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linux/drivers/crypto/hisilicon/qm.c
Yang Shen 3d29e98d1d crypto: hisilicon/qm - fix the process of register algorithms to crypto 
When the devices are removed or not existing, the corresponding algorithms
which are registered by 'hisi-zip' driver can't be used.

Move 'hisi_zip_register_to_crypto' from 'hisi_zip_init' to
'hisi_zip_probe'. The algorithms will be registered to crypto only when
there is device bind on the driver. And when the devices are removed,
the algorithms will be unregistered.

In the previous process, the function 'xxx_register_to_crypto' need a lock
and a static variable to judge if the registration is the first time.
Move this action into the function 'hisi_qm_alg_register'. Each device
will call 'hisi_qm_alg_register' to add itself to qm list in probe process
and registering algs when the qm list is empty.

Signed-off-by: Yang Shen <shenyang39@huawei.com>
Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-08-21 14:47:53 +10:00

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// 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/debugfs.h>
#include <linux/dma-mapping.h>
#include <linux/idr.h>
#include <linux/io.h>
#include <linux/irqreturn.h>
#include <linux/log2.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 "qm.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_NUM_V1 1
#define QM_IRQ_NUM_PF_V2 4
#define QM_IRQ_NUM_VF_V2 2
#define QM_EQ_EVENT_IRQ_VECTOR 0
#define QM_AEQ_EVENT_IRQ_VECTOR 1
#define QM_ABNORMAL_EVENT_IRQ_VECTOR 3
/* mailbox */
#define QM_MB_CMD_SQC 0x0
#define QM_MB_CMD_CQC 0x1
#define QM_MB_CMD_EQC 0x2
#define QM_MB_CMD_AEQC 0x3
#define QM_MB_CMD_SQC_BT 0x4
#define QM_MB_CMD_CQC_BT 0x5
#define QM_MB_CMD_SQC_VFT_V2 0x6
#define QM_MB_CMD_SEND_BASE 0x300
#define QM_MB_EVENT_SHIFT 8
#define QM_MB_BUSY_SHIFT 13
#define QM_MB_OP_SHIFT 14
#define QM_MB_CMD_DATA_ADDR_L 0x304
#define QM_MB_CMD_DATA_ADDR_H 0x308
/* 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_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_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_DOORBELL_SQ_CQ_BASE_V2 0x1000
#define QM_DOORBELL_EQ_AEQ_BASE_V2 0x2000
#define QM_DB_CMD_SHIFT_V2 12
#define QM_DB_RAND_SHIFT_V2 16
#define QM_DB_INDEX_SHIFT_V2 32
#define QM_DB_PRIORITY_SHIFT_V2 48
#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_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(5, 0)
#define QM_SQC_VFT_NUM_SHIFT_V2 45
#define QM_SQC_VFT_NUM_MASK_v2 GENMASK(9, 0)
#define QM_DFX_CNT_CLR_CE 0x100118
#define QM_ABNORMAL_INT_SOURCE 0x100000
#define QM_ABNORMAL_INT_SOURCE_CLR GENMASK(12, 0)
#define QM_ABNORMAL_INT_MASK 0x100004
#define QM_ABNORMAL_INT_MASK_VALUE 0x1fff
#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_RAS_MSI_INT_SEL 0x1040f4
#define QM_DEV_RESET_FLAG 0
#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 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 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 PCI_BAR_2 2
#define QM_SQE_DATA_ALIGN_MASK GENMASK(6, 0)
#define QMC_ALIGN(sz) ALIGN(sz, 32)
#define QM_DBG_READ_LEN 256
#define QM_DBG_WRITE_LEN 1024
#define QM_DBG_TMP_BUF_LEN 22
#define QM_PCI_COMMAND_INVALID ~0
#define WAIT_PERIOD 20
#define REMOVE_WAIT_DELAY 10
#define QM_SQE_ADDR_MASK GENMASK(7, 0)
#define QM_EQ_DEPTH (1024 * 2)
#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) \
((QM_Q_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) \
((QM_Q_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,
};
enum acc_err_result {
ACC_ERR_NONE,
ACC_ERR_NEED_RESET,
ACC_ERR_RECOVERED,
};
struct qm_cqe {
__le32 rsvd0;
__le16 cmd_id;
__le16 rsvd1;
__le16 sq_head;
__le16 sq_num;
__le16 rsvd2;
__le16 w7;
};
struct qm_eqe {
__le32 dw0;
};
struct qm_aeqe {
__le32 dw0;
};
struct qm_sqc {
__le16 head;
__le16 tail;
__le32 base_l;
__le32 base_h;
__le32 dw3;
__le16 w8;
__le16 rsvd0;
__le16 pasid;
__le16 w11;
__le16 cq_num;
__le16 w13;
__le32 rsvd1;
};
struct qm_cqc {
__le16 head;
__le16 tail;
__le32 base_l;
__le32 base_h;
__le32 dw3;
__le16 w8;
__le16 rsvd0;
__le16 pasid;
__le16 w11;
__le32 dw6;
__le32 rsvd1;
};
struct qm_eqc {
__le16 head;
__le16 tail;
__le32 base_l;
__le32 base_h;
__le32 dw3;
__le32 rsvd[2];
__le32 dw6;
};
struct qm_aeqc {
__le16 head;
__le16 tail;
__le32 base_l;
__le32 base_h;
__le32 dw3;
__le32 rsvd[2];
__le32 dw6;
};
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);
u32 (*get_irq_num)(struct hisi_qm *qm);
int (*debug_init)(struct hisi_qm *qm);
void (*hw_error_init)(struct hisi_qm *qm, u32 ce, u32 nfe, u32 fe);
void (*hw_error_uninit)(struct hisi_qm *qm);
enum acc_err_result (*hw_error_handle)(struct hisi_qm *qm);
};
struct qm_dfx_item {
const char *name;
u32 offset;
};
static struct qm_dfx_item qm_dfx_files[] = {
{"err_irq", offsetof(struct qm_dfx, err_irq_cnt)},
{"aeq_irq", offsetof(struct qm_dfx, aeq_irq_cnt)},
{"abnormal_irq", offsetof(struct qm_dfx, abnormal_irq_cnt)},
{"create_qp_err", offsetof(struct qm_dfx, create_qp_err_cnt)},
{"mb_err", offsetof(struct qm_dfx, mb_err_cnt)},
};
static const char * const qm_debug_file_name[] = {
[CURRENT_Q] = "current_q",
[CLEAR_ENABLE] = "clear_enable",
};
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" },
{ /* 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 qm_s[] = {
"init", "start", "close", "stop",
};
static const char * const qp_s[] = {
"none", "init", "start", "stop", "close",
};
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;
}
/* return 0 mailbox ready, -ETIMEDOUT hardware timeout */
static int 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), 10, 1000);
}
