+}
+
+static enum acc_err_result qm_process_dev_error(struct hisi_qm *qm)
+{
+ enum acc_err_result qm_ret, dev_ret;
+
+ /* log qm error */
+ qm_ret = qm_hw_error_handle(qm);
+
+ /* log device error */
+ dev_ret = qm_dev_err_handle(qm);
+
+ return (qm_ret == ACC_ERR_NEED_RESET ||
+ dev_ret == ACC_ERR_NEED_RESET) ?
+ ACC_ERR_NEED_RESET : ACC_ERR_RECOVERED;
+}
+
+/**
+ * hisi_qm_dev_err_detected() - Get device and qm error status then log it.
+ * @pdev: The PCI device which need report error.
+ * @state: The connectivity between CPU and device.
+ *
+ * We register this function into PCIe AER handlers, It will report device or
+ * qm hardware error status when error occur.
+ */
+pci_ers_result_t hisi_qm_dev_err_detected(struct pci_dev *pdev,
+ pci_channel_state_t state)
+{
+ struct hisi_qm *qm = pci_get_drvdata(pdev);
+ enum acc_err_result ret;
+
+ if (pdev->is_virtfn)
+ return PCI_ERS_RESULT_NONE;
+
+ pci_info(pdev, "PCI error detected, state(=%u)!!\n", state);
+ if (state == pci_channel_io_perm_failure)
+ return PCI_ERS_RESULT_DISCONNECT;
+
+ ret = qm_process_dev_error(qm);
+ if (ret == ACC_ERR_NEED_RESET)
+ return PCI_ERS_RESULT_NEED_RESET;
+
+ return PCI_ERS_RESULT_RECOVERED;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_dev_err_detected);
+
+static int qm_check_req_recv(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ int ret;
+ u32 val;
+
+ if (qm->ver >= QM_HW_V3)
+ return 0;
+
+ writel(ACC_VENDOR_ID_VALUE, qm->io_base + QM_PEH_VENDOR_ID);
+ ret = readl_relaxed_poll_timeout(qm->io_base + QM_PEH_VENDOR_ID, val,
+ (val == ACC_VENDOR_ID_VALUE),
+ POLL_PERIOD, POLL_TIMEOUT);
+ if (ret) {
+ dev_err(&pdev->dev, "Fails to read QM reg!\n");
+ return ret;
+ }
+
+ writel(PCI_VENDOR_ID_HUAWEI, qm->io_base + QM_PEH_VENDOR_ID);
+ ret = readl_relaxed_poll_timeout(qm->io_base + QM_PEH_VENDOR_ID, val,
+ (val == PCI_VENDOR_ID_HUAWEI),
+ POLL_PERIOD, POLL_TIMEOUT);
+ if (ret)
+ dev_err(&pdev->dev, "Fails to read QM reg in the second time!\n");
+
+ return ret;
+}
+
+static int qm_set_pf_mse(struct hisi_qm *qm, bool set)
+{
+ struct pci_dev *pdev = qm->pdev;
+ u16 cmd;
+ int i;
+
+ pci_read_config_word(pdev, PCI_COMMAND, &cmd);
+ if (set)
+ cmd |= PCI_COMMAND_MEMORY;
+ else
+ cmd &= ~PCI_COMMAND_MEMORY;
+
+ pci_write_config_word(pdev, PCI_COMMAND, cmd);
+ for (i = 0; i < MAX_WAIT_COUNTS; i++) {
+ pci_read_config_word(pdev, PCI_COMMAND, &cmd);
+ if (set == ((cmd & PCI_COMMAND_MEMORY) >> 1))
+ return 0;
+
+ udelay(1);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int qm_set_vf_mse(struct hisi_qm *qm, bool set)
+{
+ struct pci_dev *pdev = qm->pdev;
+ u16 sriov_ctrl;
+ int pos;
+ int i;
+
+ pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
+ pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &sriov_ctrl);
+ if (set)
+ sriov_ctrl |= PCI_SRIOV_CTRL_MSE;
+ else
+ sriov_ctrl &= ~PCI_SRIOV_CTRL_MSE;
+ pci_write_config_word(pdev, pos + PCI_SRIOV_CTRL, sriov_ctrl);
+
+ for (i = 0; i < MAX_WAIT_COUNTS; i++) {
+ pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &sriov_ctrl);
+ if (set == (sriov_ctrl & PCI_SRIOV_CTRL_MSE) >>
+ ACC_PEH_SRIOV_CTRL_VF_MSE_SHIFT)
+ return 0;
+
+ udelay(1);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int qm_vf_reset_prepare(struct hisi_qm *qm,
+ enum qm_stop_reason stop_reason)
+{
+ struct hisi_qm_list *qm_list = qm->qm_list;
+ struct pci_dev *pdev = qm->pdev;
+ struct pci_dev *virtfn;
+ struct hisi_qm *vf_qm;
+ int ret = 0;
+
+ mutex_lock(&qm_list->lock);
+ list_for_each_entry(vf_qm, &qm_list->list, list) {
+ virtfn = vf_qm->pdev;
+ if (virtfn == pdev)
+ continue;
+
+ if (pci_physfn(virtfn) == pdev) {
+ /* save VFs PCIE BAR configuration */
+ pci_save_state(virtfn);
+
+ ret = hisi_qm_stop(vf_qm, stop_reason);
+ if (ret)
+ goto stop_fail;
+ }
+ }
+
+stop_fail:
+ mutex_unlock(&qm_list->lock);
+ return ret;
+}
+
+static int qm_try_stop_vfs(struct hisi_qm *qm, u64 cmd,
+ enum qm_stop_reason stop_reason)
+{
+ struct pci_dev *pdev = qm->pdev;
+ int ret;
+
+ if (!qm->vfs_num)
+ return 0;
+
+ /* Kunpeng930 supports to notify VFs to stop before PF reset */
+ if (test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) {
+ ret = qm_ping_all_vfs(qm, cmd);
+ if (ret)
+ pci_err(pdev, "failed to send cmd to all VFs before PF reset!\n");
+ } else {
+ ret = qm_vf_reset_prepare(qm, stop_reason);
+ if (ret)
+ pci_err(pdev, "failed to prepare reset, ret = %d.\n", ret);
+ }
+
+ return ret;
+}
+
+static int qm_controller_reset_prepare(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ int ret;
+
+ ret = qm_reset_prepare_ready(qm);
+ if (ret) {
+ pci_err(pdev, "Controller reset not ready!\n");
+ return ret;
+ }
+
+ /* PF obtains the information of VF by querying the register. */
+ qm_cmd_uninit(qm);
+
+ /* Whether VFs stop successfully, soft reset will continue. */
+ ret = qm_try_stop_vfs(qm, QM_PF_SRST_PREPARE, QM_SOFT_RESET);
+ if (ret)
+ pci_err(pdev, "failed to stop vfs by pf in soft reset.\n");
+
+ ret = hisi_qm_stop(qm, QM_SOFT_RESET);
+ if (ret) {
+ pci_err(pdev, "Fails to stop QM!\n");
+ qm_reset_bit_clear(qm);
+ return ret;
+ }
+
+ ret = qm_wait_vf_prepare_finish(qm);
+ if (ret)
+ pci_err(pdev, "failed to stop by vfs in soft reset!\n");
+
+ clear_bit(QM_RST_SCHED, &qm->misc_ctl);
+
+ return 0;
+}
+
+static void qm_dev_ecc_mbit_handle(struct hisi_qm *qm)
+{
+ u32 nfe_enb = 0;
+
