powerpc/pseries/vas: Define VAS/NXGZIP hcalls and structs (8f3a6c92) · Commits · EulixOS / Software / Kernel

arch/powerpc/include/asm/hvcall.h

+7 −0

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		@@ -294,6 +294,13 @@
		#define H_RESIZE_HPT_COMMIT 0x370
		#define H_REGISTER_PROC_TBL 0x37C
		#define H_SIGNAL_SYS_RESET 0x380
		#define H_ALLOCATE_VAS_WINDOW 0x388
		#define H_MODIFY_VAS_WINDOW 0x38C
		#define H_DEALLOCATE_VAS_WINDOW 0x390
		#define H_QUERY_VAS_WINDOW 0x394
		#define H_QUERY_VAS_CAPABILITIES 0x398
		#define H_QUERY_NX_CAPABILITIES 0x39C
		#define H_GET_NX_FAULT 0x3A0
		#define H_INT_GET_SOURCE_INFO 0x3A8
		#define H_INT_SET_SOURCE_CONFIG 0x3AC
		#define H_INT_GET_SOURCE_CONFIG 0x3B0

arch/powerpc/include/asm/vas.h

+30 −0

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		@@ -160,6 +160,7 @@ struct vas_tx_win_attr {
		bool rx_win_ord_mode;
		};

		#ifdef CONFIG_PPC_POWERNV
		/*
		* Helper to map a chip id to VAS id.
		* For POWER9, this is a 1:1 mapping. In the future this maybe a 1:N
		@@ -225,6 +226,35 @@ int vas_paste_crb(struct vas_window *win, int offset, bool re);
		int vas_register_api_powernv(struct module *mod, enum vas_cop_type cop_type,
		const char *name);
		void vas_unregister_api_powernv(void);
		#endif

		#ifdef CONFIG_PPC_PSERIES

		/* VAS Capabilities */
		#define VAS_GZIP_QOS_FEAT 0x1
		#define VAS_GZIP_DEF_FEAT 0x2
		#define VAS_GZIP_QOS_FEAT_BIT PPC_BIT(VAS_GZIP_QOS_FEAT) /* Bit 1 */
		#define VAS_GZIP_DEF_FEAT_BIT PPC_BIT(VAS_GZIP_DEF_FEAT) /* Bit 2 */

		/* NX Capabilities */
		#define VAS_NX_GZIP_FEAT 0x1
		#define VAS_NX_GZIP_FEAT_BIT PPC_BIT(VAS_NX_GZIP_FEAT) /* Bit 1 */

		/*
		* These structs are used to retrieve overall VAS capabilities that
		* the hypervisor provides.
		*/
		struct hv_vas_all_caps {
		__be64 descriptor;
		__be64 feat_type;
		} __packed __aligned(0x1000);

		struct vas_all_caps {
		u64 descriptor;
		u64 feat_type;
		};

		#endif

		/*
		* Register / unregister coprocessor type to VAS API which will be exported

arch/powerpc/platforms/pseries/vas.h

0 → 100644

+125 −0

Original line number	Diff line number	Diff line
		/* SPDX-License-Identifier: GPL-2.0-or-later */
		/*
		* Copyright 2020-21 IBM Corp.
		*/

		#ifndef _VAS_H
		#define _VAS_H
		#include <asm/vas.h>
		#include <linux/mutex.h>
		#include <linux/stringify.h>

		/*
		* VAS window modify flags
		*/
		#define VAS_MOD_WIN_CLOSE PPC_BIT(0)
		#define VAS_MOD_WIN_JOBS_KILL PPC_BIT(1)
		#define VAS_MOD_WIN_DR PPC_BIT(3)
		#define VAS_MOD_WIN_PR PPC_BIT(4)
		#define VAS_MOD_WIN_SF PPC_BIT(5)
		#define VAS_MOD_WIN_TA PPC_BIT(6)
		#define VAS_MOD_WIN_FLAGS (VAS_MOD_WIN_JOBS_KILL \| VAS_MOD_WIN_DR \| \
		VAS_MOD_WIN_PR \| VAS_MOD_WIN_SF)

		#define VAS_WIN_ACTIVE 0x0
		#define VAS_WIN_CLOSED 0x1
		#define VAS_WIN_INACTIVE 0x2 /* Inactive due to HW failure */
		/* Process of being modified, deallocated, or quiesced */
		#define VAS_WIN_MOD_IN_PROCESS 0x3

		#define VAS_COPY_PASTE_USER_MODE 0x00000001
		#define VAS_COP_OP_USER_MODE 0x00000010

		/*
		* Co-processor feature - GZIP QoS windows or GZIP default windows
		*/
		enum vas_cop_feat_type {
		VAS_GZIP_QOS_FEAT_TYPE,
		VAS_GZIP_DEF_FEAT_TYPE,
		VAS_MAX_FEAT_TYPE,
		};

		/*
		* Use to get feature specific capabilities from the
		* hypervisor.
		*/
		struct hv_vas_cop_feat_caps {
		__be64 descriptor;
		u8 win_type; /* Default or QoS type */
		u8 user_mode;
		__be16 max_lpar_creds;
		__be16 max_win_creds;
		union {
		__be16 reserved;
		__be16 def_lpar_creds; /* Used for default capabilities */
		};
		__be16 target_lpar_creds;
		} __packed __aligned(0x1000);

		/*
		* Feature specific (QoS or default) capabilities.
		*/
		struct vas_cop_feat_caps {
		u64 descriptor;
		u8 win_type; /* Default or QoS type */
		u8 user_mode; /* User mode copy/paste or COP HCALL */
		u16 max_lpar_creds; /* Max credits available in LPAR */
		/* Max credits can be assigned per window */
		u16 max_win_creds;
		union {
		u16 reserved; /* Used for QoS credit type */
		u16 def_lpar_creds; /* Used for default credit type */
		};
		/* Total LPAR available credits. Can be different from max LPAR */
		/* credits due to DLPAR operation */
		atomic_t target_lpar_creds;
		atomic_t used_lpar_creds; /* Used credits so far */
		u16 avail_lpar_creds; /* Remaining available credits */
		};

		/*
		* Feature (QoS or Default) specific to store capabilities and
		* the list of open windows.
		*/
		struct vas_caps {
		struct vas_cop_feat_caps caps;
		struct list_head list; /* List of open windows */
		};

		/*
		* To get window information from the hypervisor.
		*/
		struct hv_vas_win_lpar {
		__be16 version;
		u8 win_type;
		u8 status;
		__be16 credits; /* No of credits assigned to this window */
		__be16 reserved;
		__be32 pid; /* LPAR Process ID */
		__be32 tid; /* LPAR Thread ID */
		__be64 win_addr; /* Paste address */
		__be32 interrupt; /* Interrupt when NX request completes */
		__be32 fault; /* Interrupt when NX sees fault */
		/* Associativity Domain Identifiers as returned in */
		/* H_HOME_NODE_ASSOCIATIVITY */
		__be64 domain[6];
		__be64 win_util; /* Number of bytes processed */
		} __packed __aligned(0x1000);

		struct pseries_vas_window {
		struct vas_window vas_win;
		u64 win_addr; /* Physical paste address */
		u8 win_type; /* QoS or Default window */
		u32 complete_irq; /* Completion interrupt */
		u32 fault_irq; /* Fault interrupt */
		u64 domain[6]; /* Associativity domain Ids */
		/* this window is allocated */
		u64 util;

		/* List of windows opened which is used for LPM */
		struct list_head win_list;
		u64 flags;
		char *name;
		int fault_virq;
		};
		#endif /* _VAS_H */