Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * linux/drivers/s390/cio/qdio.h |
| 3 | * |
| 4 | * Copyright 2000,2008 IBM Corp. |
| 5 | * Author(s): Utz Bacher <utz.bacher@de.ibm.com> |
| 6 | * Jan Glauber <jang@linux.vnet.ibm.com> |
| 7 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #ifndef _CIO_QDIO_H |
| 9 | #define _CIO_QDIO_H |
| 10 | |
Peter Oberparleiter | 0b642ed | 2005-05-01 08:58:58 -0700 | [diff] [blame] | 11 | #include <asm/page.h> |
Cornelia Huck | 9d92a7e | 2008-07-14 09:59:05 +0200 | [diff] [blame] | 12 | #include <asm/schid.h> |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 13 | #include "chsc.h" |
Cornelia Huck | a8237fc | 2006-01-06 00:19:21 -0800 | [diff] [blame] | 14 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 15 | #define QDIO_BUSY_BIT_PATIENCE 100 /* 100 microseconds */ |
| 16 | #define QDIO_BUSY_BIT_GIVE_UP 2000000 /* 2 seconds = eternity */ |
| 17 | #define QDIO_INPUT_THRESHOLD 500 /* 500 microseconds */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | |
| 19 | enum qdio_irq_states { |
| 20 | QDIO_IRQ_STATE_INACTIVE, |
| 21 | QDIO_IRQ_STATE_ESTABLISHED, |
| 22 | QDIO_IRQ_STATE_ACTIVE, |
| 23 | QDIO_IRQ_STATE_STOPPED, |
| 24 | QDIO_IRQ_STATE_CLEANUP, |
| 25 | QDIO_IRQ_STATE_ERR, |
| 26 | NR_QDIO_IRQ_STATES, |
| 27 | }; |
| 28 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 29 | /* used as intparm in do_IO */ |
| 30 | #define QDIO_DOING_ESTABLISH 1 |
| 31 | #define QDIO_DOING_ACTIVATE 2 |
| 32 | #define QDIO_DOING_CLEANUP 3 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 34 | #define SLSB_STATE_NOT_INIT 0x0 |
| 35 | #define SLSB_STATE_EMPTY 0x1 |
| 36 | #define SLSB_STATE_PRIMED 0x2 |
| 37 | #define SLSB_STATE_HALTED 0xe |
| 38 | #define SLSB_STATE_ERROR 0xf |
| 39 | #define SLSB_TYPE_INPUT 0x0 |
| 40 | #define SLSB_TYPE_OUTPUT 0x20 |
| 41 | #define SLSB_OWNER_PROG 0x80 |
| 42 | #define SLSB_OWNER_CU 0x40 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 44 | #define SLSB_P_INPUT_NOT_INIT \ |
| 45 | (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_NOT_INIT) /* 0x80 */ |
| 46 | #define SLSB_P_INPUT_ACK \ |
| 47 | (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_EMPTY) /* 0x81 */ |
| 48 | #define SLSB_CU_INPUT_EMPTY \ |
| 49 | (SLSB_OWNER_CU | SLSB_TYPE_INPUT | SLSB_STATE_EMPTY) /* 0x41 */ |
| 50 | #define SLSB_P_INPUT_PRIMED \ |
| 51 | (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_PRIMED) /* 0x82 */ |
| 52 | #define SLSB_P_INPUT_HALTED \ |
| 53 | (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_HALTED) /* 0x8e */ |
| 54 | #define SLSB_P_INPUT_ERROR \ |
| 55 | (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_ERROR) /* 0x8f */ |
| 56 | #define SLSB_P_OUTPUT_NOT_INIT \ |
| 57 | (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_NOT_INIT) /* 0xa0 */ |
| 58 | #define SLSB_P_OUTPUT_EMPTY \ |
| 59 | (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_EMPTY) /* 0xa1 */ |
| 60 | #define SLSB_CU_OUTPUT_PRIMED \ |
| 61 | (SLSB_OWNER_CU | SLSB_TYPE_OUTPUT | SLSB_STATE_PRIMED) /* 0x62 */ |
| 62 | #define SLSB_P_OUTPUT_HALTED \ |
| 63 | (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_HALTED) /* 0xae */ |
| 64 | #define SLSB_P_OUTPUT_ERROR \ |
| 65 | (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_ERROR) /* 0xaf */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 67 | #define SLSB_ERROR_DURING_LOOKUP 0xff |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 69 | /* additional CIWs returned by extended Sense-ID */ |
| 70 | #define CIW_TYPE_EQUEUE 0x3 /* establish QDIO queues */ |
| 71 | #define CIW_TYPE_AQUEUE 0x4 /* activate QDIO queues */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 73 | /* flags for st qdio sch data */ |
