diff options
Diffstat (limited to 'drivers/dma/idxd/idxd.h')
| -rw-r--r-- | drivers/dma/idxd/idxd.h | 168 |
1 files changed, 139 insertions, 29 deletions
diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h index 76014c14f473..26482c7d4c3a 100644 --- a/drivers/dma/idxd/idxd.h +++ b/drivers/dma/idxd/idxd.h @@ -8,12 +8,18 @@ #include <linux/percpu-rwsem.h> #include <linux/wait.h> #include <linux/cdev.h> +#include <linux/idr.h> +#include <linux/pci.h> +#include <linux/perf_event.h> #include "registers.h" #define IDXD_DRIVER_VERSION "1.00" extern struct kmem_cache *idxd_desc_pool; +struct idxd_device; +struct idxd_wq; + #define IDXD_REG_TIMEOUT 50 #define IDXD_DRAIN_TIMEOUT 5000 @@ -25,6 +31,7 @@ enum idxd_type { }; #define IDXD_NAME_SIZE 128 +#define IDXD_PMU_EVENT_MAX 64 struct idxd_device_driver { struct device_driver drv; @@ -33,6 +40,7 @@ struct idxd_device_driver { struct idxd_irq_entry { struct idxd_device *idxd; int id; + int vector; struct llist_head pending_llist; struct list_head work_list; /* @@ -56,6 +64,31 @@ struct idxd_group { int tc_b; }; +struct idxd_pmu { + struct idxd_device *idxd; + + struct perf_event *event_list[IDXD_PMU_EVENT_MAX]; + int n_events; + + DECLARE_BITMAP(used_mask, IDXD_PMU_EVENT_MAX); + + struct pmu pmu; + char name[IDXD_NAME_SIZE]; + int cpu; + + int n_counters; + int counter_width; + int n_event_categories; + + bool per_counter_caps_supported; + unsigned long supported_event_categories; + + unsigned long supported_filters; + int n_filters; + + struct hlist_node cpuhp_node; +}; + #define IDXD_MAX_PRIORITY 0xf enum idxd_wq_state { @@ -75,10 +108,10 @@ enum idxd_wq_type { }; struct idxd_cdev { + struct idxd_wq *wq; struct cdev cdev; - struct device *dev; + struct device dev; int minor; - struct wait_queue_head err_queue; }; #define IDXD_ALLOCATED_BATCH_SIZE 128U @@ -96,10 +129,18 @@ enum idxd_complete_type { IDXD_COMPLETE_DEV_FAIL, }; +struct idxd_dma_chan { + struct dma_chan chan; + struct idxd_wq *wq; +}; + struct idxd_wq { void __iomem *portal; + struct percpu_ref wq_active; + struct completion wq_dead; struct device conf_dev; - struct idxd_cdev idxd_cdev; + struct idxd_cdev *idxd_cdev; + struct wait_queue_head err_queue; struct idxd_device *idxd; int id; enum idxd_wq_type type; @@ -125,7 +166,7 @@ struct idxd_wq { int compls_size; struct idxd_desc **descs; struct sbitmap_queue sbq; - struct dma_chan dma_chan; + struct idxd_dma_chan *idxd_chan; char name[WQ_NAME_SIZE + 1]; u64 max_xfer_bytes; u32 max_batch_size; @@ -147,6 +188,7 @@ struct idxd_hw { union group_cap_reg group_cap; union engine_cap_reg engine_cap; struct opcap opcap; + u32 cmd_cap; }; enum idxd_device_state { @@ -162,9 +204,22 @@ enum idxd_device_flag { IDXD_FLAG_PASID_ENABLED, }; -struct idxd_device { +struct idxd_dma_dev { + struct idxd_device *idxd; + struct dma_device dma; +}; + +struct idxd_driver_data { + const char *name_prefix; enum idxd_type type; + struct device_type *dev_type; + int compl_size; + int align; +}; + +struct idxd_device { struct device conf_dev; + struct idxd_driver_data *data; struct list_head list; struct idxd_hw