crypto: hisilicon - Add debugfs for HPRE
HiSilicon HPRE engine driver uses debugfs to provide debug information, the usage can be found in /Documentation/ABI/testing/debugfs-hisi-hpre. Signed-off-by: Zaibo Xu <xuzaibo@huawei.com> Signed-off-by: Hui Tang <tanghui20@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Zaibo Xu
Herbert Xu
parent
b492f82fce
commit
8489741516
|
|
@ -9,11 +9,45 @@
|
|||
#define HPRE_SQE_SIZE sizeof(struct hpre_sqe)
|
||||
#define HPRE_PF_DEF_Q_NUM 64
|
||||
#define HPRE_PF_DEF_Q_BASE 0
|
||||
#define HPRE_CLUSTERS_NUM 4
|
||||
|
||||
enum {
|
||||
HPRE_CLUSTER0,
|
||||
HPRE_CLUSTER1,
|
||||
HPRE_CLUSTER2,
|
||||
HPRE_CLUSTER3,
|
||||
HPRE_CLUSTERS_NUM,
|
||||
};
|
||||
|
||||
enum hpre_ctrl_dbgfs_file {
|
||||
HPRE_CURRENT_QM,
|
||||
HPRE_CLEAR_ENABLE,
|
||||
HPRE_CLUSTER_CTRL,
|
||||
HPRE_DEBUG_FILE_NUM,
|
||||
};
|
||||
|
||||
#define HPRE_DEBUGFS_FILE_NUM (HPRE_DEBUG_FILE_NUM + HPRE_CLUSTERS_NUM - 1)
|
||||
|
||||
struct hpre_debugfs_file {
|
||||
int index;
|
||||
enum hpre_ctrl_dbgfs_file type;
|
||||
spinlock_t lock;
|
||||
struct hpre_debug *debug;
|
||||
};
|
||||
|
||||
/*
|
||||
* One HPRE controller has one PF and multiple VFs, some global configurations
|
||||
* which PF has need this structure.
|
||||
* Just relevant for PF.
|
||||
*/
|
||||
struct hpre_debug {
|
||||
struct dentry *debug_root;
|
||||
struct hpre_debugfs_file files[HPRE_DEBUGFS_FILE_NUM];
|
||||
};
|
||||
|
||||
struct hpre {
|
||||
struct hisi_qm qm;
|
||||
struct list_head list;
|
||||
struct hpre_debug debug;
|
||||
u32 num_vfs;
|
||||
unsigned long status;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@
|
|||
#include <linux/acpi.h>
|
||||
#include <linux/aer.h>
|
||||
#include <linux/bitops.h>
|
||||
#include <linux/debugfs.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/kernel.h>
|
||||
|
|
@ -84,6 +85,7 @@
|
|||
static LIST_HEAD(hpre_list);
|
||||
static DEFINE_MUTEX(hpre_list_lock);
|
||||
static const char hpre_name[] = "hisi_hpre";
|
||||
static struct dentry *hpre_debugfs_root;
|
||||
static const struct pci_device_id hpre_dev_ids[] = {
|
||||
{ PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, HPRE_PCI_DEVICE_ID) },
|
||||
{ PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, HPRE_PCI_VF_DEVICE_ID) },
|
||||
|
|
@ -97,6 +99,12 @@ struct hpre_hw_error {
|
|||
const char *msg;
|
||||
};
|
||||
|
||||
static const char * const hpre_debug_file_name[] = {
|
||||
[HPRE_CURRENT_QM] = "current_qm",
|
||||
[HPRE_CLEAR_ENABLE] = "rdclr_en",
|
||||
[HPRE_CLUSTER_CTRL] = "cluster_ctrl",
|
||||
};
|
||||
|
||||
static const struct hpre_hw_error hpre_hw_errors[] = {
|
||||
{ .int_msk = BIT(0), .msg = "hpre_ecc_1bitt_err" },
|
||||
{ .int_msk = BIT(1), .msg = "hpre_ecc_2bit_err" },
|
||||
|
|
@ -113,6 +121,42 @@ static const struct hpre_hw_error hpre_hw_errors[] = {
|
|||