/* 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);
wmb();
return;
}
asm volatile("ldp %0, %1, %3\n"
"stp %0, %1, %2\n"
"dsb sy\n"
: "=&r" (tmp0),
"=&r" (tmp1),
"+Q" (*((char __iomem *)fun_base))
: "Q" (*((char *)src))
: "memory");
}
static int qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue,
bool op)
{
struct qm_mailbox mailbox;
int ret = 0;
dev_dbg(&qm->pdev->dev, "QM mailbox request to q%u: %u-%llx\n",
queue, cmd, (unsigned long long)dma_addr);
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(dma_addr));
mailbox.base_h = cpu_to_le32(upper_32_bits(dma_addr));
mailbox.rsvd = 0;
mutex_lock(&qm->mailbox_lock);
if (unlikely(qm_wait_mb_ready(qm))) {
ret = -EBUSY;
dev_err(&qm->pdev->dev, "QM mailbox is busy to start!\n");
goto busy_unlock;
}
qm_mb_write(qm, &mailbox);
if (unlikely(qm_wait_mb_ready(qm))) {
ret = -EBUSY;
dev_err(&qm->pdev->dev, "QM mailbox operation timeout!\n");
goto busy_unlock;
}
busy_unlock:
mutex_unlock(&qm->mailbox_lock);
if (ret)
atomic64_inc(&qm->debug.dfx.mb_err_cnt);
return ret;
}
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)
{
u64 doorbell;
u64 dbase;
u16 randata = 0;
if (cmd == QM_DOORBELL_CMD_SQ || cmd == QM_DOORBELL_CMD_CQ)
dbase = QM_DOORBELL_SQ_CQ_BASE_V2;
else
dbase = 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, qm->io_base + dbase);
}
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 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), 10, 1000);
}
static u32 qm_get_irq_num_v1(struct hisi_qm *qm)
{
return QM_IRQ_NUM_V1;
}
static u32 qm_get_irq_num_v2(struct hisi_qm *qm)
{
if (qm->fun_type == QM_HW_PF)
return QM_IRQ_NUM_PF_V2;
else
return QM_IRQ_NUM_VF_V2;
}
static struct hisi_qp *qm_to_hisi_qp(struct hisi_qm *qm, struct qm_eqe *eqe)
{
u16 cqn = le32_to_cpu(eqe->dw0) & QM_EQE_CQN_MASK;
return &qm->qp_array[cqn];
}
static void qm_cq_head_update(struct hisi_qp *qp)
{
if (qp->qp_status.cq_head == QM_Q_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_qp(struct hisi_qp *qp, struct hisi_qm *qm)
{
if (qp->event_cb) {
qp->event_cb(qp);
return;
}
if (qp->req_cb) {
struct qm_cqe *cqe = qp->cqe + qp->qp_status.cq_head;
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);
}
/* set c_flag */
qm_db(qm, qp->qp_id, QM_DOORBELL_CMD_CQ,
qp->qp_status.cq_head, 1);
}
}
static void qm_work_process(struct work_struct *work)
{
struct hisi_qm *qm = container_of(work, struct hisi_qm, work);
struct qm_eqe *eqe = qm->eqe + qm->status.eq_head;
struct hisi_qp *qp;
int eqe_num = 0;
while (QM_EQE_PHASE(eqe) == qm->status.eqc_phase) {
eqe_num++;
qp = qm_to_hisi_qp(qm, eqe);
qm_poll_qp(qp, qm);
if (qm->status.eq_head == QM_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 == QM_EQ_DEPTH / 2 - 1) {
eqe_num = 0;
qm_db(qm, 0, QM_DOORBELL_CMD_EQ, qm->status.eq_head, 0);
}
}
qm_db(qm, 0, QM_DOORBELL_CMD_EQ, qm->status.eq_head, 0);
}
static irqreturn_t do_qm_irq(int irq, void *data)
{
struct hisi_qm *qm = (struct hisi_qm *)data;
/* the workqueue created by device driver of QM */
if (qm->wq)
queue_work(qm->wq, &qm->work);
else
schedule_work(&qm->work);
return IRQ_HANDLED;
}
static irqreturn_t qm_irq(int irq, void *data)
{
struct hisi_qm *qm = data;
if (readl(qm->io_base + QM_VF_EQ_INT_SOURCE))
return do_qm_irq(irq, data);
atomic64_inc(&qm->debug.dfx.err_irq_cnt);
dev_err(&qm->pdev->dev, "invalid int source\n");
qm_db(qm, 0, QM_DOORBELL_CMD_EQ, qm->status.eq_head, 0);
return IRQ_NONE;
}
static irqreturn_t qm_aeq_irq(int irq, void *data)
{
struct hisi_qm *qm = data;
struct qm_aeqe *aeqe = qm->aeqe + qm->status.aeq_head;
u32 type;
atomic64_inc(&qm->debug.dfx.aeq_irq_cnt);
if (!readl(qm->io_base + QM_VF_AEQ_INT_SOURCE))
return IRQ_NONE;
while (QM_AEQE_PHASE(aeqe) == qm->status.aeqc_phase) {
type = le32_to_cpu(aeqe->dw0) >> QM_AEQE_TYPE_SHIFT;
if (type < ARRAY_SIZE(qm_fifo_overflow))
dev_err(&qm->pdev->dev, "%s overflow\n",
qm_fifo_overflow[type]);
else
dev_err(&qm->pdev->dev, "unknown error type %d\n",
type);
if (qm->status.aeq_head == QM_Q_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 void qm_irq_unregister(struct hisi_qm *qm)
{
struct pci_dev *pdev = qm->pdev;
free_irq(pci_irq_vector(pdev, QM_EQ_EVENT_IRQ_VECTOR), qm);
if (qm->ver == QM_HW_V1)
return;
free_irq(pci_irq_vector(pdev, QM_AEQ_EVENT_IRQ_VECTOR), qm);
if (qm->fun_type == QM_HW_PF)
free_irq(pci_irq_vector(pdev,
QM_ABNORMAL_EVENT_IRQ_VECTOR), qm);
}
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->flags, 0);
atomic_set(&qp_status->used, 0);
}
static void qm_vft_data_cfg(struct hisi_qm *qm, enum vft_type type, u32 base,
u32 number)
{
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;
}
}
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)
{
unsigned int val;
int ret;
ret = readl_relaxed_poll_timeout(qm->io_base + QM_VFT_CFG_RDY, val,
val & BIT(0), 10, 1000);
if (ret)
return ret;
writel(0x0, qm->io_base + QM_VFT_CFG_OP_WR);
writel(type, qm->io_base + QM_VFT_CFG_TYPE);
writel(fun_num, qm->io_base + QM_VFT_CFG);
qm_vft_data_cfg(qm, type, base, number);
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), 10, 1000);
}
/* 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;
}
return 0;
}
static int qm_get_vft_v2(struct hisi_qm *qm, u32 *base, u32 *number)
{
u64 sqc_vft;
int ret;
ret = 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;
}
static struct hisi_qm *file_to_qm(struct debugfs_file *file)
{
struct qm_debug *debug = file->debug;
return container_of(debug, struct hisi_qm, debug);
}
static u32 current_q_read(struct debugfs_file *file)
{
struct hisi_qm *qm = file_to_qm(file);
return readl(qm->io_base + QM_DFX_SQE_CNT_VF_SQN) >> QM_DFX_QN_SHIFT;
}