hw; enum idxd_device_state state; @@ -177,10 +232,11 @@ struct idxd_device { void __iomem *reg_base; spinlock_t dev_lock; /* spinlock for device */ + spinlock_t cmd_lock; /* spinlock for device commands */ struct completion *cmd_done; - struct idxd_group *groups; - struct idxd_wq *wqs; - struct idxd_engine *engines; + struct idxd_group **groups; + struct idxd_wq **wqs; + struct idxd_engine **engines; struct iommu_sva *sva; unsigned int pasid; @@ -202,17 +258,19 @@ struct idxd_device { int token_limit; int nr_tokens; /* non-reserved tokens */ unsigned int wqcfg_size; - int compl_size; union sw_err_reg sw_err; wait_queue_head_t cmd_waitq; - struct msix_entry *msix_entries; int num_wq_irqs; struct idxd_irq_entry *irq_entries; - struct dma_device dma_dev; + struct idxd_dma_dev *idxd_dma; struct workqueue_struct *wq; struct work_struct work; + + int *int_handles; + + struct idxd_pmu *idxd_pmu; }; /* IDXD software descriptor */ @@ -232,6 +290,7 @@ struct idxd_desc { struct list_head list; int id; int cpu; + unsigned int vector; struct idxd_wq *wq; }; @@ -242,6 +301,44 @@ extern struct bus_type dsa_bus_type; extern struct bus_type iax_bus_type; extern bool support_enqcmd; +extern struct ida idxd_ida; +extern struct device_type dsa_device_type; +extern struct device_type iax_device_type; +extern struct device_type idxd_wq_device_type; +extern struct device_type idxd_engine_device_type; +extern struct device_type idxd_group_device_type; + +static inline bool is_dsa_dev(struct device *dev) +{ + return dev->type == &dsa_device_type; +} + +static inline bool is_iax_dev(struct device *dev) +{ + return dev->type == &iax_device_type; +} + +static inline bool is_idxd_dev(struct device *dev) +{ + return is_dsa_dev(dev) || is_iax_dev(dev); +} + +static inline bool is_idxd_wq_dev(struct device *dev) +{ + return dev->type == &idxd_wq_device_type; +} + +static inline bool is_idxd_wq_dmaengine(struct idxd_wq *wq) +{ + if (wq->type == IDXD_WQT_KERNEL && strcmp(wq->name, "dmaengine") == 0) + return true; + return false; +} + +static inline bool is_idxd_wq_cdev(struct idxd_wq *wq) +{ + return wq->type == IDXD_WQT_USER; +} static inline bool wq_dedicated(struct idxd_wq *wq) { @@ -268,6 +365,11 @@ enum idxd_portal_prot { IDXD_PORTAL_LIMITED, }; +enum idxd_interrupt_type { + IDXD_IRQ_MSIX = 0, + IDXD_IRQ_IMS, +}; + static inline int idxd_get_wq_portal_offset(enum idxd_portal_prot prot) { return prot * 0x1000; @@ -279,18 +381,6 @@ static inline int idxd_get_wq_portal_full_offset(int wq_id, return ((wq_id * 4) << PAGE_SHIFT) + idxd_get_wq_portal_offset(prot); } -static inline void idxd_set_type(struct idxd_device *idxd) -{ - struct pci_dev *pdev = idxd->pdev; - - if (pdev->device == PCI_DEVICE_ID_INTEL_DSA_SPR0) - idxd->type = IDXD_TYPE_DSA; - else if (pdev->device == PCI_DEVICE_ID_INTEL_IAX_SPR0) - idxd->type = IDXD_TYPE_IAX; - else - idxd->type = IDXD_TYPE_UNKNOWN; -} - static inline void idxd_wq_get(struct idxd_wq *wq) { wq->client_count++; @@ -306,19 +396,17 @@ static inline int idxd_wq_refcount(struct idxd_wq *wq) return wq->client_count; }; -const char *idxd_get_dev_name(struct