+ /* Kunpeng930 hardware automatically close master ooo when NFE occurs */
+ if (qm->ver >= QM_HW_V3)
+ return;
+
+ if (!qm->err_status.is_dev_ecc_mbit &&
+ qm->err_status.is_qm_ecc_mbit &&
+ qm->err_ini->close_axi_master_ooo) {
+
+ qm->err_ini->close_axi_master_ooo(qm);
+
+ } else if (qm->err_status.is_dev_ecc_mbit &&
+ !qm->err_status.is_qm_ecc_mbit &&
+ !qm->err_ini->close_axi_master_ooo) {
+
+ nfe_enb = readl(qm->io_base + QM_RAS_NFE_ENABLE);
+ writel(nfe_enb & QM_RAS_NFE_MBIT_DISABLE,
+ qm->io_base + QM_RAS_NFE_ENABLE);
+ writel(QM_ECC_MBIT, qm->io_base + QM_ABNORMAL_INT_SET);
+ }
+}
+
+static int qm_soft_reset(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ int ret;
+ u32 val;
+
+ /* Ensure all doorbells and mailboxes received by QM */
+ ret = qm_check_req_recv(qm);
+ if (ret)
+ return ret;
+
+ if (qm->vfs_num) {
+ ret = qm_set_vf_mse(qm, false);
+ if (ret) {
+ pci_err(pdev, "Fails to disable vf MSE bit.\n");
+ return ret;
+ }
+ }
+
+ ret = qm->ops->set_msi(qm, false);
+ if (ret) {
+ pci_err(pdev, "Fails to disable PEH MSI bit.\n");
+ return ret;
+ }
+
+ qm_dev_ecc_mbit_handle(qm);
+
+ /* OOO register set and check */
+ writel(ACC_MASTER_GLOBAL_CTRL_SHUTDOWN,
+ qm->io_base + ACC_MASTER_GLOBAL_CTRL);
+
+ /* If bus lock, reset chip */
+ ret = readl_relaxed_poll_timeout(qm->io_base + ACC_MASTER_TRANS_RETURN,
+ val,
+ (val == ACC_MASTER_TRANS_RETURN_RW),
+ POLL_PERIOD, POLL_TIMEOUT);
+ if (ret) {
+ pci_emerg(pdev, "Bus lock! Please reset system.\n");
+ return ret;
+ }
+
+ if (qm->err_ini->close_sva_prefetch)
+ qm->err_ini->close_sva_prefetch(qm);
+
+ ret = qm_set_pf_mse(qm, false);
+ if (ret) {
+ pci_err(pdev, "Fails to disable pf MSE bit.\n");
+ return ret;
+ }
+
+ /* The reset related sub-control registers are not in PCI BAR */
+ if (ACPI_HANDLE(&pdev->dev)) {
+ unsigned long long value = 0;
+ acpi_status s;
+
+ s = acpi_evaluate_integer(ACPI_HANDLE(&pdev->dev),
+ qm->err_info.acpi_rst,
+ NULL, &value);
+ if (ACPI_FAILURE(s)) {
+ pci_err(pdev, "NO controller reset method!\n");
+ return -EIO;
+ }
+
+ if (value) {
+ pci_err(pdev, "Reset step %llu failed!\n", value);
+ return -EIO;
+ }
+ } else {
+ pci_err(pdev, "No reset method!\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int qm_vf_reset_done(struct hisi_qm *qm)
+{
+ struct hisi_qm_list *qm_list = qm->qm_list;
+ struct pci_dev *pdev = qm->pdev;
+ struct pci_dev *virtfn;
+ struct hisi_qm *vf_qm;
+ int ret = 0;
+
+ mutex_lock(&qm_list->lock);
+ list_for_each_entry(vf_qm, &qm_list->list, list) {
+ virtfn = vf_qm->pdev;
+ if (virtfn == pdev)
+ continue;
+
+ if (pci_physfn(virtfn) == pdev) {
+ /* enable VFs PCIE BAR configuration */
+ pci_restore_state(virtfn);
+
+ ret = qm_restart(vf_qm);
+ if (ret)
+ goto restart_fail;
+ }
+ }
+
+restart_fail:
+ mutex_unlock(&qm_list->lock);
+ return ret;
+}
+
+static int qm_try_start_vfs(struct hisi_qm *qm, enum qm_mb_cmd cmd)
+{
+ struct pci_dev *pdev = qm->pdev;
+ int ret;
+
+ if (!qm->vfs_num)
+ return 0;
+
+ ret = qm_vf_q_assign(qm, qm->vfs_num);
+ if (ret) {
+ pci_err(pdev, "failed to assign VFs, ret = %d.\n", ret);
+ return ret;
+ }
+
+ /* Kunpeng930 supports to notify VFs to start after PF reset. */
+ if (test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) {
+ ret = qm_ping_all_vfs(qm, cmd);
+ if (ret)
+ pci_warn(pdev, "failed to send cmd to all VFs after PF reset!\n");
+ } else {
+ ret = qm_vf_reset_done(qm);
+ if (ret)
+ pci_warn(pdev, "failed to start vfs, ret = %d.\n", ret);
+ }
+
+ return ret;
+}
+
+static int qm_dev_hw_init(struct hisi_qm *qm)
+{
+ return qm->err_ini->hw_init(qm);
+}
+
+static void qm_restart_prepare(struct hisi_qm *qm)
+{
+ u32 value;
+
+ if (qm->err_ini->open_sva_prefetch)
+ qm->err_ini->open_sva_prefetch(qm);
+
+ if (qm->ver >= QM_HW_V3)
+ return;
+
+ if (!qm->err_status.is_qm_ecc_mbit &&
+ !qm->err_status.is_dev_ecc_mbit)
+ return;
+
+ /* temporarily close the OOO port used for PEH to write out MSI */
+ value = readl(qm->io_base + ACC_AM_CFG_PORT_WR_EN);
+ writel(value & ~qm->err_info.msi_wr_port,
+ qm->io_base + ACC_AM_CFG_PORT_WR_EN);
+
+ /* clear dev ecc 2bit error source if having */
+ value = qm_get_dev_err_status(qm) & qm->err_info.ecc_2bits_mask;
+ if (value && qm->err_ini->clear_dev_hw_err_status)
+ qm->err_ini->clear_dev_hw_err_status(qm, value);
+
+ /* clear QM ecc mbit error source */
+ writel(QM_ECC_MBIT, qm->io_base + QM_ABNORMAL_INT_SOURCE);
+
+ /* clear AM Reorder Buffer ecc mbit source */
+ writel(ACC_ROB_ECC_ERR_MULTPL, qm->io_base + ACC_AM_ROB_ECC_INT_STS);
+}
+
+static void qm_restart_done(struct hisi_qm *qm)
+{
+ u32 value;
+
+ if (qm->ver >= QM_HW_V3)
+ goto clear_flags;
+
+ if (!qm->err_status.is_qm_ecc_mbit &&
+ !qm->err_status.is_dev_ecc_mbit)
+ return;
+
+ /* open the OOO port for PEH to write out MSI */
+ value = readl(qm->io_base + ACC_AM_CFG_PORT_WR_EN);
+ value |= qm->err_info.msi_wr_port;
+ writel(value, qm->io_base + ACC_AM_CFG_PORT_WR_EN);
+
+clear_flags:
+ qm->err_status.is_qm_ecc_mbit = false;
+ qm->err_status.is_dev_ecc_mbit = false;
+}
+
+static int qm_controller_reset_done(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ int ret;
+
+ ret = qm->ops->set_msi(qm, true);
+ if (ret) {
+ pci_err(pdev, "Fails to enable PEH MSI bit!\n");
+ return ret;
+ }
+
+ ret = qm_set_pf_mse(qm, true);
+ if (ret) {
+ pci_err(pdev, "Fails to enable pf MSE bit!\n");
+ return ret;
+ }
+
+ if (qm->vfs_num) {
