^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Horst Hummel <Horst.Hummel@de.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Martin Schwidefsky <schwidefsky@de.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Bugreports.to..: <Linux390@de.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright IBM Corp. 1999, 2009
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #ifndef DASD_INT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define DASD_INT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /* we keep old device allocation scheme; IOW, minors are still in 0..255 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define DASD_PER_MAJOR (1U << (MINORBITS - DASD_PARTN_BITS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define DASD_PARTN_MASK ((1 << DASD_PARTN_BITS) - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * States a dasd device can have:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * new: the dasd_device structure is allocated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * known: the discipline for the device is identified.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * basic: the device can do basic i/o.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * unfmt: the device could not be analyzed (format is unknown).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * ready: partition detection is done and the device is can do block io.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * online: the device accepts requests from the block device queue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * Things to do for startup state transitions:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * new -> known: find discipline for the device and create devfs entries.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * known -> basic: request irq line for the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * basic -> ready: do the initial analysis, e.g. format detection,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * do block device setup and detect partitions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * ready -> online: schedule the device tasklet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * Things to do for shutdown state transitions:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * online -> ready: just set the new device state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * ready -> basic: flush requests from the block device layer, clear
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * partition information and reset format information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * basic -> known: terminate all requests and free irq.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * known -> new: remove devfs entries and forget discipline.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define DASD_STATE_NEW 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define DASD_STATE_KNOWN 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define DASD_STATE_BASIC 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define DASD_STATE_UNFMT 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define DASD_STATE_READY 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define DASD_STATE_ONLINE 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <linux/genhd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include <linux/hdreg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include <linux/log2.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <asm/ccwdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #include <asm/debug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #include <asm/dasd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #include <asm/idals.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #include <linux/blk-mq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) /* DASD discipline magic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define DASD_ECKD_MAGIC 0xC5C3D2C4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define DASD_DIAG_MAGIC 0xC4C9C1C7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define DASD_FBA_MAGIC 0xC6C2C140
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * SECTION: Type definitions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct dasd_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct dasd_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /* BIT DEFINITIONS FOR SENSE DATA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #define DASD_SENSE_BIT_0 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define DASD_SENSE_BIT_1 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define DASD_SENSE_BIT_2 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define DASD_SENSE_BIT_3 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /* BIT DEFINITIONS FOR SIM SENSE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define DASD_SIM_SENSE 0x0F
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define DASD_SIM_MSG_TO_OP 0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define DASD_SIM_LOG 0x0C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* lock class for nested cdev lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define CDEV_NESTED_FIRST 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define CDEV_NESTED_SECOND 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * SECTION: MACROs for klogd and s390 debug feature (dbf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define DBF_DEV_EVENT(d_level, d_device, d_str, d_data...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) debug_sprintf_event(d_device->debug_area, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) d_level, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) d_str "\n", \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) d_data); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) } while(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #define DBF_EVENT(d_level, d_str, d_data...)\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) debug_sprintf_event(dasd_debug_area, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) d_level,\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) d_str "\n", \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) d_data); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) } while(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define DBF_EVENT_DEVID(d_level, d_cdev, d_str, d_data...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct ccw_dev_id __dev_id; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) ccw_device_get_id(d_cdev, &__dev_id); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) debug_sprintf_event(dasd_debug_area, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) d_level, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) "0.%x.%04x " d_str "\n", \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) __dev_id.ssid, __dev_id.devno, d_data); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /* limit size for an errorstring */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #define ERRORLENGTH 30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /* definition of dbf debug levels */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) #define DBF_EMERG 0 /* system is unusable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #define DBF_ALERT 1 /* action must be taken immediately */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #define DBF_CRIT 2 /* critical conditions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #define DBF_ERR 3 /* error conditions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) #define DBF_WARNING 4 /* warning conditions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) #define DBF_NOTICE 5 /* normal but significant condition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) #define DBF_INFO 6 /* informational */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #define DBF_DEBUG 6 /* debug-level messages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /* messages to be written via klogd and dbf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) #define DEV_MESSAGE(d_loglevel,d_device,d_string,d_args...)\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) dev_name(&d_device->cdev->dev), d_args); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) DBF_DEV_EVENT(DBF_ALERT, d_device, d_string, d_args); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) } while(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #define MESSAGE(d_loglevel,d_string,d_args...)\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) DBF_EVENT(DBF_ALERT, d_string, d_args); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) } while(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) /* messages to be written via klogd only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #define DEV_MESSAGE_LOG(d_loglevel,d_device,d_string,d_args...)\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) dev_name(&d_device->cdev->dev), d_args); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) } while(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #define MESSAGE_LOG(d_loglevel,d_string,d_args...)