static int current_q_write(struct debugfs_file *file, u32 val)
{
struct hisi_qm *qm = file_to_qm(file);
u32 tmp;
if (val >= qm->debug.curr_qm_qp_num)
return -EINVAL;
tmp = val << QM_DFX_QN_SHIFT |
(readl(qm->io_base + QM_DFX_SQE_CNT_VF_SQN) & CURRENT_FUN_MASK);
writel(tmp, qm->io_base + QM_DFX_SQE_CNT_VF_SQN);
tmp = val << QM_DFX_QN_SHIFT |
(readl(qm->io_base + QM_DFX_CQE_CNT_VF_CQN) & CURRENT_FUN_MASK);
writel(tmp, qm->io_base + QM_DFX_CQE_CNT_VF_CQN);
return 0;
}
static u32 clear_enable_read(struct debugfs_file *file)
{
struct hisi_qm *qm = file_to_qm(file);
return readl(qm->io_base + QM_DFX_CNT_CLR_CE);
}
/* rd_clr_ctrl 1 enable read clear, otherwise 0 disable it */
static int clear_enable_write(struct debugfs_file *file, u32 rd_clr_ctrl)
{
struct hisi_qm *qm = file_to_qm(file);
if (rd_clr_ctrl > 1)
return -EINVAL;
writel(rd_clr_ctrl, qm->io_base + QM_DFX_CNT_CLR_CE);
return 0;
}
static ssize_t qm_debug_read(struct file *filp, char __user *buf,
size_t count, loff_t *pos)
{
struct debugfs_file *file = filp->private_data;
enum qm_debug_file index = file->index;
char tbuf[QM_DBG_TMP_BUF_LEN];
u32 val;
int ret;
mutex_lock(&file->lock);
switch (index) {
case CURRENT_Q:
val = current_q_read(file);
break;
case CLEAR_ENABLE:
val = clear_enable_read(file);
break;
default:
mutex_unlock(&file->lock);
return -EINVAL;
}
mutex_unlock(&file->lock);
ret = sprintf(tbuf, "%u\n", val);
return simple_read_from_buffer(buf, count, pos, tbuf, ret);
}
static ssize_t qm_debug_write(struct file *filp, const char __user *buf,
size_t count, loff_t *pos)
{
struct debugfs_file *file = filp->private_data;
enum qm_debug_file index = file->index;
unsigned long val;
char tbuf[QM_DBG_TMP_BUF_LEN];
int len, ret;
if (*pos != 0)
return 0;
if (count >= QM_DBG_TMP_BUF_LEN)
return -ENOSPC;
len = simple_write_to_buffer(tbuf, QM_DBG_TMP_BUF_LEN - 1, pos, buf,
count);
if (len < 0)
return len;
tbuf[len] = '\0';
if (kstrtoul(tbuf, 0, &val))
return -EFAULT;
mutex_lock(&file->lock);
switch (index) {
case CURRENT_Q:
ret = current_q_write(file, val);
if (ret)
goto err_input;
break;
case CLEAR_ENABLE:
ret = clear_enable_write(file, val);
if (ret)
goto err_input;
break;
default:
ret = -EINVAL;
goto err_input;
}
mutex_unlock(&file->lock);
return count;
err_input:
mutex_unlock(&file->lock);
return ret;
}
static const struct file_operations qm_debug_fops = {
.owner = THIS_MODULE,
.open = simple_open,
.read = qm_debug_read,
.write = qm_debug_write,
};
struct qm_dfx_registers {
char *reg_name;
u64 reg_offset;
};
#define CNT_CYC_REGS_NUM 10
static struct qm_dfx_registers qm_dfx_regs[] = {
/* XXX_CNT are reading clear register */
{"QM_ECC_1BIT_CNT ", 0x104000ull},
{"QM_ECC_MBIT_CNT ", 0x104008ull},
{"QM_DFX_MB_CNT ", 0x104018ull},
{"QM_DFX_DB_CNT ", 0x104028ull},
{"QM_DFX_SQE_CNT ", 0x104038ull},
{"QM_DFX_CQE_CNT ", 0x104048ull},
{"QM_DFX_SEND_SQE_TO_ACC_CNT ", 0x104050ull},
{"QM_DFX_WB_SQE_FROM_ACC_CNT ", 0x104058ull},
{"QM_DFX_ACC_FINISH_CNT ", 0x104060ull},
{"QM_DFX_CQE_ERR_CNT ", 0x1040b4ull},
{"QM_DFX_FUNS_ACTIVE_ST ", 0x200ull},
{"QM_ECC_1BIT_INF ", 0x104004ull},
{"QM_ECC_MBIT_INF ", 0x10400cull},
{"QM_DFX_ACC_RDY_VLD0 ", 0x1040a0ull},
{"QM_DFX_ACC_RDY_VLD1 ", 0x1040a4ull},
{"QM_DFX_AXI_RDY_VLD ", 0x1040a8ull},
{"QM_DFX_FF_ST0 ", 0x1040c8ull},
{"QM_DFX_FF_ST1 ", 0x1040ccull},
{"QM_DFX_FF_ST2 ", 0x1040d0ull},
{"QM_DFX_FF_ST3 ", 0x1040d4ull},
{"QM_DFX_FF_ST4 ", 0x1040d8ull},
{"QM_DFX_FF_ST5 ", 0x1040dcull},
{"QM_DFX_FF_ST6 ", 0x1040e0ull},
{"QM_IN_IDLE_ST ", 0x1040e4ull},
{ NULL, 0}
};
static struct qm_dfx_registers qm_vf_dfx_regs[] = {
{"QM_DFX_FUNS_ACTIVE_ST ", 0x200ull},
{ NULL, 0}
};
static int qm_regs_show(struct seq_file *s, void *unused)
{
struct hisi_qm *qm = s->private;
struct qm_dfx_registers *regs;
u32 val;
if (qm->fun_type == QM_HW_PF)
regs = qm_dfx_regs;
else
regs = qm_vf_dfx_regs;
while (regs->reg_name) {
val = readl(qm->io_base + regs->reg_offset);
seq_printf(s, "%s= 0x%08x\n", regs->reg_name, val);
regs++;
}
return 0;
}
static int qm_regs_open(struct inode *inode, struct file *file)
{
return single_open(file, qm_regs_show, inode->i_private);
}
static const struct file_operations qm_regs_fops = {
.owner = THIS_MODULE,
.open = qm_regs_open,
.read = seq_read,
.release = single_release,
};
static ssize_t qm_cmd_read(struct file *filp, char __user *buffer,
size_t count, loff_t *pos)
{
char buf[QM_DBG_READ_LEN];
int len;
len = scnprintf(buf, QM_DBG_READ_LEN, "%s\n",
"Please echo help to cmd to get help information");
return simple_read_from_buffer(buffer, count, pos, buf, len);
}
static void *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;
}
static void 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 dump_show(struct hisi_qm *qm, void *info,
unsigned int info_size, char *info_name)
{
struct device *dev = &qm->pdev->dev;
u8 *info_buf, *info_curr = info;
u32 i;
#define BYTE_PER_DW 4
info_buf = kzalloc(info_size, GFP_KERNEL);
if (!info_buf)
return -ENOMEM;
for (i = 0; i < info_size; i++, info_curr++) {
if (i % BYTE_PER_DW == 0)
info_buf[i + 3UL] = *info_curr;
else if (i % BYTE_PER_DW == 1)
info_buf[i + 1UL] = *info_curr;
else if (i % BYTE_PER_DW == 2)
info_buf[i - 1] = *info_curr;
else if (i % BYTE_PER_DW == 3)
info_buf[i - 3] = *info_curr;
}
dev_info(dev, "%s DUMP\n", info_name);
for (i = 0; i < info_size; i += BYTE_PER_DW) {
pr_info("DW%d: %02X%02X %02X%02X\n", i / BYTE_PER_DW,
info_buf[i], info_buf[i + 1UL],
info_buf[i + 2UL], info_buf[i + 3UL]);
}
kfree(info_buf);
return 0;
}
static int qm_dump_sqc_raw(struct hisi_qm *qm, dma_addr_t dma_addr, u16 qp_id)
{
return 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 qm_mb(qm, QM_MB_CMD_CQC, dma_addr, qp_id, 1);