+ ret = qm_set_vf_mse(qm, true);
+ if (ret) {
+ pci_err(pdev, "Fails to enable vf MSE bit!\n");
+ return ret;
+ }
+ }
+
+ ret = qm_dev_hw_init(qm);
+ if (ret) {
+ pci_err(pdev, "Failed to init device\n");
+ return ret;
+ }
+
+ qm_restart_prepare(qm);
+ hisi_qm_dev_err_init(qm);
+ if (qm->err_ini->open_axi_master_ooo)
+ qm->err_ini->open_axi_master_ooo(qm);
+
+ ret = qm_dev_mem_reset(qm);
+ if (ret) {
+ pci_err(pdev, "failed to reset device memory\n");
+ return ret;
+ }
+
+ ret = qm_restart(qm);
+ if (ret) {
+ pci_err(pdev, "Failed to start QM!\n");
+ return ret;
+ }
+
+ ret = qm_try_start_vfs(qm, QM_PF_RESET_DONE);
+ if (ret)
+ pci_err(pdev, "failed to start vfs by pf in soft reset.\n");
+
+ ret = qm_wait_vf_prepare_finish(qm);
+ if (ret)
+ pci_err(pdev, "failed to start by vfs in soft reset!\n");
+
+ qm_cmd_init(qm);
+ qm_restart_done(qm);
+
+ qm_reset_bit_clear(qm);
+
+ return 0;
+}
+
+static int qm_controller_reset(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ int ret;
+
+ pci_info(pdev, "Controller resetting...\n");
+
+ ret = qm_controller_reset_prepare(qm);
+ if (ret) {
+ hisi_qm_set_hw_reset(qm, QM_RESET_STOP_TX_OFFSET);
+ hisi_qm_set_hw_reset(qm, QM_RESET_STOP_RX_OFFSET);
+ clear_bit(QM_RST_SCHED, &qm->misc_ctl);
+ return ret;
+ }
+
+ hisi_qm_show_last_dfx_regs(qm);
+ if (qm->err_ini->show_last_dfx_regs)
+ qm->err_ini->show_last_dfx_regs(qm);
+
+ ret = qm_soft_reset(qm);
+ if (ret) {
+ pci_err(pdev, "Controller reset failed (%d)\n", ret);
+ qm_reset_bit_clear(qm);
+ return ret;
+ }
+
+ ret = qm_controller_reset_done(qm);
+ if (ret) {
+ qm_reset_bit_clear(qm);
+ return ret;
+ }
+
+ pci_info(pdev, "Controller reset complete\n");
+
+ return 0;
+}
+
+/**
+ * hisi_qm_dev_slot_reset() - slot reset
+ * @pdev: the PCIe device
+ *
+ * This function offers QM relate PCIe device reset interface. Drivers which
+ * use QM can use this function as slot_reset in its struct pci_error_handlers.
+ */
+pci_ers_result_t hisi_qm_dev_slot_reset(struct pci_dev *pdev)
+{
+ struct hisi_qm *qm = pci_get_drvdata(pdev);
+ int ret;
+
+ if (pdev->is_virtfn)
+ return PCI_ERS_RESULT_RECOVERED;
+
+ /* reset pcie device controller */
+ ret = qm_controller_reset(qm);
+ if (ret) {
+ pci_err(pdev, "Controller reset failed (%d)\n", ret);
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+
+ return PCI_ERS_RESULT_RECOVERED;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_dev_slot_reset);
+
+void hisi_qm_reset_prepare(struct pci_dev *pdev)
+{
+ struct hisi_qm *pf_qm = pci_get_drvdata(pci_physfn(pdev));
+ struct hisi_qm *qm = pci_get_drvdata(pdev);
+ u32 delay = 0;
+ int ret;
+
+ hisi_qm_dev_err_uninit(pf_qm);
+
+ /*
+ * Check whether there is an ECC mbit error, If it occurs, need to
+ * wait for soft reset to fix it.
+ */
+ while (qm_check_dev_error(pf_qm)) {
+ msleep(++delay);
+ if (delay > QM_RESET_WAIT_TIMEOUT)
+ return;
+ }
+
+ ret = qm_reset_prepare_ready(qm);
+ if (ret) {
+ pci_err(pdev, "FLR not ready!\n");
+ return;
+ }
+
+ /* PF obtains the information of VF by querying the register. */
+ if (qm->fun_type == QM_HW_PF)
+ qm_cmd_uninit(qm);
+
+ ret = qm_try_stop_vfs(qm, QM_PF_FLR_PREPARE, QM_FLR);
+ if (ret)
+ pci_err(pdev, "failed to stop vfs by pf in FLR.\n");
+
+ ret = hisi_qm_stop(qm, QM_FLR);
+ if (ret) {
+ pci_err(pdev, "Failed to stop QM, ret = %d.\n", ret);
+ hisi_qm_set_hw_reset(qm, QM_RESET_STOP_TX_OFFSET);
+ hisi_qm_set_hw_reset(qm, QM_RESET_STOP_RX_OFFSET);
+ return;
+ }
+
+ ret = qm_wait_vf_prepare_finish(qm);
+ if (ret)
+ pci_err(pdev, "failed to stop by vfs in FLR!\n");
+
+ pci_info(pdev, "FLR resetting...\n");
+}
+EXPORT_SYMBOL_GPL(hisi_qm_reset_prepare);
+
+static bool qm_flr_reset_complete(struct pci_dev *pdev)
+{
+ struct pci_dev *pf_pdev = pci_physfn(pdev);
+ struct hisi_qm *qm = pci_get_drvdata(pf_pdev);
+ u32 id;
+
+ pci_read_config_dword(qm->pdev, PCI_COMMAND, &id);
+ if (id == QM_PCI_COMMAND_INVALID) {
+ pci_err(pdev, "Device can not be used!\n");
+ return false;
+ }
+
+ return true;
+}
+
+void hisi_qm_reset_done(struct pci_dev *pdev)
+{
+ struct hisi_qm *pf_qm = pci_get_drvdata(pci_physfn(pdev));
+ struct hisi_qm *qm = pci_get_drvdata(pdev);
+ int ret;
+
+ if (qm->fun_type == QM_HW_PF) {
+ ret = qm_dev_hw_init(qm);
+ if (ret) {
+ pci_err(pdev, "Failed to init PF, ret = %d.\n", ret);
+ goto flr_done;
+ }
+ }
+
+ hisi_qm_dev_err_init(pf_qm);
+
+ ret = qm_restart(qm);
+ if (ret) {
+ pci_err(pdev, "Failed to start QM, ret = %d.\n", ret);
+ goto flr_done;
+ }
+
+ ret = qm_try_start_vfs(qm, QM_PF_RESET_DONE);
+ if (ret)
+ pci_err(pdev, "failed to start vfs by pf in FLR.\n");
+
+ ret = qm_wait_vf_prepare_finish(qm);
+ if (ret)
+ pci_err(pdev, "failed to start by vfs in FLR!\n");
+
+flr_done:
+ if (qm->fun_type == QM_HW_PF)
+ qm_cmd_init(qm);
+
+ if (qm_flr_reset_complete(pdev))
+ pci_info(pdev, "FLR reset complete\n");
+
+ qm_reset_bit_clear(qm);
+}
+EXPORT_SYMBOL_GPL(hisi_qm_reset_done);
+
+static irqreturn_t qm_abnormal_irq(int irq, void *data)
+{
+ struct hisi_qm *qm = data;
+ enum acc_err_result ret;
+
+ atomic64_inc(&qm->debug.dfx.abnormal_irq_cnt);
+ ret = qm_process_dev_error(qm);
+ if (ret == ACC_ERR_NEED_RESET &&
+ !test_bit(QM_DRIVER_REMOVING, &qm->misc_ctl) &&
+ !test_and_set_bit(QM_RST_SCHED, &qm->misc_ctl))
+ schedule_work(&qm->rst_work);
+
+ return IRQ_HANDLED;
+}
+
+
+/**
+ * hisi_qm_dev_shutdown() - Shutdown device.
