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linux/drivers/misc/habanalabs/common/sysfs.c
Greg Kroah-Hartman 65a9bde6ed Linux 5.8-rc7
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Merge 5.8-rc7 into char-misc-next

This should resolve the merge/build issues reported when trying to
create linux-next.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-27 11:49:37 +02:00

443 lines
9.6 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2016-2019 HabanaLabs, Ltd.
* All Rights Reserved.
*/
#include "habanalabs.h"
#include <linux/pci.h>
long hl_get_frequency(struct hl_device *hdev, u32 pll_index, bool curr)
{
struct armcp_packet pkt;
long result;
int rc;
memset(&pkt, 0, sizeof(pkt));
if (curr)
pkt.ctl = cpu_to_le32(ARMCP_PACKET_FREQUENCY_CURR_GET <<
ARMCP_PKT_CTL_OPCODE_SHIFT);
else
pkt.ctl = cpu_to_le32(ARMCP_PACKET_FREQUENCY_GET <<
ARMCP_PKT_CTL_OPCODE_SHIFT);
pkt.pll_index = cpu_to_le32(pll_index);
rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
0, &result);
if (rc) {
dev_err(hdev->dev,
"Failed to get frequency of PLL %d, error %d\n",
pll_index, rc);
result = rc;
}
return result;
}
void hl_set_frequency(struct hl_device *hdev, u32 pll_index, u64 freq)
{
struct armcp_packet pkt;
int rc;
memset(&pkt, 0, sizeof(pkt));
pkt.ctl = cpu_to_le32(ARMCP_PACKET_FREQUENCY_SET <<
ARMCP_PKT_CTL_OPCODE_SHIFT);
pkt.pll_index = cpu_to_le32(pll_index);
pkt.value = cpu_to_le64(freq);
rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
0, NULL);
if (rc)
dev_err(hdev->dev,
"Failed to set frequency to PLL %d, error %d\n",
pll_index, rc);
}
u64 hl_get_max_power(struct hl_device *hdev)
{
struct armcp_packet pkt;
long result;
int rc;
memset(&pkt, 0, sizeof(pkt));
pkt.ctl = cpu_to_le32(ARMCP_PACKET_MAX_POWER_GET <<
ARMCP_PKT_CTL_OPCODE_SHIFT);
rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
0, &result);
if (rc) {
dev_err(hdev->dev, "Failed to get max power, error %d\n", rc);
result = rc;
}
return result;
}
void hl_set_max_power(struct hl_device *hdev, u64 value)
{
struct armcp_packet pkt;
int rc;
memset(&pkt, 0, sizeof(pkt));
pkt.ctl = cpu_to_le32(ARMCP_PACKET_MAX_POWER_SET <<
ARMCP_PKT_CTL_OPCODE_SHIFT);
pkt.value = cpu_to_le64(value);
rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
0, NULL);
if (rc)
dev_err(hdev->dev, "Failed to set max power, error %d\n", rc);
}
static ssize_t uboot_ver_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", hdev->asic_prop.uboot_ver);
}
static ssize_t armcp_kernel_ver_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
return sprintf(buf, "%s", hdev->asic_prop.armcp_info.kernel_version);
}
static ssize_t armcp_ver_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", hdev->asic_prop.armcp_info.armcp_version);
}
static ssize_t cpld_ver_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
return sprintf(buf, "0x%08x\n",
hdev->asic_prop.armcp_info.cpld_version);
}
static ssize_t infineon_ver_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
return sprintf(buf, "0x%04x\n",
hdev->asic_prop.armcp_info.infineon_version);
}
static ssize_t fuse_ver_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", hdev->asic_prop.armcp_info.fuse_version);
}
static ssize_t thermal_ver_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
return sprintf(buf, "%s", hdev->asic_prop.armcp_info.thermal_version);
}
static ssize_t preboot_btl_ver_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", hdev->asic_prop.preboot_ver);
}
static ssize_t soft_reset_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct hl_device *hdev = dev_get_drvdata(dev);
long value;
int rc;
rc = kstrtoul(buf, 0, &value);
if (rc) {
count = -EINVAL;
goto out;
}
if (!hdev->supports_soft_reset) {
dev_err(hdev->dev, "Device does not support soft-reset\n");
goto out;
}
dev_warn(hdev->dev, "Soft-Reset requested through sysfs\n");
hl_device_reset(hdev, false, false);
out:
return count;
}
static ssize_t hard_reset_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct hl_device *hdev = dev_get_drvdata(dev);
long value;
int rc;
rc = kstrtoul(buf, 0, &value);
if (rc) {
count = -EINVAL;
goto out;
}
dev_warn(hdev->dev, "Hard-Reset requested through sysfs\n");
hl_device_reset(hdev, true, false);
out:
return count;
}