{ /* sentinel */ }
|
||||
};
|
||||
|
||||
static const u64 hpre_cluster_offsets[] = {
|
||||
[HPRE_CLUSTER0] =
|
||||
HPRE_CLSTR_BASE + HPRE_CLUSTER0 * HPRE_CLSTR_ADDR_INTRVL,
|
||||
[HPRE_CLUSTER1] =
|
||||
HPRE_CLSTR_BASE + HPRE_CLUSTER1 * HPRE_CLSTR_ADDR_INTRVL,
|
||||
[HPRE_CLUSTER2] =
|
||||
HPRE_CLSTR_BASE + HPRE_CLUSTER2 * HPRE_CLSTR_ADDR_INTRVL,
|
||||
[HPRE_CLUSTER3] =
|
||||
HPRE_CLSTR_BASE + HPRE_CLUSTER3 * HPRE_CLSTR_ADDR_INTRVL,
|
||||
};
|
||||
|
||||
static struct debugfs_reg32 hpre_cluster_dfx_regs[] = {
|
||||
{"CORES_EN_STATUS ", HPRE_CORE_EN_OFFSET},
|
||||
{"CORES_INI_CFG ", HPRE_CORE_INI_CFG_OFFSET},
|
||||
{"CORES_INI_STATUS ", HPRE_CORE_INI_STATUS_OFFSET},
|
||||
{"CORES_HTBT_WARN ", HPRE_CORE_HTBT_WARN_OFFSET},
|
||||
{"CORES_IS_SCHD ", HPRE_CORE_IS_SCHD_OFFSET},
|
||||
};
|
||||
|
||||
static struct debugfs_reg32 hpre_com_dfx_regs[] = {
|
||||
{"READ_CLR_EN ", HPRE_CTRL_CNT_CLR_CE},
|
||||
{"AXQOS ", HPRE_VFG_AXQOS},
|
||||
{"AWUSR_CFG ", HPRE_AWUSR_FP_CFG},
|
||||
{"QM_ARUSR_MCFG1 ", QM_ARUSER_M_CFG_1},
|
||||
{"QM_AWUSR_MCFG1 ", QM_AWUSER_M_CFG_1},
|
||||
{"BD_ENDIAN ", HPRE_BD_ENDIAN},
|
||||
{"ECC_CHECK_CTRL ", HPRE_ECC_BYPASS},
|
||||
{"RAS_INT_WIDTH ", HPRE_RAS_WIDTH_CFG},
|
||||
{"POISON_BYPASS ", HPRE_POISON_BYPASS},
|
||||
{"BD_ARUSER ", HPRE_BD_ARUSR_CFG},
|
||||
{"BD_AWUSER ", HPRE_BD_AWUSR_CFG},
|
||||
{"DATA_ARUSER ", HPRE_DATA_RUSER_CFG},
|
||||
{"DATA_AWUSER ", HPRE_DATA_WUSER_CFG},
|
||||
{"INT_STATUS ", HPRE_INT_STATUS},
|
||||
};
|
||||
|
||||
static int hpre_pf_q_num_set(const char *val, const struct kernel_param *kp)
|
||||
{
|
||||
struct pci_dev *pdev;
|
||||
|
|
@ -284,6 +328,27 @@ static int hpre_set_user_domain_and_cache(struct hpre *hpre)
|
|||
return ret;
|
||||
}
|
||||
|
||||
static void hpre_cnt_regs_clear(struct hisi_qm *qm)
|
||||
{
|
||||
unsigned long offset;
|
||||
int i;
|
||||
|
||||
/* clear current_qm */
|
||||
writel(0x0, qm->io_base + QM_DFX_MB_CNT_VF);
|
||||
writel(0x0, qm->io_base + QM_DFX_DB_CNT_VF);
|
||||
|
||||
/* clear clusterX/cluster_ctrl */
|
||||
for (i = 0; i < HPRE_CLUSTERS_NUM; i++) {
|
||||
offset = HPRE_CLSTR_BASE + i * HPRE_CLSTR_ADDR_INTRVL;
|
||||
writel(0x0, qm->io_base + offset + HPRE_CLUSTER_INQURY);
|
||||
}
|
||||
|
||||
/* clear rdclr_en */
|
||||
writel(0x0, qm->io_base + HPRE_CTRL_CNT_CLR_CE);
|
||||
|
||||
hisi_qm_debug_regs_clear(qm);
|
||||
}
|
||||
|
||||
static void hpre_hw_error_disable(struct hpre *hpre)
|
||||
{
|
||||
struct hisi_qm *qm = &hpre->qm;
|
||||
|
|
@ -303,6 +368,335 @@ static void hpre_hw_error_enable(struct hpre *hpre)
|
|||
writel(HPRE_HAC_RAS_FE_ENABLE, qm->io_base + HPRE_RAS_FE_ENB);
|
||||
}
|
||||
|
||||
static inline struct hisi_qm *hpre_file_to_qm(struct hpre_debugfs_file *file)
|
||||
{
|
||||
struct hpre *hpre = container_of(file->debug, struct hpre, debug);
|
||||
|
||||
