^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) * S/390 common I/O routines -- channel subsystem call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright IBM Corp. 1999,2012
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author(s): Ingo Adlung (adlung@de.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Cornelia Huck (cornelia.huck@de.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Arnd Bergmann (arndb@de.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define KMSG_COMPONENT "cio"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/cio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/chpid.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <asm/chsc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <asm/crw.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <asm/isc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <asm/ebcdic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <asm/ap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include "css.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include "cio.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "cio_debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include "ioasm.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include "chp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include "chsc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static void *sei_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static void *chsc_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static DEFINE_SPINLOCK(chsc_page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * chsc_error_from_response() - convert a chsc response to an error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * @response: chsc response code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * Returns an appropriate Linux error code for @response.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int chsc_error_from_response(int response)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) switch (response) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) case 0x0001:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) case 0x0002:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) case 0x0003:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) case 0x0006:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) case 0x0007:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) case 0x0008:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) case 0x000a:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) case 0x0104:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) case 0x0004:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) case 0x0106: /* "Wrong Channel Parm" for the op 0x003d */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) case 0x000b:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) case 0x0107: /* "Channel busy" for the op 0x003d */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) case 0x0100:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) case 0x0102:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) case 0x0108: /* "HW limit exceeded" for the op 0x003d */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return -EUSERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) EXPORT_SYMBOL_GPL(chsc_error_from_response);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) struct chsc_ssd_area {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct chsc_header request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) u16 :10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) u16 ssid:2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) u16 :4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) u16 f_sch; /* first subchannel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) u16 :16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) u16 l_sch; /* last subchannel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) u32 :32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) struct chsc_header response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) u32 :32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) u8 sch_valid : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) u8 dev_valid : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) u8 st : 3; /* subchannel type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) u8 zeroes : 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) u8 unit_addr; /* unit address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u16 devno; /* device number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) u8 path_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) u8 fla_valid_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) u16 sch; /* subchannel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) u8 chpid[8]; /* chpids 0-7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) u16 fla[8]; /* full link addresses 0-7 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) } __packed __aligned(PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) int chsc_get_ssd_info(struct subchannel_id schid, struct chsc_ssd_info *ssd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct chsc_ssd_area *ssd_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) int ccode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) int mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) spin_lock_irqsave(&chsc_page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) memset(chsc_page, 0, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) ssd_area = chsc_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) ssd_area->request.length = 0x0010;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) ssd_area->request.code = 0x0004;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) ssd_area->ssid = schid.ssid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) ssd_area->f_sch = schid.sch_no;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) ssd_area->l_sch = schid.sch_no;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) ccode = chsc(ssd_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /* Check response. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (ccode > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) ret = (ccode == 3) ? -ENODEV : -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) ret = chsc_error_from_response(ssd_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (ret != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) CIO_MSG_EVENT(2, "chsc: ssd failed for 0.%x.%04x (rc=%04x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) schid.ssid, schid.sch_no,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) ssd_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (!ssd_area->sch_valid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /* Copy data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) memset(ssd, 0, sizeof(struct chsc_ssd_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if ((ssd_area->st != SUBCHANNEL_TYPE_IO) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) (ssd_area->st != SUBCHANNEL_TYPE_MSG))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) ssd->path_mask = ssd_area->path_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) ssd->fla_valid_mask = ssd_area->fla_valid_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) for (i = 0; i < 8; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) mask = 0x80 >> i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (ssd_area->path_mask & mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) chp_id_init(&ssd->chpid[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) ssd->chpid[i].id = ssd_area->chpid[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (ssd_area->fla_valid_mask & mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) ssd->fla[i] = ssd_area->fla[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) spin_unlock_irqrestore(&chsc_page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * chsc_ssqd() - store subchannel QDIO data (SSQD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * @schid: id of the subchannel on which SSQD is performed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * @ssqd: request and response block for SSQD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * Returns 0 on success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) memset(ssqd, 0, sizeof(*ssqd));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) ssqd->request.length = 0x0010;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) ssqd->request.code = 0x0024;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) ssqd->first_sch = schid.sch_no;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) ssqd->last_sch = schid.sch_no;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) ssqd->ssid = schid.ssid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (chsc(ssqd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return chsc_error_from_response(ssqd->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) EXPORT_SYMBOL_GPL(chsc_ssqd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * chsc_sadc() - set adapter device controls (SADC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * @schid: