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path: root/drivers/misc/cxl/sysfs.c
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Diffstat (limited to 'drivers/misc/cxl/sysfs.c')
-rw-r--r--drivers/misc/cxl/sysfs.c123
1 files changed, 91 insertions, 32 deletions
diff --git a/drivers/misc/cxl/sysfs.c b/drivers/misc/cxl/sysfs.c
index 038af5d45145..25913c08794c 100644
--- a/drivers/misc/cxl/sysfs.c
+++ b/drivers/misc/cxl/sysfs.c
@@ -69,7 +69,7 @@ static ssize_t reset_adapter_store(struct device *device,
if ((rc != 1) || (val != 1))
return -EINVAL;
- if ((rc = cxl_reset(adapter)))
+ if ((rc = cxl_ops->adapter_reset(adapter)))
return rc;
return count;
}
@@ -165,7 +165,7 @@ static ssize_t pp_mmio_off_show(struct device *device,
{
struct cxl_afu *afu = to_afu_chardev_m(device);
- return scnprintf(buf, PAGE_SIZE, "%llu\n", afu->pp_offset);
+ return scnprintf(buf, PAGE_SIZE, "%llu\n", afu->native->pp_offset);
}
static ssize_t pp_mmio_len_show(struct device *device,
@@ -211,7 +211,7 @@ static ssize_t reset_store_afu(struct device *device,
goto err;
}
- if ((rc = __cxl_afu_reset(afu)))
+ if ((rc = cxl_ops->afu_reset(afu)))
goto err;
rc = count;
@@ -253,8 +253,14 @@ static ssize_t irqs_max_store(struct device *device,
if (irqs_max < afu->pp_irqs)
return -EINVAL;
- if (irqs_max > afu->adapter->user_irqs)
- return -EINVAL;
+ if (cpu_has_feature(CPU_FTR_HVMODE)) {
+ if (irqs_max > afu->adapter->user_irqs)
+ return -EINVAL;
+ } else {
+ /* pHyp sets a per-AFU limit */
+ if (irqs_max > afu->guest->max_ints)
+ return -EINVAL;
+ }
afu->irqs_max = irqs_max;
return count;
@@ -348,7 +354,7 @@ static ssize_t mode_store(struct device *device, struct device_attribute *attr,
}
/*
- * cxl_afu_deactivate_mode needs to be done outside the lock, prevent
+ * afu_deactivate_mode needs to be done outside the lock, prevent
* other contexts coming in before we are ready:
*/
old_mode = afu->current_mode;
@@ -357,9 +363,9 @@ static ssize_t mode_store(struct device *device, struct device_attribute *attr,
mutex_unlock(&afu->contexts_lock);
- if ((rc = _cxl_afu_deactivate_mode(afu, old_mode)))
+ if ((rc = cxl_ops->afu_deactivate_mode(afu, old_mode)))
return rc;
- if ((rc = cxl_afu_activate_mode(afu, mode)))
+ if ((rc = cxl_ops->afu_activate_mode(afu, mode)))
return rc;
return count;
@@ -388,7 +394,7 @@ static ssize_t afu_eb_read(struct file *filp, struct kobject *kobj,
{
struct cxl_afu *afu = to_cxl_afu(kobj_to_dev(kobj));
- return cxl_afu_read_err_buffer(afu, buf, off, count);
+ return cxl_ops->afu_read_err_buffer(afu, buf, off, count);
}
static struct device_attribute afu_attrs[] = {
@@ -405,24 +411,39 @@ static struct device_attribute afu_attrs[] = {
int cxl_sysfs_adapter_add(struct cxl *adapter)
{
+ struct device_attribute *dev_attr;
int i, rc;