static ssize_t device_type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
char *str;
switch (hdev->asic_type) {
case ASIC_GOYA:
str = "GOYA";
break;
case ASIC_GAUDI:
str = "GAUDI";
break;
default:
dev_err(hdev->dev, "Unrecognized ASIC type %d\n",
hdev->asic_type);
return -EINVAL;
}
return sprintf(buf, "%s\n", str);
}
static ssize_t pci_addr_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
return sprintf(buf, "%04x:%02x:%02x.%x\n",
pci_domain_nr(hdev->pdev->bus),
hdev->pdev->bus->number,
PCI_SLOT(hdev->pdev->devfn),
PCI_FUNC(hdev->pdev->devfn));
}
static ssize_t status_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
char *str;
if (atomic_read(&hdev->in_reset))
str = "In reset";
else if (hdev->disabled)
str = "Malfunction";
else
str = "Operational";
return sprintf(buf, "%s\n", str);
}
static ssize_t soft_reset_cnt_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", hdev->soft_reset_cnt);
}
static ssize_t hard_reset_cnt_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", hdev->hard_reset_cnt);
}
static ssize_t max_power_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
long val;
if (hl_device_disabled_or_in_reset(hdev))
return -ENODEV;
val = hl_get_max_power(hdev);
return sprintf(buf, "%lu\n", val);
}
static ssize_t max_power_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct hl_device *hdev = dev_get_drvdata(dev);
unsigned long value;
int rc;
if (hl_device_disabled_or_in_reset(hdev)) {
count = -ENODEV;
goto out;
}
rc = kstrtoul(buf, 0, &value);
if (rc) {
count = -EINVAL;
goto out;
}
hdev->max_power = value;
hl_set_max_power(hdev, value);
out:
return count;
}
static ssize_t eeprom_read_handler(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf, loff_t offset,
size_t max_size)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct hl_device *hdev = dev_get_drvdata(dev);
char *data;
int rc;
if (hl_device_disabled_or_in_reset(hdev))
return -ENODEV;
if (!max_size)
return -EINVAL;
data = kzalloc(max_size, GFP_KERNEL);
if (!data)
return -ENOMEM;
rc = hdev->asic_funcs->get_eeprom_data(hdev, data, max_size);
if (rc)
goto out;
memcpy(buf, data, max_size);
out:
kfree(data);
return max_size;
}
static DEVICE_ATTR_RO(armcp_kernel_ver);
static DEVICE_ATTR_RO(armcp_ver);
static DEVICE_ATTR_RO(cpld_ver);
static DEVICE_ATTR_RO(device_type);
static DEVICE_ATTR_RO(fuse_ver);
static DEVICE_ATTR_WO(hard_reset);
static DEVICE_ATTR_RO(hard_reset_cnt);
static DEVICE_ATTR_RO(infineon_ver);
static DEVICE_ATTR_RW(max_power);
static DEVICE_ATTR_RO(pci_addr);
static DEVICE_ATTR_RO(preboot_btl_ver);
static DEVICE_ATTR_WO(soft_reset);
static DEVICE_ATTR_RO(soft_reset_cnt);
static DEVICE_ATTR_RO(status);
static DEVICE_ATTR_RO(thermal_ver);
static DEVICE_ATTR_RO(uboot_ver);
static struct bin_attribute bin_attr_eeprom = {
.attr = {.name = "eeprom", .mode = (0444)},
.size = PAGE_SIZE,
.read = eeprom_read_handler
};
static struct attribute *hl_dev_attrs[] = {
&dev_attr_armcp_kernel_ver.attr,
&dev_attr_armcp_ver.attr,
&dev_attr_cpld_ver.attr,
&dev_attr_device_type.attr,
&dev_attr_fuse_ver.attr,
&dev_attr_hard_reset.attr,
&dev_attr_hard_reset_cnt.attr,
&dev_attr_infineon_ver.attr,
&dev_attr_max_power.attr,
&dev_attr_pci_addr.attr,
&dev_attr_preboot_btl_ver.attr,
&dev_attr_soft_reset.attr,
&dev_attr_soft_reset_cnt.attr,
&dev_attr_status.attr,
&dev_attr_thermal_ver.attr,
&dev_attr_uboot_ver.attr,
NULL,
};
static struct bin_attribute *hl_dev_bin_attrs[] = {
&bin_attr_eeprom,
NULL
};
static struct attribute_group hl_dev_attr_group = {
.attrs = hl_dev_attrs,
.bin_attrs = hl_dev_bin_attrs,
};
static struct attribute_group hl_dev_clks_attr_group;
static const struct attribute_group *hl_dev_attr_groups[] = {
&hl_dev_attr_group,
&hl_dev_clks_attr_group,
NULL,
};
int hl_sysfs_init(struct hl_device *hdev)
{
int rc;
if (hdev->asic_type == ASIC_GOYA)
hdev->pm_mng_profile = PM_AUTO;
else
hdev->pm_mng_profile = PM_MANUAL;
hdev->max_power = hdev->asic_prop.max_power_default;
hdev->asic_funcs->add_device_attr(hdev, &hl_dev_clks_attr_group);
rc = device_add_groups(hdev->dev, hl_dev_attr_groups);
if (rc) {
dev_err(hdev->dev,
"Failed to add groups to device, error %d\n", rc);
return rc;
}
return 0;
}
void hl_sysfs_fini(struct hl_device *hdev)
{
device_remove_groups(hdev->dev, hl_dev_attr_groups);
}