return &hpre->qm;
|
||||
}
|
||||
|
||||
static u32 hpre_current_qm_read(struct hpre_debugfs_file *file)
|
||||
{
|
||||
struct hisi_qm *qm = hpre_file_to_qm(file);
|
||||
|
||||
return readl(qm->io_base + QM_DFX_MB_CNT_VF);
|
||||
}
|
||||
|
||||
static int hpre_current_qm_write(struct hpre_debugfs_file *file, u32 val)
|
||||
{
|
||||
struct hisi_qm *qm = hpre_file_to_qm(file);
|
||||
struct hpre_debug *debug = file->debug;
|
||||
struct hpre *hpre = container_of(debug, struct hpre, debug);
|
||||
u32 num_vfs = hpre->num_vfs;
|
||||
u32 vfq_num, tmp;
|
||||
|
||||
|
||||
if (val > num_vfs)
|
||||
return -EINVAL;
|
||||
|
||||
/* According PF or VF Dev ID to calculation curr_qm_qp_num and store */
|
||||
if (val == 0) {
|
||||
qm->debug.curr_qm_qp_num = qm->qp_num;
|
||||
} else {
|
||||
vfq_num = (qm->ctrl_qp_num - qm->qp_num) / num_vfs;
|
||||
if (val == num_vfs) {
|
||||
qm->debug.curr_qm_qp_num =
|
||||
qm->ctrl_qp_num - qm->qp_num - (num_vfs - 1) * vfq_num;
|
||||
} else {
|
||||
qm->debug.curr_qm_qp_num = vfq_num;
|
||||
}
|
||||
}
|
||||
|
||||
writel(val, qm->io_base + QM_DFX_MB_CNT_VF);
|
||||
writel(val, qm->io_base + QM_DFX_DB_CNT_VF);
|
||||
|
||||
tmp = val |
|
||||
(readl(qm->io_base + QM_DFX_SQE_CNT_VF_SQN) & CURRENT_Q_MASK);
|
||||
writel(tmp, qm->io_base + QM_DFX_SQE_CNT_VF_SQN);
|
||||
|
||||
tmp = val |
|
||||
(readl(qm->io_base + QM_DFX_CQE_CNT_VF_CQN) & CURRENT_Q_MASK);
|
||||
writel(tmp, qm->io_base + QM_DFX_CQE_CNT_VF_CQN);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static u32 hpre_clear_enable_read(struct hpre_debugfs_file *file)
|
||||
{
|
||||
struct hisi_qm *qm = hpre_file_to_qm(file);
|
||||
|
||||
return readl(qm->io_base + HPRE_CTRL_CNT_CLR_CE) &
|
||||
HPRE_CTRL_CNT_CLR_CE_BIT;
|
||||
}
|
||||
|
||||
static int hpre_clear_enable_write(struct hpre_debugfs_file *file, u32 val)
|
||||
{
|
||||
struct hisi_qm *qm = hpre_file_to_qm(file);
|
||||
u32 tmp;
|
||||
|
||||
if (val != 1 && val != 0)
|
||||
return -EINVAL;
|
||||
|
||||
tmp = (readl(qm->io_base + HPRE_CTRL_CNT_CLR_CE) &
|
||||
~HPRE_CTRL_CNT_CLR_CE_BIT) | val;
|
||||
writel(tmp, qm->io_base + HPRE_CTRL_CNT_CLR_CE);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static u32 hpre_cluster_inqry_read(struct hpre_debugfs_file *file)
|
||||
{
|
||||
struct hisi_qm *qm = hpre_file_to_qm(file);
|
||||
int cluster_index = file->index - HPRE_CLUSTER_CTRL;
|
||||
unsigned long offset = HPRE_CLSTR_BASE +
|
||||
cluster_index * HPRE_CLSTR_ADDR_INTRVL;
|
||||
|
||||
return readl(qm->io_base + offset + HPRE_CLSTR_ADDR_INQRY_RSLT);
|
||||
}
|
||||
|
||||
static int hpre_cluster_inqry_write(struct hpre_debugfs_file *file, u32 val)
|
||||
{
|
||||
struct hisi_qm *qm = hpre_file_to_qm(file);
|
||||
int cluster_index = file->index - HPRE_CLUSTER_CTRL;
|
||||
unsigned long offset = HPRE_CLSTR_BASE + cluster_index *
|
||||