+ * @pdev: The device will be shutdown.
+ *
+ * This function will stop qm when OS shutdown or rebooting.
+ */
+void hisi_qm_dev_shutdown(struct pci_dev *pdev)
+{
+ struct hisi_qm *qm = pci_get_drvdata(pdev);
+ int ret;
+
+ ret = hisi_qm_stop(qm, QM_NORMAL);
+ if (ret)
+ dev_err(&pdev->dev, "Fail to stop qm in shutdown!\n");
+}
+EXPORT_SYMBOL_GPL(hisi_qm_dev_shutdown);
+
+static void hisi_qm_controller_reset(struct work_struct *rst_work)
+{
+ struct hisi_qm *qm = container_of(rst_work, struct hisi_qm, rst_work);
+ int ret;
+
+ ret = qm_pm_get_sync(qm);
+ if (ret) {
+ clear_bit(QM_RST_SCHED, &qm->misc_ctl);
+ return;
+ }
+
+ /* reset pcie device controller */
+ ret = qm_controller_reset(qm);
+ if (ret)
+ dev_err(&qm->pdev->dev, "controller reset failed (%d)\n", ret);
+
+ qm_pm_put_sync(qm);
+}
+
+static void qm_pf_reset_vf_prepare(struct hisi_qm *qm,
+ enum qm_stop_reason stop_reason)
+{
+ enum qm_mb_cmd cmd = QM_VF_PREPARE_DONE;
+ struct pci_dev *pdev = qm->pdev;
+ int ret;
+
+ ret = qm_reset_prepare_ready(qm);
+ if (ret) {
+ dev_err(&pdev->dev, "reset prepare not ready!\n");
+ atomic_set(&qm->status.flags, QM_STOP);
+ cmd = QM_VF_PREPARE_FAIL;
+ goto err_prepare;
+ }
+
+ ret = hisi_qm_stop(qm, stop_reason);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to stop QM, ret = %d.\n", ret);
+ atomic_set(&qm->status.flags, QM_STOP);
+ cmd = QM_VF_PREPARE_FAIL;
+ goto err_prepare;
+ } else {
+ goto out;
+ }
+
+err_prepare:
+ hisi_qm_set_hw_reset(qm, QM_RESET_STOP_TX_OFFSET);
+ hisi_qm_set_hw_reset(qm, QM_RESET_STOP_RX_OFFSET);
+out:
+ pci_save_state(pdev);
+ ret = qm_ping_pf(qm, cmd);
+ if (ret)
+ dev_warn(&pdev->dev, "PF responds timeout in reset prepare!\n");
+}
+
+static void qm_pf_reset_vf_done(struct hisi_qm *qm)
+{
+ enum qm_mb_cmd cmd = QM_VF_START_DONE;
+ struct pci_dev *pdev = qm->pdev;
+ int ret;
+
+ pci_restore_state(pdev);
+ ret = hisi_qm_start(qm);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to start QM, ret = %d.\n", ret);
+ cmd = QM_VF_START_FAIL;
+ }
+
+ qm_cmd_init(qm);
+ ret = qm_ping_pf(qm, cmd);
+ if (ret)
+ dev_warn(&pdev->dev, "PF responds timeout in reset done!\n");
+
+ qm_reset_bit_clear(qm);
+}
+
+static int qm_wait_pf_reset_finish(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ u32 val, cmd;
+ u64 msg;
+ int ret;
+
+ /* Wait for reset to finish */
+ ret = readl_relaxed_poll_timeout(qm->io_base + QM_IFC_INT_SOURCE_V, val,
+ val == BIT(0), QM_VF_RESET_WAIT_US,
+ QM_VF_RESET_WAIT_TIMEOUT_US);
+ /* hardware completion status should be available by this time */
+ if (ret) {
+ dev_err(dev, "couldn't get reset done status from PF, timeout!\n");
+ return -ETIMEDOUT;
+ }
+
+ /*
+ * Whether message is got successfully,
+ * VF needs to ack PF by clearing the interrupt.
+ */
+ ret = qm_get_mb_cmd(qm, &msg, 0);
+ qm_clear_cmd_interrupt(qm, 0);
+ if (ret) {
+ dev_err(dev, "failed to get msg from PF in reset done!\n");
+ return ret;
+ }
+
+ cmd = msg & QM_MB_CMD_DATA_MASK;
+ if (cmd != QM_PF_RESET_DONE) {
+ dev_err(dev, "the cmd(%u) is not reset done!\n", cmd);
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static void qm_pf_reset_vf_process(struct hisi_qm *qm,
+ enum qm_stop_reason stop_reason)
+{
+ struct device *dev = &qm->pdev->dev;
+ int ret;
+
+ dev_info(dev, "device reset start...\n");
+
+ /* The message is obtained by querying the register during resetting */
+ qm_cmd_uninit(qm);
+ qm_pf_reset_vf_prepare(qm, stop_reason);
+
+ ret = qm_wait_pf_reset_finish(qm);
+ if (ret)
+ goto err_get_status;
+
+ qm_pf_reset_vf_done(qm);
+
+ dev_info(dev, "device reset done.\n");
+
+ return;
+
+err_get_status:
+ qm_cmd_init(qm);
+ qm_reset_bit_clear(qm);
+}
+
+static void qm_handle_cmd_msg(struct hisi_qm *qm, u32 fun_num)
+{
+ struct device *dev = &qm->pdev->dev;
+ u64 msg;
+ u32 cmd;
+ int ret;
+
+ /*
+ * Get the msg from source by sending mailbox. Whether message is got
+ * successfully, destination needs to ack source by clearing the interrupt.