id of the subchannel on which SADC is performed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * @scssc: request and response block for SADC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * @summary_indicator_addr: summary indicator address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * @subchannel_indicator_addr: subchannel indicator address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * @isc: Interruption Subclass for this subchannel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * Returns 0 on success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) u64 summary_indicator_addr, u64 subchannel_indicator_addr, u8 isc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) memset(scssc, 0, sizeof(*scssc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) scssc->request.length = 0x0fe0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) scssc->request.code = 0x0021;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) scssc->operation_code = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) scssc->summary_indicator_addr = summary_indicator_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) scssc->subchannel_indicator_addr = subchannel_indicator_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) scssc->ks = PAGE_DEFAULT_KEY >> 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) scssc->kc = PAGE_DEFAULT_KEY >> 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) scssc->isc = isc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) scssc->schid = schid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /* enable the time delay disablement facility */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (css_general_characteristics.aif_tdd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) scssc->word_with_d_bit = 0x10000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (chsc(scssc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return chsc_error_from_response(scssc->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) EXPORT_SYMBOL_GPL(chsc_sadc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) static int s390_subchannel_remove_chpid(struct subchannel *sch, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) spin_lock_irq(sch->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (sch->driver && sch->driver->chp_event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) if (sch->driver->chp_event(sch, data, CHP_OFFLINE) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) goto out_unreg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) spin_unlock_irq(sch->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) out_unreg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) sch->lpm = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) spin_unlock_irq(sch->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) css_schedule_eval(sch->schid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) void chsc_chp_offline(struct chp_id chpid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct channel_path *chp = chpid_to_chp(chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) struct chp_link link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) char dbf_txt[15];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) sprintf(dbf_txt, "chpr%x.%02x", chpid.cssid, chpid.id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) CIO_TRACE_EVENT(2, dbf_txt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) if (chp_get_status(chpid) <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) memset(&link, 0, sizeof(struct chp_link));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) link.chpid = chpid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) /* Wait until previous actions have settled. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) css_wait_for_slow_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) mutex_lock(&chp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) chp_update_desc(chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) mutex_unlock(&chp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) for_each_subchannel_staged(s390_subchannel_remove_chpid, NULL, &link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static int __s390_process_res_acc(struct subchannel *sch, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) spin_lock_irq(sch->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (sch->driver && sch->driver->chp_event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) sch->driver->chp_event(sch, data, CHP_ONLINE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) spin_unlock_irq(sch->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static void s390_process_res_acc(struct chp_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) char dbf_txt[15];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) sprintf(dbf_txt, "accpr%x.%02x", link->chpid.cssid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) link->chpid.id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) CIO_TRACE_EVENT( 2, dbf_txt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if (link->fla != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) sprintf(dbf_txt, "fla%x", link->fla);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) CIO_TRACE_EVENT( 2, dbf_txt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) /* Wait until previous actions have settled. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) css_wait_for_slow_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * I/O resources may have become accessible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) * Scan through all subchannels that may be concerned and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) * do a validation on those.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * The more information we have (info), the less scanning
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * will we have to do.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) for_each_subchannel_staged(__s390_process_res_acc, NULL, link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) css_schedule_reprobe();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct chsc_sei_nt0_area {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) u8 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) u8 vf; /* validity flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) u8 rs; /* reporting source */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) u8 cc; /* content code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) u16 fla; /* full link address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) u16 rsid; /* reporting source id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) u32 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) u32 reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) /* ccdf has to be big enough for a link-incident record */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) u8 ccdf[PAGE_SIZE - 24 - 16]; /* content-code dependent field */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) struct chsc_sei_nt2_area {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) u8 flags; /* p and v bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) u8 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) u8 reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) u8 cc; /* content code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) u32 reserved3[13];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) u8 ccdf[PAGE_SIZE - 24 - 56]; /* content-code dependent field */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) #define CHSC_SEI_NT0 (1ULL << 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) #define CHSC_SEI_NT2 (1ULL << 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) struct chsc_sei {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) struct chsc_header request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) u32 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) u64 ntsm; /* notification type mask */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) struct chsc_header response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) u32 :24;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) u8 nt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) struct chsc_sei_nt0_area nt0_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) struct chsc_sei_nt2_area nt2_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) u8 nt_area[PAGE_SIZE - 24];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) } u;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) } __packed __aligned(PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) * Link Incident Record as defined in SA22-7202, "ESCON I/O Interface"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) #define LIR_IQ_CLASS_INFO 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) #define LIR_IQ_CLASS_DEGRADED 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) #define LIR_IQ_CLASS_NOT_OPERATIONAL 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) struct lir {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) u32 null:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) u32 reserved:3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) u32 class:2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) u32 reserved2:2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) } __packed iq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) u32 ic:8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) u32 reserved:16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) struct node_descriptor incident_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) struct node_descriptor attached_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) u8 reserved2[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) #define PARAMS_LEN 10 /* PARAMS=xx,xxxxxx */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) #define NODEID_LEN 35 /* NODEID=tttttt/mdl,mmm.ppssssssssssss,xxxx */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) /* Copy EBCIDC text, convert to ASCII and optionally add delimiter. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) static char *store_ebcdic(char *dest, const char *src, unsigned long len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) char delim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) memcpy(dest, src, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) EBCASC(dest, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) if (delim)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) dest[len++] = delim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) return dest + len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) /* Format node ID and parameters for output in LIR log message. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) static void format_node_data(char *params, char *id, struct node_descriptor *nd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) memset(params, 0, PARAMS_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) memset(id, 0, NODEID_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) if (nd->validity != ND_VALIDITY_VALID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) strncpy(params, "n/a", PARAMS_LEN - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) strncpy(id, "n/a", NODEID_LEN - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) /* PARAMS=xx,xxxxxx */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) snprintf(params, PARAMS_LEN, "%02x,%06x", nd->byte0, nd->params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) /* NODEID=tttttt/mdl,mmm.ppssssssssssss,xxxx */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) id = store_ebcdic(id, nd->type, sizeof(nd->type), '/');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) id = store_ebcdic(id, nd->model, sizeof(nd->model), ',');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) id = store_ebcdic(id, nd->manufacturer, sizeof(nd->manufacturer), '.');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) id = store_ebcdic(id, nd->plant, sizeof(nd->plant), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) id = store_ebcdic(id, nd->seq, sizeof(nd->seq), ',');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) sprintf(id, "%04X", nd->tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) static void chsc_process_sei_link_incident(struct chsc_sei_nt0_area *sei_area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) struct lir *lir = (struct lir *) &sei_area->ccdf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) char iuparams[PARAMS_LEN], iunodeid[NODEID_LEN], auparams[PARAMS_LEN],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) aunodeid[NODEID_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) CIO_CRW_EVENT(4, "chsc: link incident (rs=%02x, rs_id=%04x, iq=%02x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) sei_area->rs, sei_area->rsid, sei_area->ccdf[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) /* Ignore NULL Link Incident Records. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) if (lir->iq.null)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) /* Inform user that a link requires maintenance actions because it has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) * become degraded or not operational. Note that this log message is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * the primary intention behind a Link Incident Record. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) format_node_data(iuparams, iunodeid, &lir->incident_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) format_node_data(auparams, aunodeid, &lir->attached_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) switch (lir->iq.class) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) case LIR_IQ_CLASS_DEGRADED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) pr_warn("Link degraded: RS=%02x RSID=%04x IC=%02x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) "IUPARAMS=%s IUNODEID=%s AUPARAMS=%s AUNODEID=%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) sei_area->rs, sei_area->rsid, lir->ic, iuparams,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) iunodeid, auparams, aunodeid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) case LIR_IQ_CLASS_NOT_OPERATIONAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) pr_err("Link stopped: RS=%02x RSID=%04x IC=%02x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) "IUPARAMS=%s IUNODEID=%s AUPARAMS=%s AUNODEID=%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) sei_area->rs, sei_area->rsid, lir->ic, iuparams,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) iunodeid, auparams, aunodeid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) static void chsc_process_sei_res_acc(struct chsc_sei_nt0_area *sei_area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) struct channel_path *chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) struct chp_link link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) struct chp_id chpid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) CIO_CRW_EVENT(4, "chsc: resource accessibility event (rs=%02x, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) "rs_id=%04x)\n", sei_area->rs, sei_area->rsid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (sei_area->rs != 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) chp_id_init(&chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) chpid.id = sei_area->rsid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) /* allocate a new channel path structure, if needed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) status = chp_get_status(chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (!status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (status < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) chp_new(chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) chp = chpid_to_chp(chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) mutex_lock(&chp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) chp_update_desc(chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) mutex_unlock(&chp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) memset(&link, 0, sizeof(struct chp_link));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) link.chpid = chpid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) if ((sei_area->vf & 0xc0) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) link.fla = sei_area->fla;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) if ((sei_area->vf & 0xc0) == 0xc0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) /* full link address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) link.fla_mask = 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) /* link address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) link.fla_mask = 0xff00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) s390_process_res_acc(&link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) static void chsc_process_sei_chp_avail(struct chsc_sei_nt0_area *sei_area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) struct channel_path *chp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) struct chp_id chpid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) u8 *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) int num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) CIO_CRW_EVENT(4, "chsc: channel path availability information\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if (sei_area->rs != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) data = sei_area->ccdf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) chp_id_init(&chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) for (num = 0; num <= __MAX_CHPID; num++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) if (!chp_test_bit(data, num))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) chpid.id = num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) CIO_CRW_EVENT(4, "Update information for channel path "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) "%x.