| 74 | #define CHSC_FLAG_QDIO_CAPABILITY 0x80 |
| 75 | #define CHSC_FLAG_VALIDITY 0x40 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 77 | /* qdio adapter-characteristics-1 flag */ |
| 78 | #define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */ |
| 79 | #define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */ |
| 80 | #define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */ |
| 81 | #define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */ |
| 82 | #define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */ |
| 83 | #define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */ |
| 84 | #define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
Martin Schwidefsky | 347a8dc | 2006-01-06 00:19:28 -0800 | [diff] [blame] | 86 | #ifdef CONFIG_64BIT |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 87 | static inline int do_sqbs(u64 token, unsigned char state, int queue, |
| 88 | int *start, int *count) |
| 89 | { |
| 90 | register unsigned long _ccq asm ("0") = *count; |
| 91 | register unsigned long _token asm ("1") = token; |
| 92 | unsigned long _queuestart = ((unsigned long)queue << 32) | *start; |
Frank Pavlic | 8129ee1 | 2006-01-06 00:19:20 -0800 | [diff] [blame] | 93 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 94 | asm volatile( |
| 95 | " .insn rsy,0xeb000000008A,%1,0,0(%2)" |
| 96 | : "+d" (_ccq), "+d" (_queuestart) |
| 97 | : "d" ((unsigned long)state), "d" (_token) |
| 98 | : "memory", "cc"); |
| 99 | *count = _ccq & 0xff; |
| 100 | *start = _queuestart & 0xff; |
Frank Pavlic | 8129ee1 | 2006-01-06 00:19:20 -0800 | [diff] [blame] | 101 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 102 | return (_ccq >> 32) & 0xff; |
Frank Pavlic | 8129ee1 | 2006-01-06 00:19:20 -0800 | [diff] [blame] | 103 | } |
| 104 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 105 | static inline int do_eqbs(u64 token, unsigned char *state, int queue, |
| 106 | int *start, int *count) |
Frank Pavlic | 8129ee1 | 2006-01-06 00:19:20 -0800 | [diff] [blame] | 107 | { |
Frank Pavlic | 8129ee1 | 2006-01-06 00:19:20 -0800 | [diff] [blame] | 108 | register unsigned long _ccq asm ("0") = *count; |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 109 | register unsigned long _token asm ("1") = token; |
Frank Pavlic | 8129ee1 | 2006-01-06 00:19:20 -0800 | [diff] [blame] | 110 | unsigned long _queuestart = ((unsigned long)queue << 32) | *start; |
| 111 | unsigned long _state = 0; |
| 112 | |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 113 | asm volatile( |
| 114 | " .insn rrf,0xB99c0000,%1,%2,0,0" |
| 115 | : "+d" (_ccq), "+d" (_queuestart), "+d" (_state) |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 116 | : "d" (_token) |
| 117 | : "memory", "cc"); |
Frank Pavlic | 8129ee1 | 2006-01-06 00:19:20 -0800 | [diff] [blame] | 118 | *count = _ccq & 0xff; |
| 119 | *start = _queuestart & 0xff; |
| 120 | *state = _state & 0xff; |
| 121 | |
| 122 | return (_ccq >> 32) & 0xff; |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 123 | } |
Frank Pavlic | 8129ee1 | 2006-01-06 00:19:20 -0800 | [diff] [blame] | 124 | #else |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 125 | static inline int do_sqbs(u64 token, unsigned char state, int queue, |
| 126 | int *start, int *count) { return 0; } |
| 127 | static inline int do_eqbs(u64 token, unsigned char *state, int queue, |
| 128 | int *start, int *count) { return 0; } |
| 129 | #endif /* CONFIG_64BIT */ |
Frank Pavlic | 8129ee1 | 2006-01-06 00:19:20 -0800 | [diff] [blame] | 130 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 131 | struct qdio_irq; |
