diff options
| -rw-r--r-- | drivers/gpu/drm/xe/xe_configfs.c | 62 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_configfs.h | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_device.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pci.c | 19 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_survivability_mode.c | 35 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_survivability_mode.h | 1 |
6 files changed, 108 insertions, 19 deletions
diff --git a/drivers/gpu/drm/xe/xe_configfs.c b/drivers/gpu/drm/xe/xe_configfs.c index 48a9f428bda9..cb9f175c89a1 100644 --- a/drivers/gpu/drm/xe/xe_configfs.c +++ b/drivers/gpu/drm/xe/xe_configfs.c @@ -164,6 +164,68 @@ static struct configfs_subsystem xe_configfs = { }, }; +static struct xe_config_device *configfs_find_group(struct pci_dev *pdev) +{ + struct config_item *item; + char name[64]; + + snprintf(name, sizeof(name), "%04x:%02x:%02x.%x", pci_domain_nr(pdev->bus), + pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); + + mutex_lock(&xe_configfs.su_mutex); + item = config_group_find_item(&xe_configfs.su_group, name); + mutex_unlock(&xe_configfs.su_mutex); + + if (!item) + return NULL; + + return to_xe_config_device(item); +} + +/** + * xe_configfs_get_survivability_mode - get configfs survivability mode attribute + * @pdev: pci device + * + * find the configfs group that belongs to the pci device and return + * the survivability mode attribute + * + * Return: survivability mode if config group is found, false otherwise + */ +bool xe_configfs_get_survivability_mode(struct pci_dev *pdev) +{ + struct xe_config_device *dev = configfs_find_group(pdev); + bool mode; + + if (!dev) + return false; + + mode = dev->survivability_mode; + config_item_put(&dev->group.cg_item); + + return mode; +} + +/** + * xe_configfs_clear_survivability_mode - clear configfs survivability mode attribute + * @pdev: pci device + * + * find the configfs group that belongs to the pci device and clear survivability + * mode attribute + */ +void xe_configfs_clear_survivability_mode(struct pci_dev *pdev) +{ + struct xe_config_device *dev = configfs_find_group(pdev); + + if (!dev) + return; + + mutex_lock(&dev->lock); + dev->survivability_mode = 0; + mutex_unlock(&dev->lock); + + config_item_put(&dev->group.cg_item); +} + int __init xe_configfs_init(void) { struct config_group *root = &xe_configfs.su_group; diff --git a/drivers/gpu/drm/xe/xe_configfs.h b/drivers/gpu/drm/xe/xe_configfs.h index 5532320818e4..d7d041ec2611 100644 --- a/drivers/gpu/drm/xe/xe_configfs.h +++ b/drivers/gpu/drm/xe/xe_configfs.h @@ -5,12 +5,20 @@ #ifndef _XE_CONFIGFS_H_ #define _XE_CONFIGFS_H_ +#include <linux/types.h> + +struct pci_dev; + #if IS_ENABLED(CONFIG_CONFIGFS_FS) int xe_configfs_init(void); void xe_configfs_exit(void); +bool xe_configfs_get_survivability_mode(struct pci_dev *pdev); +void xe_configfs_clear_survivability_mode(struct pci_dev *pdev); #else static inline int xe_configfs_init(void) { return 0; }; static inline void xe_configfs_exit(void) {}; +static inline bool xe_configfs_get_survivability_mode(struct pci_dev *pdev) { return false; }; +static inline void xe_configfs_clear_survivability_mode(struct pci_dev *pdev) {}; #endif #endif diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c index d8e227ddf255..75e753e0a682 100644 --- a/drivers/gpu/drm/xe/xe_device.c +++ b/drivers/gpu/drm/xe/xe_device.c @@ -712,7 +712,7 @@ int xe_device_probe_early(struct xe_device *xe) sriov_update_device_info(xe); err = xe_pcode_probe_early(xe); - if (err) { + if (err || xe_survivability_mode_is_requested(xe)) { int save_err = err; /* diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c index 780287692e61..07fe994f2a80 100644 --- a/drivers/gpu/drm/xe/xe_pci.c +++ b/drivers/gpu/drm/xe/xe_pci.c @@ -812,18 +812,17 @@ static int xe_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) return