for (i = 0; i < ARRAY_SIZE(adapter_attrs); i++) {
- if ((rc = device_create_file(&adapter->dev, &adapter_attrs[i])))
- goto err;
+ dev_attr = &adapter_attrs[i];
+ if (cxl_ops->support_attributes(dev_attr->attr.name,
+ CXL_ADAPTER_ATTRS)) {
+ if ((rc = device_create_file(&adapter->dev, dev_attr)))
+ goto err;
+ }
}
return 0;
err:
- for (i--; i >= 0; i--)
- device_remove_file(&adapter->dev, &adapter_attrs[i]);
+ for (i--; i >= 0; i--) {
+ dev_attr = &adapter_attrs[i];
+ if (cxl_ops->support_attributes(dev_attr->attr.name,
+ CXL_ADAPTER_ATTRS))
+ device_remove_file(&adapter->dev, dev_attr);
+ }
return rc;
}
+
void cxl_sysfs_adapter_remove(struct cxl *adapter)
{
+ struct device_attribute *dev_attr;
int i;
- for (i = 0; i < ARRAY_SIZE(adapter_attrs); i++)
- device_remove_file(&adapter->dev, &adapter_attrs[i]);
+ for (i = 0; i < ARRAY_SIZE(adapter_attrs); i++) {
+ dev_attr = &adapter_attrs[i];
+ if (cxl_ops->support_attributes(dev_attr->attr.name,
+ CXL_ADAPTER_ATTRS))
+ device_remove_file(&adapter->dev, dev_attr);
+ }
}
struct afu_config_record {
@@ -468,10 +489,12 @@ static ssize_t afu_read_config(struct file *filp, struct kobject *kobj,
struct afu_config_record *cr = to_cr(kobj);
struct cxl_afu *afu = to_cxl_afu(kobj_to_dev(kobj->parent));
- u64 i, j, val;
+ u64 i, j, val, rc;
for (i = 0; i < count;) {
- val = cxl_afu_cr_read64(afu, cr->cr, off & ~0x7);
+ rc = cxl_ops->afu_cr_read64(afu, cr->cr, off & ~0x7, &val);
+ if (rc)
+ val = ~0ULL;
for (j = off & 0x7; j < 8 && i < count; i++, j++, off++)
buf[i] = (val >> (j * 8)) & 0xff;
}
@@ -516,14 +539,22 @@ static struct afu_config_record *cxl_sysfs_afu_new_cr(struct cxl_afu *afu, int c
return ERR_PTR(-ENOMEM);
cr->cr = cr_idx;
- cr->device = cxl_afu_cr_read16(afu, cr_idx, PCI_DEVICE_ID);
- cr->vendor = cxl_afu_cr_read16(afu, cr_idx, PCI_VENDOR_ID);
- cr->class = cxl_afu_cr_read32(afu, cr_idx, PCI_CLASS_REVISION) >> 8;
+
+ rc = cxl_ops->afu_cr_read16(afu, cr_idx, PCI_DEVICE_ID, &cr->device);
+ if (rc)
+ goto err;
+ rc = cxl_ops->afu_cr_read16(afu, cr_idx, PCI_VENDOR_ID, &cr->vendor);
+ if (rc)
+ goto err;
+ rc = cxl_ops->afu_cr_read32(afu, cr_idx, PCI_CLASS_REVISION, &cr->class);
+ if (rc)
+ goto err;
+ cr->class >>= 8;
/*
* Export raw AFU PCIe like config record. For now this is read only by
* root - we can expand that later to be readable by non-root and maybe
- * even writable provided we have a good use-case. Once we suport
+ * even writable provided we have a good use-case. Once we support
* exposing AFUs through a virtual PHB they will get that for free from
* Linux' PCI infrastructure, but until then it's not clear that we
* need it for anything since the main use case is just identifying
@@ -561,6 +592,7 @@ err:
void cxl_sysfs_afu_remove(struct cxl_afu *afu)
{