\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) } while(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) /* Macro to calculate number of blocks per page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #define BLOCKS_PER_PAGE(blksize) (PAGE_SIZE / blksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) struct dasd_ccw_req {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) unsigned int magic; /* Eye catcher */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) int intrc; /* internal error, e.g. from start_IO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct list_head devlist; /* for dasd_device request queue */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct list_head blocklist; /* for dasd_block request queue */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct dasd_block *block; /* the originating block device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct dasd_device *memdev; /* the device used to allocate this */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) struct dasd_device *startdev; /* device the request is started on */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) struct dasd_device *basedev; /* base device if no block->base */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) void *cpaddr; /* address of ccw or tcw */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) short retries; /* A retry counter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) unsigned char cpmode; /* 0 = cmd mode, 1 = itcw */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) char status; /* status of this request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) char lpm; /* logical path mask */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) unsigned long flags; /* flags of this request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) struct dasd_queue *dq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) unsigned long starttime; /* jiffies time of request start */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) unsigned long expires; /* expiration period in jiffies */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) void *data; /* pointer to data area */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) struct irb irb; /* device status in case of an error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct dasd_ccw_req *refers; /* ERP-chain queueing. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) void *function; /* originating ERP action */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) void *mem_chunk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) unsigned long buildclk; /* TOD-clock of request generation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) unsigned long startclk; /* TOD-clock of request start */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) unsigned long stopclk; /* TOD-clock of request interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) unsigned long endclk; /* TOD-clock of request termination */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) void (*callback)(struct dasd_ccw_req *, void *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) void *callback_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) unsigned int proc_bytes; /* bytes for partial completion */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * dasd_ccw_req -> status can be:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) #define DASD_CQR_FILLED 0x00 /* request is ready to be processed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) #define DASD_CQR_DONE 0x01 /* request is completed successfully */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) #define DASD_CQR_NEED_ERP 0x02 /* request needs recovery action */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) #define DASD_CQR_IN_ERP 0x03 /* request is in recovery */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) #define DASD_CQR_FAILED 0x04 /* request is finally failed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) #define DASD_CQR_TERMINATED 0x05 /* request was stopped by driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) #define DASD_CQR_QUEUED 0x80 /* request is queued to be processed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) #define DASD_CQR_IN_IO 0x81 /* request is currently in IO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) #define DASD_CQR_ERROR 0x82 /* request is completed with error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) #define DASD_CQR_CLEAR_PENDING 0x83 /* request is clear pending */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) #define DASD_CQR_CLEARED 0x84 /* request was cleared */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) #define DASD_CQR_SUCCESS 0x85 /* request was successful */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) /* default expiration time*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #define DASD_EXPIRES 300
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #define DASD_EXPIRES_MAX 40000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) #define DASD_RETRIES 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) #define DASD_RETRIES_MAX 32768
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) /* per dasd_ccw_req flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) #define DASD_CQR_FLAGS_USE_ERP 0 /* use ERP for this request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) #define DASD_CQR_FLAGS_FAILFAST 1 /* FAILFAST */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) #define DASD_CQR_VERIFY_PATH 2 /* path verification request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) #define DASD_CQR_ALLOW_SLOCK 3 /* Try this request even when lock was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * stolen. Should not be combined with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * DASD_CQR_FLAGS_USE_ERP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) * The following flags are used to suppress output of certain errors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) #define DASD_CQR_SUPPRESS_NRF 4 /* Suppress 'No Record Found' error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) #define DASD_CQR_SUPPRESS_FP 5 /* Suppress 'File Protected' error*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) #define DASD_CQR_SUPPRESS_IL 6 /* Suppress 'Incorrect Length' error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) #define DASD_CQR_SUPPRESS_CR 7 /* Suppress 'Command Reject' error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) #define DASD_REQ_PER_DEV 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /* Signature for error recovery functions. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) typedef struct dasd_ccw_req *(*dasd_erp_fn_t) (struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * A single CQR can only contain a maximum of 255 CCWs. It is limited by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * the locate record and locate record extended count value which can only hold
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) * 1 Byte max.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) #define DASD_CQR_MAX_CCW 255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * Unique identifier for dasd device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) #define UA_NOT_CONFIGURED 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) #define UA_BASE_DEVICE 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) #define UA_BASE_PAV_ALIAS 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #define UA_HYPER_PAV_ALIAS 0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) struct dasd_uid {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) __u8 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) char vendor[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) char serial[15];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) __u16 ssid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) __u8 real_unit_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) __u8 base_unit_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) char vduit[33];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * the struct dasd_discipline is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * sth like a table of virtual functions, if you think of dasd_eckd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * inheriting dasd...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) * no, currently we are not planning to reimplement the driver in C++
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct dasd_discipline {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) struct module *owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) char ebcname[8]; /* a name used for tagging and printks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) char name[8]; /* a name used for tagging and printks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) struct list_head list; /* used for list of disciplines */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * Device recognition functions. check_device is used to verify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * the sense data and the information returned by read device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * characteristics. It returns 0 if the discipline can be used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) * for the device in question. uncheck_device is called during