}
static int qm_sqc_dump(struct hisi_qm *qm, const char *s)
{
struct device *dev = &qm->pdev->dev;
struct qm_sqc *sqc, *sqc_curr;
dma_addr_t sqc_dma;
u32 qp_id;
int ret;
if (!s)
return -EINVAL;
ret = kstrtou32(s, 0, &qp_id);
if (ret || qp_id >= qm->qp_num) {
dev_err(dev, "Please input qp num (0-%d)", qm->qp_num - 1);
return -EINVAL;
}
sqc = qm_ctx_alloc(qm, sizeof(*sqc), &sqc_dma);
if (IS_ERR(sqc))
return PTR_ERR(sqc);
ret = qm_dump_sqc_raw(qm, sqc_dma, qp_id);
if (ret) {
down_read(&qm->qps_lock);
if (qm->sqc) {
sqc_curr = qm->sqc + qp_id;
ret = dump_show(qm, sqc_curr, sizeof(*sqc),
"SOFT SQC");
if (ret)
dev_info(dev, "Show soft sqc failed!\n");
}
up_read(&qm->qps_lock);
goto err_free_ctx;
}
ret = dump_show(qm, sqc, sizeof(*sqc), "SQC");
if (ret)
dev_info(dev, "Show hw sqc failed!\n");
err_free_ctx:
qm_ctx_free(qm, sizeof(*sqc), sqc, &sqc_dma);
return ret;
}
static int qm_cqc_dump(struct hisi_qm *qm, const char *s)
{
struct device *dev = &qm->pdev->dev;
struct qm_cqc *cqc, *cqc_curr;
dma_addr_t cqc_dma;
u32 qp_id;
int ret;
if (!s)
return -EINVAL;
ret = kstrtou32(s, 0, &qp_id);
if (ret || qp_id >= qm->qp_num) {
dev_err(dev, "Please input qp num (0-%d)", qm->qp_num - 1);
return -EINVAL;
}
cqc = qm_ctx_alloc(qm, sizeof(*cqc), &cqc_dma);
if (IS_ERR(cqc))
return PTR_ERR(cqc);
ret = qm_dump_cqc_raw(qm, cqc_dma, qp_id);
if (ret) {
down_read(&qm->qps_lock);
if (qm->cqc) {
cqc_curr = qm->cqc + qp_id;
ret = dump_show(qm, cqc_curr, sizeof(*cqc),
"SOFT CQC");
if (ret)
dev_info(dev, "Show soft cqc failed!\n");
}
up_read(&qm->qps_lock);
goto err_free_ctx;
}
ret = dump_show(qm, cqc, sizeof(*cqc), "CQC");
if (ret)
dev_info(dev, "Show hw cqc failed!\n");
err_free_ctx:
qm_ctx_free(qm, sizeof(*cqc), cqc, &cqc_dma);
return ret;
}
static int qm_eqc_aeqc_dump(struct hisi_qm *qm, char *s, size_t size,
int cmd, char *name)
{
struct device *dev = &qm->pdev->dev;
dma_addr_t xeqc_dma;
void *xeqc;
int ret;
if (strsep(&s, " ")) {
dev_err(dev, "Please do not input extra characters!\n");
return -EINVAL;
}
xeqc = qm_ctx_alloc(qm, size, &xeqc_dma);
if (IS_ERR(xeqc))
return PTR_ERR(xeqc);
ret = qm_mb(qm, cmd, xeqc_dma, 0, 1);
if (ret)
goto err_free_ctx;
ret = dump_show(qm, xeqc, size, name);
if (ret)
dev_info(dev, "Show hw %s failed!\n", name);
err_free_ctx:
qm_ctx_free(qm, size, xeqc, &xeqc_dma);
return ret;
}
static int q_dump_param_parse(struct hisi_qm *qm, char *s,
u32 *e_id, u32 *q_id)
{
struct device *dev = &qm->pdev->dev;
unsigned int qp_num = qm->qp_num;
char *presult;
int ret;
presult = strsep(&s, " ");
if (!presult) {
dev_err(dev, "Please input qp number!\n");
return -EINVAL;
}
ret = kstrtou32(presult, 0, q_id);
if (ret || *q_id >= qp_num) {
dev_err(dev, "Please input qp num (0-%d)", qp_num - 1);
return -EINVAL;
}
presult = strsep(&s, " ");
if (!presult) {
dev_err(dev, "Please input sqe number!\n");
return -EINVAL;
}
ret = kstrtou32(presult, 0, e_id);
if (ret || *e_id >= QM_Q_DEPTH) {
dev_err(dev, "Please input sqe num (0-%d)", QM_Q_DEPTH - 1);
return -EINVAL;
}
if (strsep(&s, " ")) {
dev_err(dev, "Please do not input extra characters!\n");
return -EINVAL;
}
return 0;
}
static int qm_sq_dump(struct hisi_qm *qm, char *s)
{
struct device *dev = &qm->pdev->dev;
void *sqe, *sqe_curr;
struct hisi_qp *qp;
u32 qp_id, sqe_id;
int ret;
ret = q_dump_param_parse(qm, s, &sqe_id, &qp_id);
if (ret)
return ret;
sqe = kzalloc(qm->sqe_size * QM_Q_DEPTH, GFP_KERNEL);
if (!sqe)
return -ENOMEM;
qp = &qm->qp_array[qp_id];
memcpy(sqe, qp->sqe, qm->sqe_size * QM_Q_DEPTH);
sqe_curr = sqe + (u32)(sqe_id * qm->sqe_size);
memset(sqe_curr + qm->debug.sqe_mask_offset, QM_SQE_ADDR_MASK,
qm->debug.sqe_mask_len);
ret = dump_show(qm, sqe_curr, qm->sqe_size, "SQE");
if (ret)
dev_info(dev, "Show sqe failed!\n");
kfree(sqe);
return ret;
}
static int qm_cq_dump(struct hisi_qm *qm, char *s)
{
struct device *dev = &qm->pdev->dev;
struct qm_cqe *cqe_curr;
struct hisi_qp *qp;
u32 qp_id, cqe_id;
int ret;
ret = q_dump_param_parse(qm, s, &cqe_id, &qp_id);
if (ret)
return ret;
qp = &qm->qp_array[qp_id];
cqe_curr = qp->cqe + cqe_id;
ret = dump_show(qm, cqe_curr, sizeof(struct qm_cqe), "CQE");
if (ret)
dev_info(dev, "Show cqe failed!\n");
return ret;
}
static int qm_eq_aeq_dump(struct hisi_qm *qm, const char *s,
size_t size, char *name)
{
struct device *dev = &qm->pdev->dev;
void *xeqe;
u32 xeqe_id;
int ret;
if (!s)
return -EINVAL;
ret = kstrtou32(s, 0, &xeqe_id);
if (ret)
return -EINVAL;
if (!strcmp(name, "EQE") && xeqe_id >= QM_EQ_DEPTH) {
dev_err(dev, "Please input eqe num (0-%d)", QM_EQ_DEPTH - 1);
return -EINVAL;
} else if (!strcmp(name, "AEQE") && xeqe_id >= QM_Q_DEPTH) {
dev_err(dev, "Please input aeqe num (0-%d)", QM_Q_DEPTH - 1);
return -EINVAL;
}
down_read(&qm->qps_lock);
if (qm->eqe && !strcmp(name, "EQE")) {
xeqe = qm->eqe + xeqe_id;
} else if (qm->aeqe && !strcmp(name, "AEQE")) {
xeqe = qm->aeqe + xeqe_id;
} else {
ret = -EINVAL;
goto err_unlock;
}
ret = dump_show(qm, xeqe, size, name);
if (ret)
dev_info(dev, "Show %s failed!\n", name);
err_unlock:
up_read(&qm->qps_lock);
return ret;
}
static int qm_dbg_help(struct hisi_qm *qm, char *s)
{
struct device *dev = &qm->pdev->dev;
if (strsep(&s, " ")) {
dev_err(dev, "Please do not input extra characters!\n");
return -EINVAL;
}
dev_info(dev, "available commands:\n");
dev_info(dev, "sqc <num>\n");
dev_info(dev, "cqc <num>\n");
dev_info(dev, "eqc\n");
dev_info(dev, "aeqc\n");
dev_info(dev, "sq <num> <e>\n");
dev_info(dev, "cq <num> <e>\n");
dev_info(dev, "eq <e>\n");
dev_info(dev, "aeq <e>\n");
return 0;
}
static int qm_cmd_write_dump(struct hisi_qm *qm, const char *cmd_buf)