%02x\n", chpid.cssid, chpid.id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) chp = chpid_to_chp(chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) if (!chp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) chp_new(chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) mutex_lock(&chp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) chp_update_desc(chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) mutex_unlock(&chp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) struct chp_config_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) u8 map[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) u8 op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) u8 pc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) static void chsc_process_sei_chp_config(struct chsc_sei_nt0_area *sei_area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) struct chp_config_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) struct chp_id chpid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) int num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) char *events[3] = {"configure", "deconfigure", "cancel deconfigure"};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) CIO_CRW_EVENT(4, "chsc: channel-path-configuration notification\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) if (sei_area->rs != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) data = (struct chp_config_data *) &(sei_area->ccdf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) chp_id_init(&chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) for (num = 0; num <= __MAX_CHPID; num++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (!chp_test_bit(data->map, num))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) chpid.id = num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) pr_notice("Processing %s for channel path %x.%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) events[data->op], chpid.cssid, chpid.id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) switch (data->op) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) chp_cfg_schedule(chpid, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) chp_cfg_schedule(chpid, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) chp_cfg_cancel_deconfigure(chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) static void chsc_process_sei_scm_change(struct chsc_sei_nt0_area *sei_area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) CIO_CRW_EVENT(4, "chsc: scm change notification\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) if (sei_area->rs != 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) ret = scm_update_information();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) CIO_CRW_EVENT(0, "chsc: updating change notification"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) " failed (rc=%d).\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) static void chsc_process_sei_scm_avail(struct chsc_sei_nt0_area *sei_area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) CIO_CRW_EVENT(4, "chsc: scm available information\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) if (sei_area->rs != 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) ret = scm_process_availability_information();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) CIO_CRW_EVENT(0, "chsc: process availability information"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) " failed (rc=%d).\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) static void chsc_process_sei_ap_cfg_chg(struct chsc_sei_nt0_area *sei_area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) CIO_CRW_EVENT(3, "chsc: ap config changed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) if (sei_area->rs != 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) ap_bus_cfg_chg();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) static void chsc_process_sei_nt2(struct chsc_sei_nt2_area *sei_area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) switch (sei_area->cc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) zpci_event_error(sei_area->ccdf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) zpci_event_availability(sei_area->ccdf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) CIO_CRW_EVENT(2, "chsc: sei nt2 unhandled cc=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) sei_area->cc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) }
^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) static void chsc_process_sei_nt0(struct chsc_sei_nt0_area *sei_area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) /* which kind of information was stored? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) switch (sei_area->cc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) case 1: /* link incident*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) chsc_process_sei_link_incident(sei_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) case 2: /* i/o resource accessibility */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) chsc_process_sei_res_acc(sei_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) case 3: /* ap config changed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) chsc_process_sei_ap_cfg_chg(sei_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) case 7: /* channel-path-availability information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) chsc_process_sei_chp_avail(sei_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) case 8: /* channel-path-configuration notification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) chsc_process_sei_chp_config(sei_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) case 12: /* scm change notification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) chsc_process_sei_scm_change(sei_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) case 14: /* scm available notification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) chsc_process_sei_scm_avail(sei_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) default: /* other stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) CIO_CRW_EVENT(2, "chsc: sei nt0 unhandled cc=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) sei_area->cc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) /* Check if we might have lost some information. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) if (sei_area->flags & 0x40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) CIO_CRW_EVENT(2, "chsc: event overflow\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) css_schedule_eval_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) static void chsc_process_event_information(struct chsc_sei *sei, u64 ntsm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) static int ntsm_unsupported;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) while (true) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) memset(sei, 0, sizeof(*sei));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) sei->request.length = 0x0010;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) sei->request.code = 0x000e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) if (!ntsm_unsupported)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) sei->ntsm = ntsm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if (chsc(sei))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) if (sei->response.code != 0x0001) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) CIO_CRW_EVENT(2, "chsc: sei failed (rc=%04x, ntsm=%llx)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) sei->response.code, sei->ntsm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) if (sei->response.code == 3 && sei->ntsm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) /* Fallback for old firmware. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) ntsm_unsupported = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) CIO_CRW_EVENT(2, "chsc: sei successful (nt=%d)\n", sei->nt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) switch (sei->nt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) chsc_process_sei_nt0(&sei->u.nt0_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) chsc_process_sei_nt2(&sei->u.nt2_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) CIO_CRW_EVENT(2, "chsc: unhandled nt: %d\n", sei->nt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) if (!(sei->u.nt0_area.flags & 0x80))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) * Handle channel subsystem related CRWs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) * Use store event information to find out what's going on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) * Note: Access to sei_page is serialized through machine check handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) * thread, so no need for locking.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) static void chsc_process_crw(struct crw *crw0, struct crw *crw1, int overflow)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) struct chsc_sei *sei = sei_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) if (overflow) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) css_schedule_eval_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) CIO_CRW_EVENT(2, "CRW reports slct=%d, oflw=%d, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) "chn=%d, rsc=%X, anc=%d, erc=%X, rsid=%X\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) crw0->slct, crw0->oflw, crw0->chn, crw0->rsc, crw0->anc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) crw0->erc, crw0->rsid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) CIO_TRACE_EVENT(2, "prcss");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) chsc_process_event_information(sei, CHSC_SEI_NT0 | CHSC_SEI_NT2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) void chsc_chp_online(struct chp_id chpid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) struct channel_path *chp = chpid_to_chp(chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) struct chp_link link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) char dbf_txt[15];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) sprintf(dbf_txt, "cadd%x.