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * device shutdown to deregister a device from its discipline.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) int (*check_device) (struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) void (*uncheck_device) (struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) * do_analysis is used in the step from device state "basic" to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * state "accept". It returns 0 if the device can be made ready,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) * it returns -EMEDIUMTYPE if the device can't be made ready or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) * -EAGAIN if do_analysis started a ccw that needs to complete
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) * before the analysis may be repeated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) int (*do_analysis) (struct dasd_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) * This function is called, when new paths become available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) * Disciplins may use this callback to do necessary setup work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) * e.g. verify that new path is compatible with the current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * configuration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) int (*verify_path)(struct dasd_device *, __u8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) * Last things to do when a device is set online, and first things
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) * when it is set offline.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) int (*basic_to_ready) (struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) int (*online_to_ready) (struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) int (*basic_to_known)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) * Initialize block layer request queue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) void (*setup_blk_queue)(struct dasd_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) /* (struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) * Device operation functions. build_cp creates a ccw chain for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * a block device request, start_io starts the request and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * term_IO cancels it (e.g. in case of a timeout). format_device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * formats the device and check_device_format compares the format of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * a device with the expected format_data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) * handle_terminated_request allows to examine a cqr and prepare
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) * it for retry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) struct dasd_ccw_req *(*build_cp) (struct dasd_device *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) struct dasd_block *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) struct request *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) int (*start_IO) (struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) int (*term_IO) (struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) void (*handle_terminated_request) (struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) int (*format_device) (struct dasd_device *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct format_data_t *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) int (*check_device_format)(struct dasd_device *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) struct format_check_t *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) int (*free_cp) (struct dasd_ccw_req *, struct request *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) * Error recovery functions. examine_error() returns a value that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) * indicates what to do for an error condition. If examine_error()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) * returns 'dasd_era_recover' erp_action() is called to create a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) * special error recovery ccw. erp_postaction() is called after
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) * an error recovery ccw has finished its execution. dump_sense
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) * is called for every error condition to print the sense data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) * to the console.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) dasd_erp_fn_t(*erp_action) (struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) dasd_erp_fn_t(*erp_postaction) (struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) void (*dump_sense) (struct dasd_device *, struct dasd_ccw_req *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) struct irb *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) void (*dump_sense_dbf) (struct dasd_device *, struct irb *, char *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) void (*check_for_device_change) (struct dasd_device *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) struct dasd_ccw_req *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) struct irb *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) /* i/o control functions. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) int (*fill_geometry) (struct dasd_block *, struct hd_geometry *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) int (*fill_info) (struct dasd_device *, struct dasd_information2_t *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) int (*ioctl) (struct dasd_block *, unsigned int, void __user *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) /* suspend/resume functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) int (*freeze) (struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) int (*restore) (struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) /* reload device after state change */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) int (*reload) (struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) int (*get_uid) (struct dasd_device *, struct dasd_uid *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) void (*kick_validate) (struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) int (*check_attention)(struct dasd_device *, __u8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) int (*host_access_count)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) int (*hosts_print)(struct dasd_device *, struct seq_file *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) void (*handle_hpf_error)(struct dasd_device *, struct irb *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) void (*disable_hpf)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) int (*hpf_enabled)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) void (*reset_path)(struct dasd_device *, __u8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) * Extent Space Efficient (ESE) relevant functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) int (*is_ese)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) /* Capacity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) int (*space_allocated)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) int (*space_configured)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) int (*logical_capacity)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) int (*release_space)(struct dasd_device *, struct format_data_t *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) /* Extent Pool */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) int (*ext_pool_id)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) int (*ext_size)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) int (*ext_pool_cap_at_warnlevel)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) int (*ext_pool_warn_thrshld)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) int (*ext_pool_oos)(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) int (*ext_pool_exhaust)(struct dasd_device *, struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) struct dasd_ccw_req *(*ese_format)(struct dasd_device *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) struct dasd_ccw_req *, struct irb *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) int (*ese_read)(struct dasd_ccw_req *, struct irb *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) extern struct dasd_discipline *dasd_diag_discipline_pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * Notification numbers for extended error reporting notifications:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) * The DASD_EER_DISABLE notification is sent before a dasd_device (and it's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * eer pointer) is freed. The error reporting module needs to do all necessary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * cleanup steps.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) * The DASD_EER_TRIGGER notification sends the actual error reports (triggers).