HPRE_CLSTR_ADDR_INTRVL;
|
||||
|
||||
writel(val, qm->io_base + offset + HPRE_CLUSTER_INQURY);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static ssize_t hpre_ctrl_debug_read(struct file *filp, char __user *buf,
|
||||
size_t count, loff_t *pos)
|
||||
{
|
||||
struct hpre_debugfs_file *file = filp->private_data;
|
||||
char tbuf[HPRE_DBGFS_VAL_MAX_LEN];
|
||||
u32 val;
|
||||
int ret;
|
||||
|
||||
spin_lock_irq(&file->lock);
|
||||
switch (file->type) {
|
||||
case HPRE_CURRENT_QM:
|
||||
val = hpre_current_qm_read(file);
|
||||
break;
|
||||
case HPRE_CLEAR_ENABLE:
|
||||
val = hpre_clear_enable_read(file);
|
||||
break;
|
||||
case HPRE_CLUSTER_CTRL:
|
||||
val = hpre_cluster_inqry_read(file);
|
||||
break;
|
||||
default:
|
||||
spin_unlock_irq(&file->lock);
|
||||
return -EINVAL;
|
||||
}
|
||||
spin_unlock_irq(&file->lock);
|
||||
ret = sprintf(tbuf, "%u\n", val);
|
||||
return simple_read_from_buffer(buf, count, pos, tbuf, ret);
|
||||
}
|
||||
|
||||
static ssize_t hpre_ctrl_debug_write(struct file *filp, const char __user *buf,
|
||||
size_t count, loff_t *pos)
|
||||
{
|
||||
struct hpre_debugfs_file *file = filp->private_data;
|
||||
char tbuf[HPRE_DBGFS_VAL_MAX_LEN];
|
||||
unsigned long val;
|
||||
int len, ret;
|
||||
|
||||
if (*pos != 0)
|
||||
return 0;
|
||||
|
||||
if (count >= HPRE_DBGFS_VAL_MAX_LEN)
|
||||
return -ENOSPC;
|
||||
|
||||
len = simple_write_to_buffer(tbuf, HPRE_DBGFS_VAL_MAX_LEN - 1,
|
||||
pos, buf, count);
|
||||
if (len < 0)
|
||||
return len;
|
||||
|
||||
tbuf[len] = '\0';
|
||||
if (kstrtoul(tbuf, 0, &val))
|
||||
return -EFAULT;
|
||||
|
||||
spin_lock_irq(&file->lock);
|
||||
switch (file->type) {
|
||||
case HPRE_CURRENT_QM:
|
||||
ret = hpre_current_qm_write(file, val);
|
||||
if (ret)
|
||||
goto err_input;
|
||||
break;
|
||||
case HPRE_CLEAR_ENABLE:
|
||||
ret = hpre_clear_enable_write(file, val);
|
||||
if (ret)
|
||||
goto err_input;
|
||||
break;
|
||||
case HPRE_CLUSTER_CTRL:
|
||||
ret = hpre_cluster_inqry_write(file, val);
|
||||
if (ret)
|
||||
goto err_input;
|
||||
break;
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
goto err_input;
|
||||
}
|
||||
spin_unlock_irq(&file->lock);
|
||||
|
||||
return count;
|
||||
|
||||
err_input:
|
||||
spin_unlock_irq(&file->lock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static const struct file_operations hpre_ctrl_debug_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = simple_open,
|
||||
.read = hpre_ctrl_debug_read,
|
||||
.write = hpre_ctrl_debug_write,
|
||||
};
|
||||
|
||||
static int hpre_create_debugfs_file(struct hpre_debug *dbg, struct dentry *dir,
|
||||
enum hpre_ctrl_dbgfs_file type, int indx)
|
||||
{
|
||||
struct dentry *tmp, *file_dir;
|
||||
|
||||
if (dir)
|
||||
file_dir = dir;
|
||||
else
|
||||
file_dir = dbg->debug_root;
|
||||
|
||||
if (type >= HPRE_DEBUG_FILE_NUM)
