enable tun/tap/iptables

hc

2024-05-10 ee930fffee469d076998274a2ca55e13dc1efb67

 kernel/drivers/misc/ocxl/ocxl_internal.h
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@@ -1,4 +1,4 @@
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-// SPDX-License-Identifier: GPL-2.0+
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+/* SPDX-License-Identifier: GPL-2.0+ */
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 // Copyright 2017 IBM Corp.
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 #ifndef _OCXL_INTERNAL_H_
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 #define _OCXL_INTERNAL_H_
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@@ -11,11 +11,7 @@
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 #define MAX_IRQ_PER_LINK	2000
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 #define MAX_IRQ_PER_CONTEXT	MAX_IRQ_PER_LINK
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13
 
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-#define to_ocxl_function(d) container_of(d, struct ocxl_fn, dev)
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-#define to_ocxl_afu(d) container_of(d, struct ocxl_afu, dev)
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-
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 extern struct pci_driver ocxl_pci_driver;
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-
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 struct ocxl_fn {
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 	struct device dev;
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@@ -31,11 +27,17 @@
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 	void *link;
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 };
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29
 
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-struct ocxl_afu {
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-	struct ocxl_fn *fn;
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-	struct list_head list;
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+struct ocxl_file_info {
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+	struct ocxl_afu *afu;
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 	struct device dev;
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 	struct cdev cdev;
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+	struct bin_attribute attr_global_mmio;
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+};
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+
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+struct ocxl_afu {
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+	struct kref kref;
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+	struct ocxl_fn *fn;
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+	struct list_head list;
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 	struct ocxl_afu_config config;
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 	int pasid_base;
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 	int pasid_count; /* opened contexts */
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@@ -49,7 +51,7 @@
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 	u64 irq_base_offset;
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 	void __iomem *global_mmio_ptr;
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 	u64 pp_mmio_start;
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-	struct bin_attribute attr_global_mmio;
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+	void *private;
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 };
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 enum ocxl_context_status {
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@@ -92,41 +94,58 @@
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 	__be32 software_state;
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 };
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+int ocxl_create_cdev(struct ocxl_afu *afu);
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+void ocxl_destroy_cdev(struct ocxl_afu *afu);
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+int ocxl_file_register_afu(struct ocxl_afu *afu);
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+void ocxl_file_unregister_afu(struct ocxl_afu *afu);
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-extern struct ocxl_afu *ocxl_afu_get(struct ocxl_afu *afu);
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-extern void ocxl_afu_put(struct ocxl_afu *afu);
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+int ocxl_file_init(void);
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+void ocxl_file_exit(void);
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-extern int ocxl_create_cdev(struct ocxl_afu *afu);
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-extern void ocxl_destroy_cdev(struct ocxl_afu *afu);
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-extern int ocxl_register_afu(struct ocxl_afu *afu);
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-extern void ocxl_unregister_afu(struct ocxl_afu *afu);
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+int ocxl_pasid_afu_alloc(struct ocxl_fn *fn, u32 size);
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+void ocxl_pasid_afu_free(struct ocxl_fn *fn, u32 start, u32 size);
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+int ocxl_actag_afu_alloc(struct ocxl_fn *fn, u32 size);
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+void ocxl_actag_afu_free(struct ocxl_fn *fn, u32 start, u32 size);
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-extern int ocxl_file_init(void);
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-extern void ocxl_file_exit(void);
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+/*
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+ * Get the max PASID value that can be used by the function
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+ */
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+int ocxl_config_get_pasid_info(struct pci_dev *dev, int *count);
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-extern int ocxl_pasid_afu_alloc(struct ocxl_fn *fn, u32 size);
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-extern void ocxl_pasid_afu_free(struct ocxl_fn *fn, u32 start, u32 size);
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-extern int ocxl_actag_afu_alloc(struct ocxl_fn *fn, u32 size);
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-extern void ocxl_actag_afu_free(struct ocxl_fn *fn, u32 start, u32 size);
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+/*
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+ * Control whether the FPGA is reloaded on a link reset
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+ */
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+int ocxl_config_get_reset_reload(struct pci_dev *dev, int *val);
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+int ocxl_config_set_reset_reload(struct pci_dev *dev, int val);
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-extern struct ocxl_context *ocxl_context_alloc(void);
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-extern int ocxl_context_init(struct ocxl_context *ctx, struct ocxl_afu *afu,
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-			struct address_space *mapping);
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-extern int ocxl_context_attach(struct ocxl_context *ctx, u64 amr);
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-extern int ocxl_context_mmap(struct ocxl_context *ctx,
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+/*
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+ * Check if an AFU index is valid for the given function.
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+ *
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+ * AFU indexes can be sparse, so a driver should check all indexes up
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+ * to the maximum found in the function description
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+ */
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+int ocxl_config_check_afu_index(struct pci_dev *dev,
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+				struct ocxl_fn_config *fn, int afu_idx);
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+
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+/**
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+ * ocxl_link_update_pe() - Update values within a Process Element
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+ * @link_handle: the link handle associated with the process element
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+ * @pasid: the PASID for the AFU context
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+ * @tid: the new thread id for the process element
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+ *
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+ * Returns 0 on success
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+ */
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+int ocxl_link_update_pe(void *link_handle, int pasid, __u16 tid);
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+
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+int ocxl_context_mmap(struct ocxl_context *ctx,
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 			struct vm_area_struct *vma);
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-extern int ocxl_context_detach(struct ocxl_context *ctx);
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-extern void ocxl_context_detach_all(struct ocxl_afu *afu);
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-extern void ocxl_context_free(struct ocxl_context *ctx);
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+void ocxl_context_detach_all(struct ocxl_afu *afu);
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-extern int ocxl_sysfs_add_afu(struct ocxl_afu *afu);
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-extern void ocxl_sysfs_remove_afu(struct ocxl_afu *afu);
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+int ocxl_sysfs_register_afu(struct ocxl_file_info *info);
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+void ocxl_sysfs_unregister_afu(struct ocxl_file_info *info);
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-extern int ocxl_afu_irq_alloc(struct ocxl_context *ctx, u64 *irq_offset);
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-extern int ocxl_afu_irq_free(struct ocxl_context *ctx, u64 irq_offset);
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-extern void ocxl_afu_irq_free_all(struct ocxl_context *ctx);
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-extern int ocxl_afu_irq_set_fd(struct ocxl_context *ctx, u64 irq_offset,
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-			int eventfd);
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-extern u64 ocxl_afu_irq_get_addr(struct ocxl_context *ctx, u64 irq_offset);
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+int ocxl_irq_offset_to_id(struct ocxl_context *ctx, u64 offset);
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+u64 ocxl_irq_id_to_offset(struct ocxl_context *ctx, int irq_id);
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+void ocxl_afu_irq_free_all(struct ocxl_context *ctx);
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 #endif /* _OCXL_INTERNAL_H_ */