err; err = xe_device_probe_early(xe); - if (err) { - /* - * In Boot Survivability mode, no drm card is exposed and driver - * is loaded with bare minimum to allow for firmware to be - * flashed through mei. If early probe failed, but it managed to - * enable survivability mode, return success. - */ - if (xe_survivability_mode_is_enabled(xe)) - return 0; + /* + * In Boot Survivability mode, no drm card is exposed and driver + * is loaded with bare minimum to allow for firmware to be + * flashed through mei. Return success, if survivability mode + * is enabled due to pcode failure or configfs being set + */ + if (xe_survivability_mode_is_enabled(xe)) + return 0; + if (err) return err; - } err = xe_info_init(xe, desc); if (err) diff --git a/drivers/gpu/drm/xe/xe_survivability_mode.c b/drivers/gpu/drm/xe/xe_survivability_mode.c index 399c06890b0b..1f710b3fc599 100644 --- a/drivers/gpu/drm/xe/xe_survivability_mode.c +++ b/drivers/gpu/drm/xe/xe_survivability_mode.c @@ -10,6 +10,7 @@ #include <linux/pci.h> #include <linux/sysfs.h> +#include "xe_configfs.h" #include "xe_device.h" #include "xe_gt.h" #include "xe_heci_gsc.h" @@ -145,6 +146,7 @@ static void xe_survivability_mode_fini(void *arg) struct pci_dev *pdev = to_pci_dev(xe->drm.dev); struct device *dev = &pdev->dev; + xe_configfs_clear_survivability_mode(pdev); sysfs_remove_file(&dev->kobj, &dev_attr_survivability_mode.attr); } @@ -198,23 +200,40 @@ bool xe_survivability_mode_is_enabled(struct xe_device *xe) return xe->survivability.mode; } -/* - * survivability_mode_requested - check if it's possible to enable - * survivability mode and that was requested by firmware +/** + * xe_survivability_mode_is_requested - check if it's possible to enable survivability + * mode that was requested by firmware or userspace + * @xe: xe device instance * - * This function reads the boot status from Pcode. + * This function reads configfs and boot status from Pcode. * * Return: true if platform support is available and boot status indicates - * failure, false otherwise. + * failure or if survivability mode is requested, false otherwise. */ -static bool survivability_mode_requested(struct xe_device *xe) +bool xe_survivability_mode_is_requested(struct xe_device *xe) { struct xe_survivability *survivability = &xe->survivability; struct xe_mmio *mmio = xe_root_tile_mmio(xe); + struct pci_dev *pdev = to_pci_dev(xe->drm.dev); u32 data; + bool survivability_mode; + + if (!IS_DGFX(xe) || IS_SRIOV_VF(xe)) + return false; + + survivability_mode = xe_configfs_get_survivability_mode(pdev); - if (!IS_DGFX(xe) || xe->info.platform < XE_BATTLEMAGE || IS_SRIOV_VF(xe)) + if (xe->info.platform < XE_BATTLEMAGE) { + if (survivability_mode) { + dev_err(&pdev->dev, "Survivability Mode is not supported on this card\n"); + xe_configfs_clear_survivability_mode(pdev); + } return false; + } + + /* Enable survivability mode if set via configfs */ + if (survivability_mode) + return true; data = xe_mmio_read32(mmio, PCODE_SCRATCH(0)); survivability->boot_status = REG_FIELD_GET(BOOT_STATUS, data); @@ -238,7 +257,7 @@ int xe_survivability_mode_enable(struct xe_device *xe) struct xe_survivability_info *info; struct pci_dev *pdev = to_pci_dev(xe->drm.dev); - if (!survivability_mode_requested(xe)) + if (!xe_survivability_mode_is_requested(xe)) return 0; survivability->size = MAX_SCRATCH_MMIO; diff --git a/drivers/gpu/drm/xe/xe_survivability_mode.h b/drivers/gpu/drm/xe/xe_survivability_mode.h index d7e64885570d..02231c2bf008 100644 --- a/drivers/gpu/drm/xe/xe_survivability_mode.h +++ b/drivers/gpu/drm/xe/xe_survivability_mode.h @@ -12,5 +12,6 @@ struct xe_device; int xe_survivability_mode_enable(struct xe_device *xe); bool xe_survivability_mode_is_enabled(struct xe_device *xe); +bool xe_survivability_mode_is_requested(struct xe_device *xe); #endif /* _XE_SURVIVABILITY_MODE_H_ */ |