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) #define DASD_EER_DISABLE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) #define DASD_EER_TRIGGER 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) /* Trigger IDs for extended error reporting DASD_EER_TRIGGER notification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) #define DASD_EER_FATALERROR 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) #define DASD_EER_NOPATH 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) #define DASD_EER_STATECHANGE 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) #define DASD_EER_PPRCSUSPEND 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) #define DASD_EER_NOSPC 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) /* DASD path handling */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) #define DASD_PATH_OPERATIONAL 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) #define DASD_PATH_TBV 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) #define DASD_PATH_PP 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) #define DASD_PATH_NPP 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) #define DASD_PATH_MISCABLED 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) #define DASD_PATH_NOHPF 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) #define DASD_PATH_CUIR 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) #define DASD_PATH_IFCC 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) #define DASD_THRHLD_MAX 4294967295U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) #define DASD_INTERVAL_MAX 4294967295U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) struct dasd_path {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) u8 cssid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) u8 ssid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) u8 chpid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) struct dasd_conf_data *conf_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) atomic_t error_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) unsigned long errorclk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) struct dasd_profile_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) /* legacy part of profile data, as in dasd_profile_info_t */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) unsigned int dasd_io_reqs; /* number of requests processed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) unsigned int dasd_io_sects; /* number of sectors processed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) unsigned int dasd_io_secs[32]; /* histogram of request's sizes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) unsigned int dasd_io_times[32]; /* histogram of requests's times */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) unsigned int dasd_io_timps[32]; /* h. of requests's times per sector */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) unsigned int dasd_io_time1[32]; /* hist. of time from build to start */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) unsigned int dasd_io_time2[32]; /* hist. of time from start to irq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) unsigned int dasd_io_time2ps[32]; /* hist. of time from start to irq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) unsigned int dasd_io_time3[32]; /* hist. of time from irq to end */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) unsigned int dasd_io_nr_req[32]; /* hist. of # of requests in chanq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) /* new data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) struct timespec64 starttod; /* time of start or last reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) unsigned int dasd_io_alias; /* requests using an alias */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) unsigned int dasd_io_tpm; /* requests using transport mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) unsigned int dasd_read_reqs; /* total number of read requests */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) unsigned int dasd_read_sects; /* total number read sectors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) unsigned int dasd_read_alias; /* read request using an alias */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) unsigned int dasd_read_tpm; /* read requests in transport mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) unsigned int dasd_read_secs[32]; /* histogram of request's sizes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) unsigned int dasd_read_times[32]; /* histogram of requests's times */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) unsigned int dasd_read_time1[32]; /* hist. time from build to start */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) unsigned int dasd_read_time2[32]; /* hist. of time from start to irq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) unsigned int dasd_read_time3[32]; /* hist. of time from irq to end */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) unsigned int dasd_read_nr_req[32]; /* hist. of # of requests in chanq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) unsigned long dasd_sum_times; /* sum of request times */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) unsigned long dasd_sum_time_str; /* sum of time from build to start */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) unsigned long dasd_sum_time_irq; /* sum of time from start to irq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) unsigned long dasd_sum_time_end; /* sum of time from irq to end */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) struct dasd_profile {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) struct dentry *dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) struct dasd_profile_info *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) struct dasd_format_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) sector_t track;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) struct dasd_device {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) /* Block device stuff. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) struct dasd_block *block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) unsigned int devindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) unsigned long flags; /* per device flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) unsigned short features; /* copy of devmap-features (read-only!) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) /* extended error reporting stuff (eer) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) struct dasd_ccw_req *eer_cqr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) /* Device discipline stuff. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) struct dasd_discipline *discipline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) struct dasd_discipline *base_discipline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) void *private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) struct dasd_path path[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) __u8 opm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) /* Device state and target state. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) int state, target;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) struct mutex state_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) int stopped; /* device (ccw_device_start) was stopped */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) /* reference count. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) atomic_t ref_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) /* ccw queue and memory for static ccw/erp buffers. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) struct list_head ccw_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) spinlock_t mem_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) void *ccw_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) void *erp_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) void *ese_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) struct list_head ccw_chunks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) struct list_head erp_chunks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) struct list_head ese_chunks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) atomic_t tasklet_scheduled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) struct tasklet_struct tasklet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) struct work_struct kick_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) struct work_struct restore_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) struct work_struct reload_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) struct work_struct kick_validate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) struct work_struct suc_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) struct work_struct requeue_requests;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) struct timer_list timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) debug_info_t *debug_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) struct ccw_device *cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) /* hook for alias management */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) struct list_head alias_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) /* default expiration time in s */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) unsigned long default_expires;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) unsigned long default_retries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) unsigned long blk_timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) unsigned long path_thrhld;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) unsigned long path_interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) struct dentry *debugfs_dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) struct dentry *hosts_dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) struct dasd_profile profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) struct dasd_format_entry format_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) struct dasd_block {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) /* Block device stuff. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) struct gendisk *gdp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) struct request_queue *request_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) spinlock_t request_queue_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) struct blk_mq_tag_set tag_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) struct block_device *bdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) atomic_t open_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) unsigned long blocks; /* size of volume in blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) unsigned int bp_block; /* bytes per block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) unsigned int s2b_shift; /* log2 (bp_block/512) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) struct dasd_device *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) struct list_head ccw_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) spinlock_t queue_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) atomic_t tasklet_scheduled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) struct tasklet_struct tasklet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) struct timer_list timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) struct dentry *debugfs_dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) struct dasd_profile profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) struct list_head format_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) spinlock_t format_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) struct dasd_attention_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) struct dasd_device *device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) __u8 lpum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) struct dasd_queue {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) /* reasons why device (ccw_device_start) was stopped */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) #define DASD_STOPPED_NOT_ACC 1 /* not accessible */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) #define DASD_STOPPED_QUIESCE 2 /* Quiesced */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) #define DASD_STOPPED_PENDING 4 /* long busy */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) #define DASD_STOPPED_DC_WAIT 8 /* disconnected, wait */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) #define DASD_STOPPED_SU 16 /* summary unit check handling */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) #define DASD_STOPPED_PM 32 /* pm state transition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) #define DASD_UNRESUMED_PM 64 /* pm resume failed state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) #define DASD_STOPPED_NOSPC 128 /* no space left */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) /* per device flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) #define DASD_FLAG_OFFLINE 3 /* device is in offline processing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) #define DASD_FLAG_EER_SNSS 4 /* A SNSS is required */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) #define DASD_FLAG_EER_IN_USE 5 /* A SNSS request is running */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) #define DASD_FLAG_DEVICE_RO 6 /* The device itself is read-only. Don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) * confuse this with the user specified
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) * read-only feature.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) #define DASD_FLAG_IS_RESERVED 7 /* The device is reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) #define DASD_FLAG_LOCK_STOLEN 8 /* The device lock was stolen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) #define DASD_FLAG_SUSPENDED 9 /* The device was suspended */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) #define DASD_FLAG_SAFE_OFFLINE 10 /* safe offline processing requested*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) #define DASD_FLAG_SAFE_OFFLINE_RUNNING 11 /* safe offline running */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) #define DASD_FLAG_ABORTALL 12 /* Abort all noretry requests */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) #define DASD_FLAG_PATH_VERIFY 13 /* Path verification worker running */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) #define DASD_FLAG_SUC 14 /* unhandled summary unit check */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) #define DASD_SLEEPON_START_TAG ((void *) 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) #define DASD_SLEEPON_END_TAG ((void *) 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) void dasd_put_device_wake(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) * Reference count inliners
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) dasd_get_device(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) atomic_inc(&device->ref_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) dasd_put_device(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) if (atomic_dec_return(&device->ref_count) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) dasd_put_device_wake(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) * The static memory in ccw_mem and erp_mem is managed by a sorted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) * list of free memory chunks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) struct dasd_mchunk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) unsigned long size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) } __attribute__ ((aligned(8)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) dasd_init_chunklist(struct list_head *chunk_list, void *mem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) unsigned long size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) struct dasd_mchunk *chunk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) INIT_LIST_HEAD(chunk_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) chunk = (struct dasd_mchunk *) mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) chunk->size = size - sizeof(struct dasd_mchunk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) list_add(&chunk->list, chunk_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) static inline void *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) dasd_alloc_chunk(struct list_head *chunk_list, unsigned long size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) struct dasd_mchunk *chunk, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) size = (size + 7L) & -8L;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) list_for_each_entry(chunk, chunk_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) if (chunk->size < size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) if (chunk->size > size + sizeof(struct dasd_mchunk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) char *endaddr = (char *) (chunk + 1) + chunk->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) tmp = (struct dasd_mchunk *) (endaddr - size) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) tmp->size = size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) chunk->size -= size + sizeof(struct dasd_mchunk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) chunk = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) list_del(&chunk->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) return (void *) (chunk + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) dasd_free_chunk(struct list_head *chunk_list, void *mem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) struct dasd_mchunk *chunk, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) struct list_head *p, *left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) chunk = (struct dasd_mchunk *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) ((char *) mem - sizeof(struct dasd_mchunk));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) /* Find out the left neighbour in chunk_list. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) left = chunk_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) list_for_each(p, chunk_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) if (list_entry(p, struct dasd_mchunk, list) > chunk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) left = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) /* Try to merge with right neighbour = next element from left. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) if (left->next != chunk_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) tmp = list_entry(left->next, struct dasd_mchunk, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) if ((char *) (chunk + 1) + chunk->size == (char *) tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) list_del(&tmp->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) chunk->size += tmp->size + sizeof(struct dasd_mchunk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) /* Try to merge with left neighbour. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) if (left != chunk_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) tmp = list_entry(left, struct dasd_mchunk, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) if ((char *) (tmp + 1) + tmp->size == (char *) chunk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) tmp->size += chunk->size + sizeof(struct dasd_mchunk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) __list_add(&chunk->list, left, left->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) * Check if bsize is in { 512, 1024, 2048, 4096 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) static inline int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) dasd_check_blocksize(int bsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) if (bsize < 512 || bsize > 4096 || !is_power_of_2(bsize))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) return -EMEDIUMTYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) /* externals in dasd.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) #define DASD_PROFILE_OFF 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) #define DASD_PROFILE_ON 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) #define DASD_PROFILE_GLOBAL_ONLY 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) extern debug_info_t *dasd_debug_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) extern struct dasd_profile dasd_global_profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) extern unsigned int dasd_global_profile_level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) extern const struct block_device_operations dasd_device_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) extern struct kmem_cache *dasd_page_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) struct dasd_ccw_req *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) dasd_smalloc_request(int, int, int, struct dasd_device *, struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) struct dasd_ccw_req *dasd_fmalloc_request(int, int, int, struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) void dasd_sfree_request(struct dasd_ccw_req *, struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) void dasd_ffree_request(struct dasd_ccw_req *, struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) void dasd_wakeup_cb(struct dasd_ccw_req *, void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) struct dasd_device *dasd_alloc_device(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) void dasd_free_device(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) struct dasd_block *dasd_alloc_block(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) void dasd_free_block(struct dasd_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) enum blk_eh_timer_return dasd_times_out(struct request *req, bool reserved);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) void dasd_enable_device(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) void dasd_set_target_state(struct dasd_device *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) void dasd_kick_device(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) void dasd_restore_device(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) void dasd_reload_device(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) void dasd_schedule_requeue(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) void dasd_add_request_head(struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) void dasd_add_request_tail(struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) int dasd_start_IO(struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) int dasd_term_IO(struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) void dasd_schedule_device_bh(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) void dasd_schedule_block_bh(struct dasd_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) int dasd_sleep_on(struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) int dasd_sleep_on_queue(struct list_head *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) int dasd_sleep_on_immediatly(struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) int dasd_sleep_on_queue_interruptible(struct list_head *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) int dasd_sleep_on_interruptible(struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) void dasd_device_set_timer(struct dasd_device *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) void dasd_device_clear_timer(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) void dasd_block_set_timer(struct dasd_block *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) void dasd_block_clear_timer(struct dasd_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) int dasd_cancel_req(struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) int dasd_flush_device_queue(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) int dasd_generic_probe (struct ccw_device *, struct dasd_discipline *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) void dasd_generic_free_discipline(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) void dasd_generic_remove (struct ccw_device *cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) int dasd_generic_set_offline (struct ccw_device *cdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) int dasd_generic_notify(struct ccw_device *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) int dasd_generic_last_path_gone(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) int dasd_generic_path_operational(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) void dasd_generic_shutdown(struct ccw_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) void dasd_generic_handle_state_change(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) int dasd_generic_pm_freeze(struct ccw_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) int dasd_generic_restore_device(struct ccw_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) enum uc_todo dasd_generic_uc_handler(struct ccw_device *, struct irb *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) void dasd_generic_path_event(struct ccw_device *, int *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) int dasd_generic_verify_path(struct dasd_device *, __u8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) void dasd_generic_space_exhaust(struct dasd_device *, struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) void dasd_generic_space_avail(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) int dasd_generic_read_dev_chars(struct dasd_device *, int, void *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) char *dasd_get_sense(struct irb *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) void dasd_device_set_stop_bits(struct dasd_device *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) void dasd_device_remove_stop_bits(struct dasd_device *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) int dasd_device_is_ro(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) void dasd_profile_reset(struct dasd_profile *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) int dasd_profile_on(struct dasd_profile *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) void dasd_profile_off(struct dasd_profile *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) char *dasd_get_user_string(const char __user *, size_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) /* externals in dasd_devmap.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) extern int dasd_max_devindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) extern int dasd_probeonly;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) extern int dasd_autodetect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) extern int dasd_nopav;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) extern int dasd_nofcx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) int dasd_devmap_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) void dasd_devmap_exit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) struct dasd_device *dasd_create_device(struct ccw_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) void dasd_delete_device(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) int dasd_get_feature(struct ccw_device *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) int dasd_set_feature(struct ccw_device *, int, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) int dasd_add_sysfs_files(struct ccw_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) void dasd_remove_sysfs_files(struct ccw_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) struct dasd_device *dasd_device_from_cdev(struct ccw_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) struct dasd_device *dasd_device_from_cdev_locked(struct ccw_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) struct dasd_device *dasd_device_from_devindex(int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) void dasd_add_link_to_gendisk(struct gendisk *, struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) struct dasd_device *dasd_device_from_gendisk(struct gendisk *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) int dasd_parse(void) __init;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) int dasd_busid_known(const char *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) /* externals in dasd_gendisk.