Frank Pavlic | 8129ee1 | 2006-01-06 00:19:20 -0800 | [diff] [blame] | 132 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 133 | struct siga_flag { |
| 134 | u8 input:1; |
| 135 | u8 output:1; |
| 136 | u8 sync:1; |
| 137 | u8 no_sync_ti:1; |
| 138 | u8 no_sync_out_ti:1; |
| 139 | u8 no_sync_out_pci:1; |
| 140 | u8:2; |
| 141 | } __attribute__ ((packed)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 143 | struct chsc_ssqd_area { |
Ursula Braun | e177685 | 2008-04-17 07:46:22 +0200 | [diff] [blame] | 144 | struct chsc_header request; |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 145 | u16:10; |
| 146 | u8 ssid:2; |
| 147 | u8 fmt:4; |
Ursula Braun | e177685 | 2008-04-17 07:46:22 +0200 | [diff] [blame] | 148 | u16 first_sch; |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 149 | u16:16; |
Ursula Braun | e177685 | 2008-04-17 07:46:22 +0200 | [diff] [blame] | 150 | u16 last_sch; |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 151 | u32:32; |
Ursula Braun | e177685 | 2008-04-17 07:46:22 +0200 | [diff] [blame] | 152 | struct chsc_header response; |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 153 | u32:32; |
| 154 | struct qdio_ssqd_desc qdio_ssqd; |
| 155 | } __attribute__ ((packed)); |
| 156 | |
| 157 | struct scssc_area { |
| 158 | struct chsc_header request; |
| 159 | u16 operation_code; |
| 160 | u16:16; |
| 161 | u32:32; |
| 162 | u32:32; |
| 163 | u64 summary_indicator_addr; |
| 164 | u64 subchannel_indicator_addr; |
| 165 | u32 ks:4; |
| 166 | u32 kc:4; |
| 167 | u32:21; |
| 168 | u32 isc:3; |
| 169 | u32 word_with_d_bit; |
| 170 | u32:32; |
| 171 | struct subchannel_id schid; |
| 172 | u32 reserved[1004]; |
| 173 | struct chsc_header response; |
| 174 | u32:32; |
| 175 | } __attribute__ ((packed)); |
| 176 | |
| 177 | struct qdio_input_q { |
| 178 | /* input buffer acknowledgement flag */ |
| 179 | int polling; |
| 180 | |
| 181 | /* last time of noticing incoming data */ |
| 182 | u64 timestamp; |
| 183 | |
| 184 | /* lock for clearing the acknowledgement */ |
| 185 | spinlock_t lock; |
Ursula Braun | e177685 | 2008-04-17 07:46:22 +0200 | [diff] [blame] | 186 | }; |
| 187 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 188 | struct qdio_output_q { |
| 189 | /* failed siga-w attempts*/ |
| 190 | atomic_t busy_siga_counter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 192 | /* start time of busy condition */ |
| 193 | u64 timestamp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 195 | /* PCIs are enabled for the queue */ |
| 196 | int pci_out_enabled; |
Ursula Braun | 00c0c64 | 2007-05-04 18:47:49 +0200 | [diff] [blame] | 197 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 198 | /* timer to check for more outbound work */ |
| 199 | struct timer_list timer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | struct qdio_q { |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 203 | struct slsb slsb; |
| 204 | union { |
| 205 | struct qdio_input_q in; |
| 206 | struct qdio_output_q out; |
| 207 | } u; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 209 | /* queue number */ |
| 210 | int nr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 212 | /* bitmask of queue number */ |
| 213 | int mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 215 | /* input or output queue */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | int is_input_q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 218 | /* list of thinint input queues */ |
| 219 | struct list_head entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 221 | /* upper-layer program handler */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | qdio_handler_t (*handler); |
| 223 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 224 | /* |