+ */
+ ret = qm_get_mb_cmd(qm, &msg, fun_num);
+ qm_clear_cmd_interrupt(qm, BIT(fun_num));
+ if (ret) {
+ dev_err(dev, "failed to get msg from source!\n");
+ return;
+ }
+
+ cmd = msg & QM_MB_CMD_DATA_MASK;
+ switch (cmd) {
+ case QM_PF_FLR_PREPARE:
+ qm_pf_reset_vf_process(qm, QM_FLR);
+ break;
+ case QM_PF_SRST_PREPARE:
+ qm_pf_reset_vf_process(qm, QM_SOFT_RESET);
+ break;
+ case QM_VF_GET_QOS:
+ qm_vf_get_qos(qm, fun_num);
+ break;
+ case QM_PF_SET_QOS:
+ qm->mb_qos = msg >> QM_MB_CMD_DATA_SHIFT;
+ break;
+ default:
+ dev_err(dev, "unsupported cmd %u sent by function(%u)!\n", cmd, fun_num);
+ break;
+ }
+}
+
+static void qm_cmd_process(struct work_struct *cmd_process)
+{
+ struct hisi_qm *qm = container_of(cmd_process,
+ struct hisi_qm, cmd_process);
+ u32 vfs_num = qm->vfs_num;
+ u64 val;
+ u32 i;
+
+ if (qm->fun_type == QM_HW_PF) {
+ val = readq(qm->io_base + QM_IFC_INT_SOURCE_P);
+ if (!val)
+ return;
+
+ for (i = 1; i <= vfs_num; i++) {
+ if (val & BIT(i))
+ qm_handle_cmd_msg(qm, i);
+ }
+
+ return;
+ }
+
+ qm_handle_cmd_msg(qm, 0);
+}
+
+/**
+ * hisi_qm_alg_register() - Register alg to crypto and add qm to qm_list.
+ * @qm: The qm needs add.
+ * @qm_list: The qm list.
+ *
+ * This function adds qm to qm list, and will register algorithm to
+ * crypto when the qm list is empty.
+ */
+int hisi_qm_alg_register(struct hisi_qm *qm, struct hisi_qm_list *qm_list)
+{
+ struct device *dev = &qm->pdev->dev;
+ int flag = 0;
+ int ret = 0;
+
+ mutex_lock(&qm_list->lock);
+ if (list_empty(&qm_list->list))
+ flag = 1;
+ list_add_tail(&qm->list, &qm_list->list);
+ mutex_unlock(&qm_list->lock);
+
+ if (qm->ver <= QM_HW_V2 && qm->use_sva) {
+ dev_info(dev, "HW V2 not both use uacce sva mode and hardware crypto algs.\n");
+ return 0;
+ }
+
+ if (flag) {
+ ret = qm_list->register_to_crypto(qm);
+ if (ret) {
+ mutex_lock(&qm_list->lock);
+ list_del(&qm->list);
+ mutex_unlock(&qm_list->lock);
+ }
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_alg_register);
+
+/**
+ * hisi_qm_alg_unregister() - Unregister alg from crypto and delete qm from
+ * qm list.
+ * @qm: The qm needs delete.
+ * @qm_list: The qm list.
+ *
+ * This function deletes qm from qm list, and will unregister algorithm
+ * from crypto when the qm list is empty.
+ */
+void hisi_qm_alg_unregister(struct hisi_qm *qm, struct hisi_qm_list *qm_list)
+{
+ mutex_lock(&qm_list->lock);
+ list_del(&qm->list);
+ mutex_unlock(&qm_list->lock);
+
+ if (qm->ver <= QM_HW_V2 && qm->use_sva)
+ return;
+
+ if (list_empty(&qm_list->list))
+ qm_list->unregister_from_crypto(qm);
+}
+EXPORT_SYMBOL_GPL(hisi_qm_alg_unregister);
+
+static void qm_unregister_abnormal_irq(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ u32 irq_vector, val;
+
+ if (qm->fun_type == QM_HW_VF)
+ return;
+
+ val = qm->cap_tables.qm_cap_table[QM_ABN_IRQ_TYPE_CAP_IDX].cap_val;
+ if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_ABN_IRQ_TYPE_MASK))
+ return;
+
+ irq_vector = val & QM_IRQ_VECTOR_MASK;
+ free_irq(pci_irq_vector(pdev, irq_vector), qm);
+}
+
+static int qm_register_abnormal_irq(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ u32 irq_vector, val;
+ int ret;
+
+ if (qm->fun_type == QM_HW_VF)
+ return 0;
+
+ val = qm->cap_tables.qm_cap_table[QM_ABN_IRQ_TYPE_CAP_IDX].cap_val;
+ if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_ABN_IRQ_TYPE_MASK))
+ return 0;
+
+ irq_vector = val & QM_IRQ_VECTOR_MASK;
+ ret = request_irq(pci_irq_vector(pdev, irq_vector), qm_abnormal_irq, 0, qm->dev_name, qm);
+ if (ret)
+ dev_err(&qm->pdev->dev, "failed to request abnormal irq, ret = %d", ret);
+
+ return ret;
+}
+
+static void qm_unregister_mb_cmd_irq(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ u32 irq_vector, val;
+
+ val = qm->cap_tables.qm_cap_table[QM_PF2VF_IRQ_TYPE_CAP_IDX].cap_val;
+ if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_IRQ_TYPE_MASK))
+ return;
+
+ irq_vector = val & QM_IRQ_VECTOR_MASK;
+ free_irq(pci_irq_vector(pdev, irq_vector), qm);
+}
+
+static int qm_register_mb_cmd_irq(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ u32 irq_vector, val;
+ int ret;
+
+ val = qm->cap_tables.qm_cap_table[QM_PF2VF_IRQ_TYPE_CAP_IDX].cap_val;
+ if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_IRQ_TYPE_MASK))
+ return 0;
+
+ irq_vector = val & QM_IRQ_VECTOR_MASK;
+ ret = request_irq(pci_irq_vector(pdev, irq_vector), qm_mb_cmd_irq, 0, qm->dev_name, qm);
