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crypto: hisilicon - support runtime PM for accelerator device

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Add runtime PM support for Kunpeng930 accelerator device.

Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Weili Qian
2021-08-13 17:50:07 +08:00
committed by Herbert Xu
parent d7ea53395b
commit 607c191b37
5 changed files with 298 additions and 31 deletions
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36
drivers/crypto/hisilicon/sec2/sec_main.c
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@@ -11,6 +11,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/pm_runtime.h>
#include <linux/seq_file.h>
#include <linux/topology.h>
#include <linux/uacce.h>
@@ -584,9 +585,14 @@ static ssize_t sec_debug_read(struct file *filp, char __user *buf,
{
struct sec_debug_file *file = filp->private_data;
char tbuf[SEC_DBGFS_VAL_MAX_LEN];
struct hisi_qm *qm = file->qm;
u32 val;
int ret;
ret = hisi_qm_get_dfx_access(qm);
if (ret)
return ret;
spin_lock_irq(&file->lock);
switch (file->index) {
@@ -594,14 +600,19 @@ static ssize_t sec_debug_read(struct file *filp, char __user *buf,
val = sec_clear_enable_read(file);
break;
default:
spin_unlock_irq(&file->lock);
return -EINVAL;
goto err_input;
}
spin_unlock_irq(&file->lock);
ret = snprintf(tbuf, SEC_DBGFS_VAL_MAX_LEN, "%u\n", val);
hisi_qm_put_dfx_access(qm);
ret = snprintf(tbuf, SEC_DBGFS_VAL_MAX_LEN, "%u\n", val);
return simple_read_from_buffer(buf, count, pos, tbuf, ret);
err_input:
spin_unlock_irq(&file->lock);
hisi_qm_put_dfx_access(qm);
return -EINVAL;
}
static ssize_t sec_debug_write(struct file *filp, const char __user *buf,
@@ -609,6 +620,7 @@ static ssize_t sec_debug_write(struct file *filp, const char __user *buf,
{
struct sec_debug_file *file = filp->private_data;
char tbuf[SEC_DBGFS_VAL_MAX_LEN];
struct hisi_qm *qm = file->qm;
unsigned long val;
int len, ret;
@@ -627,6 +639,10 @@ static ssize_t sec_debug_write(struct file *filp, const char __user *buf,
if (kstrtoul(tbuf, 0, &val))
return -EFAULT;
ret = hisi_qm_get_dfx_access(qm);
if (ret)
return ret;
spin_lock_irq(&file->lock);
switch (file->index) {
@@ -640,12 +656,11 @@ static ssize_t sec_debug_write(struct file *filp, const char __user *buf,
goto err_input;
}
spin_unlock_irq(&file->lock);
return count;
ret = count;
err_input:
spin_unlock_irq(&file->lock);
hisi_qm_put_dfx_access(qm);
return ret;
}
@@ -703,6 +718,7 @@ static int sec_core_debug_init(struct hisi_qm *qm)
regset->regs = sec_dfx_regs;
regset->nregs = ARRAY_SIZE(sec_dfx_regs);
regset->base = qm->io_base;
regset->dev = dev;
if (qm->pdev->device == SEC_PF_PCI_DEVICE_ID)
debugfs_create_file("regs", 0444, tmp_d, regset, &sec_regs_fops);
@@ -1013,6 +1029,8 @@ static int sec_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto err_alg_unregister;
}
hisi_qm_pm_init(qm);
return 0;
err_alg_unregister:
@@ -1032,6 +1050,7 @@ static void sec_remove(struct pci_dev *pdev)
{
struct hisi_qm *qm = pci_get_drvdata(pdev);
hisi_qm_pm_uninit(qm);
hisi_qm_wait_task_finish(qm, &sec_devices);
if (qm->qp_num >= ctx_q_num)
hisi_qm_alg_unregister(qm, &sec_devices);
@@ -1051,6 +1070,10 @@ static void sec_remove(struct pci_dev *pdev)
sec_qm_uninit(qm);
}
static const struct dev_pm_ops sec_pm_ops = {
SET_RUNTIME_PM_OPS(hisi_qm_suspend, hisi_qm_resume, NULL)
};
static const struct pci_error_handlers sec_err_handler = {
.error_detected = hisi_qm_dev_err_detected,
.slot_reset = hisi_qm_dev_slot_reset,
@@ -1066,6 +1089,7 @@ static struct pci_driver sec_pci_driver = {
.err_handler = &sec_err_handler,
.sriov_configure = hisi_qm_sriov_configure,
.shutdown = hisi_qm_dev_shutdown,
.driver.pm = &sec_pm_ops,
};
static void sec_register_debugfs(void)