{
struct device *dev = &qm->pdev->dev;
char *presult, *s, *s_tmp;
int ret;
s = kstrdup(cmd_buf, GFP_KERNEL);
if (!s)
return -ENOMEM;
s_tmp = s;
presult = strsep(&s, " ");
if (!presult) {
ret = -EINVAL;
goto err_buffer_free;
}
if (!strcmp(presult, "sqc"))
ret = qm_sqc_dump(qm, s);
else if (!strcmp(presult, "cqc"))
ret = qm_cqc_dump(qm, s);
else if (!strcmp(presult, "eqc"))
ret = qm_eqc_aeqc_dump(qm, s, sizeof(struct qm_eqc),
QM_MB_CMD_EQC, "EQC");
else if (!strcmp(presult, "aeqc"))
ret = qm_eqc_aeqc_dump(qm, s, sizeof(struct qm_aeqc),
QM_MB_CMD_AEQC, "AEQC");
else if (!strcmp(presult, "sq"))
ret = qm_sq_dump(qm, s);
else if (!strcmp(presult, "cq"))
ret = qm_cq_dump(qm, s);
else if (!strcmp(presult, "eq"))
ret = qm_eq_aeq_dump(qm, s, sizeof(struct qm_eqe), "EQE");
else if (!strcmp(presult, "aeq"))
ret = qm_eq_aeq_dump(qm, s, sizeof(struct qm_aeqe), "AEQE");
else if (!strcmp(presult, "help"))
ret = qm_dbg_help(qm, s);
else
ret = -EINVAL;
if (ret)
dev_info(dev, "Please echo help\n");
err_buffer_free:
kfree(s_tmp);
return ret;
}
static ssize_t qm_cmd_write(struct file *filp, const char __user *buffer,
size_t count, loff_t *pos)
{
struct hisi_qm *qm = filp->private_data;
char *cmd_buf, *cmd_buf_tmp;
int ret;
if (*pos)
return 0;
/* Judge if the instance is being reset. */
if (unlikely(atomic_read(&qm->status.flags) == QM_STOP))
return 0;
if (count > QM_DBG_WRITE_LEN)
return -ENOSPC;
cmd_buf = kzalloc(count + 1, GFP_KERNEL);
if (!cmd_buf)
return -ENOMEM;
if (copy_from_user(cmd_buf, buffer, count)) {
kfree(cmd_buf);
return -EFAULT;
}
cmd_buf[count] = '\0';
cmd_buf_tmp = strchr(cmd_buf, '\n');
if (cmd_buf_tmp) {
*cmd_buf_tmp = '\0';
count = cmd_buf_tmp - cmd_buf + 1;
}
ret = qm_cmd_write_dump(qm, cmd_buf);
if (ret) {
kfree(cmd_buf);
return ret;
}
kfree(cmd_buf);
return count;
}
static const struct file_operations qm_cmd_fops = {
.owner = THIS_MODULE,
.open = simple_open,
.read = qm_cmd_read,
.write = qm_cmd_write,
};
static int qm_create_debugfs_file(struct hisi_qm *qm, enum qm_debug_file index)
{
struct dentry *qm_d = qm->debug.qm_d;
struct debugfs_file *file = qm->debug.files + index;
debugfs_create_file(qm_debug_file_name[index], 0600, qm_d, file,
&qm_debug_fops);
file->index = index;
mutex_init(&file->lock);
file->debug = &qm->debug;
return 0;
}
static void qm_hw_error_init_v1(struct hisi_qm *qm, u32 ce, u32 nfe, u32 fe)
{
writel(QM_ABNORMAL_INT_MASK_VALUE, qm->io_base + QM_ABNORMAL_INT_MASK);
}
static void qm_hw_error_init_v2(struct hisi_qm *qm, u32 ce, u32 nfe, u32 fe)
{
u32 irq_enable = ce | nfe | fe;
u32 irq_unmask = ~irq_enable;
qm->error_mask = ce | nfe | fe;
/* clear QM hw residual error source */
writel(QM_ABNORMAL_INT_SOURCE_CLR,
qm->io_base + QM_ABNORMAL_INT_SOURCE);
/* configure error type */
writel(ce, qm->io_base + QM_RAS_CE_ENABLE);
writel(QM_RAS_CE_TIMES_PER_IRQ, qm->io_base + QM_RAS_CE_THRESHOLD);
writel(nfe, qm->io_base + QM_RAS_NFE_ENABLE);
writel(fe, qm->io_base + QM_RAS_FE_ENABLE);
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)
{
writel(QM_ABNORMAL_INT_MASK_VALUE, qm->io_base + QM_ABNORMAL_INT_MASK);
}
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_DB_RANDOM_INVALID) {
writel(error_status, qm->io_base +
QM_ABNORMAL_INT_SOURCE);
return ACC_ERR_RECOVERED;
}
return ACC_ERR_NEED_RESET;
}
return ACC_ERR_RECOVERED;
}
static const struct hisi_qm_hw_ops qm_hw_ops_v1 = {
.qm_db = qm_db_v1,
.get_irq_num = qm_get_irq_num_v1,
.hw_error_init = qm_hw_error_init_v1,
};
static const struct hisi_qm_hw_ops qm_hw_ops_v2 = {
.get_vft = qm_get_vft_v2,
.qm_db = qm_db_v2,
.get_irq_num = qm_get_irq_num_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,
};
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) == QM_Q_DEPTH - 1))
return NULL;
return qp->sqe + sq_tail * qp->qm->sqe_size;
}
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];
memset(qp->cqe, 0, sizeof(struct qm_cqe) * QM_Q_DEPTH);
qp->event_cb = NULL;
qp->req_cb = NULL;
qp->qp_id = qp_id;
qp->alg_type = alg_type;
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.
*/
struct hisi_qp *hisi_qm_create_qp(struct hisi_qm *qm, u8 alg_type)
{
struct hisi_qp *qp;
down_write(&qm->qps_lock);
qp = qm_create_qp_nolock(qm, alg_type);
up_write(&qm->qps_lock);
return qp;
}
EXPORT_SYMBOL_GPL(hisi_qm_create_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.
*/
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);
}
EXPORT_SYMBOL_GPL(hisi_qm_release_qp);
static int qm_qp_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;
struct qm_cqc *cqc;
dma_addr_t sqc_dma;
dma_addr_t cqc_dma;
int ret;
qm_init_qp_status(qp);
sqc = kzalloc(sizeof(struct qm_sqc), GFP_KERNEL);
if (!sqc)
return -ENOMEM;
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;
}
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(QM_Q_DEPTH - 1);
} else {
sqc->dw3 = cpu_to_le32(QM_MK_SQC_DW3_V2(qm->sqe_size));
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));
ret = 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);
if (ret)
return ret;
cqc = kzalloc(sizeof(struct qm_cqc), GFP_KERNEL);
if (!cqc)
return -ENOMEM;
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;
}
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, 4));
cqc->w8 = cpu_to_le16(QM_Q_DEPTH - 1);
} else {
cqc->dw3 = cpu_to_le32(QM_MK_CQC_DW3_V2(4));
cqc->w8 = 0;
}
cqc->dw6 = cpu_to_le32(1 << QM_CQ_PHASE_SHIFT | 1 << QM_CQ_FLAG_SHIFT);
ret = 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_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);
/**
* 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 ECC multi-bit error occurs because the
* master OOO will be blocked.