+ if (ret)
+ dev_err(&pdev->dev, "failed to request function communication irq, ret = %d", ret);
+
+ return ret;
+}
+
+static void qm_unregister_aeq_irq(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ u32 irq_vector, val;
+
+ val = qm->cap_tables.qm_cap_table[QM_AEQ_IRQ_TYPE_CAP_IDX].cap_val;
+ if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_IRQ_TYPE_MASK))
+ return;
+
+ irq_vector = val & QM_IRQ_VECTOR_MASK;
+ free_irq(pci_irq_vector(pdev, irq_vector), qm);
+}
+
+static int qm_register_aeq_irq(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ u32 irq_vector, val;
+ int ret;
+
+ val = qm->cap_tables.qm_cap_table[QM_AEQ_IRQ_TYPE_CAP_IDX].cap_val;
+ if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_IRQ_TYPE_MASK))
+ return 0;
+
+ irq_vector = val & QM_IRQ_VECTOR_MASK;
+ ret = request_threaded_irq(pci_irq_vector(pdev, irq_vector), qm_aeq_irq,
+ qm_aeq_thread, 0, qm->dev_name, qm);
+ if (ret)
+ dev_err(&pdev->dev, "failed to request eq irq, ret = %d", ret);
+
+ return ret;
+}
+
+static void qm_unregister_eq_irq(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ u32 irq_vector, val;
+
+ val = qm->cap_tables.qm_cap_table[QM_EQ_IRQ_TYPE_CAP_IDX].cap_val;
+ if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_IRQ_TYPE_MASK))
+ return;
+
+ irq_vector = val & QM_IRQ_VECTOR_MASK;
+ free_irq(pci_irq_vector(pdev, irq_vector), qm);
+}
+
+static int qm_register_eq_irq(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ u32 irq_vector, val;
+ int ret;
+
+ val = qm->cap_tables.qm_cap_table[QM_EQ_IRQ_TYPE_CAP_IDX].cap_val;
+ if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_IRQ_TYPE_MASK))
+ return 0;
+
+ irq_vector = val & QM_IRQ_VECTOR_MASK;
+ ret = request_irq(pci_irq_vector(pdev, irq_vector), qm_irq, 0, qm->dev_name, qm);
+ if (ret)
+ dev_err(&pdev->dev, "failed to request eq irq, ret = %d", ret);
+
+ return ret;
+}
+
+static void qm_irqs_unregister(struct hisi_qm *qm)
+{
+ qm_unregister_mb_cmd_irq(qm);
+ qm_unregister_abnormal_irq(qm);
+ qm_unregister_aeq_irq(qm);
+ qm_unregister_eq_irq(qm);
+}
+
+static int qm_irqs_register(struct hisi_qm *qm)
+{
+ int ret;
+
+ ret = qm_register_eq_irq(qm);
+ if (ret)
+ return ret;
+
+ ret = qm_register_aeq_irq(qm);
+ if (ret)
+ goto free_eq_irq;
+
+ ret = qm_register_abnormal_irq(qm);
+ if (ret)
+ goto free_aeq_irq;
+
+ ret = qm_register_mb_cmd_irq(qm);
+ if (ret)
+ goto free_abnormal_irq;
+
+ return 0;
+
+free_abnormal_irq:
+ qm_unregister_abnormal_irq(qm);
+free_aeq_irq:
+ qm_unregister_aeq_irq(qm);
+free_eq_irq:
+ qm_unregister_eq_irq(qm);
+ return ret;
+}
+
+static int qm_get_qp_num(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ bool is_db_isolation;
+
+ /* VF's qp_num assigned by PF in v2, and VF can get qp_num by vft. */
+ if (qm->fun_type == QM_HW_VF) {
+ if (qm->ver != QM_HW_V1)
+ /* v2 starts to support get vft by mailbox */
+ return hisi_qm_get_vft(qm, &qm->qp_base, &qm->qp_num);
+
+ return 0;
+ }
+
+ is_db_isolation = test_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps);
+ qm->ctrl_qp_num = hisi_qm_get_hw_info(qm, qm_basic_info, QM_TOTAL_QP_NUM_CAP, true);
+ qm->max_qp_num = hisi_qm_get_hw_info(qm, qm_basic_info,
+ QM_FUNC_MAX_QP_CAP, is_db_isolation);
+
+ if (qm->qp_num <= qm->max_qp_num)
+ return 0;
+
+ if (test_bit(QM_MODULE_PARAM, &qm->misc_ctl)) {
+ /* Check whether the set qp number is valid */
+ dev_err(dev, "qp num(%u) is more than max qp num(%u)!\n",
+ qm->qp_num, qm->max_qp_num);
+ return -EINVAL;
+ }
+
+ dev_info(dev, "Default qp num(%u) is too big, reset it to Function's max qp num(%u)!\n",
+ qm->qp_num, qm->max_qp_num);
+ qm->qp_num = qm->max_qp_num;
+ qm->debug.curr_qm_qp_num = qm->qp_num;
+
+ return 0;
+}
+
+static int qm_pre_store_irq_type_caps(struct hisi_qm *qm)
+{
+ struct hisi_qm_cap_record *qm_cap;
+ struct pci_dev *pdev = qm->pdev;
+ size_t i, size;
+
+ size = ARRAY_SIZE(qm_pre_store_caps);
+ qm_cap = devm_kzalloc(&pdev->dev, sizeof(*qm_cap) * size, GFP_KERNEL);
+ if (!qm_cap)
+ return -ENOMEM;
+
+ for (i = 0; i < size; i++) {
+ qm_cap[i].type = qm_pre_store_caps[i];
+ qm_cap[i].cap_val = hisi_qm_get_hw_info(qm, qm_basic_info,
+ qm_pre_store_caps[i], qm->cap_ver);
+ }
+
+ qm->cap_tables.qm_cap_table = qm_cap;
+
+ return 0;
+}
+
+static int qm_get_hw_caps(struct hisi_qm *qm)
+{
+ const struct hisi_qm_cap_info *cap_info = qm->fun_type == QM_HW_PF ?