| 225 | * inbound: next buffer the program should check for |
| 226 | * outbound: next buffer to check for having been processed |
| 227 | * by the card |
| 228 | */ |
| 229 | int first_to_check; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 231 | /* first_to_check of the last time */ |
| 232 | int last_move_ftc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 234 | /* beginning position for calling the program */ |
| 235 | int first_to_kick; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 237 | /* number of buffers in use by the adapter */ |
| 238 | atomic_t nr_buf_used; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 240 | struct qdio_irq *irq_ptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | struct tasklet_struct tasklet; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 243 | /* error condition during a data transfer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | unsigned int qdio_error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | |
| 246 | struct sl *sl; |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 247 | struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 249 | /* |
| 250 | * Warning: Leave this member at the end so it won't be cleared in |
| 251 | * qdio_fill_qs. A page is allocated under this pointer and used for |
| 252 | * slib and sl. slib is 2048 bytes big and sl points to offset |
| 253 | * PAGE_SIZE / 2. |
| 254 | */ |
| 255 | struct slib *slib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | } __attribute__ ((aligned(256))); |
| 257 | |
| 258 | struct qdio_irq { |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 259 | struct qib qib; |
| 260 | u32 *dsci; /* address of device state change indicator */ |
| 261 | struct ccw_device *cdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | |
| 263 | unsigned long int_parm; |
Cornelia Huck | a8237fc | 2006-01-06 00:19:21 -0800 | [diff] [blame] | 264 | struct subchannel_id schid; |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 265 | unsigned long sch_token; /* QEBSM facility */ |
Frank Pavlic | 8129ee1 | 2006-01-06 00:19:20 -0800 | [diff] [blame] | 266 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | enum qdio_irq_states state; |
| 268 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 269 | struct siga_flag siga_flag; /* siga sync information from qdioac */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 271 | int nr_input_qs; |
| 272 | int nr_output_qs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
| 274 | struct ccw1 ccw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | struct ciw equeue; |
| 276 | struct ciw aqueue; |
| 277 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 278 | struct qdio_ssqd_desc ssqd_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 280 | void (*orig_handler) (struct ccw_device *, unsigned long, struct irb *); |
| 281 | |
| 282 | /* |
| 283 | * Warning: Leave these members together at the end so they won't be |
| 284 | * cleared in qdio_setup_irq. |
| 285 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | struct qdr *qdr; |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 287 | unsigned long chsc_page; |
| 288 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ]; |
| 290 | struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ]; |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 291 | |
| 292 | struct mutex setup_mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | }; |
Jan Glauber | 779e6e1 | 2008-07-17 17:16:48 +0200 | [diff] [blame^] | 294 | |
| 295 | /* helper functions */ |
| 296 | #define queue_type(q) q->irq_ptr->qib.qfmt |
| 297 | |
| 298 | #define is_thinint_irq(irq) \ |
