1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright 2020-21 IBM Corp. 4 */ 5 6 #ifndef _VAS_H 7 #define _VAS_H 8 #include <asm/vas.h> 9 #include <linux/mutex.h> 10 #include <linux/stringify.h> 11 12 /* 13 * VAS window modify flags 14 */ 15 #define VAS_MOD_WIN_CLOSE PPC_BIT(0) 16 #define VAS_MOD_WIN_JOBS_KILL PPC_BIT(1) 17 #define VAS_MOD_WIN_DR PPC_BIT(3) 18 #define VAS_MOD_WIN_PR PPC_BIT(4) 19 #define VAS_MOD_WIN_SF PPC_BIT(5) 20 #define VAS_MOD_WIN_TA PPC_BIT(6) 21 #define VAS_MOD_WIN_FLAGS (VAS_MOD_WIN_JOBS_KILL | VAS_MOD_WIN_DR | \ 22 VAS_MOD_WIN_PR | VAS_MOD_WIN_SF) 23 24 #define VAS_WIN_ACTIVE 0x0 25 #define VAS_WIN_CLOSED 0x1 26 #define VAS_WIN_INACTIVE 0x2 /* Inactive due to HW failure */ 27 /* Process of being modified, deallocated, or quiesced */ 28 #define VAS_WIN_MOD_IN_PROCESS 0x3 29 30 #define VAS_COPY_PASTE_USER_MODE 0x00000001 31 #define VAS_COP_OP_USER_MODE 0x00000010 32 33 /* 34 * Co-processor feature - GZIP QoS windows or GZIP default windows 35 */ 36 enum vas_cop_feat_type { 37 VAS_GZIP_QOS_FEAT_TYPE, 38 VAS_GZIP_DEF_FEAT_TYPE, 39 VAS_MAX_FEAT_TYPE, 40 }; 41 42 /* 43 * Use to get feature specific capabilities from the 44 * hypervisor. 45 */ 46 struct hv_vas_cop_feat_caps { 47 __be64 descriptor; 48 u8 win_type; /* Default or QoS type */ 49 u8 user_mode; 50 __be16 max_lpar_creds; 51 __be16 max_win_creds; 52 union { 53 __be16 reserved; 54 __be16 def_lpar_creds; /* Used for default capabilities */ 55 }; 56 __be16 target_lpar_creds; 57 } __packed __aligned(0x1000); 58 59 /* 60 * Feature specific (QoS or default) capabilities. 61 */ 62 struct vas_cop_feat_caps { 63 u64 descriptor; 64 u8 win_type; /* Default or QoS type */ 65 u8 user_mode; /* User mode copy/paste or COP HCALL */ 66 u16 max_lpar_creds; /* Max credits available in LPAR */ 67 /* Max credits can be assigned per window */ 68 u16 max_win_creds; 69 union { 70 u16 reserved; /* Used for QoS credit type */ 71 u16 def_lpar_creds; /* Used for default credit type */ 72 }; 73 /* Total LPAR available credits. Can be different from max LPAR */ 74 /* credits due to DLPAR operation */ 75 atomic_t target_lpar_creds; 76 atomic_t used_lpar_creds; /* Used credits so far */ 77 u16 avail_lpar_creds; /* Remaining available credits */ 78 }; 79 80 /* 81 * Feature (QoS or Default) specific to store capabilities and 82 * the list of open windows. 83 */ 84 struct vas_caps { 85 struct vas_cop_feat_caps caps; 86 struct list_head list; /* List of open windows */ 87 }; 88 89 /* 90 * To get window information from the hypervisor. 91 */ 92 struct hv_vas_win_lpar { 93 __be16 version; 94 u8 win_type; 95 u8 status; 96 __be16 credits; /* No of credits assigned to this window */ 97 __be16 reserved; 98 __be32 pid; /* LPAR Process ID */ 99 __be32 tid; /* LPAR Thread ID */ 100 __be64 win_addr; /* Paste address */ 101 __be32 interrupt; /* Interrupt when NX request completes */ 102 __be32 fault; /* Interrupt when NX sees fault */ 103 /* Associativity Domain Identifiers as returned in */ 104 /* H_HOME_NODE_ASSOCIATIVITY */ 105 __be64 domain[6]; 106 __be64 win_util; /* Number of bytes processed */ 107 } __packed __aligned(0x1000); 108 109 struct pseries_vas_window { 110 struct vas_window vas_win; 111 u64 win_addr; /* Physical paste address */ 112 u8 win_type; /* QoS or Default window */ 113 u32 complete_irq; /* Completion interrupt */ 114 u32 fault_irq; /* Fault interrupt */ 115 u64 domain[6]; /* Associativity domain Ids */ 116 /* this window is allocated */ 117 u64 util; 118 119 /* List of windows opened which is used for LPM */ 120 struct list_head win_list; 121 u64 flags; 122 char *name; 123 int fault_virq; 124 }; 125 #endif /* _VAS_H */ 126