+ qm_cap_info_pf : qm_cap_info_vf;
+ u32 size = qm->fun_type == QM_HW_PF ? ARRAY_SIZE(qm_cap_info_pf) :
+ ARRAY_SIZE(qm_cap_info_vf);
+ u32 val, i;
+
+ /* Doorbell isolate register is a independent register. */
+ val = hisi_qm_get_hw_info(qm, qm_cap_info_comm, QM_SUPPORT_DB_ISOLATION, true);
+ if (val)
+ set_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps);
+
+ if (qm->ver >= QM_HW_V3) {
+ val = readl(qm->io_base + QM_FUNC_CAPS_REG);
+ qm->cap_ver = val & QM_CAPBILITY_VERSION;
+ }
+
+ /* Get PF/VF common capbility */
+ for (i = 1; i < ARRAY_SIZE(qm_cap_info_comm); i++) {
+ val = hisi_qm_get_hw_info(qm, qm_cap_info_comm, i, qm->cap_ver);
+ if (val)
+ set_bit(qm_cap_info_comm[i].type, &qm->caps);
+ }
+
+ /* Get PF/VF different capbility */
+ for (i = 0; i < size; i++) {
+ val = hisi_qm_get_hw_info(qm, cap_info, i, qm->cap_ver);
+ if (val)
+ set_bit(cap_info[i].type, &qm->caps);
+ }
+
+ /* Fetch and save the value of irq type related capability registers */
+ return qm_pre_store_irq_type_caps(qm);
+}
+
+static int qm_get_pci_res(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ ret = pci_request_mem_regions(pdev, qm->dev_name);
+ if (ret < 0) {
+ dev_err(dev, "Failed to request mem regions!\n");
+ return ret;
+ }
+
+ qm->phys_base = pci_resource_start(pdev, PCI_BAR_2);
+ qm->io_base = ioremap(qm->phys_base, pci_resource_len(pdev, PCI_BAR_2));
+ if (!qm->io_base) {
+ ret = -EIO;
+ goto err_request_mem_regions;
+ }
+
+ ret = qm_get_hw_caps(qm);
+ if (ret)
+ goto err_ioremap;
+
+ if (test_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps)) {
+ qm->db_interval = QM_QP_DB_INTERVAL;
+ qm->db_phys_base = pci_resource_start(pdev, PCI_BAR_4);
+ qm->db_io_base = ioremap(qm->db_phys_base,
+ pci_resource_len(pdev, PCI_BAR_4));
+ if (!qm->db_io_base) {
+ ret = -EIO;
+ goto err_ioremap;
+ }
+ } else {
+ qm->db_phys_base = qm->phys_base;
+ qm->db_io_base = qm->io_base;
+ qm->db_interval = 0;
+ }
+
+ ret = qm_get_qp_num(qm);
+ if (ret)
+ goto err_db_ioremap;
+
+ return 0;
+
+err_db_ioremap:
+ if (test_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps))
+ iounmap(qm->db_io_base);
+err_ioremap:
+ iounmap(qm->io_base);
+err_request_mem_regions:
+ pci_release_mem_regions(pdev);
+ return ret;
+}
+
+static int hisi_qm_pci_init(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ struct device *dev = &pdev->dev;
+ unsigned int num_vec;
+ int ret;
+
+ ret = pci_enable_device_mem(pdev);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable device mem!\n");
+ return ret;
+ }
+
+ ret = qm_get_pci_res(qm);
+ if (ret)
+ goto err_disable_pcidev;
+
+ ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
+ if (ret < 0)
+ goto err_get_pci_res;
+ pci_set_master(pdev);
+
+ num_vec = qm_get_irq_num(qm);
+ ret = pci_alloc_irq_vectors(pdev, num_vec, num_vec, PCI_IRQ_MSI);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable MSI vectors!\n");
+ goto err_get_pci_res;
+ }
+
+ return 0;
+
+err_get_pci_res:
+ qm_put_pci_res(qm);
+err_disable_pcidev:
+ pci_disable_device(pdev);
+ return ret;
+}
+
+static int hisi_qm_init_work(struct hisi_qm *qm)
+{
+ int i;
+
+ for (i = 0; i < qm->qp_num; i++)
+ INIT_WORK(&qm->poll_data[i].work, qm_work_process);
+
+ if (qm->fun_type == QM_HW_PF)
+ INIT_WORK(&qm->rst_work, hisi_qm_controller_reset);
+
+ if (qm->ver > QM_HW_V2)
+ INIT_WORK(&qm->cmd_process, qm_cmd_process);
+
+ qm->wq = alloc_workqueue("%s", WQ_HIGHPRI | WQ_MEM_RECLAIM |
+ WQ_UNBOUND, num_online_cpus(),
+ pci_name(qm->pdev));
+ if (!qm->wq) {
+ pci_err(qm->pdev, "failed to alloc workqueue!\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int hisi_qp_alloc_memory(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ u16 sq_depth, cq_depth;
+ size_t qp_dma_size;
+ int i, ret;
+
+ qm->qp_array = kcalloc(qm->qp_num, sizeof(struct hisi_qp), GFP_KERNEL);
+ if (!qm->qp_array)
+ return -ENOMEM;
+
+ qm->poll_data = kcalloc(qm->qp_num, sizeof(struct hisi_qm_poll_data), GFP_KERNEL);
+ if (!qm->poll_data) {
+ kfree(qm->qp_array);
+ return -ENOMEM;
+ }
+
+ qm_get_xqc_depth(qm, &sq_depth, &cq_depth, QM_QP_DEPTH_CAP);
+
+ /* one more page for device or qp statuses */
+ qp_dma_size = qm->sqe_size * sq_depth + sizeof(struct qm_cqe) * cq_depth;
+ qp_dma_size = PAGE_ALIGN(qp_dma_size) + PAGE_SIZE;
+ for (i = 0; i < qm->qp_num; i++) {
+ qm->poll_data[i].qm = qm;
+ ret = hisi_qp_memory_init(qm, qp_dma_size, i, sq_depth, cq_depth);
+ if (ret)
+ goto err_init_qp_mem;
+
+ dev_dbg(dev, "allocate qp dma buf size=%zx)\n", qp_dma_size);
+ }
+
+ return 0;
+err_init_qp_mem:
+ hisi_qp_memory_uninit(qm, i);
+
+ return ret;
+}
+
+static int hisi_qm_memory_init(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+ int ret, total_func;
+ size_t off = 0;
+
+ if (test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps)) {
+ total_func = pci_sriov_get_totalvfs(qm->pdev) + 1;
+ qm->factor = kcalloc(total_func, sizeof(struct qm_shaper_factor), GFP_KERNEL);
+ if (!qm->factor)
+ return -ENOMEM;
+
+ /* Only the PF value needs to be initialized */
+ qm->factor[0].func_qos = QM_QOS_MAX_VAL;
+ }
+
+#define QM_INIT_BUF(qm, type, num) do { \
+ (qm)->type = ((qm)->qdma.va + (off)); \
+ (qm)->type##_dma = (qm)->qdma.dma + (off); \
+ off += QMC_ALIGN(sizeof(struct qm_##type) * (num)); \
+} while (0)
+
+ idr_init(&qm->qp_idr);
+ qm_get_xqc_depth(qm, &qm->eq_depth, &qm->aeq_depth, QM_XEQ_DEPTH_CAP);
+ qm->qdma.size = QMC_ALIGN(sizeof(struct qm_eqe) * qm->eq_depth) +
+ QMC_ALIGN(sizeof(struct qm_aeqe) * qm->aeq_depth) +
+ QMC_ALIGN(sizeof(struct qm_sqc) * qm->qp_num) +
+ QMC_ALIGN(sizeof(struct qm_cqc) * qm->qp_num);
+ qm->qdma.va = dma_alloc_coherent(dev, qm->qdma.size, &qm->qdma.dma,
+ GFP_ATOMIC);
+ dev_dbg(dev, "allocate qm dma buf size=%zx)\n", qm->qdma.size);
+ if (!qm->qdma.va) {
+ ret = -ENOMEM;
+ goto err_destroy_idr;
+ }
+
+ QM_INIT_BUF(qm, eqe, qm->eq_depth);
+ QM_INIT_BUF(qm, aeqe, qm->aeq_depth);
+ QM_INIT_BUF(qm, sqc, qm->qp_num);
+ QM_INIT_BUF(qm, cqc, qm->qp_num);
+
+ ret = hisi_qp_alloc_memory(qm);
+ if (ret)
+ goto err_alloc_qp_array;
+
+ return 0;
+
+err_alloc_qp_array:
+ dma_free_coherent(dev, qm->qdma.size, qm->qdma.va, qm->qdma.dma);
+err_destroy_idr:
+ idr_destroy(&qm->qp_idr);
+ if (test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps))
+ kfree(qm->factor);
+
+ return ret;
+}
+
+/**
+ * hisi_qm_init() - Initialize configures about qm.
+ * @qm: The qm needing init.
+ *
+ * This function init qm, then we can call hisi_qm_start to put qm into work.