+ struct device_attribute *dev_attr;
struct afu_config_record *cr, *tmp;
int i;
@@ -568,8 +600,12 @@ void cxl_sysfs_afu_remove(struct cxl_afu *afu)
if (afu->eb_len)
device_remove_bin_file(&afu->dev, &afu->attr_eb);
- for (i = 0; i < ARRAY_SIZE(afu_attrs); i++)
- device_remove_file(&afu->dev, &afu_attrs[i]);
+ for (i = 0; i < ARRAY_SIZE(afu_attrs); i++) {
+ dev_attr = &afu_attrs[i];
+ if (cxl_ops->support_attributes(dev_attr->attr.name,
+ CXL_AFU_ATTRS))
+ device_remove_file(&afu->dev, &afu_attrs[i]);
+ }
list_for_each_entry_safe(cr, tmp, &afu->crs, list) {
sysfs_remove_bin_file(&cr->kobj, &cr->config_attr);
@@ -579,14 +615,19 @@ void cxl_sysfs_afu_remove(struct cxl_afu *afu)
int cxl_sysfs_afu_add(struct cxl_afu *afu)
{
+ struct device_attribute *dev_attr;
struct afu_config_record *cr;
int i, rc;
INIT_LIST_HEAD(&afu->crs);
for (i = 0; i < ARRAY_SIZE(afu_attrs); i++) {
- if ((rc = device_create_file(&afu->dev, &afu_attrs[i])))
- goto err;
+ dev_attr = &afu_attrs[i];
+ if (cxl_ops->support_attributes(dev_attr->attr.name,
+ CXL_AFU_ATTRS)) {
+ if ((rc = device_create_file(&afu->dev, &afu_attrs[i])))
+ goto err;
+ }
}
/* conditionally create the add the binary file for error info buffer */
@@ -625,32 +666,50 @@ err:
/* reset the eb_len as we havent created the bin attr */
afu->eb_len = 0;
- for (i--; i >= 0; i--)
+ for (i--; i >= 0; i--) {
+ dev_attr = &afu_attrs[i];
+ if (cxl_ops->support_attributes(dev_attr->attr.name,
+ CXL_AFU_ATTRS))
device_remove_file(&afu->dev, &afu_attrs[i]);
+ }
return rc;
}
int cxl_sysfs_afu_m_add(struct cxl_afu *afu)
{
+ struct device_attribute *dev_attr;
int i, rc;
for (i = 0; i < ARRAY_SIZE(afu_master_attrs); i++) {
- if ((rc = device_create_file(afu->chardev_m, &afu_master_attrs[i])))
- goto err;
+ dev_attr = &afu_master_attrs[i];
+ if (cxl_ops->support_attributes(dev_attr->attr.name,
+ CXL_AFU_MASTER_ATTRS)) {
+ if ((rc = device_create_file(afu->chardev_m, &afu_master_attrs[i])))
+ goto err;
+ }
}
return 0;
err:
- for (i--; i >= 0; i--)
- device_remove_file(afu->chardev_m, &afu_master_attrs[i]);
+ for (i--; i >= 0; i--) {
+ dev_attr = &afu_master_attrs[i];
+ if (cxl_ops->support_attributes(dev_attr->attr.name,
+ CXL_AFU_MASTER_ATTRS))
+ device_remove_file(afu->chardev_m, &afu_master_attrs[i]);
+ }
return rc;
}
void cxl_sysfs_afu_m_remove(struct cxl_afu *afu)
{
+ struct device_attribute *dev_attr;
int i;
- for (i = 0; i < ARRAY_SIZE(afu_master_attrs); i++)
- device_remove_file(afu->chardev_m, &afu_master_attrs[i]);
+ for (i = 0; i < ARRAY_SIZE(afu_master_attrs); i++) {
+ dev_attr = &afu_master_attrs[i];
+ if (cxl_ops->support_attributes(dev_attr->attr.name,
+ CXL_AFU_MASTER_ATTRS))
+ device_remove_file(afu->chardev_m, &afu_master_attrs[i]);
+ }
}
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-31 02:27:14 +0000