| 299 | (irq->qib.qfmt == QDIO_IQDIO_QFMT || \ |
| 300 | css_general_characteristics.aif_osa) |
| 301 | |
| 302 | /* the highest iqdio queue is used for multicast */ |
| 303 | static inline int multicast_outbound(struct qdio_q *q) |
| 304 | { |
| 305 | return (q->irq_ptr->nr_output_qs > 1) && |
| 306 | (q->nr == q->irq_ptr->nr_output_qs - 1); |
| 307 | } |
| 308 | |
| 309 | static inline unsigned long long get_usecs(void) |
| 310 | { |
| 311 | return monotonic_clock() >> 12; |
| 312 | } |
| 313 | |
| 314 | #define pci_out_supported(q) \ |
| 315 | (q->irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED) |
| 316 | #define is_qebsm(q) (q->irq_ptr->sch_token != 0) |
| 317 | |
| 318 | #define need_siga_sync_thinint(q) (!q->irq_ptr->siga_flag.no_sync_ti) |
| 319 | #define need_siga_sync_out_thinint(q) (!q->irq_ptr->siga_flag.no_sync_out_ti) |
| 320 | #define need_siga_in(q) (q->irq_ptr->siga_flag.input) |
| 321 | #define need_siga_out(q) (q->irq_ptr->siga_flag.output) |
| 322 | #define need_siga_sync(q) (q->irq_ptr->siga_flag.sync) |
| 323 | #define siga_syncs_out_pci(q) (q->irq_ptr->siga_flag.no_sync_out_pci) |
| 324 | |
| 325 | #define for_each_input_queue(irq_ptr, q, i) \ |
| 326 | for (i = 0, q = irq_ptr->input_qs[0]; \ |
| 327 | i < irq_ptr->nr_input_qs; \ |
| 328 | q = irq_ptr->input_qs[++i]) |
| 329 | #define for_each_output_queue(irq_ptr, q, i) \ |
| 330 | for (i = 0, q = irq_ptr->output_qs[0]; \ |
| 331 | i < irq_ptr->nr_output_qs; \ |
| 332 | q = irq_ptr->output_qs[++i]) |
| 333 | |
| 334 | #define prev_buf(bufnr) \ |
| 335 | ((bufnr + QDIO_MAX_BUFFERS_MASK) & QDIO_MAX_BUFFERS_MASK) |
| 336 | #define next_buf(bufnr) \ |
| 337 | ((bufnr + 1) & QDIO_MAX_BUFFERS_MASK) |
| 338 | #define add_buf(bufnr, inc) \ |
| 339 | ((bufnr + inc) & QDIO_MAX_BUFFERS_MASK) |
| 340 | |
| 341 | /* prototypes for thin interrupt */ |
| 342 | void qdio_sync_after_thinint(struct qdio_q *q); |
| 343 | int get_buf_state(struct qdio_q *q, unsigned int bufnr, unsigned char *state); |
| 344 | void qdio_check_outbound_after_thinint(struct qdio_q *q); |
| 345 | int qdio_inbound_q_moved(struct qdio_q *q); |
| 346 | void qdio_kick_inbound_handler(struct qdio_q *q); |
| 347 | void qdio_stop_polling(struct qdio_q *q); |
| 348 | int qdio_siga_sync_q(struct qdio_q *q); |
| 349 | |
| 350 | void qdio_setup_thinint(struct qdio_irq *irq_ptr); |
| 351 | int qdio_establish_thinint(struct qdio_irq *irq_ptr); |
| 352 | void qdio_shutdown_thinint(struct qdio_irq *irq_ptr); |
| 353 | void tiqdio_add_input_queues(struct qdio_irq *irq_ptr); |
| 354 | void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr); |
| 355 | void tiqdio_inbound_processing(unsigned long q); |
| 356 | int tiqdio_allocate_memory(void); |
| 357 | void tiqdio_free_memory(void); |
| 358 | int tiqdio_register_thinints(void); |
| 359 | void tiqdio_unregister_thinints(void); |
| 360 | |
| 361 | /* prototypes for setup */ |
| 362 | void qdio_inbound_processing(unsigned long data); |
| 363 | void qdio_outbound_processing(unsigned long data); |
| 364 | void qdio_outbound_timer(unsigned long data); |
| 365 | void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm, |
| 366 | struct irb *irb); |
| 367 | int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, |
| 368 | int nr_output_qs); |
| 369 | void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr); |
| 370 | int qdio_setup_irq(struct qdio_initialize *init_data); |
| 371 | void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, |
| 372 | struct ccw_device *cdev); |
| 373 | void qdio_release_memory(struct qdio_irq *irq_ptr); |
| 374 | int qdio_setup_init(void); |
| 375 | void qdio_setup_exit(void); |
| 376 | |
| 377 | #endif /* _CIO_QDIO_H */ |