+ */
+int hisi_qm_init(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ hisi_qm_pre_init(qm);
+
+ ret = hisi_qm_pci_init(qm);
+ if (ret)
+ return ret;
+
+ ret = qm_irqs_register(qm);
+ if (ret)
+ goto err_pci_init;
+
+ if (qm->fun_type == QM_HW_PF) {
+ qm_disable_clock_gate(qm);
+ ret = qm_dev_mem_reset(qm);
+ if (ret) {
+ dev_err(dev, "failed to reset device memory\n");
+ goto err_irq_register;
+ }
+ }
+
+ if (qm->mode == UACCE_MODE_SVA) {
+ ret = qm_alloc_uacce(qm);
+ if (ret < 0)
+ dev_warn(dev, "fail to alloc uacce (%d)\n", ret);
+ }
+
+ ret = hisi_qm_memory_init(qm);
+ if (ret)
+ goto err_alloc_uacce;
+
+ ret = hisi_qm_init_work(qm);
+ if (ret)
+ goto err_free_qm_memory;
+
+ qm_cmd_init(qm);
+ atomic_set(&qm->status.flags, QM_INIT);
+
+ return 0;
+
+err_free_qm_memory:
+ hisi_qm_memory_uninit(qm);
+err_alloc_uacce:
+ if (qm->use_sva) {
+ uacce_remove(qm->uacce);
+ qm->uacce = NULL;
+ }
+err_irq_register:
+ qm_irqs_unregister(qm);
+err_pci_init:
+ hisi_qm_pci_uninit(qm);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_init);
+
+/**
+ * hisi_qm_get_dfx_access() - Try to get dfx access.
+ * @qm: pointer to accelerator device.
+ *
+ * Try to get dfx access, then user can get message.
+ *
+ * If device is in suspended, return failure, otherwise
+ * bump up the runtime PM usage counter.
+ */
+int hisi_qm_get_dfx_access(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+
+ if (pm_runtime_suspended(dev)) {
+ dev_info(dev, "can not read/write - device in suspended.\n");
+ return -EAGAIN;
+ }
+
+ return qm_pm_get_sync(qm);
+}
+EXPORT_SYMBOL_GPL(hisi_qm_get_dfx_access);
+
+/**
+ * hisi_qm_put_dfx_access() - Put dfx access.
+ * @qm: pointer to accelerator device.
+ *
+ * Put dfx access, drop runtime PM usage counter.
+ */
+void hisi_qm_put_dfx_access(struct hisi_qm *qm)
+{
+ qm_pm_put_sync(qm);
+}
+EXPORT_SYMBOL_GPL(hisi_qm_put_dfx_access);
+
+/**
+ * hisi_qm_pm_init() - Initialize qm runtime PM.
+ * @qm: pointer to accelerator device.
+ *
+ * Function that initialize qm runtime PM.
+ */
+void hisi_qm_pm_init(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+
+ if (!test_bit(QM_SUPPORT_RPM, &qm->caps))
+ return;
+
+ pm_runtime_set_autosuspend_delay(dev, QM_AUTOSUSPEND_DELAY);
+ pm_runtime_use_autosuspend(dev);
+ pm_runtime_put_noidle(dev);
+}
+EXPORT_SYMBOL_GPL(hisi_qm_pm_init);
+
+/**
+ * hisi_qm_pm_uninit() - Uninitialize qm runtime PM.
+ * @qm: pointer to accelerator device.
+ *
+ * Function that uninitialize qm runtime PM.
+ */
+void hisi_qm_pm_uninit(struct hisi_qm *qm)
+{
+ struct device *dev = &qm->pdev->dev;
+
+ if (!test_bit(QM_SUPPORT_RPM, &qm->caps))
+ return;
+
+ pm_runtime_get_noresume(dev);
+ pm_runtime_dont_use_autosuspend(dev);
+}
+EXPORT_SYMBOL_GPL(hisi_qm_pm_uninit);
+
+static int qm_prepare_for_suspend(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ int ret;
+ u32 val;
+
+ ret = qm->ops->set_msi(qm, false);
+ if (ret) {
+ pci_err(pdev, "failed to disable MSI before suspending!\n");
+ return ret;
+ }
+
+ /* shutdown OOO register */
+ writel(ACC_MASTER_GLOBAL_CTRL_SHUTDOWN,
+ qm->io_base + ACC_MASTER_GLOBAL_CTRL);
+
+ ret = readl_relaxed_poll_timeout(qm->io_base + ACC_MASTER_TRANS_RETURN,
+ val,
+ (val == ACC_MASTER_TRANS_RETURN_RW),
+ POLL_PERIOD, POLL_TIMEOUT);
+ if (ret) {
+ pci_emerg(pdev, "Bus lock! Please reset system.\n");
+ return ret;
+ }
+
+ ret = qm_set_pf_mse(qm, false);
+ if (ret)
+ pci_err(pdev, "failed to disable MSE before suspending!\n");
+
+ return ret;
+}
+
+static int qm_rebuild_for_resume(struct hisi_qm *qm)
+{
+ struct pci_dev *pdev = qm->pdev;
+ int ret;
+
+ ret = qm_set_pf_mse(qm, true);
+ if (ret) {
+ pci_err(pdev, "failed to enable MSE after resuming!\n");
+ return ret;
+ }
+
+ ret = qm->ops->set_msi(qm, true);
+ if (ret) {
+ pci_err(pdev, "failed to enable MSI after resuming!\n");
+ return ret;
+ }
+
+ ret = qm_dev_hw_init(qm);
+ if (ret) {
+ pci_err(pdev, "failed to init device after resuming\n");
+ return ret;
+ }
+
+ qm_cmd_init(qm);
+ hisi_qm_dev_err_init(qm);
+ qm_disable_clock_gate(qm);
+ ret = qm_dev_mem_reset(qm);
+ if (ret)
+ pci_err(pdev, "failed to reset device memory\n");
+
+ return ret;
+}
+
+/**
+ * hisi_qm_suspend() - Runtime suspend of given device.
+ * @dev: device to suspend.
+ *
+ * Function that suspend the device.
+ */
+int hisi_qm_suspend(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct hisi_qm *qm = pci_get_drvdata(pdev);
+ int ret;
+
+ pci_info(pdev, "entering suspended state\n");
+
+ ret = hisi_qm_stop(qm, QM_NORMAL);
+ if (ret) {
+ pci_err(pdev, "failed to stop qm(%d)\n", ret);
+ return ret;
+ }
+
+ ret = qm_prepare_for_suspend(qm);
+ if (ret)
+ pci_err(pdev, "failed to prepare suspended(%d)\n", ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_suspend);
+
+/**
+ * hisi_qm_resume() - Runtime resume of given device.
+ * @dev: device to resume.
+ *
+ * Function that resume the device.
+ */
+int hisi_qm_resume(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct hisi_qm *qm = pci_get_drvdata(pdev);
+ int ret;
+
+ pci_info(pdev, "resuming from suspend state\n");
+
+ ret = qm_rebuild_for_resume(qm);
+ if (ret) {
+ pci_err(pdev, "failed to rebuild resume(%d)\n", ret);
+ return ret;
+ }
+
+ ret = hisi_qm_start(qm);
+ if (ret)
+ pci_err(pdev, "failed to start qm(%d)\n", ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(hisi_qm_resume);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Zhou Wang <wangzhou1@hisilicon.com>");
+MODULE_DESCRIPTION("HiSilicon Accelerator queue manager driver");