add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/powerpc/include/asm/vas.h
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@@ -1,10 +1,6 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /*
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  * Copyright 2016-17 IBM Corp.
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation; either version
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- * 2 of the License, or (at your option) any later version.
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  */
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 #ifndef _ASM_POWERPC_VAS_H
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@@ -56,7 +52,7 @@
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  * Receive window attributes specified by the (in-kernel) owner of window.
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  */
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 struct vas_rx_win_attr {
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-	void *rx_fifo;
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+	u64 rx_fifo;
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 	int rx_fifo_size;
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 	int wcreds_max;
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@@ -90,7 +86,6 @@
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 	int wcreds_max;
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 	int lpid;
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 	int pidr;		/* hardware PID (from SPRN_PID) */
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-	int pid;		/* linux process id */
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 	int pswid;
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 	int rsvd_txbuf_count;
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 	int tc_mode;
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@@ -168,13 +163,15 @@
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 int vas_paste_crb(struct vas_window *win, int offset, bool re);
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 /*
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- * Return a system-wide unique id for the VAS window @win.
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+ * Register / unregister coprocessor type to VAS API which will be exported
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+ * to user space. Applications can use this API to open / close window
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+ * which can be used to send / receive requests directly to cooprcessor.
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+ *
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+ * Only NX GZIP coprocessor type is supported now, but this API can be
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+ * used for others in future.
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  */
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-extern u32 vas_win_id(struct vas_window *win);
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+int vas_register_coproc_api(struct module *mod, enum vas_cop_type cop_type,
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+				const char *name);
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+void vas_unregister_coproc_api(void);
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-/*
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- * Return the power bus paste address associated with @win so the caller
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- * can map that address into their address space.
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- */
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-extern u64 vas_win_paste_addr(struct vas_window *win);
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 #endif /* __ASM_POWERPC_VAS_H */