idxd_device *idxd); int idxd_register_bus_type(void); void idxd_unregister_bus_type(void); -int idxd_setup_sysfs(struct idxd_device *idxd); -void idxd_cleanup_sysfs(struct idxd_device *idxd); +int idxd_register_devices(struct idxd_device *idxd); +void idxd_unregister_devices(struct idxd_device *idxd); int idxd_register_driver(void); void idxd_unregister_driver(void); -struct bus_type *idxd_get_bus_type(struct idxd_device *idxd); +void idxd_wqs_quiesce(struct idxd_device *idxd); /* device interrupt control */ void idxd_msix_perm_setup(struct idxd_device *idxd); void idxd_msix_perm_clear(struct idxd_device *idxd); -irqreturn_t idxd_irq_handler(int vec, void *data); irqreturn_t idxd_misc_thread(int vec, void *data); irqreturn_t idxd_wq_thread(int irq, void *data); void idxd_mask_error_interrupts(struct idxd_device *idxd); @@ -336,8 +424,14 @@ void idxd_device_cleanup(struct idxd_device *idxd); int idxd_device_config(struct idxd_device *idxd); void idxd_device_wqs_clear_state(struct idxd_device *idxd); void idxd_device_drain_pasid(struct idxd_device *idxd, int pasid); +int idxd_device_load_config(struct idxd_device *idxd); +int idxd_device_request_int_handle(struct idxd_device *idxd, int idx, int *handle, + enum idxd_interrupt_type irq_type); +int idxd_device_release_int_handle(struct idxd_device *idxd, int handle, + enum idxd_interrupt_type irq_type); /* work queue control */ +void idxd_wqs_unmap_portal(struct idxd_device *idxd); int idxd_wq_alloc_resources(struct idxd_wq *wq); void idxd_wq_free_resources(struct idxd_wq *wq); int idxd_wq_enable(struct idxd_wq *wq); @@ -349,6 +443,8 @@ void idxd_wq_unmap_portal(struct idxd_wq *wq); void idxd_wq_disable_cleanup(struct idxd_wq *wq); int idxd_wq_set_pasid(struct idxd_wq *wq, int pasid); int idxd_wq_disable_pasid(struct idxd_wq *wq); +void idxd_wq_quiesce(struct idxd_wq *wq); +int idxd_wq_init_percpu_ref(struct idxd_wq *wq); /* submission */ int idxd_submit_desc(struct idxd_wq *wq, struct idxd_desc *desc); @@ -363,7 +459,6 @@ void idxd_unregister_dma_channel(struct idxd_wq *wq); void idxd_parse_completion_status(u8 status, enum dmaengine_tx_result *res); void idxd_dma_complete_txd(struct idxd_desc *desc, enum idxd_complete_type comp_type); -dma_cookie_t idxd_dma_tx_submit(struct dma_async_tx_descriptor *tx); /* cdev */ int idxd_cdev_register(void); @@ -372,4 +467,19 @@ int idxd_cdev_get_major(struct idxd_device *idxd); int idxd_wq_add_cdev(struct idxd_wq *wq); void idxd_wq_del_cdev(struct idxd_wq *wq); +/* perfmon */ +#if IS_ENABLED(CONFIG_INTEL_IDXD_PERFMON) +int perfmon_pmu_init(struct idxd_device *idxd); +void perfmon_pmu_remove(struct idxd_device *idxd); +void perfmon_counter_overflow(struct idxd_device *idxd); +void perfmon_init(void); +void perfmon_exit(void); +#else +static inline int perfmon_pmu_init(struct idxd_device *idxd) { return 0; } +static inline void perfmon_pmu_remove(struct idxd_device *idxd) {} +static inline void perfmon_counter_overflow(struct idxd_device *idxd) {} +static inline void perfmon_init(void) {} +static inline void perfmon_exit(void) {} +#endif + #endif |