|
||||
return -EINVAL;
|
||||
|
||||
spin_lock_init(&dbg->files[indx].lock);
|
||||
dbg->files[indx].debug = dbg;
|
||||
dbg->files[indx].type = type;
|
||||
dbg->files[indx].index = indx;
|
||||
tmp = debugfs_create_file(hpre_debug_file_name[type], 0600, file_dir,
|
||||
dbg->files + indx, &hpre_ctrl_debug_fops);
|
||||
if (!tmp)
|
||||
return -ENOENT;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hpre_pf_comm_regs_debugfs_init(struct hpre_debug *debug)
|
||||
{
|
||||
struct hpre *hpre = container_of(debug, struct hpre, debug);
|
||||
struct hisi_qm *qm = &hpre->qm;
|
||||
struct device *dev = &qm->pdev->dev;
|
||||
struct debugfs_regset32 *regset;
|
||||
struct dentry *tmp;
|
||||
|
||||
regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL);
|
||||
if (!regset)
|
||||
return -ENOMEM;
|
||||
|
||||
regset->regs = hpre_com_dfx_regs;
|
||||
regset->nregs = ARRAY_SIZE(hpre_com_dfx_regs);
|
||||
regset->base = qm->io_base;
|
||||
|
||||
tmp = debugfs_create_regset32("regs", 0444, debug->debug_root, regset);
|
||||
if (!tmp)
|
||||
return -ENOENT;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hpre_cluster_debugfs_init(struct hpre_debug *debug)
|
||||
{
|
||||
struct hpre *hpre = container_of(debug, struct hpre, debug);
|
||||
struct hisi_qm *qm = &hpre->qm;
|
||||
struct device *dev = &qm->pdev->dev;
|
||||
char buf[HPRE_DBGFS_VAL_MAX_LEN];
|
||||
struct debugfs_regset32 *regset;
|
||||
struct dentry *tmp_d, *tmp;
|
||||
int i, ret;
|
||||
|
||||
for (i = 0; i < HPRE_CLUSTERS_NUM; i++) {
|
||||
sprintf(buf, "cluster%d", i);
|
||||
|
||||
tmp_d = debugfs_create_dir(buf, debug->debug_root);
|
||||
if (!tmp_d)
|
||||
return -ENOENT;
|
||||
|
||||
regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL);
|
||||
if (!regset)
|
||||
return -ENOMEM;
|
||||
|
||||
regset->regs = hpre_cluster_dfx_regs;
|
||||
regset->nregs = ARRAY_SIZE(hpre_cluster_dfx_regs);
|
||||
regset->base = qm->io_base + hpre_cluster_offsets[i];
|
||||
|
||||
tmp = debugfs_create_regset32("regs", 0444, tmp_d, regset);
|
||||
if (!tmp)
|
||||
return -ENOENT;
|
||||
ret = hpre_create_debugfs_file(debug, tmp_d, HPRE_CLUSTER_CTRL,
|
||||
i + HPRE_CLUSTER_CTRL);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hpre_ctrl_debug_init(struct hpre_debug *debug)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = hpre_create_debugfs_file(debug, NULL, HPRE_CURRENT_QM,
|
||||
HPRE_CURRENT_QM);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = hpre_create_debugfs_file(debug, NULL, HPRE_CLEAR_ENABLE,
|
||||
HPRE_CLEAR_ENABLE);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = hpre_pf_comm_regs_debugfs_init(debug);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return hpre_cluster_debugfs_init(debug);
|
||||
}
|
||||
|
||||
static int hpre_debugfs_init(struct hpre *hpre)
|
||||
{
|
||||