*/
if (qm->err_status.is_qm_ecc_mbit || qm->err_status.is_dev_ecc_mbit)
return 0;
addr = 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);
}
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");
if (qp->qm->wq)
flush_workqueue(qp->qm->wq);
else
flush_work(&qp->qm->work);
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) % QM_Q_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), 10, 1000))
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);
}
static int hisi_qm_get_available_instances(struct uacce_device *uacce)
{
return hisi_qm_get_free_qp_num(uacce->priv);
}
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;
return 0;
}
static void hisi_qm_uacce_put_queue(struct uacce_queue *q)
{
struct hisi_qp *qp = q->priv;
hisi_qm_cache_wb(qp->qm);
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;
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 (sz > PAGE_SIZE * (QM_DOORBELL_PAGE_NR +
QM_DOORBELL_SQ_CQ_BASE_V2 / PAGE_SIZE))
return -EINVAL;
}
vma->vm_flags |= VM_IO;
return remap_pfn_range(vma, vma->vm_start,
qm->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 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);
return 0;
}
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_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;
} else {
return -EINVAL;
}
return 0;
}
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,
};
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;
struct uacce_interface interface = {
.flags = UACCE_DEV_SVA,
.ops = &uacce_qm_ops,
};
int ret;
ret = strscpy(interface.name, pdev->driver->name,
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;
uacce->algs = qm->algs;
if (qm->ver == QM_HW_V1) {
mmio_page_nr = QM_DOORBELL_PAGE_NR;
uacce->api_ver = HISI_QM_API_VER_BASE;
} else {
mmio_page_nr = QM_DOORBELL_PAGE_NR +
QM_DOORBELL_SQ_CQ_BASE_V2 / PAGE_SIZE;
uacce->api_ver = HISI_QM_API_VER2_BASE;
}
dus_page_nr = (PAGE_SIZE - 1 + qm->sqe_size * QM_Q_DEPTH +
sizeof(struct qm_cqe) * QM_Q_DEPTH) >> 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)
{
down_write(&qm->qps_lock);
if (qm->is_frozen) {
up_write(&qm->qps_lock);
return 0;
}
if (!qm->qp_in_used) {
qm->qp_in_used = qm->qp_num;
qm->is_frozen = true;
up_write(&qm->qps_lock);
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);
}
udelay(REMOVE_WAIT_DELAY);
}
EXPORT_SYMBOL_GPL(hisi_qm_wait_task_finish);
/**
* hisi_qm_get_free_qp_num() - Get free number of qp in qm.
* @qm: The qm which want to get free qp.
*
* This function return free number of qp in qm.
*/
int hisi_qm_get_free_qp_num(struct hisi_qm *qm)
{
int ret;
down_read(&qm->qps_lock);
ret = qm->qp_num - qm->qp_in_used;
up_read(&qm->qps_lock);
return ret;
}
EXPORT_SYMBOL_GPL(hisi_qm_get_free_qp_num);
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->qp_array);
}
static int hisi_qp_memory_init(struct hisi_qm *qm, size_t dma_size, int id)
{
struct device *dev = &qm->pdev->dev;
size_t off = qm->sqe_size * QM_Q_DEPTH;
struct hisi_qp *qp;
qp = &qm->qp_array[id];
qp->qdma.va = dma_alloc_coherent(dev, dma_size, &qp->qdma.dma,
GFP_KERNEL);
if (!qp->qdma.va)
return -ENOMEM;
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->qm = qm;
qp->qp_id = id;
return 0;
}
static int hisi_qm_memory_init(struct hisi_qm *qm)
{
struct device *dev = &qm->pdev->dev;
size_t qp_dma_size, off = 0;
int i, ret = 0;
#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->qdma.size = QMC_ALIGN(sizeof(struct qm_eqe) * QM_EQ_DEPTH) +
QMC_ALIGN(sizeof(struct qm_aeqe) * QM_Q_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)
return -ENOMEM;
QM_INIT_BUF(qm, eqe, QM_EQ_DEPTH);
QM_INIT_BUF(qm, aeqe, QM_Q_DEPTH);
QM_INIT_BUF(qm, sqc, qm->qp_num);
QM_INIT_BUF(qm, cqc, qm->qp_num);
qm->qp_array = kcalloc(qm->qp_num, sizeof(struct hisi_qp), GFP_KERNEL);
if (!qm->qp_array) {
ret = -ENOMEM;
goto err_alloc_qp_array;
}
/* one more page for device or qp statuses */
qp_dma_size = qm->sqe_size * QM_Q_DEPTH +
sizeof(struct qm_cqe) * QM_Q_DEPTH;
qp_dma_size = PAGE_ALIGN(qp_dma_size);
for (i = 0; i < qm->qp_num; i++) {
ret = hisi_qp_memory_init(qm, qp_dma_size, i);
if (ret)
goto err_init_qp_mem;
dev_dbg(dev, "allocate qp dma buf size=%zx)\n", qp_dma_size);
}
return ret;
err_init_qp_mem:
hisi_qp_memory_uninit(qm, i);
err_alloc_qp_array:
dma_free_coherent(dev, qm->qdma.size, qm->qdma.va, qm->qdma.dma);
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
qm->ops = &qm_hw_ops_v2;
pci_set_drvdata(pdev, qm);
mutex_init(&qm->mailbox_lock);
init_rwsem(&qm->qps_lock);
qm->qp_in_used = 0;
qm->is_frozen = false;
}
/**
* 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)
{
struct pci_dev *pdev = qm->pdev;
struct device *dev = &pdev->dev;
down_write(&qm->qps_lock);
if (!qm_avail_state(qm, QM_CLOSE)) {
up_write(&qm->qps_lock);
return;
}
uacce_remove(qm->uacce);
qm->uacce = NULL;
hisi_qp_memory_uninit(qm, qm->qp_num);
idr_destroy(&qm->qp_idr);
if (qm->qdma.va) {
hisi_qm_cache_wb(qm);
dma_free_coherent(dev, qm->qdma.size,
qm->qdma.va, qm->qdma.dma);
memset(&qm->qdma, 0, sizeof(qm->qdma));
}
qm_irq_unregister(qm);
pci_free_irq_vectors(pdev);
iounmap(qm->io_base);
pci_release_mem_regions(pdev);
pci_disable_device(pdev);
up_write(&qm->qps_lock);
}
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.