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) int dasd_gendisk_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) void dasd_gendisk_exit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) int dasd_gendisk_alloc(struct dasd_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) void dasd_gendisk_free(struct dasd_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) int dasd_scan_partitions(struct dasd_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) void dasd_destroy_partitions(struct dasd_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) /* externals in dasd_ioctl.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) int dasd_ioctl(struct block_device *, fmode_t, unsigned int, unsigned long);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) /* externals in dasd_proc.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) int dasd_proc_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) void dasd_proc_exit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) /* externals in dasd_erp.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) struct dasd_ccw_req *dasd_default_erp_action(struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) struct dasd_ccw_req *dasd_default_erp_postaction(struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) struct dasd_ccw_req *dasd_alloc_erp_request(char *, int, int,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) void dasd_free_erp_request(struct dasd_ccw_req *, struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) void dasd_log_sense(struct dasd_ccw_req *, struct irb *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) void dasd_log_sense_dbf(struct dasd_ccw_req *cqr, struct irb *irb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) /* externals in dasd_3990_erp.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) struct dasd_ccw_req *dasd_3990_erp_action(struct dasd_ccw_req *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) void dasd_3990_erp_handle_sim(struct dasd_device *, char *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) /* externals in dasd_eer.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) #ifdef CONFIG_DASD_EER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) int dasd_eer_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) void dasd_eer_exit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) int dasd_eer_enable(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) void dasd_eer_disable(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) void dasd_eer_write(struct dasd_device *, struct dasd_ccw_req *cqr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) unsigned int id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) void dasd_eer_snss(struct dasd_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) static inline int dasd_eer_enabled(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) return device->eer_cqr != NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) #define dasd_eer_init() (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) #define dasd_eer_exit() do { } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) #define dasd_eer_enable(d) (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) #define dasd_eer_disable(d) do { } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) #define dasd_eer_write(d,c,i) do { } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) #define dasd_eer_snss(d) do { } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) #define dasd_eer_enabled(d) (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) #endif /* CONFIG_DASD_ERR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) /* DASD path handling functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) * helper functions to modify bit masks for a given channel path for a device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) static inline int dasd_path_is_operational(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) return test_bit(DASD_PATH_OPERATIONAL, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) static inline int dasd_path_need_verify(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) return test_bit(DASD_PATH_TBV, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) static inline void dasd_path_verify(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) __set_bit(DASD_PATH_TBV, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) static inline void dasd_path_clear_verify(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) __clear_bit(DASD_PATH_TBV, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) static inline void dasd_path_clear_all_verify(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) dasd_path_clear_verify(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) static inline void dasd_path_operational(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) __set_bit(DASD_PATH_OPERATIONAL, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) device->opm |= (0x80 >> chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) static inline void dasd_path_nonpreferred(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) __set_bit(DASD_PATH_NPP, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) static inline int dasd_path_is_nonpreferred(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) return test_bit(DASD_PATH_NPP, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) static inline void dasd_path_clear_nonpreferred(struct dasd_device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) __clear_bit(DASD_PATH_NPP, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) static inline void dasd_path_preferred(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) __set_bit(DASD_PATH_PP, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) static inline int dasd_path_is_preferred(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) return test_bit(DASD_PATH_PP, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) static inline void dasd_path_clear_preferred(struct dasd_device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) __clear_bit(DASD_PATH_PP, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) static inline void dasd_path_clear_oper(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) __clear_bit(DASD_PATH_OPERATIONAL, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) device->opm &= ~(0x80 >> chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) static inline void dasd_path_clear_cable(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) __clear_bit(DASD_PATH_MISCABLED, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) static inline void dasd_path_cuir(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) __set_bit(DASD_PATH_CUIR, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) static inline int dasd_path_is_cuir(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) return test_bit(DASD_PATH_CUIR, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) static inline void dasd_path_clear_cuir(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) __clear_bit(DASD_PATH_CUIR, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) static inline void dasd_path_ifcc(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) set_bit(DASD_PATH_IFCC, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) static inline int dasd_path_is_ifcc(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) return test_bit(DASD_PATH_IFCC, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) static inline void dasd_path_clear_ifcc(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) clear_bit(DASD_PATH_IFCC, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) static inline void dasd_path_clear_nohpf(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) __clear_bit(DASD_PATH_NOHPF, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) static inline void dasd_path_miscabled(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) __set_bit(DASD_PATH_MISCABLED, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) static inline int dasd_path_is_miscabled(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) return test_bit(DASD_PATH_MISCABLED, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) static inline void dasd_path_nohpf(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) __set_bit(DASD_PATH_NOHPF, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) static inline int dasd_path_is_nohpf(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) return test_bit(DASD_PATH_NOHPF, &device->path[chp].flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) * get functions for path masks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) * will return a path masks for the given device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) static inline __u8 dasd_path_get_opm(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) return device->opm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) static inline __u8 dasd_path_get_tbvpm(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) __u8 tbvpm = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) if (dasd_path_need_verify(device, chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) tbvpm |= 0x80 >> chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) return tbvpm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) static inline __u8 dasd_path_get_nppm(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) __u8 npm = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) for (chp = 0; chp < 8; chp++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) if (dasd_path_is_nonpreferred(device, chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) npm |= 0x80 >> chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) return npm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) static inline __u8 dasd_path_get_ppm(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) __u8 ppm = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) if (dasd_path_is_preferred(device, chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) ppm |= 0x80 >> chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) return ppm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) static inline __u8 dasd_path_get_cablepm(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) __u8 cablepm = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) if (dasd_path_is_miscabled(device, chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) cablepm |= 0x80 >> chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) return cablepm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) static inline __u8 dasd_path_get_cuirpm(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) __u8 cuirpm = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) if (dasd_path_is_cuir(device, chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) cuirpm |= 0x80 >> chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) return cuirpm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) static inline __u8 dasd_path_get_ifccpm(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) __u8 ifccpm = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) if (dasd_path_is_ifcc(device, chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) ifccpm |= 0x80 >> chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) return ifccpm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) static inline __u8 dasd_path_get_hpfpm(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) __u8 hpfpm = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) if (dasd_path_is_nohpf(device, chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) hpfpm |= 0x80 >> chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) return hpfpm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) * add functions for path masks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) * the existing path mask will be extended by the given path mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) static inline void dasd_path_add_tbvpm(struct dasd_device *device, __u8 pm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) if (pm & (0x80 >> chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) dasd_path_verify(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) static inline __u8 dasd_path_get_notoperpm(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) __u8 nopm = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) if (dasd_path_is_nohpf(device, chp) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) dasd_path_is_ifcc(device, chp) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) dasd_path_is_cuir(device, chp) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) dasd_path_is_miscabled(device, chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) nopm |= 0x80 >> chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) return nopm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) static inline void dasd_path_add_opm(struct dasd_device *device, __u8 pm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) if (pm & (0x80 >> chp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) dasd_path_operational(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) * if the path is used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) * it should not be in one of the negative lists
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) dasd_path_clear_nohpf(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) dasd_path_clear_cuir(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) dasd_path_clear_cable(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) dasd_path_clear_ifcc(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) static inline void dasd_path_add_cablepm(struct dasd_device *device, __u8 pm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) if (pm & (0x80 >> chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) dasd_path_miscabled(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) static inline void dasd_path_add_cuirpm(struct dasd_device *device, __u8 pm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) if (pm & (0x80 >> chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) dasd_path_cuir(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) static inline void dasd_path_add_ifccpm(struct dasd_device *device, __u8 pm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) if (pm & (0x80 >> chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) dasd_path_ifcc(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) static inline void dasd_path_add_nppm(struct dasd_device *device, __u8 pm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) if (pm & (0x80 >> chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) dasd_path_nonpreferred(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) static inline void dasd_path_add_nohpfpm(struct dasd_device *device, __u8 pm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) if (pm & (0x80 >> chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) dasd_path_nohpf(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) static inline void dasd_path_add_ppm(struct dasd_device *device, __u8 pm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) if (pm & (0x80 >> chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) dasd_path_preferred(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) * set functions for path masks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) * the existing path mask will be replaced by the given path mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) static inline void dasd_path_set_tbvpm(struct dasd_device *device, __u8 pm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) if (pm & (0x80 >> chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) dasd_path_verify(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) dasd_path_clear_verify(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) static inline void dasd_path_set_opm(struct dasd_device *device, __u8 pm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) for (chp = 0; chp < 8; chp++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) dasd_path_clear_oper(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) if (pm & (0x80 >> chp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) dasd_path_operational(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) * if the path is used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) * it should not be in one of the negative lists
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) dasd_path_clear_nohpf(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) dasd_path_clear_cuir(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) dasd_path_clear_cable(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) dasd_path_clear_ifcc(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) * remove functions for path masks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) * the existing path mask will be cleared with the given path mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) static inline void dasd_path_remove_opm(struct dasd_device *device, __u8 pm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) for (chp = 0; chp < 8; chp++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) if (pm & (0x80 >> chp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) dasd_path_clear_oper(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) * add the newly available path to the to be verified pm and remove it from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) * normal operation until it is verified
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) static inline void dasd_path_available(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) dasd_path_clear_oper(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) dasd_path_verify(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) static inline void dasd_path_notoper(struct dasd_device *device, int chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) dasd_path_clear_oper(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) dasd_path_clear_preferred(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) dasd_path_clear_nonpreferred(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) * remove all paths from normal operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) static inline void dasd_path_no_path(struct dasd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) int chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) for (chp = 0; chp < 8; chp++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) dasd_path_notoper(device, chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) dasd_path_clear_all_verify(device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) /* end - path handling */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) #endif /* DASD_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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