%02x", chpid.cssid, chpid.id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) CIO_TRACE_EVENT(2, dbf_txt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) if (chp_get_status(chpid) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) memset(&link, 0, sizeof(struct chp_link));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) link.chpid = chpid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) /* Wait until previous actions have settled. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) css_wait_for_slow_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) mutex_lock(&chp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) chp_update_desc(chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) mutex_unlock(&chp->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) for_each_subchannel_staged(__s390_process_res_acc, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) &link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) css_schedule_reprobe();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) static void __s390_subchannel_vary_chpid(struct subchannel *sch,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) struct chp_id chpid, int on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) struct chp_link link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) memset(&link, 0, sizeof(struct chp_link));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) link.chpid = chpid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) spin_lock_irqsave(sch->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) if (sch->driver && sch->driver->chp_event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) sch->driver->chp_event(sch, &link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) on ? CHP_VARY_ON : CHP_VARY_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) spin_unlock_irqrestore(sch->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) static int s390_subchannel_vary_chpid_off(struct subchannel *sch, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) struct chp_id *chpid = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) __s390_subchannel_vary_chpid(sch, *chpid, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) static int s390_subchannel_vary_chpid_on(struct subchannel *sch, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) struct chp_id *chpid = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) __s390_subchannel_vary_chpid(sch, *chpid, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) * chsc_chp_vary - propagate channel-path vary operation to subchannels
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) * @chpid: channl-path ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) * @on: non-zero for vary online, zero for vary offline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) int chsc_chp_vary(struct chp_id chpid, int on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) struct channel_path *chp = chpid_to_chp(chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) * Redo PathVerification on the devices the chpid connects to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) if (on) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) /* Try to update the channel path description. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) chp_update_desc(chp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) for_each_subchannel_staged(s390_subchannel_vary_chpid_on,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) NULL, &chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) css_schedule_reprobe();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) for_each_subchannel_staged(s390_subchannel_vary_chpid_off,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) NULL, &chpid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) chsc_remove_cmg_attr(struct channel_subsystem *css)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) for (i = 0; i <= __MAX_CHPID; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) if (!css->chps[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) chp_remove_cmg_attr(css->chps[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) chsc_add_cmg_attr(struct channel_subsystem *css)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) for (i = 0; i <= __MAX_CHPID; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) if (!css->chps[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) ret = chp_add_cmg_attr(css->chps[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) cleanup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) for (--i; i >= 0; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) if (!css->chps[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) chp_remove_cmg_attr(css->chps[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) int __chsc_do_secm(struct channel_subsystem *css, int enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) struct chsc_header request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) u32 operation_code : 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) u32 : 30;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) u32 key : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) u32 : 28;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) u32 zeroes1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) u32 cub_addr1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) u32 zeroes2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) u32 cub_addr2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) u32 reserved[13];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) struct chsc_header response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) u32 status : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) u32 : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) u32 fmt : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) u32 : 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) } *secm_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) int ret, ccode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) spin_lock_irqsave(&chsc_page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) memset(chsc_page, 0, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) secm_area = chsc_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) secm_area->request.length = 0x0050;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) secm_area->request.code = 0x0016;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) secm_area->key = PAGE_DEFAULT_KEY >> 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) secm_area->cub_addr1 = (u64)(unsigned long)css->cub_addr1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) secm_area->cub_addr2 = (u64)(unsigned long)css->cub_addr2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) secm_area->operation_code = enable ? 0 : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) ccode = chsc(secm_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) if (ccode > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) ret = (ccode == 3) ? -ENODEV : -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) switch (secm_area->response.code) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) case 0x0102:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) case 0x0103:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) ret = chsc_error_from_response(secm_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) CIO_CRW_EVENT(2, "chsc: secm failed (rc=%04x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) secm_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) spin_unlock_irqrestore(&chsc_page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) chsc_secm(struct channel_subsystem *css, int enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) if (enable && !css->cm_enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) css->cub_addr1 = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) css->cub_addr2 = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) if (!css->cub_addr1 || !css->cub_addr2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) free_page((unsigned long)css->cub_addr1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) free_page((unsigned long)css->cub_addr2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) ret = __chsc_do_secm(css, enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) if (!ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) css->cm_enabled = enable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) if (css->cm_enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) ret = chsc_add_cmg_attr(css);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) __chsc_do_secm(css, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) css->cm_enabled = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) chsc_remove_cmg_attr(css);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) if (!css->cm_enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) free_page((unsigned long)css->cub_addr1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) free_page((unsigned long)css->cub_addr2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) int c, int m, void *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) struct chsc_scpd *scpd_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) int ccode, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) if ((rfmt == 1 || rfmt == 0) && c == 1 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) !css_general_characteristics.fcs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) if ((rfmt == 2) && !css_general_characteristics.cib)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) if ((rfmt == 3) && !css_general_characteristics.util_str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) memset(page, 0, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) scpd_area = page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) scpd_area->request.length = 0x0010;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) scpd_area->request.code = 0x0002;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) scpd_area->cssid = chpid.cssid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) scpd_area->first_chpid = chpid.id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) scpd_area->last_chpid = chpid.id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) scpd_area->m = m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) scpd_area->c = c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) scpd_area->fmt = fmt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) scpd_area->rfmt = rfmt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) ccode = chsc(scpd_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) if (ccode > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) return (ccode == 3) ? -ENODEV : -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) ret = chsc_error_from_response(scpd_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) CIO_CRW_EVENT(2, "chsc: scpd failed (rc=%04x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) scpd_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) EXPORT_SYMBOL_GPL(chsc_determine_channel_path_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) #define chsc_det_chp_desc(FMT, c) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) int chsc_determine_fmt##FMT##_channel_path_desc( \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) struct chp_id chpid, struct channel_path_desc_fmt##FMT *desc) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) struct chsc_scpd *scpd_area; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) unsigned long flags; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) int ret; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) spin_lock_irqsave(&chsc_page_lock, flags); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) scpd_area = chsc_page; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) ret = chsc_determine_channel_path_desc(chpid, 0, FMT, c, 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) scpd_area); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) if (ret) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) goto out; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) memcpy(desc, scpd_area->data, sizeof(*desc)); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) out: \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) spin_unlock_irqrestore(&chsc_page_lock, flags); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) return ret; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) chsc_det_chp_desc(0, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) chsc_det_chp_desc(1, 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) chsc_det_chp_desc(3, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) chsc_initialize_cmg_chars(struct channel_path *chp, u8 cmcv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) struct cmg_chars *chars)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) int i, mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) for (i = 0; i < NR_MEASUREMENT_CHARS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) mask = 0x80 >> (i + 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) if (cmcv & mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) chp->cmg_chars.values[i] = chars->values[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) chp->cmg_chars.values[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) }
^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) int chsc_get_channel_measurement_chars(struct channel_path *chp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) int ccode, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) struct chsc_header request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) u32 : 24;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) u32 first_chpid : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) u32 : 24;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) u32 last_chpid : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) u32 zeroes1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) struct chsc_header response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) u32 zeroes2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) u32 not_valid : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) u32 shared : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) u32 : 22;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) u32 chpid : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) u32 cmcv : 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) u32 : 11;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) u32 cmgq : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) u32 cmg : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) u32 zeroes3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) u32 data[NR_MEASUREMENT_CHARS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) } *scmc_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) chp->shared = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) chp->cmg = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) if (!css_chsc_characteristics.scmc || !css_chsc_characteristics.secm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) spin_lock_irqsave(&chsc_page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) memset(chsc_page, 0, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) scmc_area = chsc_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) scmc_area->request.length = 0x0010;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) scmc_area->request.code = 0x0022;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) scmc_area->first_chpid = chp->chpid.id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) scmc_area->last_chpid = chp->chpid.id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) ccode = chsc(scmc_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) if (ccode > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) ret = (ccode == 3) ? -ENODEV : -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) ret = chsc_error_from_response(scmc_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) CIO_CRW_EVENT(2, "chsc: scmc failed (rc=%04x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) scmc_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) if (scmc_area->not_valid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) chp->cmg = scmc_area->cmg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) chp->shared = scmc_area->shared;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) if (chp->cmg != 2 && chp->cmg != 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) /* No cmg-dependent data. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) chsc_initialize_cmg_chars(chp, scmc_area->cmcv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) (struct cmg_chars *) &scmc_area->data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) spin_unlock_irqrestore(&chsc_page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) int __init chsc_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) sei_page = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) chsc_page = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) if (!sei_page || !chsc_page) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) ret = crw_register_handler(CRW_RSC_CSS, chsc_process_crw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) out_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) free_page((unsigned long)chsc_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) free_page((unsigned long)sei_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) void __init chsc_init_cleanup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) crw_unregister_handler(CRW_RSC_CSS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) free_page((unsigned long)chsc_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) free_page((unsigned long)sei_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) sda_area->request.length = 0x0400;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) sda_area->request.code = 0x0031;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) sda_area->operation_code = operation_code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) ret = chsc(sda_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) if (ret > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) ret = (ret == 3) ? -ENODEV : -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) switch (sda_area->response.code) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) case 0x0101:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) ret = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) ret = chsc_error_from_response(sda_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) int chsc_enable_facility(int operation_code)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) struct chsc_sda_area *sda_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) spin_lock_irqsave(&chsc_page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) memset(chsc_page, 0, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) sda_area = chsc_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) ret = __chsc_enable_facility(sda_area, operation_code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) CIO_CRW_EVENT(2, "chsc: sda (oc=%x) failed (rc=%04x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) operation_code, sda_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) spin_unlock_irqrestore(&chsc_page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) return ret;
^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) int __init chsc_get_cssid_iid(int idx, u8 *cssid, u8 *iid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) struct chsc_header request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) u8 atype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) u32 : 24;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) u32 reserved1[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) struct chsc_header response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) u32 reserved2[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) u8 cssid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) u8 iid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) u32 : 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) } list[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) } *sdcal_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) spin_lock_irq(&chsc_page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) memset(chsc_page, 0, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) sdcal_area = chsc_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) sdcal_area->request.length = 0x0020;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) sdcal_area->request.code = 0x0034;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) sdcal_area->atype = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) ret = chsc(sdcal_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) ret = (ret == 3) ? -ENODEV : -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) ret = chsc_error_from_response(sdcal_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) CIO_CRW_EVENT(2, "chsc: sdcal failed (rc=%04x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) sdcal_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) if ((addr_t) &sdcal_area->list[idx] <
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) (addr_t) &sdcal_area->response + sdcal_area->response.length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) *cssid = sdcal_area->list[idx].cssid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) *iid = sdcal_area->list[idx].iid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) spin_unlock_irq(&chsc_page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) struct css_general_char css_general_characteristics;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) struct css_chsc_char css_chsc_characteristics;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) int __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) chsc_determine_css_characteristics(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) struct chsc_header request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) u32 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) u32 reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) u32 reserved3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) struct chsc_header response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) u32 reserved4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) u32 general_char[510];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) u32 chsc_char[508];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) } *scsc_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) spin_lock_irqsave(&chsc_page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) memset(chsc_page, 0, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) scsc_area = chsc_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) scsc_area->request.length = 0x0010;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) scsc_area->request.code = 0x0010;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) result = chsc(scsc_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) if (result) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) result = (result == 3) ? -ENODEV : -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) goto exit;
^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) result = chsc_error_from_response(scsc_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) if (result == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) memcpy(&css_general_characteristics, scsc_area->general_char,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) sizeof(css_general_characteristics));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) memcpy(&css_chsc_characteristics, scsc_area->chsc_char,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) sizeof(css_chsc_characteristics));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) CIO_CRW_EVENT(2, "chsc: scsc failed (rc=%04x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) scsc_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) spin_unlock_irqrestore(&chsc_page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) EXPORT_SYMBOL_GPL(css_general_characteristics);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) EXPORT_SYMBOL_GPL(css_chsc_characteristics);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) int chsc_sstpc(void *page, unsigned int op, u16 ctrl, u64 *clock_delta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) struct chsc_header request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) unsigned int rsvd0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) unsigned int op : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) unsigned int rsvd1 : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) unsigned int ctrl : 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) unsigned int rsvd2[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) struct chsc_header response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) unsigned int rsvd3[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) u64 clock_delta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) unsigned int rsvd4[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) } *rr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) memset(page, 0, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) rr = page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) rr->request.length = 0x0020;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) rr->request.code = 0x0033;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) rr->op = op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) rr->ctrl = ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) rc = chsc(rr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) rc = (rr->response.code == 0x0001) ? 0 : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) if (clock_delta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) *clock_delta = rr->clock_delta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) int chsc_sstpi(void *page, void *result, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) struct chsc_header request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) unsigned int rsvd0[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) struct chsc_header response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) char data[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) } *rr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) memset(page, 0, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) rr = page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) rr->request.length = 0x0010;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) rr->request.code = 0x0038;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) rc = chsc(rr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) memcpy(result, &rr->data, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) return (rr->response.code == 0x0001) ? 