*/
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);
}
EXPORT_SYMBOL_GPL(hisi_qm_get_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 int qm_eq_ctx_cfg(struct hisi_qm *qm)
{
struct device *dev = &qm->pdev->dev;
struct qm_eqc *eqc;
struct qm_aeqc *aeqc;
dma_addr_t eqc_dma;
dma_addr_t aeqc_dma;
int ret;
qm_init_eq_aeq_status(qm);
eqc = kzalloc(sizeof(struct qm_eqc), GFP_KERNEL);
if (!eqc)
return -ENOMEM;
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;
}
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((QM_EQ_DEPTH - 1) | (1 << QM_EQC_PHASE_SHIFT));
ret = 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);
if (ret)
return ret;
aeqc = kzalloc(sizeof(struct qm_aeqc), GFP_KERNEL);
if (!aeqc)
return -ENOMEM;
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;
}
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((QM_Q_DEPTH - 1) | (1 << QM_EQC_PHASE_SHIFT));
ret = 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 __hisi_qm_start(struct hisi_qm *qm)
{
int ret;
WARN_ON(!qm->qdma.dma);
if (qm->fun_type == QM_HW_PF) {
ret = qm_dev_mem_reset(qm);
if (ret)
return ret;
ret = hisi_qm_set_vft(qm, 0, qm->qp_base, qm->qp_num);
if (ret)
return ret;
}
ret = qm_eq_ctx_cfg(qm);
if (ret)
return ret;
ret = qm_mb(qm, QM_MB_CMD_SQC_BT, qm->sqc_dma, 0, 0);
if (ret)
return ret;
ret = qm_mb(qm, QM_MB_CMD_CQC_BT, qm->cqc_dma, 0, 0);
if (ret)
return ret;
writel(0x0, qm->io_base + QM_VF_EQ_INT_MASK);
writel(0x0, qm->io_base + QM_VF_AEQ_INT_MASK);
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 %d 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);
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;
}
/**
* 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_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) {
ret = qm_stop_started_qp(qm);
if (ret < 0) {
dev_err(dev, "Failed to stop started qp!\n");
goto err_unlock;
}
}
/* Mask eq and aeq irq */
writel(0x1, qm->io_base + QM_VF_EQ_INT_MASK);
writel(0x1, qm->io_base + QM_VF_AEQ_INT_MASK);
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 ssize_t qm_status_read(struct file *filp, char __user *buffer,
size_t count, loff_t *pos)
{
struct hisi_qm *qm = filp->private_data;
char buf[QM_DBG_READ_LEN];
int val, len;
val = atomic_read(&qm->status.flags);
len = scnprintf(buf, QM_DBG_READ_LEN, "%s\n", qm_s[val]);
return simple_read_from_buffer(buffer, count, pos, buf, len);
}
static const struct file_operations qm_status_fops = {
.owner = THIS_MODULE,
.open = simple_open,
.read = qm_status_read,
};
static int qm_debugfs_atomic64_set(void *data, u64 val)
{
if (val)
return -EINVAL;
atomic64_set((atomic64_t *)data, 0);
return 0;
}
static int qm_debugfs_atomic64_get(void *data, u64 *val)
{
*val = atomic64_read((atomic64_t *)data);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(qm_atomic64_ops, qm_debugfs_atomic64_get,
qm_debugfs_atomic64_set, "%llu\n");
/**
* hisi_qm_debug_init() - Initialize qm related debugfs files.
* @qm: The qm for which we want to add debugfs files.
*
* Create qm related debugfs files.
*/
int hisi_qm_debug_init(struct hisi_qm *qm)
{
struct qm_dfx *dfx = &qm->debug.dfx;
struct dentry *qm_d;
void *data;
int i, ret;
qm_d = debugfs_create_dir("qm", qm->debug.debug_root);
qm->debug.qm_d = qm_d;
/* only show this in PF */
if (qm->fun_type == QM_HW_PF)
for (i = CURRENT_Q; i < DEBUG_FILE_NUM; i++)
if (qm_create_debugfs_file(qm, i)) {
ret = -ENOENT;
goto failed_to_create;
}
debugfs_create_file("regs", 0444, qm->debug.qm_d, qm, &qm_regs_fops);
debugfs_create_file("cmd", 0444, qm->debug.qm_d, qm, &qm_cmd_fops);
debugfs_create_file("status", 0444, qm->debug.qm_d, qm,
&qm_status_fops);
for (i = 0; i < ARRAY_SIZE(qm_dfx_files); i++) {
data = (atomic64_t *)((uintptr_t)dfx + qm_dfx_files[i].offset);
debugfs_create_file(qm_dfx_files[i].name,
0644,
qm_d,
data,
&qm_atomic64_ops);
}
return 0;
failed_to_create:
debugfs_remove_recursive(qm_d);
return ret;
}
EXPORT_SYMBOL_GPL(hisi_qm_debug_init);
/**
* hisi_qm_debug_regs_clear() - clear qm debug related registers.
* @qm: The qm for which we want to clear its debug registers.
*/
void hisi_qm_debug_regs_clear(struct hisi_qm *qm)
{
struct qm_dfx_registers *regs;
int i;
/* clear current_q */
writel(0x0, qm->io_base + QM_DFX_SQE_CNT_VF_SQN);
writel(0x0, qm->io_base + QM_DFX_CQE_CNT_VF_CQN);
/*
* these registers are reading and clearing, so clear them after
* reading them.
*/
writel(0x1, qm->io_base + QM_DFX_CNT_CLR_CE);
regs = qm_dfx_regs;
for (i = 0; i < CNT_CYC_REGS_NUM; i++) {
readl(qm->io_base + regs->reg_offset);
regs++;
}
writel(0x0, qm->io_base + QM_DFX_CNT_CLR_CE);
}
EXPORT_SYMBOL_GPL(hisi_qm_debug_regs_clear);
static void qm_hw_error_init(struct hisi_qm *qm)
{
const struct hisi_qm_err_info *err_info = &qm->err_ini->err_info;
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, err_info->ce, err_info->nfe, err_info->fe);
}
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[%d], 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, q_num, i, j;
u32 q_base = qm->qp_num;
int ret;
if (!num_vfs)
return -EINVAL;
remain_q_num = qm->ctrl_qp_num - qm->qp_num;
/* If remain queues not enough, return error. */
if (qm->ctrl_qp_num < qm->qp_num || remain_q_num < num_vfs)
return -EINVAL;
q_num = remain_q_num / num_vfs;
for (i = 1; i <= num_vfs; i++) {
if (i == num_vfs)
q_num += remain_q_num % num_vfs;
ret = hisi_qm_set_vft(qm, i, q_base, q_num);
if (ret) {
for (j = i; j > 0; j--)
hisi_qm_set_vft(qm, j, 0, 0);
return ret;
}
q_base += q_num;
}
return 0;
}
static int 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;
}
/**
* 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;
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);
return 0;
}
num_vfs = min_t(int, max_vfs, total_vfs);
ret = qm_vf_q_assign(qm, num_vfs);
if (ret) {
pci_err(pdev, "Can't assign queues for VF!\n");
return ret;
}
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);
return ret;
}
pci_info(pdev, "VF enabled, vfs_num(=%d)!\n", num_vfs);
return num_vfs;
}
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);
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);
return qm_clear_vft_config(qm);
}
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, 0);
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_ini->err_info.ecc_2bits_mask)
qm->err_status.is_dev_ecc_mbit = true;
if (!qm->err_ini->log_dev_hw_err) {
dev_err(&qm->pdev->dev, "Device doesn't support log hw error!\n");
return ACC_ERR_NEED_RESET;
}
qm->err_ini->log_dev_hw_err(qm, err_sts);
return ACC_ERR_NEED_RESET;
}
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(=%d)!!\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_get_hw_error_status(struct hisi_qm *qm)
{
return readl(qm->io_base + QM_ABNORMAL_INT_STATUS);
}
static int qm_check_req_recv(struct hisi_qm *qm)
{
struct pci_dev *pdev = qm->pdev;
int ret;
u32 val;
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_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 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_reset_prepare_ready(struct hisi_qm *qm)
{