struct hisi_qm *qm = &hpre->qm;
|
||||
struct device *dev = &qm->pdev->dev;
|
||||
struct dentry *dir;
|
||||
int ret;
|
||||
|
||||
dir = debugfs_create_dir(dev_name(dev), hpre_debugfs_root);
|
||||
if (!dir)
|
||||
return -ENOENT;
|
||||
|
||||
qm->debug.debug_root = dir;
|
||||
|
||||
ret = hisi_qm_debug_init(qm);
|
||||
if (ret)
|
||||
goto failed_to_create;
|
||||
|
||||
if (qm->pdev->device == HPRE_PCI_DEVICE_ID) {
|
||||
hpre->debug.debug_root = dir;
|
||||
ret = hpre_ctrl_debug_init(&hpre->debug);
|
||||
if (ret)
|
||||
goto failed_to_create;
|
||||
}
|
||||
return 0;
|
||||
|
||||
failed_to_create:
|
||||
debugfs_remove_recursive(qm->debug.debug_root);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void hpre_debugfs_exit(struct hpre *hpre)
|
||||
{
|
||||
struct hisi_qm *qm = &hpre->qm;
|
||||
|
||||
debugfs_remove_recursive(qm->debug.debug_root);
|
||||
}
|
||||
|
||||
static int hpre_qm_pre_init(struct hisi_qm *qm, struct pci_dev *pdev)
|
||||
{
|
||||
enum qm_hw_ver rev_id;
|
||||
|
|
@ -390,6 +784,10 @@ static int hpre_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|||
if (ret)
|
||||
goto err_with_err_init;
|
||||
|
||||
ret = hpre_debugfs_init(hpre);
|
||||
if (ret)
|
||||
dev_warn(&pdev->dev, "init debugfs fail!\n");
|
||||
|
||||
hpre_add_to_list(hpre);
|
||||
|
||||
ret = hpre_algs_register();
|
||||
|
|
@ -529,6 +927,12 @@ static void hpre_remove(struct pci_dev *pdev)
|
|||
return;
|
||||
}
|
||||
}
|
||||
if (qm->fun_type == QM_HW_PF) {
|
||||
hpre_cnt_regs_clear(qm);
|
||||
qm->debug.curr_qm_qp_num = 0;
|
||||
}
|
||||
|
||||
hpre_debugfs_exit(hpre);
|
||||
hisi_qm_stop(qm);
|
||||
if (qm->fun_type == QM_HW_PF)
|
||||
hpre_hw_error_disable(hpre);
|
||||
|
|
@ -604,13 +1008,32 @@ static struct pci_driver hpre_pci_driver = {
|
|||
.err_handler = &hpre_err_handler,
|
||||
};
|
||||
|
||||
static void hpre_register_debugfs(void)
|
||||
{
|
||||
if (!debugfs_initialized())
|
||||
return;
|
||||
|
||||
hpre_debugfs_root = debugfs_create_dir(hpre_name, NULL);
|
||||
if (IS_ERR_OR_NULL(hpre_debugfs_root))
|
||||
hpre_debugfs_root = NULL;
|
||||
}
|
||||
|
||||
static void hpre_unregister_debugfs(void)
|
||||
{
|
||||
debugfs_remove_recursive(hpre_debugfs_root);
|
||||
}
|
||||
|
||||
static int __init hpre_init(void)
|
||||
{
|
||||
int ret;
|
||||
|
||||
hpre_register_debugfs();
|
||||
|
||||
ret = pci_register_driver(&hpre_pci_driver);
|
||||
if (ret)
|
||||
if (ret) {
|
||||
hpre_unregister_debugfs();
|
||||
pr_err("hpre: can't register hisi hpre driver.\n");
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -618,6 +1041,7 @@ static int __init hpre_init(void)
|
|||
static void __exit hpre_exit(void)
|
||||
{
|
||||
pci_unregister_driver(&hpre_pci_driver);
|
||||
hpre_unregister_debugfs();
|
||||
}
|
||||
|
||||
module_init(hpre_init);
|
||||
|
|
|
|||
Loading…
Reference in New Issue