0 : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) int chsc_stzi(void *page, void *result, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) struct chsc_header request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) unsigned int rsvd0[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) struct chsc_header response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) char data[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) } *rr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) memset(page, 0, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) rr = page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) rr->request.length = 0x0010;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) rr->request.code = 0x003e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) rc = chsc(rr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) memcpy(result, &rr->data, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) return (rr->response.code == 0x0001) ? 0 : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) int chsc_siosl(struct subchannel_id schid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) struct chsc_header request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) u32 word1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) struct subchannel_id sid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) u32 word3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) struct chsc_header response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) u32 word[11];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) } *siosl_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) int ccode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) spin_lock_irqsave(&chsc_page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) memset(chsc_page, 0, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) siosl_area = chsc_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) siosl_area->request.length = 0x0010;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) siosl_area->request.code = 0x0046;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) siosl_area->word1 = 0x80000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) siosl_area->sid = schid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) ccode = chsc(siosl_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) if (ccode > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) if (ccode == 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) rc = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) rc = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) CIO_MSG_EVENT(2, "chsc: chsc failed for 0.%x.%04x (ccode=%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) schid.ssid, schid.sch_no, ccode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) rc = chsc_error_from_response(siosl_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) CIO_MSG_EVENT(2, "chsc: siosl failed for 0.%x.%04x (rc=%04x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) schid.ssid, schid.sch_no,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) siosl_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) CIO_MSG_EVENT(4, "chsc: siosl succeeded for 0.%x.%04x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) schid.ssid, schid.sch_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) spin_unlock_irqrestore(&chsc_page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) EXPORT_SYMBOL_GPL(chsc_siosl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) * chsc_scm_info() - store SCM information (SSI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) * @scm_area: request and response block for SSI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) * @token: continuation token
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) * Returns 0 on success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) int ccode, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) memset(scm_area, 0, sizeof(*scm_area));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) scm_area->request.length = 0x0020;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) scm_area->request.code = 0x004C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) scm_area->reqtok = token;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) ccode = chsc(scm_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) if (ccode > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) ret = (ccode == 3) ? -ENODEV : -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) ret = chsc_error_from_response(scm_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) CIO_MSG_EVENT(2, "chsc: scm info failed (rc=%04x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) scm_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) EXPORT_SYMBOL_GPL(chsc_scm_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) * chsc_pnso() - Perform Network-Subchannel Operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) * @schid: id of the subchannel on which PNSO is performed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) * @pnso_area: request and response block for the operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) * @oc: Operation Code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) * @resume_token: resume token for multiblock response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) * @cnc: Boolean change-notification control
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) * pnso_area must be allocated by the caller with get_zeroed_page(GFP_KERNEL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) * Returns 0 on success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) int chsc_pnso(struct subchannel_id schid, struct chsc_pnso_area *pnso_area,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) u8 oc, struct chsc_pnso_resume_token resume_token, int cnc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) memset(pnso_area, 0, sizeof(*pnso_area));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) pnso_area->request.length = 0x0030;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) pnso_area->request.code = 0x003d; /* network-subchannel operation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) pnso_area->m = schid.m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) pnso_area->ssid = schid.ssid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) pnso_area->sch = schid.sch_no;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) pnso_area->cssid = schid.cssid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) pnso_area->oc = oc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) pnso_area->resume_token = resume_token;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) pnso_area->n = (cnc != 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) if (chsc(pnso_area))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) return chsc_error_from_response(pnso_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) int chsc_sgib(u32 origin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) struct chsc_header request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) u16 op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) u8 reserved01[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) u8 reserved02:4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) u8 fmt:4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) u8 reserved03[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) /* operation data area begin */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) u8 reserved04[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) u32 gib_origin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) u8 reserved05[10];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) u8 aix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) u8 reserved06[4029];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) struct chsc_header response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) u8 reserved07[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) } *sgib_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) spin_lock_irq(&chsc_page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) memset(chsc_page, 0, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) sgib_area = chsc_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) sgib_area->request.length = 0x0fe0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) sgib_area->request.code = 0x0021;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) sgib_area->op = 0x1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) sgib_area->gib_origin = origin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) ret = chsc(sgib_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) if (ret == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) ret = chsc_error_from_response(sgib_area->response.code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) spin_unlock_irq(&chsc_page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) EXPORT_SYMBOL_GPL(chsc_sgib);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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