struct pci_dev *pdev = qm->pdev;
struct hisi_qm *pf_qm = pci_get_drvdata(pci_physfn(pdev));
int delay = 0;
/* All reset requests need to be queued for processing */
while (test_and_set_bit(QM_DEV_RESET_FLAG, &pf_qm->reset_flag)) {
msleep(++delay);
if (delay > QM_RESET_WAIT_TIMEOUT)
return -EBUSY;
}
return 0;
}
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;
}
if (qm->vfs_num) {
ret = qm_vf_reset_prepare(qm, QM_SOFT_RESET);
if (ret) {
pci_err(pdev, "Fails to stop VFs!\n");
return ret;
}
}
ret = hisi_qm_stop(qm, QM_SOFT_RESET);
if (ret) {
pci_err(pdev, "Fails to stop QM!\n");
return ret;
}
return 0;
}
static void qm_dev_ecc_mbit_handle(struct hisi_qm *qm)
{
u32 nfe_enb = 0;
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_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;
}
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_ini->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_get_dev_err_status(struct hisi_qm *qm)
{
return qm->err_ini->get_dev_hw_err_status(qm);
}
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_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_ini->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_ini->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);
if (qm->err_ini->open_axi_master_ooo)
qm->err_ini->open_axi_master_ooo(qm);
}
static void qm_restart_done(struct hisi_qm *qm)
{
u32 value;
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_ini->err_info.msi_wr_port;
writel(value, qm->io_base + ACC_AM_CFG_PORT_WR_EN);
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_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);
ret = qm_restart(qm);
if (ret) {
pci_err(pdev, "Failed to start QM!\n");
return ret;
}
if (qm->vfs_num) {
ret = qm_vf_q_assign(qm, qm->vfs_num);
if (ret) {
pci_err(pdev, "Failed to assign queue!\n");
return ret;
}
}
ret = qm_vf_reset_done(qm);
if (ret) {
pci_err(pdev, "Failed to start VFs!\n");
return -EPERM;
}
hisi_qm_dev_err_init(qm);
qm_restart_done(qm);
clear_bit(QM_DEV_RESET_FLAG, &qm->reset_flag);
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)
return ret;
ret = qm_soft_reset(qm);
if (ret) {
pci_err(pdev, "Controller reset failed (%d)\n", ret);
return ret;
}
ret = qm_controller_reset_done(qm);
if (ret)
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;
pci_aer_clear_nonfatal_status(pdev);
/* 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);
/* check the interrupt is ecc-mbit error or not */
static int qm_check_dev_error(struct hisi_qm *qm)
{
int ret;
if (qm->fun_type == QM_HW_VF)
return 0;
ret = qm_get_hw_error_status(qm) & QM_ECC_MBIT;
if (ret)
return ret;
return (qm_get_dev_err_status(qm) &
qm->err_ini->err_info.ecc_2bits_mask);
}
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;
}
if (qm->vfs_num) {
ret = qm_vf_reset_prepare(qm, QM_FLR);
if (ret) {
pci_err(pdev, "Failed to prepare reset, ret = %d.\n",
ret);
return;
}
}
ret = hisi_qm_stop(qm, QM_FLR);
if (ret) {
pci_err(pdev, "Failed to stop QM, ret = %d.\n", ret);
return;
}
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;
}
clear_bit(QM_DEV_RESET_FLAG, &qm->reset_flag);
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;
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;
}
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;
}
if (!qm->vfs_num)
goto flr_done;
ret = qm_vf_q_assign(qm, qm->vfs_num);
if (ret) {
pci_err(pdev, "Failed to assign VFs, ret = %d.\n", ret);
goto flr_done;
}
ret = qm_vf_reset_done(qm);
if (ret) {
pci_err(pdev, "Failed to start VFs, ret = %d.\n", ret);
goto flr_done;
}
}
flr_done:
if (qm_flr_reset_complete(pdev))
pci_info(pdev, "FLR reset complete\n");
}
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)
schedule_work(&qm->rst_work);
return IRQ_HANDLED;
}
static int qm_irq_register(struct hisi_qm *qm)
{
struct pci_dev *pdev = qm->pdev;
int ret;
ret = request_irq(pci_irq_vector(pdev, QM_EQ_EVENT_IRQ_VECTOR),
qm_irq, IRQF_SHARED, qm->dev_name, qm);
if (ret)
return ret;
if (qm->ver != QM_HW_V1) {
ret = request_irq(pci_irq_vector(pdev, QM_AEQ_EVENT_IRQ_VECTOR),
qm_aeq_irq, IRQF_SHARED, qm->dev_name, qm);
if (ret)
goto err_aeq_irq;
if (qm->fun_type == QM_HW_PF) {
ret = request_irq(pci_irq_vector(pdev,
QM_ABNORMAL_EVENT_IRQ_VECTOR),
qm_abnormal_irq, IRQF_SHARED,
qm->dev_name, qm);
if (ret)
goto err_abonormal_irq;
}
}
return 0;
err_abonormal_irq:
free_irq(pci_irq_vector(pdev, QM_AEQ_EVENT_IRQ_VECTOR), qm);
err_aeq_irq:
free_irq(pci_irq_vector(pdev, QM_EQ_EVENT_IRQ_VECTOR), qm);
return ret;
}
/**
* 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;
/* reset pcie device controller */
ret = qm_controller_reset(qm);
if (ret)
dev_err(&qm->pdev->dev, "controller reset failed (%d)\n", ret);
}
/**
* 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)
{
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 (flag) {
ret = qm_list->register_to_crypto();
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 (list_empty(&qm_list->list))
qm_list->unregister_from_crypto();
}
EXPORT_SYMBOL_GPL(hisi_qm_alg_unregister);
/**
* 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;
unsigned int num_vec;
int ret;
hisi_qm_pre_init(qm);
ret = qm_alloc_uacce(qm);
if (ret < 0)
dev_warn(&pdev->dev, "fail to alloc uacce (%d)\n", ret);
ret = pci_enable_device_mem(pdev);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to enable device mem!\n");
goto err_remove_uacce;
}
ret = pci_request_mem_regions(pdev, qm->dev_name);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to request mem regions!\n");
goto err_disable_pcidev;
}
qm->phys_base = pci_resource_start(pdev, PCI_BAR_2);
qm->phys_size = pci_resource_len(qm->pdev, PCI_BAR_2);
qm->io_base = ioremap(qm->phys_base, qm->phys_size);
if (!qm->io_base) {
ret = -EIO;
goto err_release_mem_regions;
}
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
if (ret < 0)
goto err_iounmap;
pci_set_master(pdev);
if (!qm->ops->get_irq_num) {
ret = -EOPNOTSUPP;
goto err_iounmap;
}
num_vec = qm->ops->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_iounmap;
}
ret = qm_irq_register(qm);
if (ret)
goto err_free_irq_vectors;
if (qm->fun_type == QM_HW_VF && qm->ver != QM_HW_V1) {
/* v2 starts to support get vft by mailbox */
ret = hisi_qm_get_vft(qm, &qm->qp_base, &qm->qp_num);
if (ret)
goto err_irq_unregister;
}
ret = hisi_qm_memory_init(qm);
if (ret)
goto err_irq_unregister;
INIT_WORK(&qm->work, qm_work_process);
if (qm->fun_type == QM_HW_PF)
INIT_WORK(&qm->rst_work, hisi_qm_controller_reset);
atomic_set(&qm->status.flags, QM_INIT);
return 0;
err_irq_unregister:
qm_irq_unregister(qm);
err_free_irq_vectors:
pci_free_irq_vectors(pdev);
err_iounmap:
iounmap(qm->io_base);
err_release_mem_regions:
pci_release_mem_regions(pdev);
err_disable_pcidev:
pci_disable_device(pdev);
err_remove_uacce:
uacce_remove(qm->uacce);
qm->uacce = NULL;
return ret;
}
EXPORT_SYMBOL_GPL(hisi_qm_init);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Zhou Wang <wangzhou1@hisilicon.com>");
MODULE_DESCRIPTION("HiSilicon Accelerator queue manager driver");
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